Fix of speed of checking whether message is deleted

.gitignore

@@ -18,23 +18,30 @@ coverage.html
 mem.pprof
 
 # Auto generated frontend
-frontend/qml/BridgeUI/*.qmlc
-frontend/qml/ProtonUI/*.qmlc
-frontend/qml/ProtonUI/fontawesome.ttf
-frontend/qml/ProtonUI/images
+internal/frontend/qml/BridgeUI/*.qmlc
+internal/frontend/qml/ImportExportUI/*.qmlc
+internal/frontend/qml/ProtonUI/*.qmlc
+internal/frontend/qml/ProtonUI/fontawesome.ttf
+internal/frontend/qml/ProtonUI/images
+internal/frontend/qml/ImportExportUI/images
 frontend/qml/*.qmlc
 
 # Build files
 bridge_darwin_*.tgz
 cmd/Desktop-Bridge/deploy
-internal/frontend/qt/moc.cpp
-internal/frontend/qt/moc.go
-internal/frontend/qt/moc.h
-internal/frontend/qt/moc_cgo_darwin_darwin_amd64.go
-internal/frontend/qt/moc_moc.h
-internal/frontend/qt/rcc.cpp
-internal/frontend/qt/rcc_cgo_darwin_darwin_amd64.go
+cmd/Import-Export/deploy
+internal/frontend/qt*/moc.cpp
+internal/frontend/qt*/moc.go
+internal/frontend/qt*/moc.h
+internal/frontend/qt*/moc_cgo_*.go
+internal/frontend/qt*/moc_moc.h
+internal/frontend/qt*/rcc.cpp
+internal/frontend/qt*/rcc.qrc
+internal/frontend/qt*/rcc_cgo_*.go
+
 internal/frontend/rcc.cpp
 internal/frontend/rcc.qrc
-internal/frontend/rcc_cgo_darwin_darwin_amd64.go
+internal/frontend/rcc_cgo_*.go
 vendor-cache/
+
+/main.go

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: gitlab.protontech.ch:4567/go/bridge/ci
+image: gitlab.protontech.ch:4567/go/bridge-internal
 
 before_script:
   - eval $(ssh-agent -s)
@@ -13,38 +13,15 @@ before_script:
 cache:
   key: go-mod
   paths:
-  - .cache
+    - .cache
   policy: pull
 
 stages:
-  - image
   - cache
   - test
   - build
   - mirror
 
-# Stage: IMAGE
-
-build-ci-image:
-  stage: image
-  image: docker:stable
-  before_script: []
-  cache: {}
-  tags:
-  - heavy
-  only:
-    changes:
-    - ci/*
-  services:
-  - docker:dind
-  variables:
-    DOCKER_HOST: tcp://docker:2375
-  script:
-  - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
-  - docker info
-  - docker build -t gitlab.protontech.ch:4567/go/bridge/ci:latest ci
-  - docker push gitlab.protontech.ch:4567/go/bridge/ci:latest
-
 # Stage: CACHE
 
 # This will ensure latest dependency versions and updates the cache for
@@ -54,11 +31,11 @@ cache-push:
   only:
     - branches
   script:
-  - echo ""
+    - echo ""
   cache:
     key: go-mod
     paths:
-    - .cache
+      - .cache
 
 # Stage: TEST
 
@@ -98,23 +75,44 @@ dependency-updates:
 
 # Stage: BUILD
 
-build-linux:
+.build-base:
   stage: build
-  # Test build every time (= we want to know build is possible).
   only:
     - branches
   script:
     - make build
+  artifacts:
+    expire_in: 2 week
+
+build-linux:
+  extends: .build-base
   artifacts:
     name: "bridge-linux-$CI_COMMIT_SHORT_SHA"
     paths:
       - bridge_*.tgz
-    expire_in: 2 week
 
-build-darwin:
-  stage: build
+build-linux-qa:
+  extends: .build-base
   only:
-    - branches
+    - web
+  script:
+    - BUILD_TAGS="build_qa pmapi_qa" make build
+  artifacts:
+    name: "bridge-linux-qa-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - bridge_*.tgz
+
+build-ie-linux:
+  extends: .build-base
+  script:
+    - make build-ie
+  artifacts:
+    name: "ie-linux-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - ie_*.tgz
+
+.build-darwin-base:
+  extends: .build-base
   before_script:
     - eval $(ssh-agent -s)
     - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
@@ -125,25 +123,47 @@ build-darwin:
     - export PATH=/usr/local/opt/gnu-sed/libexec/gnubin:$PATH
     - export GOPATH=~/go
     - export PATH=$GOPATH/bin:$PATH
+    - export CGO_CPPFLAGS='-Wno-error -Wno-nullability-completeness -Wno-expansion-to-defined -Wno-builtin-requires-header'
   cache: {}
   tags:
-    - macOS-bridge
-  script:
-    - make build
+    - macOS
+
+build-darwin:
+  extends: .build-darwin-base
   artifacts:
     name: "bridge-darwin-$CI_COMMIT_SHORT_SHA"
     paths:
       - bridge_*.tgz
-    expire_in: 2 week
 
-build-windows:
-  stage: build
-  services:
-  - docker:dind
+build-darwin-qa:
+  extends: .build-darwin-base
   only:
-    - branches
+    - web
+  script:
+    - BUILD_TAGS="build_qa pmapi_qa" make build
+  artifacts:
+    name: "bridge-darwin-qa-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - bridge_*.tgz
+
+build-ie-darwin:
+  extends: .build-darwin-base
+  script:
+    - make build-ie
+  artifacts:
+    name: "ie-darwin-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - ie_*.tgz
+
+.build-windows-base:
+  extends: .build-base
+  services:
+    - docker:dind
   variables:
     DOCKER_HOST: tcp://docker:2375
+
+build-windows:
+  extends: .build-windows-base
   script:
     # We need to install docker because qtdeploy builds for windows inside a docker container.
     # Docker will connect to the dockerd daemon provided by the runner service docker:dind at tcp://docker:2375.
@@ -156,7 +176,40 @@ build-windows:
     name: "bridge-windows-$CI_COMMIT_SHORT_SHA"
     paths:
       - bridge_*.tgz
-    expire_in: 2 week
+
+build-windows-qa:
+  extends: .build-windows-base
+  only:
+    - web
+  script:
+    # We need to install docker because qtdeploy builds for windows inside a docker container.
+    # Docker will connect to the dockerd daemon provided by the runner service docker:dind at tcp://docker:2375.
+    - curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh
+    - apt-get update && apt-get -y install binutils-mingw-w64 tar gzip
+    - ln -s /usr/bin/x86_64-w64-mingw32-windres /usr/bin/windres
+    - go mod download
+    - TARGET_OS=windows BUILD_TAGS="build_qa pmapi_qa" make build
+  artifacts:
+    name: "bridge-windows-qa-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - bridge_*.tgz
+
+build-ie-windows:
+  extends: .build-windows-base
+  script:
+    # We need to install docker because qtdeploy builds for windows inside a docker container.
+    # Docker will connect to the dockerd daemon provided by the runner service docker:dind at tcp://docker:2375.
+    - curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh
+    - apt-get update && apt-get -y install binutils-mingw-w64 tar gzip
+    - ln -s /usr/bin/x86_64-w64-mingw32-windres /usr/bin/windres
+    - go mod download
+    - TARGET_OS=windows make build-ie
+  artifacts:
+    name: "ie-windows-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - ie_*.tgz
+
+# Stage: MIRROR
 
 mirror-repo:
   stage: mirror

.golangci.yml

@@ -21,6 +21,12 @@ issues:
         - gochecknoinits
         - gosec
 
+linters-settings:
+  godox:
+    keywords:
+      - TODO
+      - FIXME
+
 linters:
   # setting disable-all will make only explicitly enabled linters run
   disable-all: true

BUILDS.md

@@ -1,4 +1,4 @@
-# Building ProtonMail Bridge app
+# Building ProtonMail Bridge and Import-Export app
 
 ## Prerequisites
 * Go 1.13
@@ -19,6 +19,8 @@ Otherwise, the sending of crash reports will be disabled.
 export MSYSTEM=
 ```
 
+
+### Build Bridge
 * in project root run
 
 ```bash
@@ -26,9 +28,22 @@ make build
 ```
 
 * The result will be stored in `./cmd/Destop-Bridge/deploy/${GOOS}/`
-    * for `linux`, the binary will have the name of the project directory (e.g `bridge`)
-    * for `windows`, the binary will have the file extension `.exe` (e.g `bridge.exe`)
-    * for `darwin`, the application will be created with name of the project directory (e.g `bridge.app`)
+    * for `linux`, the binary will have the name of the project directory (e.g `proton-bridge`)
+    * for `windows`, the binary will have the file extension `.exe` (e.g `proton-bridge.exe`)
+    * for `darwin`, the application will be created with name of the project directory (e.g `proton-bridge.app`)
+
+### Build Import-Export
+* in project root run
+
+```bash
+make build-ie
+```
+
+* The result will be stored in `./cmd/Import-Export/deploy/${GOOS}/`
+    * for `linux`, the binary will have the name of the project directory (e.g `proton-bridge`)
+    * for `windows`, the binary will have the file extension `.exe` (e.g `proton-bridge.exe`)
+    * for `darwin`, the application will be created with name of the project directory (e.g `proton-bridge.app`)
+
 
 ## Useful tests, lints and checks
 In order to be able to run following commands please install the development dependencies: 

Changelog.md

@@ -2,9 +2,116 @@
 
 Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
-## [v1.3.x] Emma (beta 2020-07-XXX)
+## Unreleased
+
+## [Bridge 1.4.2] Forth
+
+### Changed
+* GODT-761 Use label.Path instead of Name to partially support subfolders for webapp beta release.
+* GODT-765 Improve speed of checking whether message is deleted.
+
+## [IE 1.1.1] Danube (beta 2020-09-xx) [Bridge 1.4.1] Forth (beta 2020-09-xx)
+
+### Fixed
+* GODT-752 Parsing message with empty addresses.
+* GODT-752 Parsing non-utf8 multipart/alternative message.
+* GODT-752 Parsing message with duplicate charset parameter.
+
+## [IE 1.1.0] Danube
+
+### Fixed
+* GODT-703 Import-Export showed always at least one total message.
+* GODT-738 Fix for mbox files with long lines.
+
+## [Bridge 1.4.0] Forth
 
 ### Added
+* GODT-682 Persistent anonymous API cookies for Import-Export.
+* GODT-357 Use go-message to make a better message parser.
+* GODT-720 Time measurement of progress for Import-Export.
+
+### Changed
+* GODT-511 User agent format changed.
+* Unsilent errors reading mbox files.
+* GODT-692 QA build with option to change API URL by ENV variable.
+* GODT-704 User agent detected by fake IMAP extension instead of AUTH callback (some clients use LOGIN instead of AUTH).
+* GODT-695 Parallel upload for ProtonMail target.
+
+### Removed
+* GODT-519 Unused AUTH scope parsing methods.
+
+### Fixed
+* GODT-698 Use correct package type for signed PGP/Inline messages.
+* Generic bug report window title.
+* Fix missing check for unencrypted recipients during sending.
+* Version checking for catalina.
+* GODT-730 Limit maximal TLS version for Yahoo IMAP server.
+
+
+## [IE 1.0.x] Congo (v1.0.0 live 2020-09-08)
+
+### Added
+* GODT-633 Persistent anonymous API cookies for better load balancing and abuse detection. 
+* GODT-461 Add support for `\Deleted` flag.
+
+### Changed
+* GODT-462 Pausing event loop while FETCHing to prevent EXPUNGE
+* Wait for unilateral response to be delivered
+* GODT-409 Set flags have to replace all flags.
+* GODT-531 Better way to add trusted certificate in macOS.
+* Bumped golangci-lint to v1.29.0
+* GODT-549 Check log file size more often to prevent huge log files.
+* Bumped various dependencies:
+    * andybalholm/cascadia v1.1.0 -> v1.2.0
+    * emersion/go-imap-specialuse 20161227184202-ba031ced6a62 -> 20200722111535-598ff00e4075
+    * emersion/go-sasl 20191210011802-430746ea8b9b -> 20200509203442-7bfe0ed36a21
+    * github.com/go-resty/resty/v2 v2.2.0 -> v2.3.0
+    * github.com/golang/mock v1.4.3 -> v1.4.4
+    * github.com/google/go-cmp v0.4.0 -> v0.5.1
+    * github.com/hashicorp/go-multierror v1.0.0 -> v1.1.0
+    * github.com/jaytaylor/html2text 20200220170450-61d9dc4d7195 -> 20200412013138-3577fbdbcff7
+    * github.com/jhillyerd/enmime v0.8.0 -> v0.8.1
+    * github.com/keybase/go-keychain 20200218013740-86d4642e4ce2 -> 20200502122510-cda31fe0c86d
+    * github.com/logrusorgru/aurora 20200102142835-e9ef32dff381 -> v2.0.3+incompatible
+    * github.com/miekg/dns v1.1.29 -> v1.1.30
+    * github.com/nsf/jsondiff 20190712045011-8443391ee9b6 -> 20200515183724-f29ed568f4ce
+    * github.com/sirupsen/logrus v1.4.2 -> v1.6.0
+    * github.com/stretchr/testify v1.5.1 -> v1.6.1
+    * github.com/therecipe/qt 20200126204426-5074eb6d8c41 -> 20200701200531-7f61353ee73e
+    * github.com/urfave/cli v1.22.3 -> v1.22.4
+    * golang.org/x/net 20200301022130-244492dfa37a -> 20200707034311-ab3426394381
+    * golang.org/x/text v0.3.2 -> v0.3.3
+* Set first-start to false in bridge, not in frontend.
+* GODT-400 Refactor sendingInfo.
+* GODT-513 Update routes to API v4.
+* GODT-551 Do not ignore errors during message flagging.
+* GODT-380 Adding IE GUI to Bridge repo and building
+    * BR: extend functionality of PopupDialog
+    * BR: makefile APP_VERSION instead of BRIDGE_VERSION
+    * BR: use common logs function for Qt
+    * BR: change `go.progressDescription` to `string`
+    * IE: Rounded button has fa-icon
+    * IE: `Upgrade` → `Update`
+    * IE: Moving `AccountModel` to `qt-common`
+    * IE: Added `ReportBug` to `internal/importexport`
+    * IE: Added event watch in GUI
+    * IE: Removed `onLoginFinished`
+    * Structure for transfer rules in QML
+* GODT-213 Convert panics from message parser to error.
+* GODT-585 Do not allow deleting messages from All Mail.
+
+### Fixed
+* GODT-655 Fix date picker with automatic Windows DST
+* GODT-454 Fix send on closed channel when receiving unencrypted send confirmation from GUI.
+* GODT-597 Duplicate sending when draft creation takes too long
+* GODT-634 Hover on links in popups.
+
+
+
+## [v1.3.x] Emma (v1.3.2 beta 2020-08-04, v1.3.3 beta 2020-08-06, v1.3.3 live 2020-08-12)
+
+### Added
+* GODT-554 Detect and notify about "bad certificate" IMAP TLS error.
 * IMAP mailbox info update when new mailbox is created.
 * GODT-72 Use ISO-8859-1 encoding if charset is not specified and it isn't UTF-8.
 

Makefile

@@ -3,19 +3,34 @@ export GO111MODULE=on
 # By default, the target OS is the same as the host OS,
 # but this can be overridden by setting TARGET_OS to "windows"/"darwin"/"linux".
 GOOS:=$(shell go env GOOS)
+TARGET_CMD?=Desktop-Bridge
 TARGET_OS?=${GOOS}
 
 ## Build
-.PHONY: build build-nogui check-has-go
+.PHONY: build build-ie build-nogui build-ie-nogui check-has-go
 
-BRIDGE_VERSION?=$(shell git describe --abbrev=0 --tags)-git
+# Keep version hardcoded so app build works also without Git repository.
+BRIDGE_APP_VERSION?=1.4.0-git
+IE_APP_VERSION?=1.1.0-git
+APP_VERSION:=${BRIDGE_APP_VERSION}
+SRC_ICO:=logo.ico
+SRC_ICNS:=Bridge.icns
+SRC_SVG:=logo.svg
+TGT_ICNS:=Bridge.icns
+ifeq "${TARGET_CMD}" "Import-Export"
+    APP_VERSION:=${IE_APP_VERSION}
+    SRC_ICO:=ie.ico
+    SRC_ICNS:=ie.icns
+    SRC_SVG:=ie.svg
+    TGT_ICNS:=ImportExport.icns
+endif
 REVISION:=$(shell git rev-parse --short=10 HEAD)
 BUILD_TIME:=$(shell date +%FT%T%z)
 
 BUILD_TAGS?=pmapi_prod
 BUILD_FLAGS:=-tags='${BUILD_TAGS}'
 BUILD_FLAGS_NOGUI:=-tags='${BUILD_TAGS} nogui'
-GO_LDFLAGS:=$(addprefix -X github.com/ProtonMail/proton-bridge/pkg/constants.,Version=${BRIDGE_VERSION} Revision=${REVISION} BuildTime=${BUILD_TIME})
+GO_LDFLAGS:=$(addprefix -X github.com/ProtonMail/proton-bridge/pkg/constants.,Version=${APP_VERSION} Revision=${REVISION} BuildTime=${BUILD_TIME})
 ifneq "${BUILD_LDFLAGS}" ""
     GO_LDFLAGS+= ${BUILD_LDFLAGS}
 endif
@@ -23,39 +38,47 @@ GO_LDFLAGS:=-ldflags '${GO_LDFLAGS}'
 BUILD_FLAGS+= ${GO_LDFLAGS}
 BUILD_FLAGS_NOGUI+= ${GO_LDFLAGS}
 
-DEPLOY_DIR:=cmd/Desktop-Bridge/deploy
+DEPLOY_DIR:=cmd/${TARGET_CMD}/deploy
 ICO_FILES:=
 EXE:=$(shell basename ${CURDIR})
 
 ifeq "${TARGET_OS}" "windows"
     EXE:=${EXE}.exe
-    ICO_FILES:=logo.ico icon.rc icon_windows.syso
+    ICO_FILES:=${SRC_ICO} icon.rc icon_windows.syso
 endif
 ifeq "${TARGET_OS}" "darwin"
     DARWINAPP_CONTENTS:=${DEPLOY_DIR}/darwin/${EXE}.app/Contents
     EXE:=${EXE}.app/Contents/MacOS/${EXE}
 endif
 EXE_TARGET:=${DEPLOY_DIR}/${TARGET_OS}/${EXE}
+
 TGZ_TARGET:=bridge_${TARGET_OS}_${REVISION}.tgz
+ifeq "${TARGET_CMD}" "Import-Export"
+    TGZ_TARGET:=ie_${TARGET_OS}_${REVISION}.tgz
+endif
 
 
 build: ${TGZ_TARGET}
+build-ie:
+	TARGET_CMD=Import-Export $(MAKE) build
 
 build-nogui:
-	go build ${BUILD_FLAGS_NOGUI} -o Desktop-Bridge cmd/Desktop-Bridge/main.go
+	go build ${BUILD_FLAGS_NOGUI} -o ${TARGET_CMD} cmd/${TARGET_CMD}/main.go
+
+build-ie-nogui:
+	TARGET_CMD=Import-Export $(MAKE) build-nogui
 
 ${TGZ_TARGET}: ${DEPLOY_DIR}/${TARGET_OS}
 	rm -f $@
 	cd ${DEPLOY_DIR} && tar czf ../../../$@ ${TARGET_OS}
 
 ${DEPLOY_DIR}/linux: ${EXE_TARGET}
-	cp -pf ./internal/frontend/share/icons/logo.svg ${DEPLOY_DIR}/linux/
+	cp -pf ./internal/frontend/share/icons/${SRC_SVG} ${DEPLOY_DIR}/linux/logo.svg
 	cp -pf ./LICENSE ${DEPLOY_DIR}/linux/
 	cp -pf ./Changelog.md ${DEPLOY_DIR}/linux/
 
 ${DEPLOY_DIR}/darwin: ${EXE_TARGET}
-	cp ./internal/frontend/share/icons/Bridge.icns ${DARWINAPP_CONTENTS}/Resources/
-	cp -r "utils/addcert.scpt" ${DARWINAPP_CONTENTS}/Resources/
+	cp ./internal/frontend/share/icons/${SRC_ICNS} ${DARWINAPP_CONTENTS}/Resources/${TGT_ICNS}
 	cp LICENSE ${DARWINAPP_CONTENTS}/Resources/
 	rm -rf "${DARWINAPP_CONTENTS}/Frameworks/QtWebEngine.framework"
 	rm -rf "${DARWINAPP_CONTENTS}/Frameworks/QtWebView.framework"
@@ -63,7 +86,7 @@ ${DEPLOY_DIR}/darwin: ${EXE_TARGET}
 	./utils/remove_non_relative_links_darwin.sh "${EXE_TARGET}"
 
 ${DEPLOY_DIR}/windows: ${EXE_TARGET}
-	cp ./internal/frontend/share/icons/logo.ico ${DEPLOY_DIR}/windows/
+	cp ./internal/frontend/share/icons/${SRC_ICO} ${DEPLOY_DIR}/windows/logo.ico
 	cp LICENSE ${DEPLOY_DIR}/windows/
 
 QT_BUILD_TARGET:=build desktop
@@ -75,19 +98,17 @@ endif
 
 ${EXE_TARGET}: check-has-go gofiles ${ICO_FILES} update-vendor
 	rm -rf deploy ${TARGET_OS} ${DEPLOY_DIR}
-	cp cmd/Desktop-Bridge/main.go .
+	cp cmd/${TARGET_CMD}/main.go .
 	qtdeploy ${BUILD_FLAGS} ${QT_BUILD_TARGET}
-	mv deploy cmd/Desktop-Bridge
+	mv deploy cmd/${TARGET_CMD}
 	rm -rf ${TARGET_OS} main.go
 
-logo.ico: ./internal/frontend/share/icons/logo.ico
-	cp $^ .
+logo.ico ie.ico: ./internal/frontend/share/icons/${SRC_ICO}
+	cp $^ $@
 icon.rc: ./internal/frontend/share/icon.rc
 	cp $^ .
-./internal/frontend/qt/icon_windows.syso: ./internal/frontend/share/icon.rc  logo.ico 
+icon_windows.syso: icon.rc logo.ico
 	windres --target=pe-x86-64 -o $@ $<
-icon_windows.syso: ./internal/frontend/qt/icon_windows.syso
-	cp $^ .
 
 
 ## Rules for therecipe/qt
@@ -119,7 +140,7 @@ update-vendor: vendor-cache/${THERECIPE_ENV} prepare-vendor
 
 ## Dev dependencies
 .PHONY: install-devel-tools install-linter install-go-mod-outdated
-LINTVER:="v1.27.0"
+LINTVER:="v1.29.0"
 LINTSRC:="https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh"
 
 install-dev-dependencies: install-devel-tools install-linter install-go-mod-outdated
@@ -157,9 +178,12 @@ test: gofiles
 		./internal/frontend/cli/... \
 		./internal/imap/... \
 		./internal/metrics/... \
+		./internal/importexport/... \
 		./internal/preferences/... \
 		./internal/smtp/... \
 		./internal/store/... \
+		./internal/transfer/... \
+		./internal/updates/... \
 		./internal/users/... \
 		./pkg/...
 
@@ -173,6 +197,7 @@ coverage: test
 
 mocks:
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/users Configer,PanicHandler,ClientManager,CredentialsStorer,StoreMaker > internal/users/mocks/mocks.go
+	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/transfer PanicHandler,ClientManager > internal/transfer/mocks/mocks.go
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/store PanicHandler,ClientManager,BridgeUser > internal/store/mocks/mocks.go
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/pkg/listener Listener > internal/store/mocks/utils_mocks.go
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/pkg/pmapi Client > pkg/pmapi/mocks/mocks.go
@@ -196,15 +221,20 @@ doc:
 .PHONY: gofiles
 # Following files are for the whole app so it makes sense to have them in bridge package.
 # (Options like cmd or internal were considered and bridge package is the best place for them.)
-gofiles: ./internal/bridge/credits.go ./internal/bridge/release_notes.go
+gofiles: ./internal/bridge/credits.go ./internal/bridge/release_notes.go ./internal/importexport/credits.go ./internal/importexport/release_notes.go
 ./internal/bridge/credits.go: ./utils/credits.sh go.mod
-	cd ./utils/ && ./credits.sh
-./internal/bridge/release_notes.go: ./utils/release-notes.sh ./release-notes/notes.txt ./release-notes/bugs.txt
-	cd ./utils/ && ./release-notes.sh
+	cd ./utils/ && ./credits.sh bridge
+./internal/bridge/release_notes.go: ./utils/release-notes.sh ./release-notes/notes-bridge.txt ./release-notes/bugs-bridge.txt
+	cd ./utils/ && ./release-notes.sh bridge
+./internal/importexport/credits.go: ./utils/credits.sh go.mod
+	cd ./utils/ && ./credits.sh importexport
+./internal/importexport/release_notes.go: ./utils/release-notes.sh ./release-notes/notes-importexport.txt ./release-notes/bugs-importexport.txt
+	cd ./utils/ && ./release-notes.sh importexport
 
 
 ## Run and debug
-.PHONY: run run-qt run-qt-cli run-nogui run-nogui-cli run-debug qmlpreview qt-fronted-clean clean
+.PHONY: run run-qt run-qt-cli run-nogui run-nogui-cli run-debug run-qml-preview run-ie-qml-preview run-ie run-ie-qt run-ie-qt-cli run-ie-nogui run-ie-nogui-cli clean-vendor clean-frontend-qt clean-frontend-qt-ie clean-frontend-qt-common clean
+
 VERBOSITY?=debug-client
 RUN_FLAGS:=-m -l=${VERBOSITY}
 
@@ -216,24 +246,39 @@ run-qt-cli: ${EXE_TARGET}
 	PROTONMAIL_ENV=dev ./$< ${RUN_FLAGS} -c
 
 run-nogui: clean-vendor gofiles
-	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/Desktop-Bridge/main.go ${RUN_FLAGS} | tee last.log
+	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/${TARGET_CMD}/main.go ${RUN_FLAGS} | tee last.log
 run-nogui-cli: clean-vendor gofiles
-	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/Desktop-Bridge/main.go ${RUN_FLAGS} -c
+	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/${TARGET_CMD}/main.go ${RUN_FLAGS} -c
 
 run-debug:
-	PROTONMAIL_ENV=dev dlv debug --build-flags "${BUILD_FLAGS_NOGUI}" cmd/Desktop-Bridge/main.go -- ${RUN_FLAGS}
+	PROTONMAIL_ENV=dev dlv debug --build-flags "${BUILD_FLAGS_NOGUI}" cmd/${TARGET_CMD}/main.go -- ${RUN_FLAGS}
 
 run-qml-preview:
-	make -C internal/frontend/qt -f Makefile.local qmlpreview
+	$(MAKE) -C internal/frontend/qt -f Makefile.local qmlpreview
+run-ie-qml-preview:
+	$(MAKE) -C internal/frontend/qt-ie -f Makefile.local qmlpreview
+
+run-ie:
+	TARGET_CMD=Import-Export $(MAKE) run
+run-ie-qt:
+	TARGET_CMD=Import-Export $(MAKE) run-qt
+run-ie-nogui:
+	TARGET_CMD=Import-Export $(MAKE) run-nogui
+
 
 clean-frontend-qt:
-	make -C internal/frontend/qt -f Makefile.local clean
+	$(MAKE) -C internal/frontend/qt -f Makefile.local clean
+clean-frontend-qt-ie:
+	$(MAKE) -C internal/frontend/qt-ie -f Makefile.local clean
+clean-frontend-qt-common:
+	$(MAKE) -C internal/frontend/qt-common -f Makefile.local clean
 
-clean-vendor: clean-frontend-qt
+clean-vendor: clean-frontend-qt clean-frontend-qt-ie clean-frontend-qt-common
 	rm -rf ./vendor
 
-clean: clean-frontend-qt
+clean: clean-vendor
 	rm -rf vendor-cache
 	rm -rf cmd/Desktop-Bridge/deploy
-	rm -f build last.log mem.pprof
+	rm -rf cmd/Import-Export/deploy
+	rm -f build last.log mem.pprof main.go
 	rm -rf logo.ico icon.rc icon_windows.syso internal/frontend/qt/icon_windows.syso

README.md

@@ -1,4 +1,4 @@
-# ProtonMail Bridge
+# ProtonMail Bridge and Import Export app
 Copyright (c) 2020 Proton Technologies AG
 
 This repository holds the ProtonMail Bridge application.
@@ -7,7 +7,7 @@ For licensing information see [COPYING](./COPYING.md).
 For contribution policy see [CONTRIBUTING](./CONTRIBUTING.md).
 
 
-## Description
+## Description Bridge
 ProtonMail Bridge for e-mail clients.
 
 When launched, Bridge will initialize local IMAP/SMTP servers and render 
@@ -24,6 +24,16 @@ background.
 
 More details [on the public website](https://protonmail.com/bridge).
 
+## Description Import-Export app
+ProtonMail Import-Export app for importing and exporting messages.
+
+To transfer messages, firstly log in using your ProtonMail credentials.
+For import, expand your account, and pick the address to which to import
+messages from IMAP server or local EML or MBOX files. For export, pick
+the whole account or only a specific address. Then, in both cases,
+configure transfer rules (match source and target mailboxes, set time
+range limits and so on) and hit start. Once the transfer is complete,
+check the results.
 
 ## Keychain
 You need to have a keychain in order to run the ProtonMail Bridge. On Mac or
@@ -39,12 +49,13 @@ or
 - `BRIDGESTRICTMODE`: tells bridge to turn on `bbolt`'s "strict mode" which checks the database after every `Commit`. Set to `1` to enable.
 
 ### Dev build or run
-- `BRIDGE_VERSION`: set the bridge app version used during testing or building
+- `APP_VERSION`: set the bridge app version used during testing or building
 - `PROTONMAIL_ENV`: when set to `dev` it is not using Sentry to report crashes
 - `VERBOSITY`: set log level used during test time and by the makefile
 
 ### Integration testing
 - `TEST_ENV`: set which env to use (fake or live)
+- `TEST_APP`: set which app to test (bridge or ie)
 - `TEST_ACCOUNTS`: set JSON file with configured accounts
 - `TAGS`: set build tags for tests
 - `FEATURES`: set feature dir, file or scenario to test

ci/Dockerfile

@@ -1,4 +0,0 @@
-FROM gitlab.protontech.ch:4567/protonmail/ci-containers/go
-
-RUN apt-get -y update
-RUN apt-get -y install openssh-client libsecret-1-dev libgl1-mesa-dev time connect-proxy

cmd/Desktop-Bridge/main.go

@@ -35,122 +35,56 @@ package main
 */
 
 import (
-	"fmt"
 	"io/ioutil"
 	"os"
-	"os/exec"
-	"path/filepath"
-	"runtime"
 	"runtime/pprof"
-	"strconv"
-	"strings"
 
 	"github.com/ProtonMail/proton-bridge/internal/api"
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/internal/cmd"
+	"github.com/ProtonMail/proton-bridge/internal/cookies"
 	"github.com/ProtonMail/proton-bridge/internal/events"
 	"github.com/ProtonMail/proton-bridge/internal/frontend"
 	"github.com/ProtonMail/proton-bridge/internal/imap"
 	"github.com/ProtonMail/proton-bridge/internal/preferences"
 	"github.com/ProtonMail/proton-bridge/internal/smtp"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/ProtonMail/proton-bridge/internal/users/credentials"
-	"github.com/ProtonMail/proton-bridge/pkg/args"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/constants"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
 	"github.com/allan-simon/go-singleinstance"
-	"github.com/getsentry/raven-go"
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli"
 )
 
-// cacheVersion is used for cache files such as lock, events, preferences, user_info, db files.
-// Different number will drop old files and create new ones.
-const cacheVersion = "c11"
+const (
+	// cacheVersion is used for cache files such as lock, events, preferences, user_info, db files.
+	// Different number will drop old files and create new ones.
+	cacheVersion = "c11"
+
+	appName = "bridge"
+)
 
 var (
 	log = logrus.WithField("pkg", "main") //nolint[gochecknoglobals]
-
-	// How many crashes in a row.
-	numberOfCrashes = 0 //nolint[gochecknoglobals]
-
-	// After how many crashes bridge gives up starting.
-	maxAllowedCrashes = 10 //nolint[gochecknoglobals]
 )
 
 func main() {
-	if err := raven.SetDSN(constants.DSNSentry); err != nil {
-		log.WithError(err).Errorln("Can not setup sentry DSN")
-	}
-	raven.SetRelease(constants.Revision)
-
-	args.FilterProcessSerialNumberFromArgs()
-	filterRestartNumberFromArgs()
-
-	app := cli.NewApp()
-	app.Name = "Protonmail Bridge"
-	app.Version = constants.BuildVersion
-	app.Flags = []cli.Flag{
-		cli.StringFlag{
-			Name:  "log-level, l",
-			Usage: "Set the log level (one of panic, fatal, error, warn, info, debug, debug-client, debug-server)"},
-		cli.BoolFlag{
-			Name:  "no-window",
-			Usage: "Don't show window after start"},
-		cli.BoolFlag{
-			Name:  "cli, c",
-			Usage: "Use command line interface"},
-		cli.BoolFlag{
-			Name:  "noninteractive",
-			Usage: "Start Bridge entirely noninteractively"},
-		cli.StringFlag{
-			Name:  "version-json, g",
-			Usage: "Generate json version file"},
-		cli.BoolFlag{
-			Name:  "mem-prof, m",
-			Usage: "Generate memory profile"},
-		cli.BoolFlag{
-			Name:  "cpu-prof, p",
-			Usage: "Generate CPU profile"},
-	}
-	app.Usage = "ProtonMail IMAP and SMTP Bridge"
-	app.Action = run
-
-	// Always log the basic info about current bridge.
-	logrus.SetLevel(logrus.InfoLevel)
-	log.WithField("version", constants.Version).
-		WithField("revision", constants.Revision).
-		WithField("runtime", runtime.GOOS).
-		WithField("build", constants.BuildTime).
-		WithField("args", os.Args).
-		WithField("appLong", app.Name).
-		WithField("appShort", constants.AppShortName).
-		Info("Run app")
-	if err := app.Run(os.Args); err != nil {
-		log.Error("Program exited with error: ", err)
-	}
-}
-
-type panicHandler struct {
-	cfg *config.Config
-	err *error // Pointer to error of cli action.
-}
-
-func (ph *panicHandler) HandlePanic() {
-	r := recover()
-	if r == nil {
-		return
-	}
-
-	config.HandlePanic(ph.cfg, fmt.Sprintf("Recover: %v", r))
-	frontend.HandlePanic()
-
-	*ph.err = cli.NewExitError("Panic and restart", 666)
-	numberOfCrashes++
-	log.Error("Restarting after panic")
-	restartApp()
-	os.Exit(666)
+	cmd.Main(
+		"ProtonMail Bridge",
+		"ProtonMail IMAP and SMTP Bridge",
+		[]cli.Flag{
+			cli.BoolFlag{
+				Name:  "no-window",
+				Usage: "Don't show window after start"},
+			cli.BoolFlag{
+				Name:  "noninteractive",
+				Usage: "Start Bridge entirely noninteractively"},
+		},
+		run,
+	)
 }
 
 // run initializes and starts everything in a precise order.
@@ -158,13 +92,17 @@ func (ph *panicHandler) HandlePanic() {
 // IMPORTANT: ***Read the comments before CHANGING the order ***
 func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	// We need to have config instance to setup a logs, panic handler, etc ...
-	cfg := config.New(constants.AppShortName, constants.Version, constants.Revision, cacheVersion)
+	cfg := config.New(appName, constants.Version, constants.Revision, cacheVersion)
 
 	// We want to know about any problem. Our PanicHandler calls sentry which is
 	// not dependent on anything else. If that fails, it tries to create crash
 	// report which will not be possible if no folder can be created. That's the
 	// only problem we will not be notified about in any way.
-	panicHandler := &panicHandler{cfg, &contextError}
+	panicHandler := &cmd.PanicHandler{
+		AppName: "ProtonMail Bridge",
+		Config:  cfg,
+		Err:     &contextError,
+	}
 	defer panicHandler.HandlePanic()
 
 	// First we need config and create necessary folder; it's dependency for everything.
@@ -176,13 +114,6 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	logLevel := context.GlobalString("log-level")
 	debugClient, debugServer := config.SetupLog(cfg, logLevel)
 
-	// Should be called after logs are configured but before preferences are created.
-	migratePreferencesFromC10(cfg)
-
-	if err := cfg.ClearOldData(); err != nil {
-		log.Error("Cannot clear old data: ", err)
-	}
-
 	// Doesn't make sense to continue when Bridge was invoked with wrong arguments.
 	// We should tell that to the user before we do anything else.
 	if context.Args().First() != "" {
@@ -192,21 +123,16 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 
 	// It's safe to get version JSON file even when other instance is running.
 	// (thus we put it before check of presence of other Bridge instance).
-	updates := updates.New(
-		constants.AppShortName,
-		constants.Version,
-		constants.Revision,
-		constants.BuildTime,
-		bridge.ReleaseNotes,
-		bridge.ReleaseFixedBugs,
-		cfg.GetUpdateDir(),
-	)
+	updates := updates.NewBridge(cfg.GetUpdateDir())
 
 	if dir := context.GlobalString("version-json"); dir != "" {
-		generateVersionFiles(updates, dir)
+		cmd.GenerateVersionFiles(updates, dir)
 		return nil
 	}
 
+	// Should be called after logs are configured but before preferences are created.
+	migratePreferencesFromC10(cfg)
+
 	// ClearOldData before starting new bridge to do a proper setup.
 	//
 	// IMPORTANT: If you the change position of this you will need to wait
@@ -233,7 +159,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	if err != nil {
 		log.Warn("Bridge is already running")
 		if err := api.CheckOtherInstanceAndFocus(pref.GetInt(preferences.APIPortKey), tls); err != nil {
-			numberOfCrashes = maxAllowedCrashes
+			cmd.DisableRestart()
 			log.Error("Second instance: ", err)
 		}
 		return cli.NewExitError("Bridge is already running.", 3)
@@ -242,18 +168,12 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 
 	// In case user wants to do CPU or memory profiles...
 	if doCPUProfile := context.GlobalBool("cpu-prof"); doCPUProfile {
-		f, err := os.Create("cpu.pprof")
-		if err != nil {
-			log.Fatal("Could not create CPU profile: ", err)
-		}
-		if err := pprof.StartCPUProfile(f); err != nil {
-			log.Fatal("Could not start CPU profile: ", err)
-		}
+		cmd.StartCPUProfile()
 		defer pprof.StopCPUProfile()
 	}
 
 	if doMemoryProfile := context.GlobalBool("mem-prof"); doMemoryProfile {
-		defer makeMemoryProfile()
+		defer cmd.MakeMemoryProfile()
 	}
 
 	// Now we initialize all Bridge parts.
@@ -261,7 +181,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	eventListener := listener.New()
 	events.SetupEvents(eventListener)
 
-	credentialsStore, credentialsError := credentials.NewStore("bridge")
+	credentialsStore, credentialsError := credentials.NewStore(appName)
 	if credentialsError != nil {
 		log.Error("Could not get credentials store: ", credentialsError)
 	}
@@ -273,6 +193,14 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	// implementation depending on whether build flag pmapi_prod is used or not.
 	cm.SetRoundTripper(cfg.GetRoundTripper(cm, eventListener))
 
+	// Cookies must be persisted across restarts.
+	jar, err := cookies.NewCookieJar(pref)
+	if err != nil {
+		logrus.WithError(err).Warn("Could not create cookie jar")
+	} else {
+		cm.SetCookieJar(jar)
+	}
+
 	bridgeInstance := bridge.New(cfg, pref, panicHandler, eventListener, cm, credentialsStore)
 	imapBackend := imap.NewIMAPBackend(panicHandler, eventListener, cfg, bridgeInstance)
 	smtpBackend := smtp.NewSMTPBackend(panicHandler, eventListener, pref, bridgeInstance)
@@ -329,7 +257,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	}
 
 	if frontend.IsAppRestarting() {
-		restartApp()
+		cmd.RestartApp()
 	}
 
 	return nil
@@ -339,7 +267,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 // It will happen only when c10/prefs.json exists and c11/prefs.json not.
 // No configuration changed between c10 and c11 versions.
 func migratePreferencesFromC10(cfg *config.Config) {
-	pref10Path := config.New(constants.AppShortName, constants.Version, constants.Revision, "c10").GetPreferencesPath()
+	pref10Path := config.New(appName, constants.Version, constants.Revision, "c10").GetPreferencesPath()
 	if _, err := os.Stat(pref10Path); os.IsNotExist(err) {
 		log.WithField("path", pref10Path).Trace("Old preferences does not exist, migration skipped")
 		return
@@ -365,68 +293,3 @@ func migratePreferencesFromC10(cfg *config.Config) {
 
 	log.Info("Preferences migrated")
 }
-
-// generateVersionFiles writes a JSON file with details about current build.
-// Those files are used for upgrading the app.
-func generateVersionFiles(updates *updates.Updates, dir string) {
-	log.Info("Generating version files")
-	for _, goos := range []string{"windows", "darwin", "linux"} {
-		log.Debug("Generating JSON for ", goos)
-		if err := updates.CreateJSONAndSign(dir, goos); err != nil {
-			log.Error(err)
-		}
-	}
-}
-
-func makeMemoryProfile() {
-	name := "./mem.pprof"
-	f, err := os.Create(name)
-	if err != nil {
-		log.Error("Could not create memory profile: ", err)
-	}
-	if abs, err := filepath.Abs(name); err == nil {
-		name = abs
-	}
-	log.Info("Writing memory profile to ", name)
-	runtime.GC() // get up-to-date statistics
-	if err := pprof.WriteHeapProfile(f); err != nil {
-		log.Error("Could not write memory profile: ", err)
-	}
-	_ = f.Close()
-}
-
-// filterRestartNumberFromArgs removes flag with a number how many restart we already did.
-// See restartApp how that number is used.
-func filterRestartNumberFromArgs() {
-	tmp := os.Args[:0]
-	for i, arg := range os.Args {
-		if !strings.HasPrefix(arg, "--restart_") {
-			tmp = append(tmp, arg)
-			continue
-		}
-		var err error
-		numberOfCrashes, err = strconv.Atoi(os.Args[i][10:])
-		if err != nil {
-			numberOfCrashes = maxAllowedCrashes
-		}
-	}
-	os.Args = tmp
-}
-
-// restartApp starts a new instance in background.
-func restartApp() {
-	if numberOfCrashes >= maxAllowedCrashes {
-		log.Error("Too many crashes")
-		return
-	}
-	if exeFile, err := os.Executable(); err == nil {
-		arguments := append(os.Args[1:], fmt.Sprintf("--restart_%d", numberOfCrashes))
-		cmd := exec.Command(exeFile, arguments...) //nolint[gosec]
-		cmd.Stdout = os.Stdout
-		cmd.Stderr = os.Stderr
-		cmd.Stdin = os.Stdin
-		if err := cmd.Start(); err != nil {
-			log.Error("Restart failed: ", err)
-		}
-	}
-}

cmd/Import-Export/main.go

@@ -0,0 +1,177 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"runtime/pprof"
+
+	"github.com/ProtonMail/proton-bridge/internal/cmd"
+	"github.com/ProtonMail/proton-bridge/internal/cookies"
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/preferences"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
+	"github.com/ProtonMail/proton-bridge/internal/users/credentials"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/constants"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/allan-simon/go-singleinstance"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+const (
+	// cacheVersion is used for cache files such as lock, or preferences.
+	// Different number will drop old files and create new ones.
+	cacheVersion = "c11"
+
+	appName     = "importExport"
+	appNameDash = "import-export-app"
+)
+
+var (
+	log = logrus.WithField("pkg", "main") //nolint[gochecknoglobals]
+)
+
+func main() {
+	cmd.Main(
+		"ProtonMail Import-Export",
+		"ProtonMail Import-Export app",
+		nil,
+		run,
+	)
+}
+
+// run initializes and starts everything in a precise order.
+//
+// IMPORTANT: ***Read the comments before CHANGING the order ***
+func run(context *cli.Context) (contextError error) { // nolint[funlen]
+	// We need to have config instance to setup a logs, panic handler, etc ...
+	cfg := config.New(appName, constants.Version, constants.Revision, cacheVersion)
+
+	// We want to know about any problem. Our PanicHandler calls sentry which is
+	// not dependent on anything else. If that fails, it tries to create crash
+	// report which will not be possible if no folder can be created. That's the
+	// only problem we will not be notified about in any way.
+	panicHandler := &cmd.PanicHandler{
+		AppName: "ProtonMail Import-Export app",
+		Config:  cfg,
+		Err:     &contextError,
+	}
+	defer panicHandler.HandlePanic()
+
+	// First we need config and create necessary folder; it's dependency for everything.
+	if err := cfg.CreateDirs(); err != nil {
+		log.Fatal("Cannot create necessary folders: ", err)
+	}
+
+	// Setup of logs should be as soon as possible to ensure we record every wanted report in the log.
+	logLevel := context.GlobalString("log-level")
+	_, _ = config.SetupLog(cfg, logLevel)
+
+	// Doesn't make sense to continue when Import-Export was invoked with wrong arguments.
+	// We should tell that to the user before we do anything else.
+	if context.Args().First() != "" {
+		_ = cli.ShowAppHelp(context)
+		return cli.NewExitError("Unknown argument", 4)
+	}
+
+	// It's safe to get version JSON file even when other instance is running.
+	// (thus we put it before check of presence of other Import-Export instance).
+	updates := updates.NewImportExport(cfg.GetUpdateDir())
+
+	if dir := context.GlobalString("version-json"); dir != "" {
+		cmd.GenerateVersionFiles(updates, dir)
+		return nil
+	}
+
+	// Now we can try to proceed with starting the Import-Export. First we need to ensure
+	// this is the only instance. If not, we will end and focus the existing one.
+	lock, err := singleinstance.CreateLockFile(cfg.GetLockPath())
+	if err != nil {
+		log.Warn("Import-Export app is already running")
+		return cli.NewExitError("Import-Export app is already running.", 3)
+	}
+	defer lock.Close() //nolint[errcheck]
+
+	// In case user wants to do CPU or memory profiles...
+	if doCPUProfile := context.GlobalBool("cpu-prof"); doCPUProfile {
+		cmd.StartCPUProfile()
+		defer pprof.StopCPUProfile()
+	}
+
+	if doMemoryProfile := context.GlobalBool("mem-prof"); doMemoryProfile {
+		defer cmd.MakeMemoryProfile()
+	}
+
+	// Now we initialize all Import-Export parts.
+	log.Debug("Initializing import-export...")
+	eventListener := listener.New()
+	events.SetupEvents(eventListener)
+
+	credentialsStore, credentialsError := credentials.NewStore(appNameDash)
+	if credentialsError != nil {
+		log.Error("Could not get credentials store: ", credentialsError)
+	}
+
+	cm := pmapi.NewClientManager(cfg.GetAPIConfig())
+
+	// Different build types have different roundtrippers (e.g. we want to enable
+	// TLS fingerprint checks in production builds). GetRoundTripper has a different
+	// implementation depending on whether build flag pmapi_prod is used or not.
+	cm.SetRoundTripper(cfg.GetRoundTripper(cm, eventListener))
+
+	pref := preferences.New(cfg)
+
+	// Cookies must be persisted across restarts.
+	jar, err := cookies.NewCookieJar(pref)
+	if err != nil {
+		logrus.WithError(err).Warn("Could not create cookie jar")
+	} else {
+		cm.SetCookieJar(jar)
+	}
+
+	importexportInstance := importexport.New(cfg, panicHandler, eventListener, cm, credentialsStore)
+
+	// Decide about frontend mode before initializing rest of import-export.
+	var frontendMode string
+	switch {
+	case context.GlobalBool("cli"):
+		frontendMode = "cli"
+	default:
+		frontendMode = "qt"
+	}
+	log.WithField("mode", frontendMode).Debug("Determined frontend mode to use")
+
+	frontend := frontend.NewImportExport(constants.Version, constants.BuildVersion, frontendMode, panicHandler, cfg, eventListener, updates, importexportInstance)
+
+	// Last part is to start everything.
+	log.Debug("Starting frontend...")
+	if err := frontend.Loop(credentialsError); err != nil {
+		log.Error("Frontend failed with error: ", err)
+		return cli.NewExitError("Frontend error", 2)
+	}
+
+	if frontend.IsAppRestarting() {
+		cmd.RestartApp()
+	}
+
+	return nil
+}

doc/importexport.md

@@ -0,0 +1,135 @@
+# Import-Export app
+
+## Main blocks
+
+This is basic overview of the main Import-Export blocks.
+
+```mermaid
+graph LR
+    S[ProtonMail server]
+    U[User]
+
+    subgraph "Import-Export app"
+        Users
+        Frontend["Qt / CLI"]
+        ImportExport
+        Transfer
+
+        Frontend --> ImportExport
+        Frontend --> Transfer
+        ImportExport --> Users
+        ImportExport --> Transfer
+    end
+
+    EML --> Transfer
+    MBOX --> Transfer
+    IMAP --> Transfer
+    S --> Transfer
+
+    Transfer --> EML
+    Transfer --> MBOX
+    Transfer --> S
+
+    U --> Frontend
+```
+
+## Code structure
+
+More detailed graph of main types used in Import-Export app and connection between them.
+
+```mermaid
+graph TD
+    PM[ProtonMail Server]
+    EML[EML]
+    MBOX[MBOX]
+    IMAP[IMAP]
+
+    subgraph "Import-Export app"
+        subgraph "pkg users"
+            subgraph "pkg credentials"
+                CredStore[Store]
+                Creds[Credentials]
+
+                CredStore --> Creds
+            end
+
+            US[Users]
+            U[User]
+
+            US --> U
+        end
+
+        subgraph "pkg frontend"
+            CLI
+            Qt
+        end
+
+        subgraph "pkg importExport"
+            IE[ImportExport]
+        end
+
+        subgraph "pkg transfer"
+            Transfer
+            Rules
+            Progress
+
+            Provider
+            LocalProvider
+            EMLProvider
+            MBOXProvider
+            IMAPProvider
+            PMAPIProvider
+
+            Mailbox
+            Message
+
+            Transfer --> |source|Provider
+            Transfer --> |target|Provider
+            Transfer --> Rules
+            Transfer --> Progress
+
+            Provider --> LocalProvider
+            Provider --> EMLProvider
+            Provider --> MBOXProvider
+            Provider --> IMAPProvider
+            Provider --> PMAPIProvider
+
+            LocalProvider --> EMLProvider
+            LocalProvider --> MBOXProvider
+
+            Provider --> Mailbox
+            Provider --> Message
+
+        end
+
+        subgraph PMAPI
+            APIM[ClientManager]
+            APIC[Client]
+
+            APIM --> APIC
+        end
+    end
+
+    CLI --> IE
+    CLI --> Transfer
+    CLI --> Progress
+    Qt --> IE
+    Qt --> Transfer
+    Qt --> Progress
+
+    U --> CredStore
+    U --> Creds
+
+    US --> APIM
+    U --> APIM
+
+    PMAPIProvider --> APIM
+    EMLProvider --> EML
+    MBOXProvider --> MBOX
+    IMAPProvider --> IMAP
+
+    IE --> US
+    IE --> Transfer
+
+    APIC --> PM
+```

doc/index.md

@@ -2,8 +2,13 @@
 
 Documentation pages in order to read for a novice:
 
-* [Development cycle](development.md)
+## Bridge
+
 * [Bridge code](bridge.md)
 * [Internal Bridge database](database.md)
 * [Communication between Bridge, Client and Server](communication.md)
 * [Encryption](encryption.md)
+
+## Import-Export app
+
+* [Import-Export code](importexport.md)

go.mod

@@ -8,21 +8,22 @@ require (
 	github.com/docker/docker-credential-helpers v0.6.3
 	github.com/emersion/go-smtp v0.0.0-20180712174835-db5eec195e67
 	github.com/jameskeane/bcrypt v0.0.0-20170924085257-7509ea014998
-	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
 )
 
 require (
 	github.com/0xAX/notificator v0.0.0-20191016112426-3962a5ea8da1
+	github.com/Masterminds/semver/v3 v3.1.0
 	github.com/ProtonMail/go-appdir v1.1.0
 	github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6
 	github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a
 	github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde
 	github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5
 	github.com/ProtonMail/gopenpgp/v2 v2.0.1
+	github.com/PuerkitoBio/goquery v1.5.1
 	github.com/abiosoft/ishell v2.0.0+incompatible
 	github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db // indirect
 	github.com/allan-simon/go-singleinstance v0.0.0-20160830203053-79edcfdc2dfc
-	github.com/andybalholm/cascadia v1.1.0
 	github.com/certifi/gocertifi v0.0.0-20200211180108-c7c1fbc02894 // indirect
 	github.com/chzyer/logex v1.1.10 // indirect
 	github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 // indirect
@@ -32,42 +33,49 @@ require (
 	github.com/emersion/go-imap-idle v0.0.0-20200601154248-f05f54664cc4
 	github.com/emersion/go-imap-move v0.0.0-20190710073258-6e5a51a5b342
 	github.com/emersion/go-imap-quota v0.0.0-20200423100218-dcfd1b7d2b41
-	github.com/emersion/go-imap-specialuse v0.0.0-20161227184202-ba031ced6a62
+	github.com/emersion/go-imap-specialuse v0.0.0-20200722111535-598ff00e4075
 	github.com/emersion/go-imap-unselect v0.0.0-20171113212723-b985794e5f26
-	github.com/emersion/go-sasl v0.0.0-20191210011802-430746ea8b9b
+	github.com/emersion/go-mbox v1.0.0
+	github.com/emersion/go-message v0.12.1-0.20200903165315-e1abe21f389a
+	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
 	github.com/emersion/go-textwrapper v0.0.0-20160606182133-d0e65e56babe
 	github.com/emersion/go-vcard v0.0.0-20190105225839-8856043f13c5 // indirect
 	github.com/fatih/color v1.9.0
 	github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
 	github.com/getsentry/raven-go v0.2.0
-	github.com/go-resty/resty/v2 v2.2.0
-	github.com/golang/mock v1.4.3
-	github.com/google/go-cmp v0.4.0
+	github.com/go-resty/resty/v2 v2.3.0
+	github.com/golang/mock v1.4.4
+	github.com/google/go-cmp v0.5.1
+	github.com/google/uuid v1.1.1
 	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
-	github.com/hashicorp/go-multierror v1.0.0
-	github.com/jaytaylor/html2text v0.0.0-20200220170450-61d9dc4d7195
-	github.com/jhillyerd/enmime v0.8.0
+	github.com/hashicorp/go-multierror v1.1.0
+	github.com/jaytaylor/html2text v0.0.0-20200412013138-3577fbdbcff7
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0
-	github.com/keybase/go-keychain v0.0.0-20200218013740-86d4642e4ce2
-	github.com/logrusorgru/aurora v0.0.0-20200102142835-e9ef32dff381
-	github.com/miekg/dns v1.1.29
+	github.com/keybase/go-keychain v0.0.0-20200502122510-cda31fe0c86d
+	github.com/logrusorgru/aurora v2.0.3+incompatible
+	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/miekg/dns v1.1.30
 	github.com/myesui/uuid v1.0.0 // indirect
-	github.com/nsf/jsondiff v0.0.0-20190712045011-8443391ee9b6
+	github.com/nsf/jsondiff v0.0.0-20200515183724-f29ed568f4ce
+	github.com/olekukonko/tablewriter v0.0.4 // indirect
 	github.com/pkg/errors v0.9.1
-	github.com/sirupsen/logrus v1.4.2
+	github.com/sirupsen/logrus v1.6.0
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966
-	github.com/stretchr/testify v1.5.1
-	github.com/therecipe/qt v0.0.0-20200126204426-5074eb6d8c41
+	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
+	github.com/stretchr/testify v1.6.1
+	github.com/therecipe/qt v0.0.0-20200701200531-7f61353ee73e
 	github.com/twinj/uuid v1.0.0 // indirect
-	github.com/urfave/cli v1.22.3
+	github.com/urfave/cli v1.22.4
 	go.etcd.io/bbolt v1.3.5
-	golang.org/x/net v0.0.0-20200301022130-244492dfa37a
-	golang.org/x/text v0.3.2
+	golang.org/x/net v0.0.0-20200707034311-ab3426394381
+	golang.org/x/text v0.3.3
 	gopkg.in/stretchr/testify.v1 v1.2.2 // indirect
 )
 
 replace (
 	github.com/docker/docker-credential-helpers => github.com/ProtonMail/docker-credential-helpers v1.1.0
+	github.com/emersion/go-imap => github.com/ProtonMail/go-imap v0.0.0-20200828124548-d04b0dc1f399
+	github.com/emersion/go-mbox => github.com/ProtonMail/mbox v0.0.0-20200918064939-909a18c9af45
 	github.com/emersion/go-smtp => github.com/ProtonMail/go-smtp v0.0.0-20181206232543-8261df20d309
 	github.com/jameskeane/bcrypt => github.com/ProtonMail/bcrypt v0.0.0-20170924085257-7509ea014998
 	golang.org/x/crypto => github.com/ProtonMail/crypto v0.0.0-20200416114516-1fa7f403fb9c

go.sum

@@ -1,6 +1,9 @@
 github.com/0xAX/notificator v0.0.0-20191016112426-3962a5ea8da1 h1:j9HaafapDbPbGRDku6e/HRs6KBMcKHiWcm1/9Sbxnl4=
 github.com/0xAX/notificator v0.0.0-20191016112426-3962a5ea8da1/go.mod h1:NtXa9WwQsukMHZpjNakTTz0LArxvGYdPA9CjIcUSZ6s=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
+github.com/Masterminds/semver/v3 v3.1.0 h1:Y2lUDsFKVRSYGojLJ1yLxSXdMmMYTYls0rCvoqmMUQk=
+github.com/Masterminds/semver/v3 v3.1.0/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/ProtonMail/bcrypt v0.0.0-20170924085257-7509ea014998 h1:YT2uVwQiRQZxCaaahwfcgTq2j3j66w00n/27gb/zubs=
 github.com/ProtonMail/bcrypt v0.0.0-20170924085257-7509ea014998/go.mod h1:HecWFHognK8GfRDGnFQbW/LiV7A3MX3gZVs45vk5h8I=
 github.com/ProtonMail/crypto v0.0.0-20200416114516-1fa7f403fb9c h1:DAvlgde2Stu18slmjwikiMPs/CKPV35wSvmJS34z0FU=
@@ -13,6 +16,8 @@ github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6 h
 github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6/go.mod h1:EtDfBMIDWmVe4viZCuBTEfe3OIIo0ghbpOaAZVO+hVg=
 github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a h1:fXK2KsfnkBV9Nh+9SKzHchYjuE9s0vI20JG1mbtEAcc=
 github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a/go.mod h1:oTGdE7/DlWIr23G0IKW3OXK9wZ5Hw1GGiaJFccTvZi4=
+github.com/ProtonMail/go-imap v0.0.0-20200828124548-d04b0dc1f399 h1:wBo/Xgb/Dn2loU47D+PJaOoIZ67i3AqYp51gLn8YE5U=
+github.com/ProtonMail/go-imap v0.0.0-20200828124548-d04b0dc1f399/go.mod h1:yKASt+C3ZiDAiCSssxg9caIckWF/JG7ZQTO7GAmvicU=
 github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde h1:5koQozTDELymYOyFbQ/VSubexAEXzDR8qGM5mO8GRdw=
 github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde/go.mod h1:795VPXcRUIQ9JyMNHP4el582VokQfippgjkQP3Gk0r0=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a h1:W6RrgN/sTxg1msqzFFb+G80MFmpjMw61IU+slm+wln4=
@@ -23,6 +28,10 @@ github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5 h1:Uga1DHFN4GU
 github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5/go.mod h1:oeP9CMN+ajWp5jKp1kue5daJNwMMxLF+ujPaUIoJWlA=
 github.com/ProtonMail/gopenpgp/v2 v2.0.1 h1:x0uvDhry5WzoHeJO4J3dgMLhG4Z9PeBJ2O+sDOY0LcU=
 github.com/ProtonMail/gopenpgp/v2 v2.0.1/go.mod h1:wQQCJo7DURO6S9VwH+kSDEYs/B63yZnAEfGlOg8YNBY=
+github.com/ProtonMail/mbox v0.0.0-20200918064939-909a18c9af45 h1:GDh55hDI2sNiirDqEWV8b6EB729u78Qxu3nKF970n6g=
+github.com/ProtonMail/mbox v0.0.0-20200918064939-909a18c9af45/go.mod h1:Yp9IVuuOYLEuMv4yjgDHvhb5mHOcYH6x92Oas3QqEZI=
+github.com/PuerkitoBio/goquery v1.5.1 h1:PSPBGne8NIUWw+/7vFBV+kG2J/5MOjbzc7154OaKCSE=
+github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
 github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma7oZPxr03tlmmw=
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db h1:CjPUSXOiYptLbTdr1RceuZgSFDQ7U15ITERUGrUORx8=
@@ -31,8 +40,6 @@ github.com/allan-simon/go-singleinstance v0.0.0-20160830203053-79edcfdc2dfc h1:m
 github.com/allan-simon/go-singleinstance v0.0.0-20160830203053-79edcfdc2dfc/go.mod h1:qqsTQiwdyqxU05iDCsi0oN3P4nrVxAmn8xCtODDSf/U=
 github.com/andybalholm/cascadia v1.1.0 h1:BuuO6sSfQNFRu1LppgbD25Hr2vLYW25JvxHs5zzsLTo=
 github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
-github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a h1:MISbI8sU/PSK/ztvmWKFcI7UGb5/HQT7B+i3a2myKgI=
-github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a/go.mod h1:2GxOXOlEPAMFPfp014mK1SWq8G8BN8o7/dfYqJrVGn8=
 github.com/certifi/gocertifi v0.0.0-20200211180108-c7c1fbc02894 h1:JLaf/iINcLyjwbtTsCJjc6rtlASgHeIJPrB6QmwURnA=
 github.com/certifi/gocertifi v0.0.0-20200211180108-c7c1fbc02894/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
 github.com/chzyer/logex v1.1.10 h1:Swpa1K6QvQznwJRcfTfQJmTE72DqScAa40E+fbHEXEE=
@@ -41,6 +48,7 @@ github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 h1:q763qf9huN11kDQavWs
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cucumber/godog v0.8.1 h1:lVb+X41I4YDreE+ibZ50bdXmySxgRviYFgKY6Aw4XE8=
 github.com/cucumber/godog v0.8.1/go.mod h1:vSh3r/lM+psC1BPXvdkSEuNjmXfpVqrMGYAElF6hxnA=
 github.com/danieljoos/wincred v1.1.0 h1:3RNcEpBg4IhIChZdFRSdlQt1QjCp1sMAPIrOnm7Yf8g=
@@ -48,8 +56,6 @@ github.com/danieljoos/wincred v1.1.0/go.mod h1:XYlo+eRTsVA9aHGp7NGjFkPla4m+DCL7h
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/emersion/go-imap v1.0.6-0.20200708083111-011063d6c9df h1:Vlwnsd5P5s+ek+wzEXbZ/g9tUBndVQAb3E1/+/ya3UQ=
-github.com/emersion/go-imap v1.0.6-0.20200708083111-011063d6c9df/go.mod h1:yKASt+C3ZiDAiCSssxg9caIckWF/JG7ZQTO7GAmvicU=
 github.com/emersion/go-imap-appendlimit v0.0.0-20190308131241-25671c986a6a h1:bMdSPm6sssuOFpIaveu3XGAijMS3Tq2S3EqFZmZxidc=
 github.com/emersion/go-imap-appendlimit v0.0.0-20190308131241-25671c986a6a/go.mod h1:ikgISoP7pRAolqsVP64yMteJa2FIpS6ju88eBT6K1yQ=
 github.com/emersion/go-imap-idle v0.0.0-20200601154248-f05f54664cc4 h1:/JIALzmCduf5o8TWJSiOBzTb9+R0SChwElUrJLlp2po=
@@ -58,14 +64,18 @@ github.com/emersion/go-imap-move v0.0.0-20190710073258-6e5a51a5b342 h1:5p1t3e1Po
 github.com/emersion/go-imap-move v0.0.0-20190710073258-6e5a51a5b342/go.mod h1:QuMaZcKFDVI0yCrnAbPLfbwllz1wtOrZH8/vZ5yzp4w=
 github.com/emersion/go-imap-quota v0.0.0-20200423100218-dcfd1b7d2b41 h1:z5lDGnSURauBEDdNLj3o0+HogVYKQCGeY3Anl/xyRfU=
 github.com/emersion/go-imap-quota v0.0.0-20200423100218-dcfd1b7d2b41/go.mod h1:iApyhIQBiU4XFyr+3kdJyyGqle82TbQyuP2o+OZHrV0=
-github.com/emersion/go-imap-specialuse v0.0.0-20161227184202-ba031ced6a62 h1:4ZAfwfc8aDlj26kkEap1UDSwwDnJp9Ie8Uj1MSXAkPk=
-github.com/emersion/go-imap-specialuse v0.0.0-20161227184202-ba031ced6a62/go.mod h1:/nybxhI8kXom8Tw6BrHMl42usALvka6meORflnnYwe4=
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@@ -76,37 +86,40 @@ github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BMXYYRWT
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@@ -131,13 +147,12 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
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@@ -149,14 +164,15 @@ github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoH
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/therecipe/qt v0.0.0-20200126204426-5074eb6d8c41 h1:yBVcrpbaQYJBdKT2pxTdlL4hBE/eM4UPcyj9YpyvSok=
-github.com/therecipe/qt v0.0.0-20200126204426-5074eb6d8c41/go.mod h1:SUUR2j3aE1z6/g76SdD6NwACEpvCxb3fvG82eKbD6us=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/therecipe/qt v0.0.0-20200701200531-7f61353ee73e h1:G0DQ/TRQyrEZjtLlLwevFjaRiG8eeCMlq9WXQ2OO2bk=
+github.com/therecipe/qt v0.0.0-20200701200531-7f61353ee73e/go.mod h1:SUUR2j3aE1z6/g76SdD6NwACEpvCxb3fvG82eKbD6us=
 github.com/twinj/uuid v1.0.0 h1:fzz7COZnDrXGTAOHGuUGYd6sG+JMq+AoE7+Jlu0przk=
 github.com/twinj/uuid v1.0.0/go.mod h1:mMgcE1RHFUFqe5AfiwlINXisXfDGro23fWdPUfOMjRY=
-github.com/urfave/cli v1.22.3 h1:FpNT6zq26xNpHZy08emi755QwzLPs6Pukqjlc7RfOMU=
-github.com/urfave/cli v1.22.3/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
+github.com/urfave/cli v1.22.4 h1:u7tSpNPPswAFymm8IehJhy4uJMlUuU/GmqSkvJ1InXA=
+github.com/urfave/cli v1.22.4/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 go.etcd.io/bbolt v1.3.5 h1:XAzx9gjCb0Rxj7EoqcClPD1d5ZBxZJk0jbuoPHenBt0=
 go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
@@ -165,11 +181,11 @@ golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190420063019-afa5a82059c6/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200301022130-244492dfa37a h1:GuSPYbZzB5/dcLNCwLQLsg3obCJtX9IJhpXkvY7kzk0=
-golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200513185701-a91f0712d120/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
+golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
+golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -179,27 +195,27 @@ golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190419153524-e8e3143a4f4a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5 h1:LfCXLvNmTYH9kEmVgqbnsWfruoXZIrh4YBgqVHtDvw0=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190420181800-aa740d480789/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/tools v0.0.0-20191216052735-49a3e744a425 h1:VvQyQJN0tSuecqgcIxMWnnfG5kSmgy9KZR9sW3W5QeA=
 golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/stretchr/testify.v1 v1.2.2 h1:yhQC6Uy5CqibAIlk1wlusa/MJ3iAN49/BsR/dCCKz3M=
 gopkg.in/stretchr/testify.v1 v1.2.2/go.mod h1:QI5V/q6UbPmuhtm10CaFZxED9NreB8PnFYN9JcR6TxU=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/bridge/bridge.go

@@ -25,6 +25,7 @@ import (
 	"github.com/ProtonMail/proton-bridge/internal/metrics"
 	"github.com/ProtonMail/proton-bridge/internal/preferences"
 	"github.com/ProtonMail/proton-bridge/internal/users"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
 
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	logrus "github.com/sirupsen/logrus"
@@ -60,7 +61,7 @@ func New(
 	}
 
 	storeFactory := newStoreFactory(config, panicHandler, clientManager, eventListener)
-	u := users.New(config, panicHandler, eventListener, clientManager, credStorer, storeFactory)
+	u := users.New(config, panicHandler, eventListener, clientManager, credStorer, storeFactory, true)
 	b := &Bridge{
 		Users: u,
 
@@ -70,6 +71,7 @@ func New(
 
 	if pref.GetBool(preferences.FirstStartKey) {
 		b.SendMetric(metrics.New(metrics.Setup, metrics.FirstStart, metrics.Label(config.GetVersion())))
+		pref.SetBool(preferences.FirstStartKey, false)
 	}
 
 	go b.heartbeat()
@@ -129,15 +131,17 @@ func (b *Bridge) ReportBug(osType, osVersion, description, accountName, address,
 	defer c.Logout()
 
 	title := "[Bridge] Bug"
-	if err := c.ReportBugWithEmailClient(
-		osType,
-		osVersion,
-		title,
-		description,
-		accountName,
-		address,
-		emailClient,
-	); err != nil {
+	report := pmapi.ReportReq{
+		OS:          osType,
+		OSVersion:   osVersion,
+		Browser:     emailClient,
+		Title:       title,
+		Description: description,
+		Username:    accountName,
+		Email:       address,
+	}
+
+	if err := c.Report(report); err != nil {
 		log.Error("Reporting bug failed: ", err)
 		return err
 	}

internal/bridge/credits.go

@@ -15,8 +15,8 @@
 // You should have received a copy of the GNU General Public License
 // along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-// Code generated by ./credits.sh at Wed 29 Jul 2020 06:44:08 AM CEST. DO NOT EDIT.
+// Code generated by ./credits.sh at Tue Sep 29 14:56:25 CEST 2020. DO NOT EDIT.
 
 package bridge
 
-const Credits = "github.com/0xAX/notificator;github.com/abiosoft/ishell;github.com/abiosoft/readline;github.com/allan-simon/go-singleinstance;github.com/andybalholm/cascadia;github.com/certifi/gocertifi;github.com/chzyer/logex;github.com/chzyer/test;github.com/cucumber/godog;github.com/docker/docker-credential-helpers;github.com/emersion/go-imap;github.com/emersion/go-imap-appendlimit;github.com/emersion/go-imap-idle;github.com/emersion/go-imap-move;github.com/emersion/go-imap-quota;github.com/emersion/go-imap-specialuse;github.com/emersion/go-imap-unselect;github.com/emersion/go-sasl;github.com/emersion/go-smtp;github.com/emersion/go-textwrapper;github.com/emersion/go-vcard;github.com/fatih/color;github.com/flynn-archive/go-shlex;github.com/getsentry/raven-go;github.com/golang/mock;github.com/google/go-cmp;github.com/gopherjs/gopherjs;github.com/go-resty/resty/v2;github.com/hashicorp/go-multierror;github.com/jameskeane/bcrypt;github.com/jaytaylor/html2text;github.com/jhillyerd/enmime;github.com/kardianos/osext;github.com/keybase/go-keychain;github.com/logrusorgru/aurora;github.com/miekg/dns;github.com/myesui/uuid;github.com/nsf/jsondiff;github.com/pkg/errors;github.com/ProtonMail/bcrypt;github.com/ProtonMail/crypto;github.com/ProtonMail/docker-credential-helpers;github.com/ProtonMail/go-appdir;github.com/ProtonMail/go-apple-mobileconfig;github.com/ProtonMail/go-autostart;github.com/ProtonMail/go-imap-id;github.com/ProtonMail/gopenpgp/v2;github.com/ProtonMail/go-smtp;github.com/ProtonMail/go-vcard;github.com/sirupsen/logrus;github.com/skratchdot/open-golang;github.com/stretchr/testify;github.com/therecipe/qt;github.com/twinj/uuid;github.com/urfave/cli;go.etcd.io/bbolt;golang.org/x/crypto;golang.org/x/net;golang.org/x/text;gopkg.in/stretchr/testify.v1;;Font Awesome 4.7.0;;Qt 5.13 by Qt group;"
+const Credits = "github.com/0xAX/notificator;github.com/Masterminds/semver/v3;github.com/ProtonMail/bcrypt;github.com/ProtonMail/crypto;github.com/ProtonMail/docker-credential-helpers;github.com/ProtonMail/go-appdir;github.com/ProtonMail/go-apple-mobileconfig;github.com/ProtonMail/go-autostart;github.com/ProtonMail/go-imap;github.com/ProtonMail/go-imap-id;github.com/ProtonMail/go-smtp;github.com/ProtonMail/go-vcard;github.com/ProtonMail/gopenpgp/v2;github.com/ProtonMail/mbox;github.com/PuerkitoBio/goquery;github.com/abiosoft/ishell;github.com/abiosoft/readline;github.com/allan-simon/go-singleinstance;github.com/certifi/gocertifi;github.com/chzyer/logex;github.com/chzyer/test;github.com/cucumber/godog;github.com/docker/docker-credential-helpers;github.com/emersion/go-imap;github.com/emersion/go-imap-appendlimit;github.com/emersion/go-imap-idle;github.com/emersion/go-imap-move;github.com/emersion/go-imap-quota;github.com/emersion/go-imap-specialuse;github.com/emersion/go-imap-unselect;github.com/emersion/go-mbox;github.com/emersion/go-message;github.com/emersion/go-sasl;github.com/emersion/go-smtp;github.com/emersion/go-textwrapper;github.com/emersion/go-vcard;github.com/fatih/color;github.com/flynn-archive/go-shlex;github.com/getsentry/raven-go;github.com/go-resty/resty/v2;github.com/golang/mock;github.com/google/go-cmp;github.com/google/uuid;github.com/gopherjs/gopherjs;github.com/hashicorp/go-multierror;github.com/jameskeane/bcrypt;github.com/jaytaylor/html2text;github.com/kardianos/osext;github.com/keybase/go-keychain;github.com/logrusorgru/aurora;github.com/mattn/go-runewidth;github.com/miekg/dns;github.com/myesui/uuid;github.com/nsf/jsondiff;github.com/olekukonko/tablewriter;github.com/pkg/errors;github.com/sirupsen/logrus;github.com/skratchdot/open-golang;github.com/ssor/bom;github.com/stretchr/testify;github.com/therecipe/qt;github.com/twinj/uuid;github.com/urfave/cli;go.etcd.io/bbolt;golang.org/x/crypto;golang.org/x/net;golang.org/x/text;gopkg.in/stretchr/testify.v1;;Font Awesome 4.7.0;;Qt 5.13 by Qt group;"

internal/bridge/release_notes.go

@@ -15,17 +15,21 @@
 // You should have received a copy of the GNU General Public License
 // along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-// Code generated by ./release-notes.sh at Wed 29 Jul 2020 07:07:28 AM CEST. DO NOT EDIT.
+// Code generated by ./release-notes.sh at 'Mon Sep 21 01:29:10 PM CEST 2020'. DO NOT EDIT.
 
 package bridge
 
-const ReleaseNotes = `• Improvements to Alternative Routing: Version two of this feature is now more resilient to unstable internet connections, which results in a smoother experience using this feature. Also includes fixes to previous implementation of Alternative Routing when first starting the application or when turning it off.
-• Email parsing improvements: Improved detection of email encodings embedded in html/xml in addition to message header; add a fallback option if encoding is not specified and decoding as UTF8 fails (ISO-8859-1) ; tweaked logic of parsing "References" header.
-• User interaction improvements: Some smaller improvements in specific cases to make the interaction with Proton Bridge clearer for the user
-• Code updates & maintenance: Migrated to GopenPGP v2, updates to GoIMAPv1, increased bbolt version to 1.3.5 and various improvements regarding extensibility and maintainability for upcoming work.
-• General stability improvements: Improvements to the behavior of the application under various unstable internet conditions.
+const ReleaseNotes = `• Bulletproofing against any potential data loss and/or duplication
+• Performance improvements for handling attachments and non-standard formatting
+• Better stability of the message parser
+• Additional foreign encoding support for outgoing messages
+• Complete refactor of the way messages are parsed to simplify code maintenance
+• Improved User-Agent detection
+• Added MacOS Big Sur compatibility
+• Added persistent anonymous API cookies
 `
 
-const ReleaseFixedBugs = `• Fixed a slew of smaller bugs and some conditions which could cause the application to crash.
-• The full changelog can be found at https://github.com/ProtonMail/proton-bridge/blob/master/Changelog.md
+const ReleaseFixedBugs = `• Fixed rare mail loss when moving from Spam folder
+• Limited log size
+• Fixed Linux font issues (mouse hover).
 `

internal/bridge/types.go

@@ -32,6 +32,7 @@ type StoreFactoryConfiger interface {
 type PreferenceProvider interface {
 	Get(key string) string
 	GetBool(key string) bool
+	SetBool(key string, val bool)
 	GetInt(key string) int
 	Set(key string, value string)
 }

internal/cmd/args.go

@@ -15,16 +15,16 @@
 // You should have received a copy of the GNU General Public License
 // along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-package args
+package cmd
 
 import (
 	"os"
 	"strings"
 )
 
-// FilterProcessSerialNumberFromArgs removes additional flag from MacOS. More info ProcessSerialNumber
+// filterProcessSerialNumberFromArgs removes additional flag from MacOS. More info ProcessSerialNumber
 // http://mirror.informatimago.com/next/developer.apple.com/documentation/Carbon/Reference/Process_Manager/prmref_main/data_type_5.html#//apple_ref/doc/uid/TP30000208/C001951
-func FilterProcessSerialNumberFromArgs() {
+func filterProcessSerialNumberFromArgs() {
 	tmp := os.Args[:0]
 	for _, arg := range os.Args {
 		if !strings.Contains(arg, "-psn_") {

internal/cmd/main.go

@@ -0,0 +1,86 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"os"
+	"runtime"
+
+	"github.com/ProtonMail/proton-bridge/pkg/constants"
+	"github.com/getsentry/raven-go"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+var (
+	log = logrus.WithField("pkg", "cmd") //nolint[gochecknoglobals]
+
+	baseFlags = []cli.Flag{ //nolint[gochecknoglobals]
+		cli.StringFlag{
+			Name:  "log-level, l",
+			Usage: "Set the log level (one of panic, fatal, error, warn, info, debug, debug-client, debug-server)"},
+		cli.BoolFlag{
+			Name:  "cli, c",
+			Usage: "Use command line interface"},
+		cli.StringFlag{
+			Name:  "version-json, g",
+			Usage: "Generate json version file"},
+		cli.BoolFlag{
+			Name:  "mem-prof, m",
+			Usage: "Generate memory profile"},
+		cli.BoolFlag{
+			Name:  "cpu-prof, p",
+			Usage: "Generate CPU profile"},
+	}
+)
+
+// Main sets up Sentry, filters out unwanted args, creates app and runs it.
+func Main(appName, usage string, extraFlags []cli.Flag, run func(*cli.Context) error) {
+	if err := raven.SetDSN(constants.DSNSentry); err != nil {
+		log.WithError(err).Errorln("Can not setup sentry DSN")
+	}
+	raven.SetRelease(constants.Revision)
+
+	filterProcessSerialNumberFromArgs()
+	filterRestartNumberFromArgs()
+
+	app := newApp(appName, usage, extraFlags, run)
+
+	logrus.SetLevel(logrus.InfoLevel)
+	log.WithField("version", constants.Version).
+		WithField("revision", constants.Revision).
+		WithField("build", constants.BuildTime).
+		WithField("runtime", runtime.GOOS).
+		WithField("args", os.Args).
+		WithField("appName", app.Name).
+		Info("Run app")
+
+	if err := app.Run(os.Args); err != nil {
+		log.Error("Program exited with error: ", err)
+	}
+}
+
+func newApp(appName, usage string, extraFlags []cli.Flag, run func(*cli.Context) error) *cli.App {
+	app := cli.NewApp()
+	app.Name = appName
+	app.Usage = usage
+	app.Version = constants.BuildVersion
+	app.Flags = append(baseFlags, extraFlags...) //nolint[gocritic]
+	app.Action = run
+	return app
+}

internal/cmd/profiles.go

@@ -0,0 +1,54 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"runtime/pprof"
+)
+
+// StartCPUProfile starts CPU pprof.
+func StartCPUProfile() {
+	f, err := os.Create("./cpu.pprof")
+	if err != nil {
+		log.Fatal("Could not create CPU profile: ", err)
+	}
+	if err := pprof.StartCPUProfile(f); err != nil {
+		log.Fatal("Could not start CPU profile: ", err)
+	}
+}
+
+// MakeMemoryProfile generates memory pprof.
+func MakeMemoryProfile() {
+	name := "./mem.pprof"
+	f, err := os.Create(name)
+	if err != nil {
+		log.Fatal("Could not create memory profile: ", err)
+	}
+	if abs, err := filepath.Abs(name); err == nil {
+		name = abs
+	}
+	log.Info("Writing memory profile to ", name)
+	runtime.GC() // get up-to-date statistics
+	if err := pprof.WriteHeapProfile(f); err != nil {
+		log.Fatal("Could not write memory profile: ", err)
+	}
+	_ = f.Close()
+}

internal/cmd/restart.go

@@ -0,0 +1,108 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/urfave/cli"
+)
+
+const (
+	// After how many crashes app gives up starting.
+	maxAllowedCrashes = 10
+)
+
+var (
+	// How many crashes happened so far in a row.
+	// It will be filled from args by `filterRestartNumberFromArgs`.
+	// Every call of `HandlePanic` will increase this number.
+	// Then it will be passed as argument to the next try by `RestartApp`.
+	numberOfCrashes = 0 //nolint[gochecknoglobals]
+)
+
+// filterRestartNumberFromArgs removes flag with a number how many restart we already did.
+// See restartApp how that number is used.
+func filterRestartNumberFromArgs() {
+	tmp := os.Args[:0]
+	for i, arg := range os.Args {
+		if !strings.HasPrefix(arg, "--restart_") {
+			tmp = append(tmp, arg)
+			continue
+		}
+		var err error
+		numberOfCrashes, err = strconv.Atoi(os.Args[i][10:])
+		if err != nil {
+			numberOfCrashes = maxAllowedCrashes
+		}
+	}
+	os.Args = tmp
+}
+
+// DisableRestart disables restart once `RestartApp` is called.
+func DisableRestart() {
+	numberOfCrashes = maxAllowedCrashes
+}
+
+// RestartApp starts a new instance in background.
+func RestartApp() {
+	if numberOfCrashes >= maxAllowedCrashes {
+		log.Error("Too many crashes")
+		return
+	}
+	if exeFile, err := os.Executable(); err == nil {
+		arguments := append(os.Args[1:], fmt.Sprintf("--restart_%d", numberOfCrashes))
+		cmd := exec.Command(exeFile, arguments...) //nolint[gosec]
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Stdin = os.Stdin
+		if err := cmd.Start(); err != nil {
+			log.Error("Restart failed: ", err)
+		}
+	}
+}
+
+// PanicHandler defines HandlePanic which can be used anywhere in defer.
+type PanicHandler struct {
+	AppName string
+	Config  *config.Config
+	Err     *error // Pointer to error of cli action.
+}
+
+// HandlePanic should be called in defer to ensure restart of app after error.
+func (ph *PanicHandler) HandlePanic() {
+	r := recover()
+	if r == nil {
+		return
+	}
+
+	config.HandlePanic(ph.Config, fmt.Sprintf("Recover: %v", r))
+	frontend.HandlePanic(ph.AppName)
+
+	*ph.Err = cli.NewExitError("Panic and restart", 255)
+	numberOfCrashes++
+	log.Error("Restarting after panic")
+	RestartApp()
+	os.Exit(255)
+}

internal/cmd/version_file.go

@@ -0,0 +1,32 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import "github.com/ProtonMail/proton-bridge/internal/updates"
+
+// GenerateVersionFiles writes a JSON file with details about current build.
+// Those files are used for upgrading the app.
+func GenerateVersionFiles(updates *updates.Updates, dir string) {
+	log.Info("Generating version files")
+	for _, goos := range []string{"windows", "darwin", "linux"} {
+		log.Debug("Generating JSON for ", goos)
+		if err := updates.CreateJSONAndSign(dir, goos); err != nil {
+			log.Error(err)
+		}
+	}
+}

internal/cookies/jar.go

@@ -0,0 +1,92 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Package cookies implements a persistent cookie jar which satisfies the http.CookieJar interface.
+package cookies
+
+import (
+	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"sync"
+
+	"github.com/sirupsen/logrus"
+)
+
+// Jar implements http.CookieJar by wrapping the standard library's cookiejar.Jar.
+// The jar uses a pantry to load cookies at startup and save cookies when set.
+type Jar struct {
+	jar    *cookiejar.Jar
+	pantry *pantry
+	locker sync.Locker
+}
+
+type GetterSetter interface {
+	Get(string) string
+	Set(string, string)
+}
+
+func NewCookieJar(gs GetterSetter) (*Jar, error) {
+	pantry := &pantry{gs: gs}
+
+	if err := pantry.discardExpiredCookies(); err != nil {
+		return nil, err
+	}
+
+	cookies, err := pantry.loadFromJSON()
+	if err != nil {
+		return nil, err
+	}
+
+	jar, err := cookiejar.New(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	for rawURL, cookies := range cookies {
+		url, err := url.Parse(rawURL)
+		if err != nil {
+			continue
+		}
+
+		jar.SetCookies(url, cookies)
+	}
+
+	return &Jar{
+		jar:    jar,
+		pantry: pantry,
+		locker: &sync.Mutex{},
+	}, nil
+}
+
+func (j *Jar) SetCookies(u *url.URL, cookies []*http.Cookie) {
+	j.locker.Lock()
+	defer j.locker.Unlock()
+
+	j.jar.SetCookies(u, cookies)
+
+	if err := j.pantry.persistCookies(u.Scheme+"://"+u.Host, cookies); err != nil {
+		logrus.WithError(err).Warn("Failed to persist cookie")
+	}
+}
+
+func (j *Jar) Cookies(u *url.URL) []*http.Cookie {
+	j.locker.Lock()
+	defer j.locker.Unlock()
+
+	return j.jar.Cookies(u)
+}

internal/cookies/jar_test.go

@@ -0,0 +1,168 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cookies
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestJarGetSet(t *testing.T) {
+	ts := getTestServer(t, []testCookie{
+		{"TestName1", "TestValue1", 3600},
+		{"TestName2", "TestValue2", 3600},
+		{"TestName3", "TestValue3", 3600},
+	})
+	defer ts.Close()
+
+	client := getClientWithJar(t, make(testGetterSetter))
+
+	// Hit a server that sets some cookies.
+	setRes, err := client.Get(ts.URL + "/set")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, setRes.Body.Close())
+
+	// Hit a server that checks the cookies are there.
+	getRes, err := client.Get(ts.URL + "/get")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, getRes.Body.Close())
+}
+
+func TestJarLoad(t *testing.T) {
+	ts := getTestServer(t, []testCookie{
+		{"TestName1", "TestValue1", 3600},
+		{"TestName2", "TestValue2", 3600},
+		{"TestName3", "TestValue3", 3600},
+	})
+	defer ts.Close()
+
+	// This will be our "persistent storage" from which the cookie jar should load cookies.
+	gs := make(testGetterSetter)
+
+	// This client saves cookies to persistent storage.
+	oldClient := getClientWithJar(t, gs)
+
+	// Hit a server that sets some cookies.
+	setRes, err := oldClient.Get(ts.URL + "/set")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, setRes.Body.Close())
+
+	// This client loads cookies from persistent storage.
+	newClient := getClientWithJar(t, gs)
+
+	// Hit a server that checks the cookies are there.
+	getRes, err := newClient.Get(ts.URL + "/get")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, getRes.Body.Close())
+}
+
+func TestJarExpiry(t *testing.T) {
+	ts := getTestServer(t, []testCookie{
+		{"TestName1", "TestValue1", 3600},
+		{"TestName2", "TestValue2", 1},
+		{"TestName3", "TestValue3", 3600},
+	})
+	defer ts.Close()
+
+	// This will be our "persistent storage" from which the cookie jar should load cookies.
+	gs := make(testGetterSetter)
+
+	// This client saves cookies to persistent storage.
+	oldClient := getClientWithJar(t, gs)
+
+	// Hit a server that sets some cookies.
+	setRes, err := oldClient.Get(ts.URL + "/set")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, setRes.Body.Close())
+
+	// Wait until the second cookie expires.
+	time.Sleep(2 * time.Second)
+
+	// Load a client, which will clear out expired cookies.
+	_ = getClientWithJar(t, gs)
+
+	assert.Contains(t, gs["cookies"], "TestName1")
+	assert.NotContains(t, gs["cookies"], "TestName2")
+	assert.Contains(t, gs["cookies"], "TestName3")
+}
+
+type testCookie struct {
+	name, value string
+	maxAge      int
+}
+
+func getClientWithJar(t *testing.T, gs GetterSetter) *http.Client {
+	jar, err := NewCookieJar(gs)
+	require.NoError(t, err)
+
+	return &http.Client{Jar: jar}
+}
+
+func getTestServer(t *testing.T, wantCookies []testCookie) *httptest.Server {
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("/set", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		for _, cookie := range wantCookies {
+			http.SetCookie(w, &http.Cookie{
+				Name:   cookie.name,
+				Value:  cookie.value,
+				MaxAge: cookie.maxAge,
+			})
+		}
+
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	mux.HandleFunc("/get", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		require.Len(t, r.Cookies(), len(wantCookies))
+
+		for k, v := range r.Cookies() {
+			assert.Equal(t, wantCookies[k].name, v.Name)
+			assert.Equal(t, wantCookies[k].value, v.Value)
+		}
+
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	return httptest.NewServer(mux)
+}
+
+type testGetterSetter map[string]string
+
+func (p testGetterSetter) Set(key, value string) {
+	p[key] = value
+}
+
+func (p testGetterSetter) Get(key string) string {
+	return p[key]
+}

internal/cookies/pantry.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cookies
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/ProtonMail/proton-bridge/internal/preferences"
+)
+
+// pantry persists and loads cookies to some persistent storage location.
+type pantry struct {
+	gs GetterSetter
+}
+
+func (p *pantry) persistCookies(host string, cookies []*http.Cookie) error {
+	for _, cookie := range cookies {
+		if cookie.MaxAge > 0 {
+			cookie.Expires = time.Now().Add(time.Duration(cookie.MaxAge) * time.Second)
+		}
+	}
+
+	cookiesByHost, err := p.loadFromJSON()
+	if err != nil {
+		return err
+	}
+
+	cookiesByHost[host] = cookies
+
+	return p.saveToJSON(cookiesByHost)
+}
+
+func (p *pantry) discardExpiredCookies() error {
+	cookiesByHost, err := p.loadFromJSON()
+	if err != nil {
+		return err
+	}
+
+	for host, cookies := range cookiesByHost {
+		cookiesByHost[host] = discardExpiredCookies(cookies)
+	}
+
+	return p.saveToJSON(cookiesByHost)
+}
+
+type cookiesByHost map[string][]*http.Cookie
+
+func (p *pantry) loadFromJSON() (cookiesByHost, error) {
+	b := p.gs.Get(preferences.CookiesKey)
+
+	if b == "" {
+		return make(cookiesByHost), nil
+	}
+
+	var cookies cookiesByHost
+
+	if err := json.Unmarshal([]byte(b), &cookies); err != nil {
+		return nil, err
+	}
+
+	return cookies, nil
+}
+
+func (p *pantry) saveToJSON(cookies cookiesByHost) error {
+	b, err := json.Marshal(cookies)
+	if err != nil {
+		return err
+	}
+
+	p.gs.Set(preferences.CookiesKey, string(b))
+
+	return nil
+}
+
+func discardExpiredCookies(cookies []*http.Cookie) (validCookies []*http.Cookie) {
+	for _, cookie := range cookies {
+		if cookie.Expires.After(time.Now()) {
+			validCookies = append(validCookies, cookie)
+		}
+	}
+
+	return
+}

internal/events/events.go

@@ -40,6 +40,7 @@ const (
 	NoActiveKeyForRecipientEvent = "noActiveKeyForRecipient"
 	UpgradeApplicationEvent      = "upgradeApplication"
 	TLSCertIssue                 = "tlsCertPinningIssue"
+	IMAPTLSBadCert               = "imapTLSBadCert"
 
 	// LogoutEventTimeout is the minimum time to permit between logout events being sent.
 	LogoutEventTimeout = 3 * time.Minute

internal/frontend/autoconfig/applemail.go

@@ -43,7 +43,7 @@ func (c *appleMail) Name() string {
 	return "Apple Mail"
 }
 
-func (c *appleMail) Configure(imapPort, smtpPort int, imapSSL, smtpSSL bool, user types.BridgeUser, addressIndex int) error { //nolint[funlen]
+func (c *appleMail) Configure(imapPort, smtpPort int, imapSSL, smtpSSL bool, user types.User, addressIndex int) error { //nolint[funlen]
 	var addresses string
 	var displayName string
 

internal/frontend/autoconfig/autoconfig.go

@@ -23,7 +23,7 @@ import "github.com/ProtonMail/proton-bridge/internal/frontend/types"
 
 type AutoConfig interface {
 	Name() string
-	Configure(imapPort int, smtpPort int, imapSSl, smtpSSL bool, user types.BridgeUser, addressIndex int) error
+	Configure(imapPort int, smtpPort int, imapSSl, smtpSSL bool, user types.User, addressIndex int) error
 }
 
 var available []AutoConfig //nolint[gochecknoglobals]

internal/frontend/cli-ie/account_utils.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/abiosoft/ishell"
+)
+
+// completeUsernames is a helper to complete usernames as the user types.
+func (f *frontendCLI) completeUsernames(args []string) (usernames []string) {
+	if len(args) > 1 {
+		return
+	}
+	arg := ""
+	if len(args) == 1 {
+		arg = args[0]
+	}
+	for _, user := range f.ie.GetUsers() {
+		if strings.HasPrefix(strings.ToLower(user.Username()), strings.ToLower(arg)) {
+			usernames = append(usernames, user.Username())
+		}
+	}
+	return
+}
+
+// noAccountWrapper is a decorator for functions which need any account to be properly functional.
+func (f *frontendCLI) noAccountWrapper(callback func(*ishell.Context)) func(*ishell.Context) {
+	return func(c *ishell.Context) {
+		users := f.ie.GetUsers()
+		if len(users) == 0 {
+			f.Println("No active accounts. Please add account to continue.")
+		} else {
+			callback(c)
+		}
+	}
+}
+
+func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.User {
+	user := f.getUserByIndexOrName("")
+	if user != nil {
+		return user
+	}
+
+	numberOfAccounts := len(f.ie.GetUsers())
+	indexRange := fmt.Sprintf("number between 0 and %d", numberOfAccounts-1)
+	if len(c.Args) == 0 {
+		f.Printf("Please choose %s or username.\n", indexRange)
+		return nil
+	}
+	arg := c.Args[0]
+	user = f.getUserByIndexOrName(arg)
+	if user == nil {
+		f.Printf("Wrong input '%s'. Choose %s or username.\n", bold(arg), indexRange)
+		return nil
+	}
+	return user
+}
+
+func (f *frontendCLI) getUserByIndexOrName(arg string) types.User {
+	users := f.ie.GetUsers()
+	numberOfAccounts := len(users)
+	if numberOfAccounts == 0 {
+		return nil
+	}
+	if numberOfAccounts == 1 {
+		return users[0]
+	}
+	if index, err := strconv.Atoi(arg); err == nil {
+		if index < 0 || index >= numberOfAccounts {
+			return nil
+		}
+		return users[index]
+	}
+	for _, user := range users {
+		if user.Username() == arg {
+			return user
+		}
+	}
+	return nil
+}

internal/frontend/cli-ie/accounts.go

@@ -0,0 +1,153 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) listAccounts(c *ishell.Context) {
+	spacing := "%-2d: %-20s (%-15s, %-15s)\n"
+	f.Printf(bold(strings.Replace(spacing, "d", "s", -1)), "#", "account", "status", "address mode")
+	for idx, user := range f.ie.GetUsers() {
+		connected := "disconnected"
+		if user.IsConnected() {
+			connected = "connected"
+		}
+		mode := "split"
+		if user.IsCombinedAddressMode() {
+			mode = "combined"
+		}
+		f.Printf(spacing, idx, user.Username(), connected, mode)
+	}
+	f.Println()
+}
+
+func (f *frontendCLI) loginAccount(c *ishell.Context) { // nolint[funlen]
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	loginName := ""
+	if len(c.Args) > 0 {
+		user := f.getUserByIndexOrName(c.Args[0])
+		if user != nil {
+			loginName = user.GetPrimaryAddress()
+		}
+	}
+
+	if loginName == "" {
+		loginName = f.readStringInAttempts("Username", c.ReadLine, isNotEmpty)
+		if loginName == "" {
+			return
+		}
+	} else {
+		f.Println("Username:", loginName)
+	}
+
+	password := f.readStringInAttempts("Password", c.ReadPassword, isNotEmpty)
+	if password == "" {
+		return
+	}
+
+	f.Println("Authenticating ... ")
+	client, auth, err := f.ie.Login(loginName, password)
+	if err != nil {
+		f.processAPIError(err)
+		return
+	}
+
+	if auth.HasTwoFactor() {
+		twoFactor := f.readStringInAttempts("Two factor code", c.ReadLine, isNotEmpty)
+		if twoFactor == "" {
+			return
+		}
+
+		err = client.Auth2FA(twoFactor, auth)
+		if err != nil {
+			f.processAPIError(err)
+			return
+		}
+	}
+
+	mailboxPassword := password
+	if auth.HasMailboxPassword() {
+		mailboxPassword = f.readStringInAttempts("Mailbox password", c.ReadPassword, isNotEmpty)
+	}
+	if mailboxPassword == "" {
+		return
+	}
+
+	f.Println("Adding account ...")
+	user, err := f.ie.FinishLogin(client, auth, mailboxPassword)
+	if err != nil {
+		log.WithField("username", loginName).WithError(err).Error("Login was unsuccessful")
+		f.Println("Adding account was unsuccessful:", err)
+		return
+	}
+
+	f.Printf("Account %s was added successfully.\n", bold(user.Username()))
+}
+
+func (f *frontendCLI) logoutAccount(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+	if f.yesNoQuestion("Are you sure you want to logout account " + bold(user.Username())) {
+		if err := user.Logout(); err != nil {
+			f.printAndLogError("Logging out failed: ", err)
+		}
+	}
+}
+
+func (f *frontendCLI) deleteAccount(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+	if f.yesNoQuestion("Are you sure you want to " + bold("remove account "+user.Username())) {
+		clearCache := f.yesNoQuestion("Do you want to remove cache for this account")
+		if err := f.ie.DeleteUser(user.ID(), clearCache); err != nil {
+			f.printAndLogError("Cannot delete account: ", err)
+			return
+		}
+	}
+}
+
+func (f *frontendCLI) deleteAccounts(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	if !f.yesNoQuestion("Do you really want remove all accounts") {
+		return
+	}
+	for _, user := range f.ie.GetUsers() {
+		if err := f.ie.DeleteUser(user.ID(), false); err != nil {
+			f.printAndLogError("Cannot delete account ", user.Username(), ": ", err)
+		}
+	}
+	c.Println("Keychain cleared")
+}

internal/frontend/cli-ie/frontend.go

@@ -0,0 +1,237 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Package cliie provides CLI interface of the Import-Export app.
+package cliie
+
+import (
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+
+	"github.com/abiosoft/ishell"
+	"github.com/sirupsen/logrus"
+)
+
+var (
+	log = logrus.WithField("pkg", "frontend/cli-ie") //nolint[gochecknoglobals]
+)
+
+type frontendCLI struct {
+	*ishell.Shell
+
+	config        *config.Config
+	eventListener listener.Listener
+	updates       types.Updater
+	ie            types.ImportExporter
+
+	appRestart bool
+}
+
+// New returns a new CLI frontend configured with the given options.
+func New( //nolint[funlen]
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) *frontendCLI { //nolint[golint]
+	fe := &frontendCLI{
+		Shell: ishell.New(),
+
+		config:        config,
+		eventListener: eventListener,
+		updates:       updates,
+		ie:            ie,
+
+		appRestart: false,
+	}
+
+	// Clear commands.
+	clearCmd := &ishell.Cmd{Name: "clear",
+		Help:    "remove stored accounts and preferences. (alias: cl)",
+		Aliases: []string{"cl"},
+	}
+	clearCmd.AddCmd(&ishell.Cmd{Name: "accounts",
+		Help:    "remove all accounts from keychain. (aliases: a, k, keychain)",
+		Aliases: []string{"a", "k", "keychain"},
+		Func:    fe.deleteAccounts,
+	})
+	fe.AddCmd(clearCmd)
+
+	// Check commands.
+	checkCmd := &ishell.Cmd{Name: "check", Help: "check internet connection or new version."}
+	checkCmd.AddCmd(&ishell.Cmd{Name: "updates",
+		Help:    "check for Import-Export updates. (aliases: u, v, version)",
+		Aliases: []string{"u", "version", "v"},
+		Func:    fe.checkUpdates,
+	})
+	checkCmd.AddCmd(&ishell.Cmd{Name: "internet",
+		Help:    "check internet connection. (aliases: i, conn, connection)",
+		Aliases: []string{"i", "con", "connection"},
+		Func:    fe.checkInternetConnection,
+	})
+	fe.AddCmd(checkCmd)
+
+	// Print info commands.
+	fe.AddCmd(&ishell.Cmd{Name: "log-dir",
+		Help:    "print path to directory with logs. (aliases: log, logs)",
+		Aliases: []string{"log", "logs"},
+		Func:    fe.printLogDir,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "manual",
+		Help:    "print URL with instructions. (alias: man)",
+		Aliases: []string{"man"},
+		Func:    fe.printManual,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "release-notes",
+		Help:    "print release notes. (aliases: notes, fixed-bugs, bugs, ver, version)",
+		Aliases: []string{"notes", "fixed-bugs", "bugs", "ver", "version"},
+		Func:    fe.printLocalReleaseNotes,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "credits",
+		Help: "print used resources.",
+		Func: fe.printCredits,
+	})
+
+	// Account commands.
+	fe.AddCmd(&ishell.Cmd{Name: "list",
+		Help:    "print the list of accounts. (aliases: l, ls)",
+		Func:    fe.noAccountWrapper(fe.listAccounts),
+		Aliases: []string{"l", "ls"},
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "login",
+		Help:      "login procedure to add or connect account. Optionally use index or account as parameter. (aliases: a, add, con, connect)",
+		Func:      fe.loginAccount,
+		Aliases:   []string{"add", "a", "con", "connect"},
+		Completer: fe.completeUsernames,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "logout",
+		Help:      "disconnect the account. Use index or account name as parameter. (aliases: d, disconnect)",
+		Func:      fe.noAccountWrapper(fe.logoutAccount),
+		Aliases:   []string{"d", "disconnect"},
+		Completer: fe.completeUsernames,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "delete",
+		Help:      "remove the account from keychain. Use index or account name as parameter. (aliases: del, rm, remove)",
+		Func:      fe.noAccountWrapper(fe.deleteAccount),
+		Aliases:   []string{"del", "rm", "remove"},
+		Completer: fe.completeUsernames,
+	})
+
+	// Import-Export commands.
+	importCmd := &ishell.Cmd{Name: "import",
+		Help:    "import messages. (alias: imp)",
+		Aliases: []string{"imp"},
+	}
+	importCmd.AddCmd(&ishell.Cmd{Name: "local",
+		Help:    "import local messages. (aliases: loc)",
+		Func:    fe.noAccountWrapper(fe.importLocalMessages),
+		Aliases: []string{"loc"},
+	})
+	importCmd.AddCmd(&ishell.Cmd{Name: "remote",
+		Help:    "import remote messages. (aliases: rem)",
+		Func:    fe.noAccountWrapper(fe.importRemoteMessages),
+		Aliases: []string{"rem"},
+	})
+	fe.AddCmd(importCmd)
+
+	exportCmd := &ishell.Cmd{Name: "export",
+		Help:    "export messages. (alias: exp)",
+		Aliases: []string{"exp"},
+	}
+	exportCmd.AddCmd(&ishell.Cmd{Name: "eml",
+		Help: "export messages to eml files.",
+		Func: fe.noAccountWrapper(fe.exportMessagesToEML),
+	})
+	exportCmd.AddCmd(&ishell.Cmd{Name: "mbox",
+		Help: "export messages to mbox files.",
+		Func: fe.noAccountWrapper(fe.exportMessagesToMBOX),
+	})
+	fe.AddCmd(exportCmd)
+
+	// System commands.
+	fe.AddCmd(&ishell.Cmd{Name: "restart",
+		Help: "restart the Import-Export app.",
+		Func: fe.restart,
+	})
+
+	go func() {
+		defer panicHandler.HandlePanic()
+		fe.watchEvents()
+	}()
+	fe.eventListener.RetryEmit(events.TLSCertIssue)
+	fe.eventListener.RetryEmit(events.ErrorEvent)
+	return fe
+}
+
+func (f *frontendCLI) watchEvents() {
+	errorCh := f.getEventChannel(events.ErrorEvent)
+	internetOffCh := f.getEventChannel(events.InternetOffEvent)
+	internetOnCh := f.getEventChannel(events.InternetOnEvent)
+	addressChangedLogoutCh := f.getEventChannel(events.AddressChangedLogoutEvent)
+	logoutCh := f.getEventChannel(events.LogoutEvent)
+	certIssue := f.getEventChannel(events.TLSCertIssue)
+	for {
+		select {
+		case errorDetails := <-errorCh:
+			f.Println("Import-Export failed:", errorDetails)
+		case <-internetOffCh:
+			f.notifyInternetOff()
+		case <-internetOnCh:
+			f.notifyInternetOn()
+		case address := <-addressChangedLogoutCh:
+			f.notifyLogout(address)
+		case userID := <-logoutCh:
+			user, err := f.ie.GetUser(userID)
+			if err != nil {
+				return
+			}
+			f.notifyLogout(user.Username())
+		case <-certIssue:
+			f.notifyCertIssue()
+		}
+	}
+}
+
+func (f *frontendCLI) getEventChannel(event string) <-chan string {
+	ch := make(chan string)
+	f.eventListener.Add(event, ch)
+	return ch
+}
+
+// IsAppRestarting returns whether the app is currently set to restart.
+func (f *frontendCLI) IsAppRestarting() bool {
+	return f.appRestart
+}
+
+// Loop starts the frontend loop with an interactive shell.
+func (f *frontendCLI) Loop(credentialsError error) error {
+	if credentialsError != nil {
+		f.notifyCredentialsError()
+		return credentialsError
+	}
+
+	f.Print(`
+Welcome to ProtonMail Import-Export app interactive shell
+
+WARNING: The CLI is an experimental feature and does not yet cover all functionality.
+	`)
+	f.Run()
+	return nil
+}

internal/frontend/cli-ie/importexport.go

@@ -0,0 +1,224 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) importLocalMessages(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, false)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetLocalImporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, false, true)
+}
+
+func (f *frontendCLI) importRemoteMessages(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+
+	username := f.readStringInAttempts("IMAP username", c.ReadLine, isNotEmpty)
+	if username == "" {
+		return
+	}
+	password := f.readStringInAttempts("IMAP password", c.ReadPassword, isNotEmpty)
+	if password == "" {
+		return
+	}
+	host := f.readStringInAttempts("IMAP host", c.ReadLine, isNotEmpty)
+	if host == "" {
+		return
+	}
+	port := f.readStringInAttempts("IMAP port", c.ReadLine, isNotEmpty)
+	if port == "" {
+		return
+	}
+
+	t, err := f.ie.GetRemoteImporter(user.GetPrimaryAddress(), username, password, host, port)
+	f.transfer(t, err, false, true)
+}
+
+func (f *frontendCLI) exportMessagesToEML(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, true)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetEMLExporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, true, false)
+}
+
+func (f *frontendCLI) exportMessagesToMBOX(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, true)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetMBOXExporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, true, false)
+}
+
+func (f *frontendCLI) getUserAndPath(c *ishell.Context, createPath bool) (types.User, string) {
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return nil, ""
+	}
+
+	path := f.readStringInAttempts("Path of EML and MBOX files", c.ReadLine, isNotEmpty)
+	if path == "" {
+		return nil, ""
+	}
+
+	if createPath {
+		_ = os.Mkdir(path, os.ModePerm)
+	}
+
+	return user, path
+}
+
+func (f *frontendCLI) transfer(t *transfer.Transfer, err error, askSkipEncrypted bool, askGlobalMailbox bool) {
+	if err != nil {
+		f.printAndLogError("Failed to init transferrer: ", err)
+		return
+	}
+
+	if askSkipEncrypted {
+		skipEncryptedMessages := f.yesNoQuestion("Skip encrypted messages")
+		t.SetSkipEncryptedMessages(skipEncryptedMessages)
+	}
+
+	if !f.setTransferRules(t) {
+		return
+	}
+
+	if askGlobalMailbox {
+		if err := f.setTransferGlobalMailbox(t); err != nil {
+			f.printAndLogError("Failed to create global mailbox: ", err)
+			return
+		}
+	}
+
+	progress := t.Start()
+	for range progress.GetUpdateChannel() {
+		f.printTransferProgress(progress)
+	}
+	f.printTransferResult(progress)
+}
+
+func (f *frontendCLI) setTransferGlobalMailbox(t *transfer.Transfer) error {
+	labelName := fmt.Sprintf("Imported %s", time.Now().Format("Jan-02-2006 15:04"))
+
+	useGlobalLabel := f.yesNoQuestion("Use global label " + labelName)
+	if !useGlobalLabel {
+		return nil
+	}
+
+	globalMailbox, err := t.CreateTargetMailbox(transfer.Mailbox{
+		Name:        labelName,
+		Color:       pmapi.LabelColors[0],
+		IsExclusive: false,
+	})
+	if err != nil {
+		return err
+	}
+
+	t.SetGlobalMailbox(&globalMailbox)
+	return nil
+}
+
+func (f *frontendCLI) setTransferRules(t *transfer.Transfer) bool {
+	f.Println("Rules:")
+	for _, rule := range t.GetRules() {
+		if !rule.Active {
+			continue
+		}
+		targets := strings.Join(rule.TargetMailboxNames(), ", ")
+		if rule.HasTimeLimit() {
+			f.Printf(" %-30s → %s (%s - %s)\n", rule.SourceMailbox.Name, targets, rule.FromDate(), rule.ToDate())
+		} else {
+			f.Printf(" %-30s → %s\n", rule.SourceMailbox.Name, targets)
+		}
+	}
+
+	return f.yesNoQuestion("Proceed")
+}
+
+func (f *frontendCLI) printTransferProgress(progress *transfer.Progress) {
+	failed, imported, exported, added, total := progress.GetCounts()
+	if total != 0 {
+		f.Println(fmt.Sprintf("Progress update: %d (%d / %d) / %d, failed: %d", imported, exported, added, total, failed))
+	}
+
+	if progress.IsPaused() {
+		f.Printf("Transfer is paused bacause %s", progress.PauseReason())
+		if !f.yesNoQuestion("Continue (y) or stop (n)") {
+			progress.Stop()
+		}
+	}
+}
+
+func (f *frontendCLI) printTransferResult(progress *transfer.Progress) {
+	err := progress.GetFatalError()
+	if err != nil {
+		f.Println("Transfer failed: " + err.Error())
+		return
+	}
+
+	statuses := progress.GetFailedMessages()
+	if len(statuses) == 0 {
+		f.Println("Transfer finished!")
+		return
+	}
+
+	f.Println("Transfer finished with errors:")
+	for _, messageStatus := range statuses {
+		f.Printf(
+			" %-17s | %-30s | %-30s\n  %s: %s\n",
+			messageStatus.Time.Format("Jan 02 2006 15:04"),
+			messageStatus.From,
+			messageStatus.Subject,
+			messageStatus.SourceID,
+			messageStatus.GetErrorMessage(),
+		)
+	}
+}

internal/frontend/cli-ie/system.go

@@ -0,0 +1,46 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) restart(c *ishell.Context) {
+	if f.yesNoQuestion("Are you sure you want to restart the Import-Export app") {
+		f.Println("Restarting the Import-Export app...")
+		f.appRestart = true
+		f.Stop()
+	}
+}
+
+func (f *frontendCLI) checkInternetConnection(c *ishell.Context) {
+	if f.ie.CheckConnection() == nil {
+		f.Println("Internet connection is available.")
+	} else {
+		f.Println("Can not contact the server, please check your internet connection.")
+	}
+}
+
+func (f *frontendCLI) printLogDir(c *ishell.Context) {
+	f.Println("Log files are stored in\n\n ", f.config.GetLogDir())
+}
+
+func (f *frontendCLI) printManual(c *ishell.Context) {
+	f.Println("More instructions about the Import-Export app can be found at\n\n  https://protonmail.com/support/categories/import-export/")
+}

internal/frontend/cli-ie/updates.go

@@ -0,0 +1,65 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) checkUpdates(c *ishell.Context) {
+	isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
+	if err != nil {
+		f.printAndLogError("Cannot retrieve version info: ", err)
+		f.checkInternetConnection(c)
+		return
+	}
+	if isUpToDate {
+		f.Println("Your version is up to date.")
+	} else {
+		f.notifyNeedUpgrade()
+		f.Println("")
+		f.printReleaseNotes(latestVersionInfo)
+	}
+}
+
+func (f *frontendCLI) printLocalReleaseNotes(c *ishell.Context) {
+	localVersion := f.updates.GetLocalVersion()
+	f.printReleaseNotes(localVersion)
+}
+
+func (f *frontendCLI) printReleaseNotes(versionInfo updates.VersionInfo) {
+	f.Println(bold("ProtonMail Import-Export app "+versionInfo.Version), "\n")
+	if versionInfo.ReleaseNotes != "" {
+		f.Println(bold("Release Notes"))
+		f.Println(versionInfo.ReleaseNotes)
+	}
+	if versionInfo.ReleaseFixedBugs != "" {
+		f.Println(bold("Fixed bugs"))
+		f.Println(versionInfo.ReleaseFixedBugs)
+	}
+}
+
+func (f *frontendCLI) printCredits(c *ishell.Context) {
+	for _, pkg := range strings.Split(importexport.Credits, ";") {
+		f.Println(pkg)
+	}
+}

internal/frontend/cli-ie/utils.go

@@ -0,0 +1,123 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	pmapi "github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/fatih/color"
+)
+
+const (
+	maxInputRepeat = 2
+)
+
+var (
+	bold = color.New(color.Bold).SprintFunc() //nolint[gochecknoglobals]
+)
+
+func isNotEmpty(val string) bool {
+	return val != ""
+}
+
+func (f *frontendCLI) yesNoQuestion(question string) bool {
+	f.Print(question, "? yes/"+bold("no")+": ")
+	yes := "yes"
+	answer := strings.ToLower(f.ReadLine())
+	for i := 0; i < len(answer); i++ {
+		if i >= len(yes) || answer[i] != yes[i] {
+			return false // Everything else is false.
+		}
+	}
+	return len(answer) > 0 // Empty is false.
+}
+
+func (f *frontendCLI) readStringInAttempts(title string, readFunc func() string, isOK func(string) bool) (value string) {
+	f.Printf("%s: ", title)
+	value = readFunc()
+	title = strings.ToLower(string(title[0])) + title[1:]
+	for i := 0; !isOK(value); i++ {
+		if i >= maxInputRepeat {
+			f.Println("Too many attempts")
+			return ""
+		}
+		f.Printf("Please fill %s: ", title)
+		value = readFunc()
+	}
+	return
+}
+
+func (f *frontendCLI) printAndLogError(args ...interface{}) {
+	log.Error(args...)
+	f.Println(args...)
+}
+
+func (f *frontendCLI) processAPIError(err error) {
+	log.Warn("API error: ", err)
+	switch err {
+	case pmapi.ErrAPINotReachable:
+		f.notifyInternetOff()
+	case pmapi.ErrUpgradeApplication:
+		f.notifyNeedUpgrade()
+	default:
+		f.Println("Server error:", err.Error())
+	}
+}
+
+func (f *frontendCLI) notifyInternetOff() {
+	f.Println("Internet connection is not available.")
+}
+
+func (f *frontendCLI) notifyInternetOn() {
+	f.Println("Internet connection is available again.")
+}
+
+func (f *frontendCLI) notifyLogout(address string) {
+	f.Printf("Account %s is disconnected. Login to continue using this account with email client.", address)
+}
+
+func (f *frontendCLI) notifyNeedUpgrade() {
+	f.Println("Please download and install the newest version of application from", f.updates.GetDownloadLink())
+}
+
+func (f *frontendCLI) notifyCredentialsError() {
+	// Print in 80-column width.
+	f.Println("ProtonMail Import-Export app is not able to detect a supported password manager")
+	f.Println("(pass, gnome-keyring). Please install and set up a supported password manager")
+	f.Println("and restart the application.")
+}
+
+func (f *frontendCLI) notifyCertIssue() {
+	// Print in 80-column width.
+	f.Println(`Connection security error: Your network connection to Proton services may
+be insecure.
+
+Description:
+ProtonMail Import-Export was not able to establish a secure connection to Proton
+servers due to a TLS certificate error. This means your connection may
+potentially be insecure and susceptible to monitoring by third parties.
+
+Recommendation:
+* If you trust your network operator, you can continue to use ProtonMail
+  as usual.
+* If you don't trust your network operator, reconnect to ProtonMail over a VPN
+  (such as ProtonVPN) which encrypts your Internet connection, or use
+  a different network to access ProtonMail.
+`)
+}

internal/frontend/cli/account_utils.go

@@ -55,7 +55,7 @@ func (f *frontendCLI) noAccountWrapper(callback func(*ishell.Context)) func(*ish
 	}
 }
 
-func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.BridgeUser {
+func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.User {
 	user := f.getUserByIndexOrName("")
 	if user != nil {
 		return user
@@ -76,7 +76,7 @@ func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.BridgeUser {
 	return user
 }
 
-func (f *frontendCLI) getUserByIndexOrName(arg string) types.BridgeUser {
+func (f *frontendCLI) getUserByIndexOrName(arg string) types.User {
 	users := f.bridge.GetUsers()
 	numberOfAccounts := len(users)
 	if numberOfAccounts == 0 {

internal/frontend/cli/accounts.go

@@ -63,7 +63,7 @@ func (f *frontendCLI) showAccountInfo(c *ishell.Context) {
 	}
 }
 
-func (f *frontendCLI) showAccountAddressInfo(user types.BridgeUser, address string) {
+func (f *frontendCLI) showAccountAddressInfo(user types.User, address string) {
 	smtpSecurity := "STARTTLS"
 	if f.preferences.GetBool(preferences.SMTPSSLKey) {
 		smtpSecurity = "SSL"
@@ -126,7 +126,7 @@ func (f *frontendCLI) loginAccount(c *ishell.Context) { // nolint[funlen]
 			return
 		}
 
-		_, err = client.Auth2FA(twoFactor, auth)
+		err = client.Auth2FA(twoFactor, auth)
 		if err != nil {
 			f.processAPIError(err)
 			return

internal/frontend/cli/frontend.go

@@ -21,7 +21,6 @@ package cli
 import (
 	"github.com/ProtonMail/proton-bridge/internal/events"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
-	"github.com/ProtonMail/proton-bridge/internal/preferences"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 
@@ -77,7 +76,7 @@ func New( //nolint[funlen]
 		Func:    fe.deleteCache,
 	})
 	clearCmd.AddCmd(&ishell.Cmd{Name: "accounts",
-		Help:    "remove all accounts from keychain. (aliases: k, keychain)",
+		Help:    "remove all accounts from keychain. (aliases: a, k, keychain)",
 		Aliases: []string{"a", "k", "keychain"},
 		Func:    fe.deleteAccounts,
 	})
@@ -241,8 +240,6 @@ func (f *frontendCLI) Loop(credentialsError error) error {
 		return credentialsError
 	}
 
-	f.preferences.SetBool(preferences.FirstStartKey, false)
-
 	f.Print(`
             Welcome to ProtonMail Bridge interactive shell
                               ___....___

internal/frontend/cli/system.go

@@ -43,7 +43,7 @@ func (f *frontendCLI) checkInternetConnection(c *ishell.Context) {
 	if f.bridge.CheckConnection() == nil {
 		f.Println("Internet connection is available.")
 	} else {
-		f.Println("Can not contact server please check you internet connection.")
+		f.Println("Can not contact the server, please check your internet connection.")
 	}
 }
 

internal/frontend/cli/updates.go

@@ -21,12 +21,12 @@ import (
 	"strings"
 
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/abiosoft/ishell"
 )
 
 func (f *frontendCLI) checkUpdates(c *ishell.Context) {
-	isUpToDate, latestVersionInfo, err := f.updates.CheckIsBridgeUpToDate()
+	isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
 	if err != nil {
 		f.printAndLogError("Cannot retrieve version info: ", err)
 		f.checkInternetConnection(c)

internal/frontend/frontend.go

@@ -22,8 +22,11 @@ import (
 	"github.com/0xAX/notificator"
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/cli"
+	cliie "github.com/ProtonMail/proton-bridge/internal/frontend/cli-ie"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/qt"
+	qtie "github.com/ProtonMail/proton-bridge/internal/frontend/qt-ie"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	"github.com/sirupsen/logrus"
@@ -40,12 +43,12 @@ type Frontend interface {
 }
 
 // HandlePanic handles panics which occur for users with GUI.
-func HandlePanic() {
+func HandlePanic(appName string) {
 	notify := notificator.New(notificator.Options{
 		DefaultIcon: "../frontend/ui/icon/icon.png",
-		AppName:     "ProtonMail Bridge",
+		AppName:     appName,
 	})
-	_ = notify.Push("Fatal Error", "The ProtonMail Bridge has encountered a fatal error. ", "/frontend/icon/icon.png", notificator.UR_CRITICAL)
+	_ = notify.Push("Fatal Error", "The "+appName+" has encountered a fatal error. ", "/frontend/icon/icon.png", notificator.UR_CRITICAL)
 }
 
 // New returns initialized frontend based on `frontendType`, which can be `cli` or `qt`.
@@ -86,3 +89,36 @@ func new(
 		return qt.New(version, buildVersion, showWindowOnStart, panicHandler, config, preferences, eventListener, updates, bridge, noEncConfirmator)
 	}
 }
+
+// NewImportExport returns initialized frontend based on `frontendType`, which can be `cli` or `qt`.
+func NewImportExport(
+	version,
+	buildVersion,
+	frontendType string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie *importexport.ImportExport,
+) Frontend {
+	ieWrap := types.NewImportExportWrap(ie)
+	return newImportExport(version, buildVersion, frontendType, panicHandler, config, eventListener, updates, ieWrap)
+}
+
+func newImportExport(
+	version,
+	buildVersion,
+	frontendType string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) Frontend {
+	switch frontendType {
+	case "cli":
+		return cliie.New(panicHandler, config, eventListener, updates, ie)
+	default:
+		return qtie.New(version, buildVersion, panicHandler, config, eventListener, updates, ie)
+	}
+}

internal/frontend/qml/BridgeUI/MainWindow.qml

@@ -354,7 +354,7 @@ Window {
                 } else {
                     return qsTr('A new version of Bridge is available.<br>
                     Check <a href="%1">release notes</a> to learn what is new in %2.<br>
-                    You can continue with the update or download and install new version manually from<br><br>
+                    You can continue with the update or download and install the new version manually from<br><br>
                     <a href="%3">%3</a>',
                     "Message for update in Win/Mac").arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
                 }

internal/frontend/qml/BridgeUI/OutgoingNoEncPopup.qml

@@ -84,7 +84,7 @@ Window {
             anchors.horizontalCenter: parent.horizontalCenter
 
             ButtonRounded {
-                id: cancel
+                id: sendAnyway
                 onClicked : root.hide(true)
                 height: Style.main.fontSize*2
                 //width: Style.dialog.widthButton*1.3
@@ -93,7 +93,7 @@ Window {
             }
 
             ButtonRounded {
-                id: sendAnyway
+                id: cancel
                 onClicked : root.hide(false)
                 height: Style.main.fontSize*2
                 //width: Style.dialog.widthButton*1.3

internal/frontend/qml/Gui.qml

@@ -237,6 +237,14 @@ Item {
             winMain.tlsBarState="notOK"
         }
 
+        onShowIMAPCertTroubleshoot : {
+            go.notifyBubble(1, qsTr(
+                "Bridge was unable to establish a connection with your Email client. <br> <a href=\"https://protonmail.com/support/knowledge-base/bridge-ssl-connection-issue\">Learn more</a> <br>",
+                "notification message"
+            ))
+        }
+
+
     }
 
     Timer {

internal/frontend/qml/GuiIE.qml

@@ -0,0 +1,418 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is main qml file
+
+import QtQuick 2.8
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+// All imports from dynamic must be loaded before
+import QtQuick.Window 2.2
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+Item {
+    id: gui
+    property alias winMain: winMain
+    property bool isFirstWindow: true
+    property int warningFlags: 0
+
+    property var locale    : Qt.locale("en_US")
+    property date netBday  : new Date("1989-03-13T00:00:00")
+    property var allYears  : getYearList(1970,(new Date()).getFullYear())
+    property var allMonths : getMonthList(1,12)
+    property var allDays   : getDayList(1,31)
+
+    property var enums : JSON.parse('{"pathOK":1,"pathEmptyPath":2,"pathWrongPath":4,"pathNotADir":8,"pathWrongPermissions":16,"pathDirEmpty":32,"errUnknownError":0,"errEventAPILogout":1,"errUpdateAPI":2,"errUpdateJSON":3,"errUserAuth":4,"errQApplication":18,"errEmailExportFailed":6,"errEmailExportMissing":7,"errNothingToImport":8,"errEmailImportFailed":12,"errDraftImportFailed":13,"errDraftLabelFailed":14,"errEncryptMessageAttachment":15,"errEncryptMessage":16,"errNoInternetWhileImport":17,"errUnlockUser":5,"errSourceMessageNotSelected":19,"errCannotParseMail":5000,"errWrongLoginOrPassword":5001,"errWrongServerPathOrPort":5002,"errWrongAuthMethod":5003,"errIMAPFetchFailed":5004,"errLocalSourceLoadFailed":1000,"errPMLoadFailed":1001,"errRemoteSourceLoadFailed":1002,"errLoadAccountList":1005,"errExit":1006,"errRetry":1007,"errAsk":1008,"errImportFailed":1009,"errCreateLabelFailed":1010,"errCreateFolderFailed":1011,"errUpdateLabelFailed":1012,"errUpdateFolderFailed":1013,"errFillFolderName":1014,"errSelectFolderColor":1015,"errNoInternet":1016,"folderTypeSystem":"system","folderTypeLabel":"label","folderTypeFolder":"folder","folderTypeExternal":"external","progressInit":"init","progressLooping":"looping","statusNoInternet":"noInternet","statusCheckingInternet":"internetCheck","statusNewVersionAvailable":"oldVersion","statusUpToDate":"upToDate","statusForceUpdate":"forceupdate"}')
+
+    IEStyle{}
+
+    MainWindow {
+        id: winMain
+
+        visible : true
+        Component.onCompleted: {
+            winMain.showAndRise()
+        }
+    }
+
+    BugReportWindow {
+        id:bugreportWin
+        clientVersion.visible: false
+        onPrefill : {
+            userAddress.text=""
+            if (accountsModel.count>0) {
+                var addressList = accountsModel.get(0).aliases.split(";")
+                if (addressList.length>0) {
+                    userAddress.text = addressList[0]
+                }
+            }
+        }
+    }
+
+    // Signals from Go
+    Connections {
+        target: go
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        onProcessFinished :  {
+            winMain.dialogAddUser.hide()
+            winMain.dialogGlobal.hide()
+        }
+        onOpenManual : Qt.openUrlExternally("https://protonmail.com/support/categories/import-export/")
+
+        onNotifyBubble : {
+            //go.highlightSystray()
+            winMain.bubleNote.text = message
+            winMain.bubleNote.place(tabIndex)
+            winMain.bubleNote.show()
+            winMain.showAndRise()
+        }
+        onBubbleClosed : {
+            if (winMain.updateState=="uptodate") {
+                //go.normalSystray()
+            }
+        }
+
+        onSetConnectionStatus: {
+            go.isConnectionOK = isAvailable
+            if (go.isConnectionOK) {
+                if( winMain.updateState==gui.enums.statusNoInternet) {
+                    go.setUpdateState(gui.enums.statusUpToDate)
+                }
+            } else {
+                go.setUpdateState(gui.enums.statusNoInternet)
+            }
+        }
+
+        onRunCheckVersion : {
+            go.setUpdateState(gui.enums.statusUpToDate)
+            winMain.dialogGlobal.state=gui.enums.statusCheckingInternet
+            winMain.dialogGlobal.show()
+            go.isNewVersionAvailable(showMessage)
+        }
+
+        onSetUpdateState : {
+            // once app is outdated prevent from state change
+            if (winMain.updateState != gui.enums.statusForceUpdate) {
+                winMain.updateState = updateState
+            }
+        }
+
+        onSetAddAccountWarning : winMain.dialogAddUser.setWarning(message, 0)
+
+        onNotifyVersionIsTheLatest : {
+            winMain.popupMessage.show(
+                qsTr("You have the latest version!", "todo")
+            )
+        }
+
+        onNotifyError : {
+            var sep = go.errorDescription.indexOf("\n") < 0 ? go.errorDescription.length : go.errorDescription.indexOf("\n")
+            var name = go.errorDescription.slice(0, sep)
+            var errorMessage = go.errorDescription.slice(sep)
+            switch (errCode) {
+                case gui.enums.errPMLoadFailed :
+                winMain.popupMessage.show ( qsTr ( "Loading ProtonMail folders and labels was not successful."  , "Error message" )  )
+                winMain.dialogExport.hide()
+                break
+                case gui.enums.errLocalSourceLoadFailed  :
+                winMain.popupMessage.show(qsTr(
+                    "Loading local folder structure was not successful. "+
+                    "Folder does not contain valid MBOX or EML file.",
+                    "Error message when can not find correct files in folder."
+                ))
+                winMain.dialogImport.hide()
+                break
+                case gui.enums.errRemoteSourceLoadFailed : 
+                winMain.popupMessage.show ( qsTr ( "Loading remote source structure was not successful."        , "Error message" )  )
+                winMain.dialogImport.hide()
+                break
+                case gui.enums.errWrongServerPathOrPort      :
+                winMain.popupMessage.show ( qsTr ( "Cannot contact server - incorrect server address and port." , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break
+                case gui.enums.errWrongLoginOrPassword   :
+                winMain.popupMessage.show ( qsTr ( "Cannot authenticate - Incorrect email or password."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break ;
+                case gui.enums.errWrongAuthMethod   :
+                winMain.popupMessage.show ( qsTr ( "Cannot authenticate - Please use secured authentication method."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break ;
+
+
+                case gui.enums.errFillFolderName: 
+                winMain.popupMessage.show(qsTr (
+                    "Please fill the name.",
+                    "Error message when user did not fill the name of folder or label"
+                ))
+                break
+                case gui.enums.errCreateLabelFailed: 
+                winMain.popupMessage.show(qsTr(
+                    "Cannot create label with name \"%1\"\n%2",
+                    "Error message when it is not possible to create new label, arg1 folder name, arg2 error reason"
+                ).arg(name).arg(errorMessage))
+                break
+                case gui.enums.errCreateFolderFailed: 
+                winMain.popupMessage.show(qsTr(
+                    "Cannot create folder with name \"%1\"\n%2",
+                    "Error message when it is not possible to create new folder, arg1 folder name, arg2 error reason"
+                ).arg(name).arg(errorMessage))
+                break
+
+                case gui.enums.errNothingToImport:
+                winMain.popupMessage.show ( qsTr ( "No emails left to import after date range applied. Please, change the date range to continue."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break
+
+                case gui.enums.errNoInternetWhileImport:
+                case gui.enums.errNoInternet:
+                go.setConnectionStatus(false)
+                winMain.popupMessage.show ( go.canNotReachAPI )
+                break
+
+                case gui.enums.errPMAPIMessageTooLarge:
+                case gui.enums.errIMAPFetchFailed:
+                case gui.enums.errEmailImportFailed :
+                case gui.enums.errDraftImportFailed :
+                case gui.enums.errDraftLabelFailed :
+                case gui.enums.errEncryptMessageAttachment:
+                case gui.enums.errEncryptMessage:
+                //winMain.dialogImport.ask_retry_skip_cancel(name, errorMessage)
+                console.log("Import error", errCode, go.errorDescription)
+                winMain.popupMessage.show(qsTr("Error during import: \n%1\n please see log files for more details.", "message of generic error").arg(go.errorDescription))
+                winMain.dialogImport.hide()
+                break;
+
+                case gui.enums.errUnknownError  : default:
+                console.log("Unknown Error", errCode, go.errorDescription)
+                winMain.popupMessage.show(qsTr("The program encounter an unknown error \n%1\n please see log files for more details.", "message of generic error").arg(go.errorDescription))
+                winMain.dialogExport.hide()
+                winMain.dialogImport.hide()
+                winMain.dialogAddUser.hide()
+                winMain.dialogGlobal.hide()
+            }
+        }
+
+        onNotifyUpdate : {
+            go.setUpdateState("forceUpdate")
+            if (!winMain.dialogUpdate.visible) {
+                gui.openMainWindow(true)
+                go.runCheckVersion(false)
+                winMain.dialogUpdate.show()
+            }
+        }
+
+        onNotifyLogout : {
+            go.notifyBubble(0, qsTr("Account %1 has been disconnected. Please log in to continue to use the Import-Export app with this account.").arg(accname) )
+        }
+
+        onNotifyAddressChanged : {
+            go.notifyBubble(0, qsTr("The address list has been changed for account %1. You may need to reconfigure the settings in your email client.").arg(accname) )
+        }
+
+        onNotifyAddressChangedLogout : {
+            go.notifyBubble(0, qsTr("The address list has been changed for account %1. You have to reconfigure the settings in your email client.").arg(accname) )
+        }
+
+
+        onNotifyKeychainRebuild : {
+            go.notifyBubble(1, qsTr(
+                "Your MacOS keychain is probably corrupted. Please consult the instructions in our <a href=\"https://protonmail.com/bridge/faq#c15\">FAQ</a>.",
+                "notification message"
+            ))
+        }
+
+        onNotifyHasNoKeychain : {
+            gui.winMain.dialogGlobal.state="noKeychain"
+            gui.winMain.dialogGlobal.show()
+        }
+
+
+        onExportStructureLoadFinished: {
+            if (okay) winMain.dialogExport.okay()
+            else winMain.dialogExport.cancel()
+        }
+        onImportStructuresLoadFinished: {
+            if (okay) winMain.dialogImport.okay()
+            else winMain.dialogImport.cancel()
+        }
+
+        onSimpleErrorHappen: {
+            if (winMain.dialogImport.visible == true) {
+                winMain.dialogImport.hide()
+            }
+            if (winMain.dialogExport.visible == true) {
+                winMain.dialogExport.hide()
+            }
+        }
+    }
+
+    function folderIcon(folderName, folderType) { // translations
+        switch (folderName.toLowerCase()) {
+            case "inbox"   : return Style.fa.inbox
+            case "sent"    : return Style.fa.send
+            case "spam"    :
+            case "junk"    : return Style.fa.ban
+            case "draft"   : return Style.fa.file_o
+            case "starred" : return Style.fa.star_o
+            case "trash"   : return Style.fa.trash_o
+            case "archive" : return Style.fa.archive
+            default: return folderType == gui.enums.folderTypeLabel ? Style.fa.tag : Style.fa.folder_open
+        }
+        return Style.fa.sticky_note_o
+    }
+
+    function folderTypeTitle(folderType) { // translations
+        if (folderType==gui.enums.folderTypeSystem ) return ""
+        if (folderType==gui.enums.folderTypeLabel  ) return qsTr("Labels"  , "todo")
+        if (folderType==gui.enums.folderTypeFolder ) return qsTr("Folders" , "todo")
+        return "Undef"
+    }
+
+    function isFolderEmpty() {
+        return "true"
+    }
+
+    function getUnixTime(dateString) {
+        var d = new Date(dateString)
+        var n = d.getTime()
+        if (n != n) return -1
+        return n
+    }
+
+    function getYearList(minY,maxY) {
+        var years  = new Array()
+        for (var i=0; i<=maxY-minY;i++) {
+            years[i] = (maxY-i).toString()
+        }
+        //console.log("getYearList:", years)
+        return years
+    }
+
+    function getMonthList(minM,maxM) {
+        var months = new Array()
+        for (var i=0; i<=maxM-minM;i++) {
+            var iMonth = new Date(1989,(i+minM-1),13)
+            months[i] = iMonth.toLocaleString(gui.locale, "MMM")
+        }
+        //console.log("getMonthList:", months[0], months)
+        return months
+    }
+
+    function getDayList(minD,maxD) {
+        var days = new Array()
+        for (var i=0; i<=maxD-minD;i++) {
+            days[i] = gui.prependZeros(i+minD,2)
+        }
+        return days
+    }
+
+    function prependZeros(num,desiredLength) {
+        var s = num+""
+        while (s.length < desiredLength) s="0"+s
+        return s
+    }
+
+    function daysInMonth(year,month) {
+        if (typeof(year) !== 'number') {
+            year = parseInt(year)
+        }
+        if (typeof(month) !== 'number') {
+            month = Date.fromLocaleDateString( gui.locale, "1970-"+month+"-10", "yyyy-MMM-dd").getMonth()+1
+        }
+        var maxDays = (new Date(year,month,0)).getDate()
+        if (isNaN(maxDays)) maxDays = 0
+        //console.log(" daysInMonth", year, month, maxDays)
+        return maxDays
+    }
+
+    function niceDateTime() {
+        var stamp = new Date()
+        var nice = getMonthList(stamp.getMonth()+1, stamp.getMonth()+1)[0]
+        nice += "-" + getDayList(stamp.getDate(), stamp.getDate())[0]
+        nice += "-" + getYearList(stamp.getFullYear(), stamp.getFullYear())[0]
+        nice += " " + gui.prependZeros(stamp.getHours(),2)
+        nice += ":" + gui.prependZeros(stamp.getMinutes(),2)
+        return nice
+    }
+
+    /*
+     // Debug
+     Connections {
+         target: structureExternal
+
+         onDataChanged: {
+             console.log("external data changed")
+         }
+     }
+
+     // Debug
+     Connections {
+         target: structurePM
+
+         onSelectedLabelsChanged: console.log("PM sel labels:", structurePM.selectedLabels)
+         onSelectedFoldersChanged: console.log("PM sel folders:", structurePM.selectedFolders)
+         onDataChanged: {
+             console.log("PM data changed")
+         }
+     }
+     */
+
+    Timer {
+        id: checkVersionTimer
+        repeat : true
+        triggeredOnStart: false
+        interval : Style.main.verCheckRepeatTime
+        onTriggered : go.runCheckVersion(false)
+    }
+
+    property string  areYouSureYouWantToQuit : qsTr("There are incomplete processes - some items are not yet transferred. Do you really want to stop and quit?")
+    // On start
+    Component.onCompleted : {
+        // set spell messages
+        go.wrongCredentials       = qsTr("Incorrect username or password."                               , "notification", -1)
+        go.wrongMailboxPassword   = qsTr("Incorrect mailbox password."                                   , "notification", -1)
+        go.canNotReachAPI         = qsTr("Cannot contact server, please check your internet connection." , "notification", -1)
+        go.versionCheckFailed     = qsTr("Version check was unsuccessful. Please try again later."       , "notification", -1)
+        go.credentialsNotRemoved  = qsTr("Credentials could not be removed."                             , "notification", -1)
+        go.bugNotSent             = qsTr("Unable to submit bug report."                                  , "notification", -1)
+        go.bugReportSent          = qsTr("Bug report successfully sent."                                 , "notification", -1)
+
+        go.runCheckVersion(false)
+        checkVersionTimer.start()
+
+        gui.allMonths = getMonthList(1,12)
+        gui.allMonthsChanged()
+    }
+}

internal/frontend/qml/ImportExportUI/AccountDelegate.qml

@@ -0,0 +1,432 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+// NOTE: Keep the Column so the height and width is inherited from content
+Column {
+    id: root
+    state: status
+    anchors.left: parent.left
+
+    property real row_width: 50 * Style.px
+    property int row_height: Style.accounts.heightAccount
+    property var listalias : aliases.split(";")
+    property int iAccount: index
+
+    property real spacingLastButtons: (row_width - exportAccount.anchors.leftMargin -Style.main.rightMargin - exportAccount.width - logoutAccount.width - deleteAccount.width)/2
+
+    Accessible.role: go.goos=="windows" ? Accessible.Grouping : Accessible.Row
+    Accessible.name: qsTr("Account %1, status %2", "Accessible text describing account row with arguments: account name and status (connected/disconnected), resp.").arg(account).arg(statusMark.text)
+    Accessible.description: Accessible.name
+    Accessible.ignored: !enabled || !visible
+
+    // Main row
+    Rectangle {
+        id: mainaccRow
+        anchors.left: parent.left
+        width  : row_width
+        height : row_height
+        state: { return isExpanded ? "expanded" : "collapsed" }
+        color: Style.main.background
+
+        property string actionName : (
+            isExpanded ?
+            qsTr("Collapse row for account %2", "Accessible text of button showing additional configuration of account") : 
+            qsTr("Expand row for account %2", "Accessible text of button hiding additional configuration of account")
+        ).  arg(account)
+
+
+        // override by other buttons
+        MouseArea {
+            id: mouseArea
+            anchors.fill: parent
+            onClicked : {
+                if (root.state=="connected") {
+                    mainaccRow.toggle_accountSettings()
+                }
+            }
+            cursorShape : root.state == "connected" ? Qt.PointingHandCursor : Qt.ArrowCursor
+            hoverEnabled: true
+            onEntered: {
+                if (mainaccRow.state=="collapsed") {
+                    mainaccRow.color = Qt.lighter(Style.main.background,1.1)
+                }
+            }
+            onExited: {
+                if (mainaccRow.state=="collapsed") {
+                    mainaccRow.color = Style.main.background
+                }
+            }
+        }
+
+        // toggle down/up icon
+        Text {
+            id: toggleIcon
+            anchors {
+                left           : parent.left
+                verticalCenter : parent.verticalCenter
+                leftMargin     : Style.main.leftMargin
+            }
+            color: Style.main.text
+            font {
+                pointSize : Style.accounts.sizeChevron * Style.pt
+                family    : Style.fontawesome.name
+            }
+            text: Style.fa.chevron_down
+
+            MouseArea {
+                anchors.fill: parent
+                onClicked : {
+                    if (root.state=="connected") {
+                        mainaccRow.toggle_accountSettings()
+                    }
+                }
+                cursorShape : root.state == "connected" ? Qt.PointingHandCursor : Qt.ArrowCursor
+                Accessible.role: Accessible.Button
+                Accessible.name: mainaccRow.actionName
+                Accessible.description: mainaccRow.actionName
+                Accessible.onPressAction : {
+                    if (root.state=="connected") {
+                        mainaccRow.toggle_accountSettings()
+                    }
+                }
+                Accessible.ignored: root.state!="connected" || !root.enabled
+            }
+        }
+
+        // account name
+        TextMetrics {
+            id: accountMetrics
+            font : accountName.font
+            elide: Qt.ElideMiddle
+            elideWidth: (
+                statusMark.anchors.leftMargin
+                - toggleIcon.anchors.leftMargin
+            )
+            text: account
+        }
+        Text {
+            id: accountName
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : toggleIcon.left
+                leftMargin     : Style.main.leftMargin
+            }
+            color: Style.main.text
+            font {
+                pointSize : (Style.main.fontSize+2*Style.px) * Style.pt
+            }
+            text: accountMetrics.elidedText
+        }
+
+        // status
+        ClickIconText {
+            id: statusMark
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : parent.left
+                leftMargin     : row_width/2
+            }
+            text      : qsTr("connected", "status of a listed logged-in account")
+            iconText  : Style.fa.circle_o
+            textColor : Style.main.textGreen
+            enabled   : false
+            Accessible.ignored: true
+        }
+
+        // export
+        ClickIconText {
+            id: exportAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : parent.left
+                leftMargin     : 5.5*row_width/8
+            }
+            text      : qsTr("Export All", "todo")
+            iconText  : Style.fa.floppy_o
+            textBold  : true
+            textColor : Style.main.textBlue
+            onClicked: {
+                dialogExport.currentIndex = 0
+                dialogExport.address = account
+                dialogExport.show()
+            }
+        }
+
+        // logout
+        ClickIconText {
+            id: logoutAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : exportAccount.right
+                leftMargin     : root.spacingLastButtons
+            }
+            text      : qsTr("Log out", "action to log out a connected account")
+            iconText  : Style.fa.power_off
+            textBold  : true
+            textColor : Style.main.textBlue
+        }
+
+        // remove
+        ClickIconText {
+            id: deleteAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : logoutAccount.right
+                leftMargin     : root.spacingLastButtons
+            }
+            text      : qsTr("Remove", "deletes an account from the account settings page")
+            iconText  : Style.fa.trash_o
+            textColor : Style.main.text
+            onClicked : {
+                dialogGlobal.input=iAccount
+                dialogGlobal.state="deleteUser"
+                dialogGlobal.show()
+            }
+        }
+
+
+        // functions
+        function toggle_accountSettings() {
+            if (root.state=="connected") {
+                if (mainaccRow.state=="collapsed" ) {
+                    mainaccRow.state="expanded"
+                } else {
+                    mainaccRow.state="collapsed"
+                }
+            }
+        }
+
+        states: [
+            State {
+                name: "collapsed"
+                PropertyChanges { target : toggleIcon  ; text      : root.state=="connected" ? Style.fa.chevron_down : " " }
+                PropertyChanges { target : accountName ; font.bold : false                 }
+                PropertyChanges { target : mainaccRow  ; color     : Style.main.background }
+                PropertyChanges { target : addressList ; visible   : false                 }
+            },
+            State {
+                name: "expanded"
+                PropertyChanges { target : toggleIcon  ; text      : Style.fa.chevron_up               }
+                PropertyChanges { target : accountName ; font.bold : true                              }
+                PropertyChanges { target : mainaccRow  ; color     : Style.accounts.backgroundExpanded }
+                PropertyChanges { target : addressList ; visible   : true                              }
+            }
+        ]
+    }
+
+    // List of adresses
+    Column {
+        id: addressList
+        anchors.left : parent.left
+        width: row_width
+        visible: false
+        property alias model : repeaterAddresses.model
+
+        Repeater {
+            id: repeaterAddresses
+            model: ["one", "two"]
+
+            Rectangle {
+                id: addressRow
+                anchors {
+                    left  : parent.left
+                    right : parent.right
+                }
+                height: Style.accounts.heightAddrRow
+                color: Style.accounts.backgroundExpanded
+
+                // iconText level down
+                Text {
+                    id: levelDown
+                    anchors {
+                        left           : parent.left
+                        leftMargin     : Style.accounts.leftMarginAddr
+                        verticalCenter : wrapAddr.verticalCenter
+                    }
+                    text        : Style.fa.level_up
+                    font.family : Style.fontawesome.name
+                    color       : Style.main.textDisabled
+                    rotation    : 90
+                }
+
+                Rectangle {
+                    id: wrapAddr
+                    anchors {
+                        top         : parent.top
+                        left        : levelDown.right
+                        right       : parent.right
+                        leftMargin  : Style.main.leftMargin
+                        rightMargin : Style.main.rightMargin
+                    }
+                    height: Style.accounts.heightAddr
+                    border {
+                        width : Style.main.border
+                        color : Style.main.line
+                    }
+                    color: Style.accounts.backgroundAddrRow
+
+                    TextMetrics {
+                        id: addressMetrics
+                        font: address.font
+                        elideWidth: (
+                            wrapAddr.width
+                            - address.anchors.leftMargin
+                            - 2*exportAlias.width
+                            - 3*exportAlias.anchors.rightMargin
+                        )
+                        elide: Qt.ElideMiddle
+                        text: modelData
+                    }
+
+                    Text {
+                        id: address
+                        anchors {
+                            verticalCenter : parent.verticalCenter
+                            left: parent.left
+                            leftMargin: Style.main.leftMargin
+                        }
+                        font.pointSize :  Style.main.fontSize * Style.pt
+                        color: Style.main.text
+                        text: addressMetrics.elidedText
+                    }
+
+                    // export
+                    ClickIconText {
+                        id: exportAlias
+                        anchors {
+                            verticalCenter: parent.verticalCenter
+                            right: importAlias.left
+                            rightMargin: Style.main.rightMargin
+                        }
+                        text: qsTr("Export", "todo")
+                        iconText: Style.fa.floppy_o
+                        textBold: true
+                        textColor: Style.main.textBlue
+                        onClicked: {
+                            dialogExport.address = listalias[index]
+                            dialogExport.show()
+                        }
+                    }
+
+                    // import
+                    ClickIconText {
+                        id: importAlias
+                        anchors {
+                            verticalCenter: parent.verticalCenter
+                            right: parent.right
+                            rightMargin: Style.main.rightMargin
+                        }
+                        text: qsTr("Import", "todo")
+                        iconText: Style.fa.upload
+                        textBold: true
+                        textColor: enabled ? Style.main.textBlue : Style.main.textDisabled
+                        onClicked: {
+                            dialogImport.address = listalias[index]
+                            dialogImport.show()
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // line
+    Rectangle {
+        id: line
+        color: Style.accounts.line
+        height: Style.accounts.heightLine
+        width: root.row_width
+    }
+
+
+    states: [
+        State {
+            name: "connected"
+            PropertyChanges {
+                target : addressList
+                model  : listalias
+            }
+            PropertyChanges {
+                target : toggleIcon
+                color  : Style.main.text
+            }
+            PropertyChanges {
+                target : accountName
+                color  : Style.main.text
+            }
+            PropertyChanges {
+                target    : statusMark
+                textColor : Style.main.textGreen
+                text      : qsTr("connected", "status of a listed logged-in account")
+                iconText  : Style.fa.circle
+            }
+            PropertyChanges {
+                target: exportAccount
+                visible: true
+            }
+            PropertyChanges {
+                target : logoutAccount
+                text   : qsTr("Log out", "action to log out a connected account")
+                onClicked : {
+                    mainaccRow.state="collapsed"
+                    dialogGlobal.state = "logout"
+                    dialogGlobal.input = root.iAccount
+                    dialogGlobal.show()
+                    dialogGlobal.confirmed()
+                }
+            }
+        },
+        State {
+            name: "disconnected"
+            PropertyChanges {
+                target : addressList
+                model  : 0
+            }
+            PropertyChanges {
+                target : toggleIcon
+                color  : Style.main.textDisabled
+            }
+            PropertyChanges {
+                target : accountName
+                color  : Style.main.textDisabled
+            }
+            PropertyChanges {
+                target    : statusMark
+                textColor : Style.main.textDisabled
+                text      : qsTr("disconnected", "status of a listed logged-out account")
+                iconText  : Style.fa.circle_o
+            }
+            PropertyChanges {
+                target : logoutAccount
+                text   : qsTr("Log in", "action to log in a disconnected account")
+                onClicked : {
+                    dialogAddUser.username = root.listalias[0]
+                    dialogAddUser.show()
+                    dialogAddUser.inputPassword.focusInput = true
+                }
+            }
+            PropertyChanges {
+                target: exportAccount
+                visible: false
+            }
+        }
+    ]
+}

internal/frontend/qml/ImportExportUI/Credits.qml

@@ -0,0 +1,51 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// credits
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    Rectangle {
+        anchors.centerIn: parent
+        width: Style.main.width
+        height: root.parent.height - 6*Style.dialog.titleSize
+        color: "transparent"
+
+        ListView {
+            anchors.fill: parent
+            clip: true
+            model: go.credits.split(";")
+
+            delegate: AccessibleText {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: modelData
+                color: Style.main.text
+                font.pointSize:  Style.main.fontSize * Style.pt
+            }
+
+            footer: ButtonRounded {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: qsTr("Close", "close window")
+                onClicked: dialogCredits.hide()
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DateBox.qml

@@ -0,0 +1,220 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for year / month / day
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import QtQml.Models 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+ComboBox {
+    id: root
+
+    property string placeholderText : "none"
+    property var    dropDownStyle   : Style.dropDownLight
+    property real   radius          : Style.dialog.radiusButton
+    property bool   below           : true
+
+    onDownChanged : {
+        root.below = popup.y>0
+    }
+
+
+    font.pointSize : Style.main.fontSize * Style.pt
+
+    spacing : Style.dialog.spacing
+    height  : Style.dialog.heightInput
+    width   : 10*Style.px
+
+    function updateWidth() {
+        // make the width according to localization ( especially for Months)
+        var max = 10*Style.px
+        if (root.model === undefined) return
+        for (var i=-1; i<root.model.length; ++i){
+            metrics.text = i<0 ? root.placeholderText : root.model[i]+"MM" // "M" for extra space
+            max = Math.max(max, metrics.width)
+        }
+        root.width = root.spacing + max + root.spacing + indicatorIcon.width + root.spacing
+        //console.log("width updated", root.placeholderText, root.width)
+    }
+
+    TextMetrics {
+        id: metrics
+        font: root.font
+        text: placeholderText
+    }
+
+
+    indicator: Text {
+        id: indicatorIcon
+        color: root.enabled  ? dropDownStyle.highlight : dropDownStyle.inactive
+        text: root.down ? Style.fa.chevron_up : Style.fa.chevron_down
+        font.family: Style.fontawesome.name
+        anchors {
+            right: parent.right
+            rightMargin: root.spacing
+            verticalCenter: parent.verticalCenter
+        }
+    }
+
+    contentItem: Text {
+        id: boxItem
+        leftPadding: root.spacing
+        rightPadding: root.spacing
+
+        text              : enabled && root.currentIndex>=0 ? root.displayText : placeholderText
+        font              : root.font
+        color             : root.enabled ? dropDownStyle.text : dropDownStyle.inactive
+        verticalAlignment : Text.AlignVCenter
+        elide             : Text.ElideRight
+    }
+
+    background: Rectangle {
+        color: Style.transparent
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked: root.down ?  root.popup.close() : root.popup.open()
+        }
+    }
+
+
+    DelegateModel { // FIXME QML DelegateModel: Error creating delegate
+        id: filteredData
+        model: root.model
+        filterOnGroup: "filtered"
+        groups: DelegateModelGroup {
+            id: filtered
+            name: "filtered"
+            includeByDefault: true
+        }
+        delegate: root.delegate
+    }
+
+    function filterItems(minIndex,maxIndex) {
+        // filter
+        var rowCount = filteredData.items.count
+        if (rowCount<=0) return
+        //console.log(" filter", root.placeholderText, rowCount, minIndex, maxIndex)
+        for (var iItem = 0; iItem < rowCount; iItem++) {
+            var entry = filteredData.items.get(iItem);
+            entry.inFiltered = ( iItem >= minIndex && iItem <= maxIndex )
+            //console.log("     inserted ", iItem, rowCount, entry.model.modelData, entry.inFiltered )
+        }
+    }
+
+    delegate: ItemDelegate {
+        id: thisItem
+        width         : view.width
+        height        : Style.dialog.heightInput
+        leftPadding   : root.spacing
+        rightPadding  : root.spacing
+        topPadding    : 0
+        bottomPadding : 0
+
+        property int index : {
+            //console.log( "index: ", thisItem.DelegateModel.itemsIndex )
+            return thisItem.DelegateModel.itemsIndex
+        }
+
+        onClicked : {
+            //console.log("thisItem click", thisItem.index)
+            root.currentIndex = thisItem.index
+            root.activated(thisItem.index)
+            root.popup.close()
+        }
+
+
+        contentItem: Text {
+            text: modelData
+            color: dropDownStyle.text
+            font: root.font
+            elide: Text.ElideRight
+            verticalAlignment: Text.AlignVCenter
+        }
+
+        background: Rectangle {
+            color: thisItem.hovered ? dropDownStyle.highlight : dropDownStyle.background
+            Text {
+                anchors{
+                    right: parent.right
+                    rightMargin: root.spacing
+                    verticalCenter: parent.verticalCenter
+                }
+                font {
+                    family: Style.fontawesome.name
+                }
+                text: root.currentIndex == thisItem.index ? Style.fa.check : ""
+                color: thisItem.hovered ? dropDownStyle.text : dropDownStyle.highlight
+            }
+
+            Rectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    bottom: parent.bottom
+                }
+                height: Style.dialog.borderInput
+                color: dropDownStyle.separator
+            }
+        }
+    }
+
+    popup: Popup {
+        y: root.height
+        x: -background.strokeWidth
+        width: root.width + 2*background.strokeWidth
+        modal: true
+        closePolicy: Popup.CloseOnPressOutside | Popup.CloseOnEscape
+        topPadding: background.radiusTopLeft + 2*background.strokeWidth
+        bottomPadding: background.radiusBottomLeft + 2*background.strokeWidth
+        leftPadding: 2*background.strokeWidth
+        rightPadding: 2*background.strokeWidth
+
+        contentItem: ListView {
+            id: view
+            clip: true
+            implicitHeight: winMain.height/3
+            model: filteredData // if you want to slide down to position: popup.visible ? root.delegateModel : null
+            currentIndex: root.currentIndex
+
+            ScrollIndicator.vertical: ScrollIndicator { }
+        }
+
+        background: RoundedRectangle {
+            radiusTopLeft     : root.below  ?  0 : root.radius
+            radiusBottomLeft  : !root.below ?  0 : root.radius
+            radiusTopRight    : radiusTopLeft
+            radiusBottomRight : radiusBottomLeft
+            fillColor         : dropDownStyle.background
+        }
+    }
+
+    Component.onCompleted: {
+        //console.log(" box ", label)
+        root.updateWidth()
+        root.filterItems(0,model.length-1)
+    }
+
+    onModelChanged :{
+        //console.log("model changed", root.placeholderText)
+        root.updateWidth()
+        root.filterItems(0,model.length-1)
+    }
+}
+

internal/frontend/qml/ImportExportUI/DateInput.qml

@@ -0,0 +1,264 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+
+    width  : row.width + (root.label == "" ? 0 : textlabel.width)
+    height : row.height
+    color  : Style.transparent
+
+    property alias  label        : textlabel.text
+    property string metricsLabel : root.label
+    property var dropDownStyle   : Style.dropDownLight
+
+    // dates
+    property date  currentDate    : new Date()  // default now
+    property date  minDate        : new Date(0) // default epoch start
+    property date  maxDate        : new Date()  // default now
+    property bool  isMaxDateToday : false
+    property int   unix           : Math.floor(currentDate.getTime()/1000)
+
+    onMinDateChanged: {
+        if (isNaN(minDate.getTime()) || minDate.getTime() > maxDate.getTime()) {
+            minDate = new Date(0)
+        }
+        //console.log(" minDate changed:", root.label, minDate.toDateString())
+        updateRange()
+    }
+    onMaxDateChanged: {
+        if (isNaN(maxDate.getTime()) || minDate.getTime() > maxDate.getTime()) {
+            maxDate = new Date()
+        }
+        //console.log(" maxDate changed:", root.label, maxDate.toDateString())
+        updateRange()
+    }
+
+    RoundedRectangle {
+        id: background
+        anchors.fill      : row
+        strokeColor       : dropDownStyle.line
+        strokeWidth       : Style.dialog.borderInput
+        fillColor         : dropDownStyle.background
+        radiusTopLeft     : row.children[0].down                     && !row.children[0].below                     ? 0 : Style.dialog.radiusButton
+        radiusBottomLeft  : row.children[0].down                     && row.children[0].below                      ? 0 : Style.dialog.radiusButton
+        radiusTopRight    : row.children[row.children.length-1].down && !row.children[row.children.length-1].below ? 0 : Style.dialog.radiusButton
+        radiusBottomRight : row.children[row.children.length-1].down && row.children[row.children.length-1].below  ? 0 : Style.dialog.radiusButton
+    }
+
+    TextMetrics {
+        id: textMetrics
+        text: root.metricsLabel+"M"
+        font: textlabel.font
+    }
+
+    Text {
+        id: textlabel
+        anchors {
+            left           : root.left
+            verticalCenter : root.verticalCenter
+        }
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: dropDownStyle.labelBold
+        }
+        color: dropDownStyle.text
+        width: textMetrics.width
+        verticalAlignment: Text.AlignVCenter
+    }
+
+    Row {
+        id: row
+
+        anchors {
+            left   : root.label=="" ? root.left : textlabel.right
+            bottom : root.bottom
+        }
+        padding   : Style.dialog.borderInput
+
+        DateBox {
+            id: monthInput
+            placeholderText: qsTr("Month")
+            enabled: !allDates
+            model: gui.allMonths
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+
+        Rectangle {
+            width: Style.dialog.borderInput
+            height: monthInput.height
+            color: dropDownStyle.line
+            anchors.verticalCenter: parent.verticalCenter
+        }
+
+        DateBox {
+            id: dayInput
+            placeholderText: qsTr("Day")
+            enabled: !allDates
+            model: gui.allDays
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+
+        Rectangle {
+            width: Style.dialog.borderInput
+            height: monthInput.height
+            color: dropDownStyle.line
+        }
+
+        DateBox {
+            id: yearInput
+            placeholderText: qsTr("Year")
+            enabled: !allDates
+            model: gui.allYears
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+    }
+
+
+    function setDate(d) {
+        //console.trace()
+        //console.log( "    setDate ", label, d)
+        if (isNaN(d = parseInt(d))) return
+        var newUnix = Math.min(maxDate.getTime(), d*1000) // seconds to ms
+        newUnix = Math.max(minDate.getTime(), newUnix)
+        root.updateRange(new Date(newUnix))
+        //console.log( "        set ", currentDate.getTime())
+    }
+
+
+    function updateRange(curr) {
+        if (curr === undefined || isNaN(curr.getTime())) curr = root.getCurrentDate()
+        //console.log( "    update", label, curr, curr.getTime())
+        //console.trace()
+        if (isNaN(curr.getTime())) return // shouldn't happen
+        // full system date range
+        var firstYear = parseInt(gui.allYears[0])
+        var firstDay = parseInt(gui.allDays[0])
+        if ( isNaN(firstYear) || isNaN(firstDay) ) return
+        // get minimal and maximal available year, month, day
+        // NOTE: The order is important!!!
+        var minYear  = minDate.getFullYear()
+        var maxYear  = maxDate.getFullYear()
+        var minMonth = (curr.getFullYear() == minYear  ? minDate.getMonth() : 0  )
+        var maxMonth = (curr.getFullYear() == maxYear  ? maxDate.getMonth() : 11 )
+        var minDay   = (
+            curr.getFullYear() == minYear  &&
+            curr.getMonth()    == minMonth ?
+            minDate.getDate() : firstDay
+        )
+        var maxDay   = (
+            curr.getFullYear() == maxYear  &&
+            curr.getMonth()    == maxMonth ?
+            maxDate.getDate() : gui.daysInMonth(curr.getFullYear(), curr.getMonth()+1)
+        )
+
+        //console.log("update ranges: ", root.label, minYear, maxYear, minMonth+1, maxMonth+1, minDay, maxDay)
+        //console.log("update indexes: ", root.label, firstYear-minYear, firstYear-maxYear, minMonth, maxMonth, minDay-firstDay, maxDay-firstDay)
+
+
+        yearInput.filterItems(firstYear-maxYear, firstYear-minYear)
+        monthInput.filterItems(minMonth,maxMonth) // getMonth() is index not a month (i.e. Jan==0)
+        dayInput.filterItems(minDay-1,maxDay-1)
+
+        // keep ordering from model not from filter
+        yearInput  .currentIndex = firstYear - curr.getFullYear()
+        monthInput .currentIndex = curr.getMonth() // getMonth() is index not a month (i.e. Jan==0)
+        dayInput   .currentIndex = curr.getDate()-firstDay
+
+        /*
+         console.log(
+             "update current indexes: ", root.label,
+             curr.getFullYear() , '->' , yearInput.currentIndex  ,
+             gui.allMonths[curr.getMonth()]    , '->' , monthInput.currentIndex ,
+             curr.getDate()     , '->' , dayInput.currentIndex
+         )
+         */
+
+        // test if current date changed
+        if (
+            yearInput.currentText  == root.currentDate.getFullYear()                      &&
+            monthInput.currentText == root.currentDate.toLocaleString(gui.locale, "MMM") &&
+            dayInput.currentText   == gui.prependZeros(root.currentDate.getDate(),2)
+        ) {
+            //console.log(" currentDate NOT changed", label, root.currentDate.toDateString())
+            return
+        }
+
+        root.currentDate = root.getCurrentDate()
+        // console.log(" currentDate changed", label, root.currentDate.toDateString())
+    }
+
+    // get current date from selected
+    function getCurrentDate() {
+        if (isNaN(root.currentDate.getTime())) { // wrong current ?
+            console.log("!WARNING! Wrong current date format", root.currentDate)
+            root.currentDate = new Date(0)
+        }
+        var currentString = ""
+        var currentUnix = root.currentDate.getTime()
+        if (
+            yearInput.currentText  != ""                         &&
+            yearInput.currentText  != yearInput.placeholderText  &&
+            monthInput.currentText != ""                         &&
+            monthInput.currentText != monthInput.placeholderText
+        ) {
+            var day = gui.daysInMonth(yearInput.currentText, monthInput.currentText)
+            if (!isNaN(parseInt(dayInput.currentText))) {
+                day = Math.min(day, parseInt(dayInput.currentText))
+            }
+            var month = gui.allMonths.indexOf(monthInput.currentText)
+            var year = parseInt(yearInput.currentText)
+            var pickedDate = new Date(year, month, day)
+            // Compensate automatic DST in windows
+            if (pickedDate.getDate() != day) {
+                pickedDate.setTime(pickedDate.getTime() + 60*60*1000) // add hour
+            }
+            currentUnix = pickedDate.getTime()
+        }
+        return new Date(Math.max(
+            minDate.getTime(),
+            Math.min(maxDate.getTime(), currentUnix)
+        ))
+    }
+}

internal/frontend/qml/ImportExportUI/DateRange.qml

@@ -0,0 +1,123 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Column {
+    id: dateRange
+
+    property var   structure : transferRules
+    property string sourceID : "-1"
+
+    property alias allDates      : allDatesBox.checked
+    property alias inputDateFrom : inputDateFrom
+    property alias inputDateTo   : inputDateTo
+
+    function getRange() {common.getRange()}
+    function setRangeFromTo(from, to) {common.setRangeFromTo(from, to)}
+    function applyRange() {common.applyRange()}
+
+    property var dropDownStyle : Style.dropDownLight
+    property var isDark : dropDownStyle.background == Style.dropDownDark.background
+
+    spacing: Style.dialog.spacing
+
+    DateRangeFunctions {id:common}
+
+    DateInput {
+        id: inputDateFrom
+        label: qsTr("From:")
+        currentDate: gui.netBday
+        maxDate: inputDateTo.currentDate
+        dropDownStyle: dateRange.dropDownStyle
+    }
+
+    Rectangle {
+        width: inputDateTo.width
+        height: Style.dialog.borderInput / 2
+        color: isDark ? dropDownStyle.separator : Style.transparent
+    }
+
+    DateInput {
+        id: inputDateTo
+        label: qsTr("To:")
+        metricsLabel: inputDateFrom.label
+        currentDate: new Date() // now
+        minDate: inputDateFrom.currentDate
+        isMaxDateToday: true
+        dropDownStyle: dateRange.dropDownStyle
+    }
+
+    Rectangle {
+        width: inputDateTo.width
+        height: Style.dialog.borderInput
+        color: isDark ? dropDownStyle.separator : Style.transparent
+    }
+
+    CheckBoxLabel {
+        id: allDatesBox
+        text            : qsTr("All dates")
+        anchors.right   : inputDateTo.right
+        checkedSymbol   : Style.fa.toggle_on
+        uncheckedSymbol : Style.fa.toggle_off
+        uncheckedColor  : Style.main.textDisabled
+        textColor       : dropDownStyle.text
+        symbolPointSize : Style.dialog.iconSize * Style.pt * 1.1
+        spacing         : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: allDatesBox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: allDatesBox.symbolPointSize
+            }
+        }
+
+        Rectangle {
+            color: allDatesBox.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: allDatesBox.left
+                verticalCenter: allDatesBox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DateRangeFunctions.qml

@@ -0,0 +1,81 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    /*
+     NOTE: need to be in obejct with
+     id: dateRange
+
+     property var   structure : structureExternal
+     property string sourceID : structureExternal.getID ( -1 )
+
+     property alias allDates      : allDatesBox.checked
+     property alias inputDateFrom : inputDateFrom
+     property alias inputDateTo   : inputDateTo
+
+     function getRange() {common.getRange()}
+     function applyRange() {common.applyRange()}
+     */
+
+    function resetRange() {
+        inputDateFrom.setDate(gui.netBday.getTime())
+        inputDateTo.setDate((new Date()).getTime())
+    }
+
+    function setRangeFromTo(folderFrom, folderTo){ // unix time in seconds
+        if ( folderFrom == 0 && folderTo ==0 ) {
+            dateRange.allDates = true
+        } else {
+            dateRange.allDates = false
+            inputDateFrom.setDate(folderFrom)
+            inputDateTo.setDate(folderTo)
+        }
+    }
+
+    function getRange(){ // unix time in seconds
+        //console.log(" ==== GET RANGE === ")
+        //console.trace()
+        var folderFrom = dateRange.structure.globalFromDate
+        var folderTo = dateRange.structure.globalToDate
+
+        root.setRangeFromTo(folderFrom, folderTo)
+    }
+
+    function applyRange(){ // unix time is seconds
+        if (dateRange.allDates)  structure.setFromToDate(dateRange.sourceID, 0, 0)
+        else {
+            var endOfDay = new Date(inputDateTo.unix*1000)
+            endOfDay.setHours(23,59,59,999)
+            var endOfDayUnix = parseInt(endOfDay.getTime()/1000)
+            structure.setFromToDate(dateRange.sourceID, inputDateFrom.unix, endOfDayUnix)
+        }
+    }
+
+    Component.onCompleted: {
+        inputDateFrom.updateRange(gui.netBday)
+        inputDateTo.updateRange(new Date())
+        //getRange()
+    }
+}
+

internal/frontend/qml/ImportExportUI/DateRangeMenu.qml

@@ -0,0 +1,163 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Rectangle {
+    id:root
+
+    width  : icon.width + indicator.width + 3*padding
+    height : icon.height + 3*padding
+
+    property real padding : Style.dialog.spacing
+    property bool down    : popup.visible
+
+    property var  structure   : transferRules
+    property string  sourceID : ""
+    property int  sourceFromDate : 0
+    property int  sourceToDate : 0
+
+    color: Style.transparent
+
+    RoundedRectangle {
+        anchors.fill: parent
+        radiusTopLeft: root.down ? 0 : Style.dialog.radiusButton
+        fillColor: root.down ? Style.main.textBlue : Style.transparent
+    }
+
+    Text {
+        id: icon
+        text: Style.fa.calendar_o
+        anchors {
+            left           : parent.left
+            leftMargin     : root.padding
+            verticalCenter : parent.verticalCenter
+        }
+
+        color: root.enabled ? (
+            root.down ? Style.main.background : Style.main.text
+        ) : Style.main.textDisabled
+
+        font.family : Style.fontawesome.name
+
+        Text {
+            anchors {
+                verticalCenter: parent.bottom
+                horizontalCenter: parent.right
+            }
+
+            color          : !root.down && root.enabled ? Style.main.textRed : icon.color
+            text           : Style.fa.exclamation_circle
+            visible        : !dateRangeInput.allDates
+            font.pointSize : root.padding * Style.pt * 1.5
+            font.family    : Style.fontawesome.name
+        }
+    }
+
+
+    Text {
+        id: indicator
+        anchors {
+            right          : parent.right
+            rightMargin    : root.padding
+            verticalCenter : parent.verticalCenter
+        }
+
+        text  : root.down ? Style.fa.chevron_up : Style.fa.chevron_down
+        color : !root.down && root.enabled ? Style.main.textBlue : icon.color
+        font.family : Style.fontawesome.name
+    }
+
+    MouseArea {
+        anchors.fill: root
+        onClicked: {
+            popup.open()
+        }
+    }
+
+    Popup {
+        id: popup
+
+        x      : -width
+        modal  : true
+        clip   : true
+
+        topPadding : 0
+
+        background: RoundedRectangle {
+            fillColor   : Style.bubble.paneBackground
+            strokeColor : fillColor
+            radiusTopRight: 0
+
+            RoundedRectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    top: parent.top
+                }
+                height: Style.dialog.heightInput
+                fillColor: Style.dropDownDark.highlight
+                strokeColor: fillColor
+                radiusTopRight: 0
+                radiusBottomLeft: 0
+                radiusBottomRight: 0
+            }
+        }
+
+        contentItem : Column {
+            spacing: Style.dialog.spacing
+
+            Text {
+                anchors {
+                    left: parent.left
+                }
+
+                text              : qsTr("Import date range")
+                font.bold         : Style.dropDownDark.labelBold
+                color             : Style.dropDownDark.text
+                height            : Style.dialog.heightInput
+                verticalAlignment : Text.AlignVCenter
+            }
+
+            DateRange {
+                id: dateRangeInput
+                allDates: true
+                structure: root.structure
+                sourceID: root.sourceID
+                dropDownStyle: Style.dropDownDark
+            }
+        }
+
+        onAboutToShow : updateRange()
+        onAboutToHide : dateRangeInput.applyRange()
+    }
+
+    function updateRange() {
+        dateRangeInput.setRangeFromTo(root.sourceFromDate, root.sourceToDate)
+    }
+
+    Connections {
+        target:root
+        onSourceFromDateChanged: root.updateRange()
+        onSourceToDateChanged: root.updateRange()
+    }
+}

internal/frontend/qml/ImportExportUI/DialogExport.qml

@@ -0,0 +1,457 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Export dialog
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+// TODO
+//  - make ErrorDialog module
+//  - map decision to error code : ask (default), skip ()
+//  - what happens when import fails ? heuristic to find mail where to start from
+
+Dialog {
+    id: root
+
+    enum Page {
+        LoadingStructure = 0, Options, Progress
+    }
+
+    title : set_title()
+
+    property string address
+    property alias finish: finish
+
+    property string msgClearUnfished: qsTr ("Remove already exported files.")
+
+    isDialogBusy : true // currentIndex == 0 ||  currentIndex == 3 
+
+    signal cancel()
+    signal okay()
+
+
+    Rectangle { // 0
+        id: dialogLoading
+        width: root.width
+        height: root.height
+        color: Style.transparent
+
+        Text {
+            anchors.centerIn : dialogLoading
+            font.pointSize: Style.dialog.titleSize * Style.pt
+            color: Style.dialog.text
+            horizontalAlignment: Text.AlignHCenter
+            text: qsTr("Loading folders and labels for", "todo") +"\n" + address
+        }
+    }
+
+    Rectangle { // 1
+        id: dialogInput
+        width: root.width
+        height: root.height
+        color: Style.transparent
+
+        Row {
+            id: inputRow
+            anchors {
+                topMargin        : root.titleHeight
+                top              : parent.top
+                horizontalCenter : parent.horizontalCenter
+            }
+            spacing: 3*Style.main.leftMargin
+            property real columnWidth  : (root.width - Style.main.leftMargin - inputRow.spacing - Style.main.rightMargin) / 2
+            property real columnHeight :  root.height  - root.titleHeight - Style.main.leftMargin
+
+
+            ExportStructure {
+                id: sourceFoldersInput
+                width  : inputRow.columnWidth
+                height : inputRow.columnHeight
+                title  : qsTr("From: %1", "todo").arg(address)
+            }
+
+            Column {
+                spacing: (inputRow.columnHeight - dateRangeInput.height - outputFormatInput.height - outputPathInput.height - buttonRow.height -  infotipEncrypted.height) / 4
+
+                DateRange{
+                    id: dateRangeInput
+                }
+
+                OutputFormat {
+                    id: outputFormatInput
+                }
+
+                Row {
+                    spacing: Style.dialog.spacing
+                    CheckBoxLabel {
+                        id: exportEncrypted
+                        text: qsTr("Export emails that cannot be decrypted as ciphertext")
+                        anchors {
+                            bottom: parent.bottom
+                            bottomMargin: Style.dialog.fontSize/1.8
+                        }
+                    }
+
+                    InfoToolTip {
+                        id: infotipEncrypted
+                        anchors {
+                            verticalCenter: exportEncrypted.verticalCenter
+                        }
+                        info: qsTr("Checking this option will export all emails that cannot be decrypted in ciphertext. If this option is not checked, these emails will not be exported", "todo")
+                    }
+                }
+
+                FileAndFolderSelect {
+                    id: outputPathInput
+                    title: qsTr("Select location of export:", "todo")
+                    width  : inputRow.columnWidth // stretch folder input
+                }
+
+                Row {
+                    id: buttonRow
+                    anchors.right : parent.right
+                    spacing       : Style.dialog.rightMargin
+
+                    ButtonRounded {
+                        id:buttonCancel
+                        fa_icon: Style.fa.times
+                        text: qsTr("Cancel")
+                        color_main: Style.main.textBlue
+                        onClicked : root.cancel()
+                    }
+
+                    ButtonRounded {
+                        id: buttonNext
+                        fa_icon: Style.fa.check
+                        text: qsTr("Export","todo")
+                        enabled: transferRules != 0
+                        color_main: Style.dialog.background
+                        color_minor: enabled ? Style.dialog.textBlue : Style.main.textDisabled
+                        isOpaque: true
+                        onClicked : root.okay()
+                    }
+                }
+            }
+        }
+    }
+
+    Rectangle { // 2
+        id: progressStatus
+        width: root.width
+        height: root.height
+        color: "transparent"
+
+        Row {
+            anchors {
+                bottom: progressbarExport.top
+                bottomMargin: Style.dialog.heightSeparator
+                left: progressbarExport.left
+            }
+            spacing: Style.main.rightMargin
+            AccessibleText {
+                id: statusLabel
+                text : qsTr("Status:")
+                font.pointSize: Style.main.iconSize * Style.pt
+                color : Style.main.text
+            }
+            AccessibleText {
+                anchors.baseline: statusLabel.baseline
+                text :  {
+                    if (progressbarExport.isFinished) return qsTr("finished")
+                    if (go.progressDescription == "") return qsTr("exporting")
+                    return go.progressDescription
+                }
+                elide: Text.ElideMiddle
+                width: progressbarExport.width - parent.spacing - statusLabel.width
+                font.pointSize: Style.dialog.textSize * Style.pt
+                color : Style.main.textDisabled
+            }
+        }
+
+        ProgressBar {
+            id: progressbarExport
+            implicitWidth  : 2*progressStatus.width/3
+            implicitHeight : Style.exporting.rowHeight
+            value: go.progress
+            property int current:  go.total * go.progress
+            property bool isFinished:  finishedPartBar.width == progressbarExport.width
+            anchors {
+                centerIn: parent
+            }
+            background: Rectangle {
+                radius         : Style.exporting.boxRadius
+                color          : Style.exporting.progressBackground
+            }
+            contentItem: Item {
+                Rectangle {
+                    id: finishedPartBar
+                    width  : parent.width * progressbarExport.visualPosition
+                    height : parent.height
+                    radius : Style.exporting.boxRadius
+                    gradient  : Gradient {
+                        GradientStop { position: 0.00; color: Qt.lighter(Style.exporting.progressStatus,1.1) }
+                        GradientStop { position: 0.66; color: Style.exporting.progressStatus }
+                        GradientStop { position: 1.00; color: Qt.darker(Style.exporting.progressStatus,1.1) }
+                    }
+
+                    Behavior on width {
+                        NumberAnimation { duration:800;  easing.type: Easing.InOutQuad }
+                    }
+                }
+                Text {
+                    anchors.centerIn: parent
+                    text: {
+                        if (progressbarExport.isFinished) return qsTr("Export finished","todo")
+                        if (
+                            go.progressDescription == gui.enums.progressInit || 
+                            (go.progress==0 && go.description=="")
+                        ) {
+                            if (go.total>1) return qsTr("Estimating the total number of messages (%1)","todo").arg(go.total)
+                            else return qsTr("Estimating the total number of messages","todo")
+                        } 
+                        var msg = qsTr("Exporting message %1 of %2 (%3%)","todo")
+                        if (pauseButton.paused) msg = qsTr("Exporting paused at message %1 of %2 (%3%)","todo")
+                        return msg.arg(progressbarExport.current).arg(go.total).arg(Math.floor(go.progress*100))
+                    }
+                    color: Style.main.background
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                    }
+                }
+            }
+        }
+
+        Row {
+            anchors {
+                top: progressbarExport.bottom
+                topMargin : Style.dialog.heightSeparator
+                horizontalCenter: parent.horizontalCenter
+            }
+            spacing: Style.dialog.rightMargin
+
+            ButtonRounded {
+                id: pauseButton
+                property bool paused : false
+                fa_icon    : paused ? Style.fa.play : Style.fa.pause
+                text       : paused ? qsTr("Resume") : qsTr("Pause")
+                color_main : Style.dialog.textBlue
+                onClicked  : {
+                    if (paused) {
+                        if (winMain.updateState == gui.enums.statusNoInternet) {
+                            go.notifyError(gui.enums.errNoInternet)
+                            return
+                        }
+                        go.resumeProcess()
+                    } else {
+                        go.pauseProcess()
+                    }
+                    paused = !paused
+                    pauseButton.focus=false
+                }
+                visible    : !progressbarExport.isFinished
+            }
+
+            ButtonRounded {
+                fa_icon    : Style.fa.times
+                text       : qsTr("Cancel")
+                color_main : Style.dialog.textBlue
+                visible    : !progressbarExport.isFinished
+                onClicked  : root.ask_cancel_progress()
+            }
+
+            ButtonRounded {
+                id: finish
+                fa_icon     : Style.fa.check
+                text        : qsTr("Okay","todo")
+                color_main  : Style.dialog.background
+                color_minor : Style.dialog.textBlue
+                isOpaque    : true
+                visible     : progressbarExport.isFinished
+                onClicked   : root.okay()
+            }
+        }
+
+        ClickIconText {
+            id: buttonHelp
+            anchors {
+                right        : parent.right
+                bottom       : parent.bottom
+                rightMargin  : Style.main.rightMargin
+                bottomMargin : Style.main.rightMargin
+            }
+            textColor  : Style.main.textDisabled
+            iconText   : Style.fa.question_circle
+            text       : qsTr("Help", "directs the user to the online user guide")
+            textBold   : true
+            onClicked  : Qt.openUrlExternally("https://protonmail.com/support/categories/import-export/")
+        }
+    }
+
+    PopupMessage {
+        id: errorPopup
+        width: root.width
+        height: root.height
+    }
+
+    function check_inputs() {
+        if (currentIndex == 1) {
+            // at least one email to export
+            if (transferRules.rowCount() == 0){
+                errorPopup.show(qsTr("No emails found to export. Please try another address.", "todo"))
+                return false
+            }
+            // at least one source selected
+            /*
+             if (!transferRules.atLeastOneSelected) {
+                 errorPopup.show(qsTr("Please select at least one item to export.", "todo"))
+                 return false
+             }
+             */
+            // check path
+            var folderCheck = go.checkPathStatus(outputPathInput.path)
+            switch (folderCheck) {
+                case gui.enums.pathEmptyPath:
+                errorPopup.show(qsTr("Missing export path. Please select an output folder."))
+                break;
+                case gui.enums.pathWrongPath:
+                errorPopup.show(qsTr("Folder '%1' not found. Please select an output folder.").arg(outputPathInput.path))
+                break;
+                case gui.enums.pathOK | gui.enums.pathNotADir:
+                errorPopup.show(qsTr("File '%1' is not a folder. Please select an output folder.").arg(outputPathInput.path))
+                break;
+                case gui.enums.pathWrongPermissions:
+                errorPopup.show(qsTr("Cannot access folder '%1'. Please check folder permissions.").arg(outputPathInput.path))
+                break;
+            }
+            if (
+                (folderCheck&gui.enums.pathOK)==0 ||
+                (folderCheck&gui.enums.pathNotADir)==gui.enums.pathNotADir
+            ) return false
+            if (winMain.updateState == gui.enums.statusNoInternet) {
+                errorPopup.show(qsTr("Please check your internet connection."))
+                return false
+            }
+        }
+        return true
+    }
+
+    function set_title() {
+        switch(root.currentIndex){
+            case 1 : return qsTr("Select what you'd like to export:")
+            default: return ""
+        }
+    }
+
+    function clear_status() {
+        go.progress=0.0
+        go.total=0.0
+        go.progressDescription=gui.enums.progressInit
+    }
+
+    function ask_cancel_progress(){
+        errorPopup.buttonYes.visible = true
+        errorPopup.buttonNo.visible = true
+        errorPopup.buttonOkay.visible = false
+        errorPopup.show ("Are you sure you want to cancel this export?")
+    }
+
+
+    onCancel : {
+        switch (root.currentIndex) {
+            case 0 :
+            case 1 : root.hide(); break;
+            case 2 : // progress bar 
+            go.cancelProcess();
+            // no break
+            default:
+            root.clear_status()
+            root.currentIndex=1
+        }
+    }
+
+    onOkay : {
+        var isOK = check_inputs()
+        if (!isOK) return
+        timer.interval= currentIndex==1 ? 1 : 300
+        switch (root.currentIndex) {
+            case 2: // progress
+            root.clear_status()
+            root.hide()
+            break
+            case 0: // loading structure
+            dateRangeInput.getRange()
+            //no break
+            default:
+            incrementCurrentIndex()
+            timer.start()
+        }
+    }
+
+    onShow: {
+        if (winMain.updateState==gui.enums.statusNoInternet) {
+            go.checkInternet()
+            if (winMain.updateState==gui.enums.statusNoInternet) {
+                go.notifyError(gui.enums.errNoInternet)
+                root.hide()
+                return
+            }
+        }
+
+        root.clear_status()
+        root.currentIndex=0
+        timer.interval = 300
+        timer.start()
+        dateRangeInput.allDates = true
+    }
+
+    Connections {
+        target: timer
+        onTriggered : {
+            switch (currentIndex) {
+                case 0:
+                go.loadStructureForExport(root.address)
+                sourceFoldersInput.hasItems = (transferRules.rowCount() > 0)
+                break
+                case 2:
+                dateRangeInput.applyRange()
+                go.startExport(
+                    outputPathInput.path,
+                    root.address,
+                    outputFormatInput.checkedText,
+                    exportEncrypted.checked
+                )
+                break
+            }
+        }
+    }
+
+    Connections {
+        target: errorPopup
+
+        onClickedOkay  : errorPopup.hide()
+        onClickedYes : {
+            root.cancel()
+            errorPopup.hide()
+        }
+        onClickedNo  : {
+            go.resumeProcess()
+            errorPopup.hide()
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DialogYesNo.qml

@@ -0,0 +1,354 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Dialog with Yes/No buttons
+
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Dialog {
+    id: root
+
+    title : ""
+
+    property string input
+
+    property alias question  : msg.text
+    property alias note      : noteText.text
+    property alias answer    : answ.text
+    property alias buttonYes : buttonYes
+    property alias buttonNo  : buttonNo
+
+    isDialogBusy: currentIndex==1
+
+    signal confirmed()
+
+    Column {
+        id: dialogMessage
+        property int heightInputs : msg.height+
+        middleSep.height+
+        buttonRow.height +
+        (checkboxSep.visible ? checkboxSep.height : 0 ) +
+        (noteSep.visible ? noteSep.height : 0 ) +
+        (checkBoxWrapper.visible ? checkBoxWrapper.height : 0 ) +
+        (root.note!="" ? noteText.height : 0 )
+
+        Rectangle { color : "transparent"; width : Style.main.dummy; height : (root.height-dialogMessage.heightInputs)/2 }
+
+        AccessibleText {
+            id:noteText
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                bold: false
+            }
+            width: 2*root.width/3
+            horizontalAlignment: Text.AlignHCenter
+            wrapMode: Text.Wrap
+        }
+        Rectangle { id: noteSep; visible: note!=""; color : "transparent"; width : Style.main.dummy; height : Style.dialog.heightSeparator}
+
+        AccessibleText {
+            id: msg
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                bold: true
+            }
+            width: 2*parent.width/3
+            text : ""
+            horizontalAlignment: Text.AlignHCenter
+            wrapMode: Text.Wrap
+        }
+
+        Rectangle { id: checkboxSep; visible: checkBoxWrapper.visible; color : "transparent"; width : Style.main.dummy; height : Style.dialog.heightSeparator}
+        Row {
+            id: checkBoxWrapper
+            property bool isChecked : false
+            visible: root.state=="deleteUser"
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Style.dialog.spacing
+
+            function toggle() {
+                checkBoxWrapper.isChecked = !checkBoxWrapper.isChecked
+            }
+
+            Text {
+                id: checkbox
+                font {
+                    pointSize : Style.dialog.iconSize * Style.pt
+                    family    : Style.fontawesome.name
+                }
+                anchors.verticalCenter : parent.verticalCenter
+                text: checkBoxWrapper.isChecked ? Style.fa.check_square_o : Style.fa.square_o
+                color: checkBoxWrapper.isChecked ? Style.main.textBlue : Style.main.text
+
+                MouseArea {
+                    anchors.fill: parent
+                    onPressed: checkBoxWrapper.toggle()
+                    cursorShape: Qt.PointingHandCursor
+                }
+            }
+            Text {
+                id: checkBoxNote
+                anchors.verticalCenter : parent.verticalCenter
+                text: qsTr("Additionally delete all stored preferences and data", "when removing an account, this extra preference additionally deletes all cached data")
+                color: Style.main.text
+                font.pointSize: Style.dialog.fontSize * Style.pt
+
+                MouseArea {
+                    anchors.fill: parent
+                    onPressed: checkBoxWrapper.toggle()
+                    cursorShape: Qt.PointingHandCursor
+
+                    Accessible.role: Accessible.CheckBox
+                    Accessible.checked: checkBoxWrapper.isChecked
+                    Accessible.name: checkBoxNote.text
+                    Accessible.description: checkBoxNote.text
+                    Accessible.ignored: checkBoxNote.text == ""
+                    Accessible.onToggleAction: checkBoxWrapper.toggle()
+                    Accessible.onPressAction: checkBoxWrapper.toggle()
+                }
+            }
+        }
+
+        Rectangle { id: middleSep; color : "transparent"; width : Style.main.dummy; height : 2*Style.dialog.heightSeparator }
+
+        Row {
+            id: buttonRow
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Style.dialog.spacing
+            ButtonRounded {
+                id:buttonNo
+                color_main : Style.dialog.textBlue
+                fa_icon    : Style.fa.times
+                text       : qsTr("No")
+                onClicked  : root.hide()
+            }
+            ButtonRounded {
+                id: buttonYes
+                color_main  : Style.dialog.background
+                color_minor : Style.dialog.textBlue
+                isOpaque    : true
+                fa_icon     : Style.fa.check
+                text        : qsTr("Yes")
+                onClicked : {
+                    currentIndex=1
+                    root.confirmed()
+                }
+            }
+        }
+    }
+
+
+    Column {
+        Rectangle { color  : "transparent";  width  : Style.main.dummy; height : (root.height-answ.height)/2 }
+        AccessibleText {
+            id: answ
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold      : true
+            }
+            width: 3*parent.width/4
+            horizontalAlignment: Text.AlignHCenter
+            text : qsTr("Waiting...", "in general this displays between screens when processing data takes a long time")
+            wrapMode: Text.Wrap
+        }
+    }
+
+
+    states : [
+        State {
+            name: "quit"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Close ImportExport", "quits the application")
+                question     : qsTr("Are you sure you want to close the ImportExport?", "asked when user tries to quit the application")
+                note         : ""
+                answer       : qsTr("Closing ImportExport...", "displayed when user is quitting application")
+            }
+        },
+        State {
+            name: "logout"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : qsTr("Logout", "title of page that displays during account logout")
+                question     : ""
+                note         : ""
+                answer       : qsTr("Logging out...", "displays during account logout")
+            }
+        },
+        State {
+            name: "deleteUser"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Delete account", "title of page that displays during account deletion")
+                question     : qsTr("Are you sure you want to remove this account?", "displays during account deletion")
+                note         : ""
+                answer       : qsTr("Deleting ...", "displays during account deletion")
+            }
+        },
+        State {
+            name: "clearChain"
+            PropertyChanges {
+                target       : root
+                currentIndex : 0
+                title        : qsTr("Clear keychain", "title of page that displays during keychain clearing")
+                question     : qsTr("Are you sure you want to clear your keychain?", "displays during keychain clearing")
+                note         : qsTr("This will remove all accounts that you have added to the Import-Export app.", "displays during keychain clearing")
+                answer       : qsTr("Clearing the keychain ...", "displays during keychain clearing")
+            }
+        },
+        State {
+            name: "clearCache"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Clear cache", "title of page that displays during cache clearing")
+                question     : qsTr("Are you sure you want to clear your local cache?", "displays during cache clearing")
+                note         : qsTr("This will delete all of your stored preferences.", "displays during cache clearing")
+                answer       : qsTr("Clearing the cache ...", "displays during cache clearing")
+            }
+        },
+        State {
+            name: "checkUpdates"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : ""
+                question     : ""
+                note         : ""
+                answer       : qsTr("Checking for updates ...", "displays if user clicks the Check for Updates button in the Help tab")
+            }
+        },
+        State {
+            name: "internetCheck"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : ""
+                question     : ""
+                note         : ""
+                answer       : qsTr("Contacting server...", "displays if user clicks the Check for Updates button in the Help tab")
+            }
+        },
+        State {
+            name: "addressmode"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : ""
+                question     : qsTr("Do you want to continue?", "asked when the user changes between split and combined address mode")
+                note         : qsTr("Changing between split and combined address mode will require you to delete your account(s) from your email client and begin the setup process from scratch.", "displayed when the user changes between split and combined address mode")
+                answer       : qsTr("Configuring address mode for ", "displayed when the user changes between split and combined address mode") + root.input
+            }
+        },
+        State {
+            name: "toggleAutoStart"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                question     : ""
+                note         : ""
+                title        : ""
+                answer       : {
+                    var msgTurnOn = qsTr("Turning on automatic start of ImportExport...", "when the automatic start feature is selected")
+                    var msgTurnOff = qsTr("Turning off automatic start of ImportExport...", "when the automatic start feature is deselected")
+                    return go.isAutoStart==0 ? msgTurnOff  :  msgTurnOn
+                }
+            }
+        },
+        State {
+            name: "undef";
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                question     : ""
+                note         : ""
+                title        : ""
+                answer       : ""
+            }
+        }
+    ]
+
+
+    Shortcut {
+        sequence: StandardKey.Cancel
+        onActivated: root.hide()
+    }
+
+    Shortcut {
+        sequence: "Enter"
+        onActivated: root.confirmed()
+    }
+
+    onHide: {
+        checkBoxWrapper.isChecked = false
+        state = "undef"
+    }
+
+    onShow: {
+        // hide all other dialogs
+        winMain.dialogAddUser     .visible = false
+        winMain.dialogCredits     .visible = false
+        //winMain.dialogVersionInfo .visible = false
+        // dialogFirstStart should reappear again after closing global
+        root.visible = true
+    }
+
+
+
+    onConfirmed : {
+        if (state == "quit" || state == "instance exists" ) {
+            timer.interval = 1000
+        } else {
+            timer.interval = 300
+        }
+        answ.forceActiveFocus()
+        timer.start()
+    }
+
+    Connections {
+        target: timer
+        onTriggered: {
+            if ( state == "addressmode"     ) { go.switchAddressMode   (input) }
+            if ( state == "clearChain"      ) { go.clearKeychain       ()      }
+            if ( state == "clearCache"      ) { go.clearCache          ()      }
+            if ( state == "deleteUser"      ) { go.deleteAccount       (input, checkBoxWrapper.isChecked) }
+            if ( state == "logout"          ) { go.logoutAccount       (input) }
+            if ( state == "toggleAutoStart" ) { go.toggleAutoStart     ()      }
+            if ( state == "quit"            ) { Qt.quit                ()      }
+            if ( state == "instance exists" ) { Qt.quit                ()      }
+            if ( state == "checkUpdates"    ) { go.runCheckVersion     (true)  }
+        }
+    }
+
+    Keys.onPressed: {
+        if (event.key == Qt.Key_Enter) {
+            root.confirmed()
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/ExportStructure.qml

@@ -0,0 +1,149 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of export folders / labels
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color     : Style.exporting.background
+    radius    : Style.exporting.boxRadius
+    border {
+        color : Style.exporting.line
+        width : Style.dialog.borderInput
+    }
+    property bool hasItems: true
+
+
+    Text { // placeholder
+        visible: !root.hasItems
+        anchors.centerIn: parent
+        color: Style.main.textDisabled
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+        }
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        text: qsTr("No emails found for this address.","todo")
+    }
+
+
+    property string title  : ""
+
+    TextMetrics {
+        id: titleMetrics
+        text: root.title
+        elide: Qt.ElideMiddle
+        elideWidth: root.width - 4*Style.exporting.leftMargin
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: true
+        }
+    }
+
+    Rectangle {
+        id: header
+        anchors {
+            top: root.top
+            left: root.left
+        }
+        width  : root.width
+        height : Style.dialog.fontSize*3
+        color  : Style.transparent
+        Rectangle {
+            anchors.bottom: parent.bottom
+            color  : Style.exporting.line
+            height : Style.dialog.borderInput
+            width  : parent.width
+        }
+
+        Text {
+            anchors {
+                left           : parent.left
+                leftMargin     : 2*Style.exporting.leftMargin
+                verticalCenter : parent.verticalCenter
+            }
+            color: Style.dialog.text
+            font: titleMetrics.font
+            text: titleMetrics.elidedText
+        }
+    }
+
+
+    ListView {
+        id: listview
+        clip           : true
+        orientation    : ListView.Vertical
+        boundsBehavior : Flickable.StopAtBounds
+        model          : transferRules
+        cacheBuffer    : 10000
+
+        anchors {
+            left    : root.left
+            right   : root.right
+            bottom  : root.bottom
+            top     : header.bottom
+            margins : Style.dialog.borderInput
+        }
+
+        ScrollBar.vertical: ScrollBar {
+            /*
+             policy: ScrollBar.AsNeeded
+             background : Rectangle {
+                 color  : Style.exporting.sliderBackground
+                 radius : Style.exporting.boxRadius
+             }
+             contentItem : Rectangle {
+                 color         : Style.exporting.sliderForeground
+                 radius        : Style.exporting.boxRadius
+                 implicitWidth : Style.main.rightMargin / 3
+             }
+             */
+            anchors {
+                right: parent.right
+                rightMargin: Style.main.rightMargin/4
+            }
+            width: Style.main.rightMargin/3
+            Accessible.ignored: true
+        }
+
+        delegate: FolderRowButton {
+            property variant modelData: model
+            width      : root.width - 5*root.border.width
+            type       : modelData.type
+            folderIconColor  : modelData.iconColor
+            title      : modelData.name
+            isSelected : modelData.isActive
+            onClicked  : {
+                //console.log("Clicked", folderId, isSelected)
+                transferRules.setIsRuleActive(modelData.mboxID,!model.isActive)
+            }
+        }
+
+        section.property: "type"
+        section.delegate: FolderRowButton {
+            isSection  : true
+            width      : root.width - 5*root.border.width
+            title      : gui.folderTypeTitle(section)
+            isSelected : section == gui.enums.folderTypeLabel ? transferRules.isLabelGroupSelected : transferRules.isFolderGroupSelected
+            onClicked  : transferRules.setIsGroupActive(section,!isSelected)
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/FilterStructure.qml

@@ -0,0 +1,55 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Filter only selected folders or labels
+import QtQuick 2.8
+import QtQml.Models 2.2
+
+
+DelegateModel {
+    id: root
+    model         : structurePM
+    //filterOnGroup : root.folderType
+    //delegate      : root.delegate
+    groups        : [
+        DelegateModelGroup {name: gui.enums.folderTypeFolder ; includeByDefault: false},
+        DelegateModelGroup {name: gui.enums.folderTypeLabel  ; includeByDefault: false}
+    ]
+
+    function updateFilter() {
+        //console.log("FilterModelDelegate::UpdateFilter")
+        // filter
+        var rowCount = root.items.count;
+        for (var iItem = 0; iItem < rowCount; iItem++) {
+            var entry = root.items.get(iItem);
+            entry.inLabel = (
+                root.filterOnGroup        == gui.enums.folderTypeLabel &&
+                entry.model.folderType == gui.enums.folderTypeLabel
+            )
+            entry.inFolder = (
+                root.filterOnGroup        == gui.enums.folderTypeFolder &&
+                entry.model.folderType != gui.enums.folderTypeLabel
+            )
+            /*
+             if (entry.inFolder && entry.model.folderId == selectedIDs) {
+                 view.currentIndex = iItem
+             }
+             */
+            //console.log("::::update filter:::::", iItem, entry.model.folderName, entry.inFolder, entry.inLabel)
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/FolderRowButton.qml

@@ -0,0 +1,99 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Checkbox row for folder selection
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+AccessibleButton {
+    id: root
+
+    property bool   isSection  : false
+    property bool   isSelected : false
+    property string title      : "N/A"
+    property string type       : ""
+    property string folderIconColor  : Style.main.textBlue
+
+    height    : Style.exporting.rowHeight
+    padding   : 0.0
+    anchors {
+        horizontalCenter: parent.horizontalCenter
+    }
+
+    background: Rectangle {
+        color: isSection ? Style.exporting.background : Style.exporting.rowBackground
+        Rectangle { // line
+            anchors.bottom : parent.bottom
+            height         : Style.dialog.borderInput
+            width          : parent.width
+            color          : Style.exporting.background
+        }
+    }
+
+    contentItem: Rectangle {
+        color: "transparent"
+        id: content
+        Text {
+            id: checkbox
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : content.left
+                leftMargin     : Style.exporting.leftMargin * (root.type == gui.enums.folderTypeSystem   ? 1.0 : 2.0)
+            }
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+            color : isSelected ? Style.main.text : Style.main.textInactive
+            text  : (isSelected ? Style.fa.check_square_o : Style.fa.square_o )
+        }
+
+        Text { // icon
+            id: folderIcon
+            visible: !isSection
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : checkbox.left
+                leftMargin     : Style.dialog.fontSize + Style.exporting.leftMargin
+            }
+            color : root.type=="" ? Style.main.textBlue : root.folderIconColor
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+            text  : {
+                return gui.folderIcon(root.title.toLowerCase(), root.type)
+            }
+        }
+
+        Text {
+            text: root.title
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : isSection ? checkbox.left : folderIcon.left
+                leftMargin     : Style.dialog.fontSize + Style.exporting.leftMargin
+            }
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold: isSection
+            }
+            color: Style.exporting.text
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/HelpView.qml

@@ -0,0 +1,129 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List the settings
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+
+    // must have wrapper
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: parent.width
+        height: parent.height
+        color: Style.main.background
+
+        // content
+        Column {
+            anchors.horizontalCenter : parent.horizontalCenter
+
+
+            ButtonIconText {
+                id: manual
+                anchors.left: parent.left
+                text: qsTr("Setup Guide")
+                leftIcon.text  : Style.fa.book
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: go.openManual()
+            }
+
+            ButtonIconText {
+                id: updates
+                anchors.left: parent.left
+                text: qsTr("Check for Updates")
+                leftIcon.text  : Style.fa.refresh
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: {
+                    dialogGlobal.state="checkUpdates"
+                    dialogGlobal.show()
+                    dialogGlobal.confirmed()
+                }
+            }
+
+            Rectangle {
+                anchors.horizontalCenter : parent.horizontalCenter
+                height: Math.max (
+                    aboutText.height +
+                    Style.main.fontSize,
+                    wrapper.height - (
+                        2*manual.height +
+                        creditsLink.height +
+                        Style.main.fontSize
+                    )
+                )
+                width: wrapper.width
+                color : Style.transparent
+                Text {
+                    id: aboutText
+                    anchors {
+                        bottom: parent.bottom
+                        horizontalCenter: parent.horizontalCenter
+                    }
+                    color: Style.main.textDisabled
+                    horizontalAlignment: Qt.AlignHCenter
+                    font.family : Style.fontawesome.name
+                    text: "ProtonMail Import-Export app Version "+go.getBackendVersion()+"\n"+Style.fa.copyright + " 2020 Proton Technologies AG"
+                }
+            }
+
+            Row {
+                anchors.horizontalCenter : parent.horizontalCenter
+                spacing : Style.main.dummy
+
+                Text {
+                    id: creditsLink
+                    text  : qsTr("Credits", "link to click on to view list of credited libraries")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                            winMain.dialogCredits.show()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+
+
+                Text {
+                    id: releaseNotes
+                    text  : qsTr("Release notes", "link to click on to view release notes for this version of the app")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                            go.getLocalVersionInfo()
+                            winMain.dialogVersionInfo.show()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+            }
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/IEStyle.qml

@@ -0,0 +1,106 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Adjust Bridge Style
+
+import QtQuick 2.8
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+Item {
+    Component.onCompleted : {
+        //Style.refdpi = go.goos == "darwin" ? 86.0 : 96.0
+        Style.pt     = go.goos == "darwin" ? 93/Style.dpi : 80/Style.dpi
+
+        Style.main.background   = "#fff"
+        Style.main.text         = "#505061"
+        Style.main.textInactive = "#686876"
+        Style.main.line         = "#dddddd"
+        Style.main.width        = 884 * Style.px
+        Style.main.height       = 422 * Style.px
+        Style.main.leftMargin   = 25 * Style.px
+        Style.main.rightMargin  = 25 * Style.px
+
+        Style.title.background = Style.main.text
+        Style.title.text       = Style.main.background
+
+        Style.tabbar.background    = "#3D3A47"
+        Style.tabbar.rightButton   = "add account"
+        Style.tabbar.spacingButton = 45*Style.px
+
+        Style.accounts.backgroundExpanded = "#fafafa"
+        Style.accounts.backgroundAddrRow  = "#fff"
+        Style.accounts.leftMargin2        = Style.main.width/2
+        Style.accounts.leftMargin3        = 5.5*Style.main.width/8
+
+
+        Style.dialog.background   = "#fff"
+        Style.dialog.text         = Style.main.text
+        Style.dialog.line         = "#e2e2e2"
+        Style.dialog.fontSize     = 12 * Style.px
+        Style.dialog.heightInput  = 2.2*Style.dialog.fontSize
+        Style.dialog.heightButton = Style.dialog.heightInput
+        Style.dialog.borderInput  = 1 * Style.px
+
+        Style.bubble.background     = "#595966"
+        Style.bubble.paneBackground = "#454553"
+        Style.bubble.text           = "#fff"
+        Style.bubble.width          = 310 * Style.px
+        Style.bubble.widthPane      = 36  * Style.px
+        Style.bubble.iconSize       = 14  * Style.px
+
+
+        // colors:
+        // text: #515061
+        // tick: #686876
+        // blue icon: #9396cc
+        // row bck: #f8f8f9
+        // line: #ddddde or #e2e2e2
+        //
+        // slider bg: #e6e6e6
+        // slider fg: #515061
+        // info icon: #c3c3c8
+        // input border: #ebebeb
+        //
+        // bubble color: #595966
+        // bubble pane: #454553
+        // bubble text: #fff
+        //
+        // indent folder
+        //
+        // Dimensions:
+        // full width: 882px
+        // leftMargin: 25px
+        // rightMargin: 25px
+        // rightMargin: 25px
+        // middleSeparator: 69px
+        // width folders: 416px or (width - separators) /2
+        // width output: 346px or (width - separators) /2
+        //
+        // height from top to input begin: 78px
+        // heightSeparator: 27px
+        // height folder input: 26px
+        //
+        // buble width: 309px
+        // buble left pane icon: 14px
+        // buble left pane width: 36px or (2.5 icon width)
+        // buble height: 46px
+        // buble arrow height: 12px
+        // buble arrow width: 14px
+        // buble radius: 3-4px
+    }
+}

internal/frontend/qml/ImportExportUI/ImportDelegate.qml

@@ -0,0 +1,154 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color: Style.importing.rowBackground
+    height: 40
+    width: 300
+    property real leftMargin1 : folderIcon.x - root.x
+    property real leftMargin2 : selectFolder.x - root.x
+    property real nameWidth : {
+        var available = root.width
+        available -= rowPlacement.children.length * rowPlacement.spacing  // spacing between places
+        available -= 3*rowPlacement.leftPadding // left, and 2x right
+        available -= folderIcon.width
+        available -= arrowIcon.width
+        available -= dateRangeMenu.width
+        return available/3.3 // source folder label, target folder menu, target labels menu, and 0.3x label list
+    }
+    property real iconWidth : nameWidth*0.3
+
+    property bool isSourceSelected: isActive
+    property string lastTargetFolder: "6" // Archive
+    property string lastTargetLabels: "" // no flag by default
+
+    property string sourceID   : mboxID
+    property string sourceName : name
+
+    Rectangle {
+        id: line
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            bottom : parent.bottom
+        }
+        height : Style.main.border * 2
+        color  : Style.importing.rowLine
+    }
+
+    Row {
+        id: rowPlacement
+        spacing: Style.dialog.spacing
+        leftPadding: Style.dialog.spacing*2
+        anchors.verticalCenter : parent.verticalCenter
+
+        CheckBoxLabel {
+            id: checkBox
+            anchors.verticalCenter : parent.verticalCenter
+            checked: root.isSourceSelected
+
+            onClicked: root.toggleImport()
+        }
+
+        Text {
+            id: folderIcon
+            text : gui.folderIcon(root.sourceName, gui.enums.folderTypeFolder)
+            anchors.verticalCenter : parent.verticalCenter
+            color: root.isSourceSelected ? Style.main.text : Style.main.textDisabled
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            text : root.sourceName
+            width: nameWidth
+            elide: Text.ElideRight
+            anchors.verticalCenter : parent.verticalCenter
+            color: folderIcon.color
+            font.pointSize : Style.dialog.fontSize * Style.pt
+        }
+
+        Text {
+            id: arrowIcon
+            text : Style.fa.arrow_right
+            anchors.verticalCenter : parent.verticalCenter
+            color: Style.main.text
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        SelectFolderMenu {
+            id: selectFolder
+            sourceID: root.sourceID
+            targets: transferRules.targetFolders(root.sourceID)
+            width: nameWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+            onDoNotImport: root.toggleImport()
+            onImportToFolder: root.importToFolder(newTargetID)
+        }
+
+        SelectLabelsMenu {
+            sourceID: root.sourceID
+            targets: transferRules.targetLabels(root.sourceID)
+            width: nameWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+            onAddTargetLabel: { transferRules.addTargetID(sourceID, newTargetID) }
+            onRemoveTargetLabel: { transferRules.removeTargetID(sourceID, newTargetID) }
+        }
+
+        LabelIconList {
+            colorList: labelColors=="" ? [] : labelColors.split(";")
+            width: iconWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+        }
+
+        DateRangeMenu {
+            id: dateRangeMenu
+            sourceID: root.sourceID
+            sourceFromDate: fromDate
+            sourceToDate: toDate
+
+            enabled: root.isSourceSelected
+            anchors.verticalCenter : parent.verticalCenter
+
+            Component.onCompleted : dateRangeMenu.updateRange()
+        }
+    }
+
+
+    function importToFolder(newTargetID) {
+        transferRules.addTargetID(root.sourceID,newTargetID)
+    }
+
+    function toggleImport() {
+        transferRules.setIsRuleActive(root.sourceID, !root.isSourceSelected)
+    }
+}

internal/frontend/qml/ImportExportUI/ImportReport.qml

@@ -0,0 +1,216 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Import report modal
+import QtQuick 2.11
+import QtQuick.Controls 2.4
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color: "#aa101021"
+    visible: false
+
+    MouseArea { // disable bellow
+        anchors.fill: root
+        hoverEnabled: true
+    }
+
+    Rectangle {
+        id:background
+        color: Style.main.background
+        anchors {
+            fill         : root
+            topMargin    : Style.main.rightMargin
+            leftMargin   : 2*Style.main.rightMargin
+            rightMargin  : 2*Style.main.rightMargin
+            bottomMargin : 2.5*Style.main.rightMargin
+        }
+
+        ClickIconText {
+            anchors {
+                top     : parent.top
+                right   : parent.right
+                margins : .5* Style.main.rightMargin
+            }
+            iconText  : Style.fa.times
+            text      : ""
+            textColor : Style.main.textBlue
+            onClicked : root.hide()
+            Accessible.description : qsTr("Close dialog %1", "Click to exit modal.").arg(title.text)
+        }
+
+        Text {
+            id: title
+            text : qsTr("List of errors")
+            font {
+                pointSize: Style.dialog.titleSize * Style.pt
+            }
+            anchors {
+                top              : parent.top
+                topMargin        : 0.5*Style.main.rightMargin
+                horizontalCenter : parent.horizontalCenter
+            }
+        }
+
+        ListView {
+            id: errorView
+            anchors {
+                left    : parent.left
+                right   : parent.right
+                top     : title.bottom
+                bottom  : detailBtn.top
+                margins : Style.main.rightMargin
+            }
+
+            clip               : true
+            flickableDirection : Flickable.HorizontalAndVerticalFlick
+            contentWidth       : errorView.rWall
+            boundsBehavior     : Flickable.StopAtBounds
+
+            ScrollBar.vertical: ScrollBar {
+                anchors {
+                    right        : parent.right
+                    top          : parent.top
+                    rightMargin  : Style.main.rightMargin/4
+                    topMargin    : Style.main.rightMargin
+                }
+                width: Style.main.rightMargin/3
+                Accessible.ignored: true
+            }
+            ScrollBar.horizontal: ScrollBar {
+                anchors {
+                    bottom       : parent.bottom
+                    right        : parent.right
+                    bottomMargin : Style.main.rightMargin/4
+                    rightMargin  : Style.main.rightMargin
+                }
+                height: Style.main.rightMargin/3
+                Accessible.ignored: true
+            }
+
+
+
+            property real rW1   : 150 *Style.px
+            property real rW2   : 150 *Style.px
+            property real rW3   : 100 *Style.px
+            property real rW4   : 150 *Style.px
+            property real rW5   : 550 *Style.px
+            property real rWall : errorView.rW1+errorView.rW2+errorView.rW3+errorView.rW4+errorView.rW5
+            property real pH    : .5*Style.main.rightMargin
+
+            model    : errorList
+            delegate : Rectangle {
+                width  : Math.max(errorView.width, row.width)
+                height : row.height
+
+                Row {
+                    id: row
+
+                    spacing       : errorView.pH
+                    leftPadding   : errorView.pH
+                    rightPadding  : errorView.pH
+                    topPadding    : errorView.pH
+                    bottomPadding : errorView.pH
+
+                    ImportReportCell { width : errorView.rW1; text : mailSubject  }
+                    ImportReportCell { width : errorView.rW2; text : mailDate     }
+                    ImportReportCell { width : errorView.rW3; text : inputFolder  }
+                    ImportReportCell { width : errorView.rW4; text : mailFrom     }
+                    ImportReportCell { width : errorView.rW5; text : errorMessage }
+                }
+
+                Rectangle {
+                    color          : Style.main.line
+                    height         : .8*Style.px
+                    width          : parent.width
+                    anchors.left   : parent.left
+                    anchors.bottom : parent.bottom
+                }
+            }
+
+            headerPositioning: ListView.OverlayHeader
+            header: Rectangle {
+                height : viewHeader.height
+                width  : Math.max(errorView.width, viewHeader.width)
+                color  : Style.accounts.backgroundExpanded
+                z      : 2
+
+                Row {
+                    id: viewHeader
+
+                    spacing       : errorView.pH
+                    leftPadding   : errorView.pH
+                    rightPadding  : errorView.pH
+                    topPadding    : .5*errorView.pH
+                    bottomPadding : .5*errorView.pH
+
+                    ImportReportCell { width : errorView.rW1 ; text : qsTr ( "SUBJECT"   ); isHeader: true }
+                    ImportReportCell { width : errorView.rW2 ; text : qsTr ( "DATE/TIME" ); isHeader: true }
+                    ImportReportCell { width : errorView.rW3 ; text : qsTr ( "FOLDER"    ); isHeader: true }
+                    ImportReportCell { width : errorView.rW4 ; text : qsTr ( "FROM"      ); isHeader: true }
+                    ImportReportCell { width : errorView.rW5 ; text : qsTr ( "ERROR"     ); isHeader: true }
+                }
+
+                Rectangle {
+                    color          : Style.main.line
+                    height         : .8*Style.px
+                    width          : parent.width
+                    anchors.left   : parent.left
+                    anchors.bottom : parent.bottom
+                }
+            }
+        }
+
+        Rectangle {
+            anchors{
+                fill    : errorView
+                margins : -radius
+            }
+            radius : 2* Style.px
+            color  : Style.transparent
+            border {
+                width : Style.px
+                color : Style.main.line
+            }
+        }
+
+        ButtonRounded {
+            id: detailBtn
+            fa_icon    : Style.fa.file_text
+            text       : qsTr("Detailed file")
+            color_main : Style.dialog.textBlue
+            onClicked  : go.importLogFileName == "" ? go.openLogs() : go.openReport()
+
+            anchors {
+                bottom           : parent.bottom
+                bottomMargin     : 0.5*Style.main.rightMargin
+                horizontalCenter : parent.horizontalCenter
+            }
+        }
+    }
+
+
+    function show() {
+        root.visible = true
+    }
+
+    function hide() {
+        root.visible = false
+    }
+}

internal/frontend/qml/ImportExportUI/ImportReportCell.qml

@@ -0,0 +1,67 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Import report modal
+import QtQuick 2.11
+import QtQuick.Controls 2.4
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Rectangle {
+    id: root
+
+    property alias text      : cellText.text
+    property bool  isHeader  : false
+    property bool  isHovered : false
+    property bool  isWider   : cellText.contentWidth > root.width
+
+    width  : 20*Style.px
+    height : cellText.height
+    z      : root.isHovered ? 3 : 1
+    color  : Style.transparent
+
+    Rectangle {
+        anchors {
+            fill    : cellText
+            margins : -2*Style.px
+        }
+        color : root.isWider ? Style.main.background : Style.transparent
+        border {
+            color : root.isWider ? Style.main.textDisabled : Style.transparent
+            width : Style.px
+        }
+    }
+
+    Text {
+        id: cellText
+        color : root.isHeader  ? Style.main.textDisabled : Style.main.text
+        elide : root.isHovered ? Text.ElideNone          : Text.ElideRight
+        width : root.isHovered ? cellText.contentWidth   : root.width
+        font {
+            pointSize : Style.main.textSize * Style.pt
+            family    : Style.fontawesome.name
+        }
+    }
+
+    MouseArea {
+        anchors.fill : root
+        hoverEnabled : !root.isHeader
+        onEntered    : { root.isHovered = true  }
+        onExited     : { root.isHovered = false }
+    }
+}

internal/frontend/qml/ImportExportUI/ImportSourceButton.qml

@@ -0,0 +1,89 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Export dialog
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+
+Button {
+    id: root
+
+    width  : 200
+    height : icon.height + 4*tag.height
+    scale  : pressed ? 0.95 : 1.0
+
+    property string iconText : Style.fa.ban
+
+    background: Rectangle { color: "transparent" }
+
+    contentItem: Rectangle {
+        id: wrapper
+        color: "transparent"
+
+        Image {
+            id: icon
+            anchors {
+                bottom           : wrapper.bottom
+                bottomMargin     : tag.height*2.5
+                horizontalCenter : wrapper.horizontalCenter
+            }
+            fillMode : Image.PreserveAspectFit
+            width    : Style.main.fontSize * 7
+            mipmap   : true
+            source   : "images/"+iconText+".png"
+
+        }
+
+        Row {
+            spacing: Style.dialog.spacing
+            anchors {
+                bottom           : wrapper.bottom
+                horizontalCenter : wrapper.horizontalCenter
+            }
+
+            Text {
+                id: tag
+
+                text  : Style.fa.plus_circle
+                color : Qt.lighter( Style.dialog.textBlue, root.enabled ? 1.0 : 1.5)
+
+                font {
+                    family    : Style.fontawesome.name
+                    pointSize : Style.main.fontSize * Style.pt * 1.2
+                }
+            }
+
+            Text {
+                text  : root.text
+                color: tag.color
+
+                font {
+                    family    : tag.font.family
+                    pointSize : tag.font.pointSize
+                    weight    : Font.DemiBold
+                    underline : true
+                }
+            }
+        }
+    }
+}
+
+

internal/frontend/qml/ImportExportUI/ImportStructure.qml

@@ -0,0 +1,148 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    property string titleFrom
+    property string titleTo
+    property bool   hasItems: true
+
+    color : Style.transparent
+
+    Rectangle {
+        anchors.fill: root
+        radius : Style.dialog.radiusButton
+        color : Style.transparent
+        border {
+            color : Style.main.line
+            width : 1.5*Style.dialog.borderInput
+        }
+
+
+        Text { // placeholder
+            visible: !root.hasItems
+            anchors.centerIn: parent
+            color: Style.main.textDisabled
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+            }
+            horizontalAlignment: Text.AlignHCenter
+            verticalAlignment: Text.AlignVCenter
+            text: qsTr("No emails found for this source.","todo")
+        }
+    }
+
+    anchors {
+        left   : parent.left
+        right  : parent.right
+        top    : parent.top
+        bottom : parent.bottom
+
+        leftMargin   : Style.main.leftMargin
+        rightMargin  : Style.main.leftMargin
+        topMargin    : Style.main.topMargin
+        bottomMargin : Style.main.bottomMargin
+    }
+
+    ListView {
+        id: listview
+        clip           : true
+        orientation    : ListView.Vertical
+        boundsBehavior : Flickable.StopAtBounds
+        model          : transferRules
+        cacheBuffer    : 10000
+        delegate       : ImportDelegate {
+            width: root.width
+        }
+
+        anchors {
+            top: titleBox.bottom
+            bottom: root.bottom
+            left: root.left
+            right: root.right
+            margins : Style.dialog.borderInput
+            bottomMargin: Style.dialog.radiusButton
+        }
+
+        ScrollBar.vertical: ScrollBar {
+            anchors {
+                right: parent.right
+                rightMargin: Style.main.rightMargin/4
+            }
+            width: Style.main.rightMargin/3
+            Accessible.ignored: true
+        }
+    }
+
+    Rectangle {
+        id: titleBox
+        anchors {
+            top: parent.top
+            left: parent.left
+            right: parent.right
+        }
+        height: Style.main.fontSize *2
+        color : Style.transparent
+
+        Text {
+            id: textTitleFrom
+            anchors {
+                left: parent.left
+                verticalCenter: parent.verticalCenter
+                leftMargin: {
+                    if (listview.currentItem === null) return 0
+                    else return listview.currentItem.leftMargin1
+                }
+            }
+            text: "<b>"+qsTr("From:")+"</b> " + root.titleFrom
+            color: Style.main.text
+            width: listview.currentItem === null  ? 0 : (listview.currentItem.leftMargin2 - listview.currentItem.leftMargin1 - Style.dialog.spacing)
+            elide: Text.ElideMiddle
+        }
+
+        Text {
+            id: textTitleTo
+            anchors {
+                left: parent.left
+                verticalCenter: parent.verticalCenter
+                leftMargin: {
+                    if (listview.currentIndex<0) return root.width/3
+                    else return listview.currentItem.leftMargin2
+                }
+            }
+            text: "<b>"+qsTr("To:")+"</b> " + root.titleTo
+            color: Style.main.text
+        }
+    }
+
+    Rectangle {
+        id: line
+        anchors {
+            left  : titleBox.left
+            right : titleBox.right
+            top   : titleBox.bottom
+        }
+        height: Style.dialog.borderInput
+        color: Style.main.line
+    }
+}

internal/frontend/qml/ImportExportUI/InlineDateRange.qml

@@ -0,0 +1,129 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Row {
+    id: dateRange
+
+    property var   structure : transferRules
+    property string sourceID : "-1"
+
+    property alias allDates      : allDatesBox.checked
+    property alias inputDateFrom : inputDateFrom
+    property alias inputDateTo   : inputDateTo
+
+    property alias labelWidth: label.width
+
+    function getRange() {common.getRange()}
+    function applyRange() {common.applyRange()}
+
+    DateRangeFunctions {id:common}
+
+    spacing: Style.dialog.spacing*2
+
+    Text {
+        id: label
+        anchors.verticalCenter: parent.verticalCenter
+        text : qsTr("Date range")
+        font {
+            bold: true
+            family: Style.fontawesome.name
+            pointSize: Style.main.fontSize * Style.pt
+        }
+        color: Style.main.text
+    }
+
+    DateInput {
+        id: inputDateFrom
+        label: ""
+        anchors.verticalCenter: parent.verticalCenter
+        currentDate: new Date(0) // default epoch start
+        maxDate: inputDateTo.currentDate
+    }
+
+    Text {
+        text : Style.fa.arrows_h
+        anchors.verticalCenter: parent.verticalCenter
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        color: Style.main.text
+        font.family: Style.fontawesome.name
+    }
+
+    DateInput {
+        id: inputDateTo
+        label: ""
+        anchors.verticalCenter: parent.verticalCenter
+        currentDate: new Date() // default now
+        minDate: inputDateFrom.currentDate
+        isMaxDateToday: true
+    }
+
+    CheckBoxLabel {
+        id: allDatesBox
+        text                   : qsTr("All dates")
+        anchors.verticalCenter : parent.verticalCenter
+        checkedSymbol          : Style.fa.toggle_on
+        uncheckedSymbol        : Style.fa.toggle_off
+        uncheckedColor         : Style.main.textDisabled
+        symbolPointSize        : Style.dialog.iconSize * Style.pt * 1.1
+        spacing                : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: allDatesBox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: allDatesBox.symbolPointSize
+            }
+        }
+
+
+        Rectangle {
+            color: allDatesBox.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: allDatesBox.left
+                verticalCenter: allDatesBox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/InlineLabelSelect.qml

@@ -0,0 +1,227 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Row {
+    id: root
+    spacing: Style.dialog.spacing
+
+    property alias labelWidth : label.width
+
+    property string labelName     : ""
+    property string labelColor    : ""
+    property alias  labelSelected : masterLabelCheckbox.checked
+
+    Text {
+        id: label
+        text : qsTr("Add import label")
+        font {
+            bold: true
+            family: Style.fontawesome.name
+            pointSize: Style.main.fontSize * Style.pt
+        }
+        color: Style.main.text
+        anchors.verticalCenter: parent.verticalCenter
+    }
+
+    InfoToolTip {
+        info: qsTr( "When master import lablel is selected then all imported email will have this label.", "Tooltip text for master import label")
+        anchors.verticalCenter: parent.verticalCenter
+    }
+
+    CheckBoxLabel {
+        id: masterLabelCheckbox
+        text                   : ""
+        anchors.verticalCenter : parent.verticalCenter
+        checkedSymbol          : Style.fa.toggle_on
+        uncheckedSymbol        : Style.fa.toggle_off
+        uncheckedColor         : Style.main.textDisabled
+        symbolPointSize        : Style.dialog.iconSize * Style.pt * 1.1
+        spacing                : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: masterLabelCheckbox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: masterLabelCheckbox.symbolPointSize
+            }
+        }
+
+
+        Rectangle {
+            color: parent.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: masterLabelCheckbox.left
+                verticalCenter: masterLabelCheckbox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+
+    Rectangle {
+        // label
+        color  : Style.transparent
+        radius : Style.dialog.radiusButton
+        border {
+            color : Style.dialog.line
+            width : Style.dialog.borderInput
+        }
+        anchors.verticalCenter : parent.verticalCenter
+
+        scale: area.pressed ? 0.95 : 1
+
+        width: content.width
+        height: content.height
+
+
+        Row {
+            id: content
+
+            spacing   : Style.dialog.spacing
+            padding   : Style.dialog.spacing
+
+            anchors.verticalCenter: parent.verticalCenter
+
+            // label icon color
+            Text {
+                text: Style.fa.tag
+                color: root.labelSelected ? root.labelColor : Style.dialog.line
+                anchors.verticalCenter: parent.verticalCenter
+                font {
+                    family: Style.fontawesome.name
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+
+            TextMetrics {
+                id:labelMetrics
+                text: root.labelName
+                elide: Text.ElideRight
+                elideWidth:gui.winMain.width*0.303
+
+                font {
+                    pointSize: Style.main.fontSize * Style.pt
+                    family: Style.fontawesome.name
+                }
+            }
+
+            // label text
+            Text {
+                text: labelMetrics.elidedText
+                color: root.labelSelected ? Style.dialog.text : Style.dialog.line
+                font: labelMetrics.font
+                anchors.verticalCenter: parent.verticalCenter
+            }
+
+            // edit icon
+            Text {
+                text: Style.fa.edit
+                color: root.labelSelected ? Style.main.textBlue : Style.dialog.line
+                anchors.verticalCenter: parent.verticalCenter
+                font {
+                    family: Style.fontawesome.name
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+        }
+
+        MouseArea {
+            id: area
+            anchors.fill: parent
+            enabled: root.labelSelected
+            onClicked : {
+                if (!root.labelSelected) return
+                // NOTE: "createLater" is hack
+                winMain.popupFolderEdit.show(root.labelName, "createLater", root.labelColor, gui.enums.folderTypeLabel, "")
+            }
+        }
+    }
+
+    function reset(){
+        labelColor  = go.leastUsedColor()
+        labelName = qsTr("Imported", "default name of global label followed by date") + " " + gui.niceDateTime()
+        labelSelected=true
+    }
+
+    Connections {
+        target: winMain.popupFolderEdit
+
+        onEdited : {
+            if (newName!="") root.labelName = newName
+            if (newColor!="") root.labelColor = newColor
+        }
+    }
+
+
+    /*
+     SelectLabelsMenu {
+         id: labelMenu
+         width       : winMain.width/5
+         sourceID    : root.sourceID
+         selectedIDs : root.structure.getTargetLabelIDs(root.sourceID)
+         anchors.verticalCenter: parent.verticalCenter
+     }
+
+     LabelIconList {
+         id: iconList
+         selectedIDs : root.structure.getTargetLabelIDs(root.sourceID)
+         anchors.verticalCenter: parent.verticalCenter
+     }
+
+
+     Connections {
+         target: structureExternal
+         onDataChanged: {
+             iconList.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+             labelMenu.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+         }
+     }
+
+     Connections {
+         target: structurePM
+         onDataChanged:{
+             iconList.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+             labelMenu.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+         }
+     }
+     */
+}

internal/frontend/qml/ImportExportUI/LabelIconList.qml

@@ -0,0 +1,65 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of icons for selected folders
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import QtQml.Models 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    width: Style.main.fontSize * 2
+    height: metrics.height
+    property var colorList
+    color: "transparent"
+
+    DelegateModel {
+        id: selectedLabels
+        model     : colorList
+        delegate  : Text {
+            text  : metrics.text
+            font  : metrics.font
+            color : modelData
+        }
+    }
+
+    TextMetrics {
+        id: metrics
+        text: Style.fa.tag
+        font {
+            pointSize: Style.main.fontSize * Style.pt
+            family: Style.fontawesome.name
+        }
+    }
+
+    Row {
+        anchors.left : root.left
+        spacing : {
+            var n = Math.max(2,root.colorList.length)
+            var tagWidth = Math.max(1.0,metrics.width)
+            var space = Math.min(1*Style.px, (root.width - n*tagWidth)/(n-1)) // not more than 1px
+            space = Math.max(space,-tagWidth) // not less than tag width
+            return space
+        }
+
+        Repeater {
+            model: selectedLabels
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/MainWindow.qml

@@ -0,0 +1,475 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is main window
+
+import QtQuick 2.8
+import QtQuick.Window 2.2
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+
+// Main Window
+Window {
+    id                               : root
+    property alias tabbar            : tabbar
+    property alias viewContent       : viewContent
+    property alias viewAccount       : viewAccount
+    property alias dialogAddUser     : dialogAddUser
+    property alias dialogGlobal      : dialogGlobal
+    property alias dialogCredits     : dialogCredits
+    property alias dialogVersionInfo : dialogVersionInfo
+    property alias dialogUpdate      : dialogUpdate
+    property alias popupMessage      : popupMessage
+    property alias popupFolderEdit   : popupFolderEdit
+    property alias updateState       : infoBar.state
+    property alias dialogExport      : dialogExport
+    property alias dialogImport      : dialogImport
+    property alias addAccountTip     : addAccountTip
+    property int   heightContent     : height-titleBar.height
+
+    property real   innerWindowBorder   : go.goos=="darwin" ? 0 : Style.main.border
+
+    // main window appearance
+    width  : Style.main.width
+    height : Style.main.height
+    flags  : go.goos=="darwin" ? Qt.Window : Qt.Window | Qt.FramelessWindowHint
+    color: go.goos=="windows" ? Style.main.background : Style.transparent
+    title: go.programTitle
+
+    minimumWidth  : Style.main.width
+    minimumHeight : Style.main.height
+
+    property bool isOutdateVersion : root.updateState == "forceUpgrade"
+
+    property bool activeContent :
+    !dialogAddUser     .visible &&
+    !dialogCredits     .visible &&
+    !dialogVersionInfo .visible &&
+    !dialogGlobal      .visible &&
+    !dialogUpdate      .visible &&
+    !dialogImport      .visible &&
+    !dialogExport      .visible &&
+    !popupFolderEdit   .visible &&
+    !popupMessage      .visible
+
+    Accessible.role: Accessible.Grouping
+    Accessible.description: qsTr("Window %1").arg(title)
+    Accessible.name: Accessible.description
+
+    WindowTitleBar {
+        id: titleBar
+        window: root
+        visible: go.goos!="darwin"
+    }
+
+    Rectangle {
+        anchors {
+            top   : titleBar.bottom
+            left  : parent.left
+            right : parent.right
+            bottom : parent.bottom
+        }
+        color: Style.title.background
+    }
+
+    InformationBar {
+        id: infoBar
+        anchors {
+            left  : parent.left
+            right : parent.right
+            top   : titleBar.bottom
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+    }
+
+    TabLabels  {
+        id: tabbar
+        currentIndex : 0
+        enabled: root.activeContent
+        anchors {
+            top   : infoBar.bottom
+            right : parent.right
+            left  : parent.left
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+        model: [
+            { "title" : qsTr("Import-Export" , "title of tab that shows account list"             ), "iconText": Style.fa.home      },
+            { "title" : qsTr("Settings"      , "title of tab that allows user to change settings" ), "iconText": Style.fa.cogs      },
+            { "title" : qsTr("Help"          , "title of tab that shows the help menu"            ), "iconText": Style.fa.life_ring }
+        ]
+    }
+
+    // Content of tabs
+    StackLayout  {
+        id: viewContent
+        enabled: root.activeContent
+        // dimensions
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            top    : tabbar.bottom
+            bottom : parent.bottom
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+            bottomMargin: innerWindowBorder
+        }
+        // attributes
+        currentIndex : { return root.tabbar.currentIndex}
+        clip         : true
+        // content
+        AccountView  {
+            id           : viewAccount
+            onAddAccount : dialogAddUser.show()
+            model        : accountsModel
+            hasFooter    : false
+            delegate     : AccountDelegate {
+                row_width : viewContent.width
+            }
+        }
+        SettingsView { id: viewSettings; }
+        HelpView     { id: viewHelp;     }
+    }
+
+
+    // Bubble prevent action
+    Rectangle {
+        anchors {
+            left: parent.left
+            right: parent.right
+            top: titleBar.bottom
+            bottom: parent.bottom
+        }
+        visible: bubbleNote.visible
+        color: "#aa222222"
+        MouseArea {
+            anchors.fill: parent
+            hoverEnabled: true
+        }
+    }
+    BubbleNote {
+        id      : bubbleNote
+        visible : false
+        Component.onCompleted : {
+            bubbleNote.place(0)
+        }
+    }
+
+    BubbleNote {
+        id:addAccountTip
+        anchors.topMargin: viewAccount.separatorNoAccount - 2*Style.main.fontSize
+        text : qsTr("Click here to start", "on first launch, this is displayed above the Add Account button to tell the user what to do first")
+        state: (go.isFirstStart && viewAccount.numAccounts==0 && root.viewContent.currentIndex==0) ? "Visible" : "Invisible"
+        bubbleColor: Style.main.textBlue
+
+        Component.onCompleted : {
+            addAccountTip.place(-1)
+        }
+        enabled: false
+
+        states: [
+            State {
+                name: "Visible"
+                // hack: opacity 100% makes buttons dialog windows quit wrong color
+                PropertyChanges{target: addAccountTip; opacity: 0.999; visible: true}
+            },
+            State {
+                name: "Invisible"
+                PropertyChanges{target: addAccountTip; opacity: 0.0; visible: false}
+            }
+        ]
+
+        transitions: [
+            Transition {
+                from: "Visible"
+                to: "Invisible"
+
+                SequentialAnimation{
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "opacity"
+                        duration: 0
+                        easing.type: Easing.InOutQuad
+                    }
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "visible"
+                        duration: 0
+                    }
+                }
+            },
+            Transition {
+                from: "Invisible"
+                to: "Visible"
+                SequentialAnimation{
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "visible"
+                        duration: 300
+                    }
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "opacity"
+                        duration: 500
+                        easing.type: Easing.InOutQuad
+                    }
+                }
+            }
+        ]
+    }
+
+
+    // Dialogs
+
+    DialogAddUser {
+        id: dialogAddUser
+
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+        onCreateAccount: Qt.openUrlExternally("https://protonmail.com/signup")
+    }
+
+    DialogUpdate {
+        id: dialogUpdate
+
+        title: root.isOutdateVersion ?
+        qsTr("%1 is outdated", "title of outdate dialog").arg(go.programTitle):
+        qsTr("%1 update to %2", "title of update dialog").arg(go.programTitle).arg(go.newversion)
+        introductionText: {
+            if (root.isOutdateVersion) {
+                if (go.goos=="linux") {
+                    return qsTr('You are using an outdated version of our software.<br>
+                    Please dowload and install the latest version to continue using %1.<br><br>
+                    <a href="%2">%2</a>',
+                    "Message for force-update in Linux").arg(go.programTitle).arg(go.landingPage)
+                } else {
+                    return qsTr('You are using an outdated version of our software.<br>
+                    Please dowload and install the latest version to continue using %1.<br><br>
+                    You can continue with update or download and install the new version manually from<br><br>
+                    <a href="%2">%2</a>',
+                    "Message for force-update in Win/Mac").arg(go.programTitle).arg(go.landingPage)
+                }
+            } else {
+                if (go.goos=="linux") {
+                    return qsTr('A new version of %1 is available.<br>
+                    Check <a href="%2">release notes</a> to learn what is new in %3.<br>
+                    Use your package manager to update or download and install new the version manually from<br><br>
+                    <a href="%4">%4</a>',
+                    "Message for update in Linux").arg(go.programTitle).arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
+                } else {
+                    return qsTr('A new version of %1 is available.<br>
+                    Check <a href="%2">release notes</a> to learn what is new in %3.<br>
+                    You can continue with update or download and install new the version manually from<br><br>
+                    <a href="%4">%4</a>',
+                    "Message for update in Win/Mac").arg(go.programTitle).arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
+                }
+            }
+        }
+    }
+
+
+    DialogExport {
+        id: dialogExport
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+    }
+
+    DialogImport {
+        id: dialogImport
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+    }
+
+    Dialog {
+        id: dialogCredits
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+        title: qsTr("Credits", "title for list of credited libraries")
+
+        Credits { }
+    }
+
+    Dialog {
+        id: dialogVersionInfo
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+        property bool checkVersion : false
+        title: qsTr("Information about", "title of release notes page") + " v" + go.newversion
+        VersionInfo { }
+        onShow : {
+            // Hide information bar with olde version
+            if ( infoBar.state=="oldVersion" ) {
+                infoBar.state="upToDate"
+                dialogVersionInfo.checkVersion = true
+            }
+        }
+        onHide : {
+            // Reload current version based on online status
+            if (dialogVersionInfo.checkVersion) go.runCheckVersion(false)
+            dialogVersionInfo.checkVersion = false
+        }
+    }
+
+    DialogYesNo {
+        id: dialogGlobal
+        question : ""
+        answer   : ""
+        z: 100
+    }
+
+    PopupEditFolder {
+        id: popupFolderEdit
+        anchors {
+            left: parent.left
+            right: parent.right
+            top: infoBar.bottom
+            bottom: parent.bottom
+        }
+    }
+
+    // Popup
+    PopupMessage {
+        id: popupMessage
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            top    : infoBar.bottom
+            bottom : parent.bottom
+        }
+
+        onClickedNo: popupMessage.hide()
+        onClickedOkay: popupMessage.hide()
+        onClickedCancel: popupMessage.hide()
+        onClickedYes: {
+            if (popupMessage.text == gui.areYouSureYouWantToQuit) Qt.quit()
+        }
+    }
+
+    // resize
+    MouseArea { // bottom
+        id: resizeBottom
+        property int diff: 0
+        anchors {
+            bottom : parent.bottom
+            left   : parent.left
+            right  : parent.right
+        }
+        cursorShape: Qt.SizeVerCursor
+        height: Style.main.fontSize
+        onPressed: {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            resizeBottom.diff = root.height
+            resizeBottom.diff -= globPos.y
+        }
+        onMouseYChanged : {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            root.height =  Math.max(root.minimumHeight, globPos.y + resizeBottom.diff)
+        }
+    }
+
+    MouseArea { // right
+        id: resizeRight
+        property int diff: 0
+        anchors {
+            top    : titleBar.bottom
+            bottom : parent.bottom
+            right  : parent.right
+        }
+        cursorShape: Qt.SizeHorCursor
+        width: Style.main.fontSize/2
+        onPressed: {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            resizeRight.diff = root.width
+            resizeRight.diff -= globPos.x
+        }
+        onMouseXChanged : {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            root.width =  Math.max(root.minimumWidth, globPos.x + resizeRight.diff)
+        }
+    }
+
+    function showAndRise(){
+        go.loadAccounts()
+        root.show()
+        root.raise()
+        if (!root.active) {
+            root.requestActivate()
+        }
+    }
+
+    // Toggle window
+    function toggle() {
+        go.loadAccounts()
+        if (root.visible) {
+            if (!root.active) {
+                root.raise()
+                root.requestActivate()
+            } else {
+                root.hide()
+            }
+        } else {
+            root.show()
+            root.raise()
+        }
+    }
+
+    onClosing : {
+        close.accepted=false
+        if (
+            (dialogImport.visible && dialogImport.currentIndex == 4 && go.progress!=1) ||
+            (dialogExport.visible && dialogExport.currentIndex == 2 && go.progress!=1)
+        ) {
+            popupMessage.buttonOkay   .visible = false
+            popupMessage.buttonYes    .visible = false
+            popupMessage.buttonQuit   .visible = true
+            popupMessage.buttonCancel .visible = true
+            popupMessage.show ( gui.areYouSureYouWantToQuit )
+            return
+        }
+
+        close.accepted=true
+        go.processFinished()
+    }
+}

internal/frontend/qml/ImportExportUI/OutputFormat.qml

@@ -0,0 +1,84 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Column {
+    spacing: Style.dialog.spacing
+    property string checkedText : group.checkedButton.text
+
+    Text {
+        id: formatLabel
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: true
+        }
+        color: Style.dialog.text
+        text: qsTr("Select format of exported email:")
+
+        InfoToolTip {
+            info: qsTr("MBOX exports one file for each folder", "todo") + "\n" + qsTr("EML exports one file for each email", "todo")
+            anchors {
+                left: parent.right
+                leftMargin: Style.dialog.spacing
+                verticalCenter: parent.verticalCenter
+            }
+        }
+    }
+
+    Row {
+        spacing : Style.main.leftMargin
+        ButtonGroup {
+            id: group
+        }
+
+        Repeater {
+            model: [ "MBOX", "EML" ]
+            delegate : RadioButton {
+                id: radioDelegate
+                checked: modelData=="MBOX"
+                width: 5*Style.dialog.fontSize // hack due to bold
+                text: modelData
+                ButtonGroup.group: group
+                spacing: Style.main.spacing
+                indicator: Text {
+                    text  : radioDelegate.checked ? Style.fa.check_circle : Style.fa.circle_o
+                    color : radioDelegate.checked ? Style.main.textBlue   : Style.main.textInactive
+                    font {
+                        pointSize: Style.dialog.iconSize * Style.pt
+                        family: Style.fontawesome.name
+                    }
+                    anchors.verticalCenter: parent.verticalCenter
+                }
+                contentItem: Text {
+                    text: radioDelegate.text
+                    color: Style.main.text
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                        bold: checked
+                    }
+                    horizontalAlignment : Text.AlignHCenter
+                    verticalAlignment   : Text.AlignVCenter
+                    leftPadding: Style.dialog.iconSize
+                }
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/PopupEditFolder.qml

@@ -0,0 +1,311 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// popup to edit folders or labels
+import QtQuick 2.8
+import QtQuick.Controls 2.1
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+
+Rectangle {
+    id: root
+    visible: false
+    color: "#aa223344"
+
+    property string folderType    : gui.enums.folderTypeFolder
+    property bool   isFolder      : folderType == gui.enums.folderTypeFolder
+    property bool   isNew         : currentId == ""
+    property bool   isCreateLater : currentId == "createLater" // NOTE: "createLater" is hack because folder id should be base64 string
+
+    property string currentName   : ""
+    property string currentId     : ""
+    property string currentColor  : ""
+
+    property string sourceID      : ""
+    property string selectedColor : colorList[0]
+
+    property color textColor : Style.main.background
+    property color backColor : Style.bubble.paneBackground
+
+    signal edited(string newName, string newColor)
+
+
+
+
+    property var colorList : [ "#7272a7", "#8989ac", "#cf5858", "#cf7e7e", "#c26cc7", "#c793ca", "#7569d1", "#9b94d1", "#69a9d1", "#a8c4d5", "#5ec7b7", "#97c9c1", "#72bb75", "#9db99f", "#c3d261", "#c6cd97", "#e6c04c", "#e7d292", "#e6984c", "#dfb286" ]
+
+    MouseArea { // prevent action below aka modal: true
+        anchors.fill: parent
+        hoverEnabled: true
+    }
+
+    Rectangle {
+        id:background
+
+        anchors {
+            fill: root
+            leftMargin: winMain.width/6
+            topMargin: winMain.height/6
+            rightMargin: anchors.leftMargin
+            bottomMargin: anchors.topMargin
+        }
+
+        color: backColor
+        radius: Style.errorDialog.radius
+    }
+
+
+    Column { // content
+        anchors {
+            top              : background.top
+            horizontalCenter : background.horizontalCenter
+        }
+
+        topPadding    : Style.main.topMargin
+        bottomPadding : topPadding
+        spacing       : (background.height - title.height - inputField.height - view.height - buttonRow.height - topPadding - bottomPadding) / children.length
+
+        Text {
+            id: title
+
+            font.pointSize: Style.dialog.titleSize * Style.pt
+            color: textColor
+
+            text: {
+                if ( root.isFolder  && root.isNew  ) return qsTr ( "Create new folder" )
+                if ( !root.isFolder && root.isNew  ) return qsTr ( "Create new label"  )
+                if ( root.isFolder  && !root.isNew ) return qsTr ( "Edit folder %1"    ) .arg( root.currentName )
+                if ( !root.isFolder && !root.isNew ) return qsTr ( "Edit label %1"     ) .arg( root.currentName )
+            }
+
+            width  : parent.width
+            elide  : Text.ElideRight
+
+            horizontalAlignment : Text.AlignHCenter
+
+            Rectangle {
+                anchors {
+                    top: parent.bottom
+                    topMargin: Style.dialog.spacing
+                    horizontalCenter: parent.horizontalCenter
+                }
+                color: textColor
+                height: Style.main.borderInput
+            }
+        }
+
+        TextField {
+            id: inputField
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            width          : parent.width
+            height         : Style.dialog.button
+            rightPadding   : Style.dialog.spacing
+            leftPadding    : height + rightPadding
+            bottomPadding  : rightPadding
+            topPadding     : rightPadding
+            selectByMouse  : true
+            color          : textColor
+            font.pointSize : Style.dialog.fontSize * Style.pt
+
+            background: Rectangle {
+                color: backColor
+                border {
+                    color: textColor
+                    width: Style.dialog.borderInput
+                }
+
+                radius : Style.dialog.radiusButton
+
+                Text {
+                    anchors {
+                        left: parent.left
+                        verticalCenter: parent.verticalCenter
+                    }
+
+                    font {
+                        family: Style.fontawesome.name
+                        pointSize: Style.dialog.titleSize * Style.pt
+                    }
+
+                    text  : folderType == gui.enums.folderTypeFolder ? Style.fa.folder : Style.fa.tag
+                    color : root.selectedColor
+                    width : parent.height
+                    horizontalAlignment: Text.AlignHCenter
+                }
+
+                Rectangle {
+                    anchors {
+                        left: parent.left
+                        top: parent.top
+                        leftMargin: parent.height
+                    }
+                    width: parent.border.width/2
+                    height: parent.height
+                }
+            }
+        }
+
+
+        GridView {
+            id: view
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            model      : colorList
+            cellWidth  : 2*Style.dialog.titleSize
+            cellHeight : cellWidth
+            width      : 10*cellWidth
+            height     : 2*cellHeight
+
+            delegate: Rectangle {
+                width: view.cellWidth*0.8
+                height: width
+                radius: width/2
+                color: modelData
+
+                border {
+                    color: indicator.visible ? textColor : modelData
+                    width: 2*Style.px
+                }
+
+                Text {
+                    id: indicator
+                    anchors.centerIn : parent
+                    text: Style.fa.check
+                    color: textColor
+                    font {
+                        family: Style.fontawesome.name
+                        pointSize: Style.dialog.titleSize * Style.pt
+                    }
+                    visible: modelData == root.selectedColor
+                }
+
+                MouseArea {
+                    anchors.fill: parent
+                    onClicked : {
+                        root.selectedColor = modelData
+                    }
+                }
+            }
+        }
+
+        Row {
+            id: buttonRow
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            spacing: Style.main.leftMargin
+
+            ButtonRounded {
+                text: "Cancel"
+                color_main : textColor
+                onClicked :{
+                    root.hide()
+                }
+            }
+
+            ButtonRounded {
+                text: "Okay"
+                color_main: Style.dialog.background
+                color_minor: Style.dialog.textBlue
+                isOpaque: true
+                onClicked :{
+                    root.okay()
+                }
+            }
+        }
+    }
+
+    function hide() {
+        root.visible=false
+        root.currentId = ""
+        root.currentName = ""
+        root.currentColor = ""
+        root.folderType = ""
+        root.sourceID = ""
+        inputField.text = ""
+    }
+
+    function show(currentName, currentId, currentColor, folderType, sourceID) {
+        root.currentId = currentId
+        root.currentName = currentName
+        root.currentColor = currentColor=="" ? go.leastUsedColor() : currentColor
+        root.selectedColor =  root.currentColor
+        root.folderType = folderType
+        root.sourceID = sourceID
+
+        inputField.text = currentName
+        root.visible=true
+        //console.log(title.text , root.currentName, root.currentId, root.currentColor, root.folderType, root.sourceID) 
+    }
+
+    function okay() {
+        // check inpupts
+        if (inputField.text == "") {
+            go.notifyError(gui.enums.errFillFolderName)
+            return
+        }
+        if (colorList.indexOf(root.selectedColor)<0) {
+            go.notifyError(gui.enums.errSelectFolderColor)
+            return
+        }
+        var isLabel = root.folderType == gui.enums.folderTypeLabel
+        if (!isLabel && !root.isFolder){
+            console.log("Unknown folder type: ", root.folderType)
+            go.notifyError(gui.enums.errUpdateLabelFailed)
+            root.hide()
+            return
+        }
+
+        if (winMain.dialogImport.address == "") {
+            console.log("Unknown address", winMain.dialogImport.address)
+            go.onNotifyError(gui.enums.errUpdateLabelFailed)
+            root.hide()
+        }
+
+        if (root.isCreateLater) {
+            root.edited(inputField.text, root.selectedColor)
+            root.hide()
+            return
+        }
+
+
+        // TODO send request (as timer)
+        if (root.isNew) {
+            var isOK = go.createLabelOrFolder(winMain.dialogImport.address, inputField.text, root.selectedColor, isLabel, root.sourceID)
+            if (isOK) {
+                root.hide()
+            }
+        } else {
+            // TODO: check there was some change
+            go.updateLabelOrFolder(winMain.dialogImport.address, root.currentId, inputField.text, root.selectedColor)
+        }
+
+        // waiting for finish
+        // TODO: waiting wheel of doom
+        // TODO: on close add source to sourceID
+    }
+}

internal/frontend/qml/ImportExportUI/SelectFolderMenu.qml

@@ -0,0 +1,339 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is global combo box which can be adjusted to choose folder target, folder label or global label
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+ComboBox {
+    id: root
+    //fixme rounded
+    height: Style.main.fontSize*2 //fixme
+    property string folderType: gui.enums.folderTypeFolder
+    property string sourceID
+    property var targets
+    property bool isFolderType: root.folderType == gui.enums.folderTypeFolder
+    property bool below: true
+
+    signal doNotImport()
+    signal importToFolder(string newTargetID)
+    signal addTargetLabel(string newTargetID)
+    signal removeTargetLabel(string newTargetID)
+
+    leftPadding: Style.dialog.spacing
+
+    onDownChanged : {
+        root.below = popup.y>0
+    }
+
+    contentItem : Text {
+        id: boxText
+        verticalAlignment: Text.AlignVCenter
+        font {
+            family: Style.fontawesome.name
+            pointSize : Style.dialog.fontSize * Style.pt
+            bold: root.down
+        }
+        elide: Text.ElideRight
+        textFormat: Text.StyledText
+
+        text : root.displayText
+        color: !root.enabled ? Style.main.textDisabled : ( root.down ? Style.main.background : Style.main.text )
+    }
+
+    displayText: {
+        if (view.currentIndex >= 0) {
+            if (!root.isFolderType) return Style.fa.tags + " " + qsTr("Add/Remove labels")
+
+            var tgtName = view.currentItem.folderName
+            var tgtIcon = view.currentItem.folderIcon
+            var tgtColor = view.currentItem.folderColor
+
+            if (tgtIcon != Style.fa.folder_open) {
+                return tgtIcon + " " + tgtName
+            }
+
+            return '<font color="'+tgtColor+'">'+ tgtIcon + "</font> " + tgtName
+        }
+        if (root.isFolderType) return qsTr("No folder selected")
+        return qsTr("No labels selected")
+    }
+
+
+    background : RoundedRectangle {
+        fillColor         : root.down ? Style.main.textBlue : Style.transparent
+        strokeColor       : root.down ? fillColor : Style.main.line
+        radiusTopLeft     : root.down && !root.below ? 0 : Style.dialog.radiusButton
+        radiusBottomLeft  : root.down && root.below ? 0 : Style.dialog.radiusButton
+        radiusTopRight    : radiusTopLeft
+        radiusBottomRight : radiusBottomLeft
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked : {
+                if (root.down) root.popup.close()
+                else root.popup.open()
+            }
+        }
+    }
+
+    indicator : Text {
+        text: (root.down && root.below) || (!root.down && !root.below) ? Style.fa.chevron_up : Style.fa.chevron_down
+        anchors {
+            right: parent.right
+            verticalCenter: parent.verticalCenter
+            rightMargin: Style.dialog.spacing
+        }
+        font {
+            family : Style.fontawesome.name
+            pointSize : Style.dialog.fontSize * Style.pt
+        }
+        color: root.enabled && !root.down ? Style.main.textBlue : root.contentItem.color
+    }
+
+    // Popup row
+    delegate: Rectangle {
+        id: thisDelegate
+
+        height : Style.main.fontSize * 2
+        width  : selectNone.width
+
+        property bool isHovered: area.containsMouse
+
+        color: isHovered ? root.popup.hoverColor : root.popup.backColor
+
+        property bool isSelected : isActive
+        property string folderName: name
+        property string folderIcon: gui.folderIcon(name,type)
+        property string folderColor: (type == gui.enums.folderTypeLabel || type == gui.enums.folderTypeFolder) ? iconColor : root.popup.textColor
+
+        Text {
+            id: targetIcon
+            text: thisDelegate.folderIcon
+            color : thisDelegate.folderColor
+            anchors {
+                verticalCenter: parent.verticalCenter
+                left: parent.left
+                leftMargin: root.leftPadding
+            }
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            id: targetName
+
+
+            anchors {
+                verticalCenter: parent.verticalCenter
+                left: targetIcon.right
+                right: parent.right
+                leftMargin: Style.dialog.spacing
+                rightMargin: Style.dialog.spacing
+            }
+
+            text: thisDelegate.folderName
+            color : root.popup.textColor
+            elide: Text.ElideRight
+
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            id: targetIndicator
+            anchors {
+                right: parent.right
+                verticalCenter: parent.verticalCenter
+            }
+
+            text    : thisDelegate.isSelected ? Style.fa.check_square : Style.fa.square_o
+            visible : thisDelegate.isSelected || !root.isFolderType
+            color   : root.popup.textColor
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Rectangle {
+            id: line
+            anchors {
+                bottom : parent.bottom
+                left   : parent.left
+                right  : parent.right
+            }
+            height : Style.main.lineWidth
+            color  : Style.main.line
+        }
+
+        MouseArea {
+            id: area
+            anchors.fill: parent
+
+            onClicked: {
+                //console.log(" click delegate")
+                if (root.isFolderType) { // don't update if selected
+                    root.popup.close()
+                    if (!isActive) {
+                        root.importToFolder(mboxID)
+                    }
+                } else {
+                    if (isActive) {
+                        root.removeTargetLabel(mboxID)
+                    } else  {
+                        root.addTargetLabel(mboxID)
+                    }
+                }
+            }
+            hoverEnabled: true
+        }
+    }
+
+    popup : Popup {
+        y: root.height
+        width: root.width
+        modal: true
+        closePolicy: Popup.CloseOnPressOutside | Popup.CloseOnEscape
+        padding: Style.dialog.spacing
+
+        property var textColor  : Style.main.background
+        property var backColor  : Style.main.text
+        property var hoverColor : Style.main.textBlue
+
+        contentItem : Column {
+            // header
+            Rectangle {
+                id: selectNone
+                width: root.popup.width - 2*root.popup.padding
+                //height: root.isFolderType ? 2* Style.main.fontSize : 0
+                height: 2*Style.main.fontSize
+                color: area.containsMouse ? root.popup.hoverColor : root.popup.backColor
+                visible : root.isFolderType
+
+                Text {
+                    anchors {
+                        left           : parent.left
+                        leftMargin     : Style.dialog.spacing
+                        verticalCenter : parent.verticalCenter
+                    }
+                    text: root.isFolderType ? qsTr("Do not import") : ""
+                    color: root.popup.textColor
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                        bold: true
+                    }
+                }
+
+                Rectangle {
+                    id: line
+                    anchors {
+                        bottom : parent.bottom
+                        left   : parent.left
+                        right  : parent.right
+                    }
+                    height : Style.dialog.borderInput
+                    color  : Style.main.line
+                }
+
+                MouseArea {
+                    id: area
+                    anchors.fill: parent
+                    onClicked: {
+                        //console.log(" click no set")
+                        root.doNotImport()
+                        root.popup.close()
+                    }
+                    hoverEnabled: true
+                }
+            }
+
+            // scroll area
+            Rectangle {
+                width: selectNone.width
+                height: winMain.height/4
+                color: root.popup.backColor
+
+                ListView {
+                    id: view
+
+                    clip         : true
+                    anchors.fill : parent
+                    model        : root.targets
+                    delegate     : root.delegate
+
+                    currentIndex: view.model.selectedIndex
+                }
+            }
+
+            // footer
+            Rectangle {
+                id: addFolderOrLabel
+                width: selectNone.width
+                height: addButton.height + 3*Style.dialog.spacing
+                color: root.popup.backColor
+
+                Rectangle {
+                    anchors {
+                        top   : parent.top
+                        left  : parent.left
+                        right : parent.right
+                    }
+                    height : Style.dialog.borderInput
+                    color  : Style.main.line
+                }
+
+                ButtonRounded {
+                    id: addButton
+                    anchors.centerIn: addFolderOrLabel
+                    width: parent.width * 0.681
+
+                    fa_icon    : Style.fa.plus_circle
+                    text       : root.isFolderType ? qsTr("Create new folder") : qsTr("Create new label")
+                    color_main : root.popup.textColor
+                }
+
+                MouseArea {
+                    anchors.fill : parent
+
+                    onClicked  : {
+                        //console.log("click", addButton.text)
+                        var newName = name
+                        winMain.popupFolderEdit.show(newName, "", "", root.folderType, sourceID)
+                        root.popup.close()
+                    }
+                }
+            }
+        }
+
+        background : RoundedRectangle {
+            strokeColor       : root.popup.backColor
+            fillColor         : root.popup.backColor
+            radiusTopLeft     : root.below  ? 0 : Style.dialog.radiusButton
+            radiusBottomLeft  : !root.below ? 0 : Style.dialog.radiusButton
+            radiusTopRight    : radiusTopLeft
+            radiusBottomRight : radiusBottomLeft
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/SelectLabelsMenu.qml

@@ -0,0 +1,29 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+SelectFolderMenu {
+    id: root
+    folderType: gui.enums.folderTypeLabel
+}
+
+

internal/frontend/qml/ImportExportUI/SettingsView.qml

@@ -0,0 +1,148 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List the settings
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+
+    // must have wrapper
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: parent.width
+        height: parent.height
+        color: Style.main.background
+
+        // content
+        Column {
+            anchors.left : parent.left
+
+            ButtonIconText {
+                id: cacheKeychain
+                text: qsTr("Clear Keychain")
+                leftIcon.text  : Style.fa.chain_broken
+                rightIcon {
+                    text : qsTr("Clear")
+                    color: Style.main.text
+                    font {
+                        pointSize : Style.settings.fontSize * Style.pt
+                        underline : true
+                    }
+                }
+                onClicked: {
+                    dialogGlobal.state="clearChain"
+                    dialogGlobal.show()
+                }
+            }
+
+            ButtonIconText {
+                id: logs
+                anchors.left: parent.left
+                text: qsTr("Logs")
+                leftIcon.text  : Style.fa.align_justify
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: go.openLogs()
+            }
+
+            ButtonIconText {
+                id: bugreport
+                anchors.left: parent.left
+                text: qsTr("Report Bug")
+                leftIcon.text  : Style.fa.bug
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: bugreportWin.show()
+            }
+
+            /*
+
+             ButtonIconText {
+                 id: cacheClear
+                 text: qsTr("Clear Cache")
+                 leftIcon.text  : Style.fa.times
+                 rightIcon {
+                     text : qsTr("Clear")
+                     color: Style.main.text
+                     font {
+                         pointSize : Style.settings.fontSize * Style.pt
+                         underline : true
+                     }
+                 }
+                 onClicked: {
+                     dialogGlobal.state="clearCache"
+                     dialogGlobal.show()
+                 }
+             }
+
+
+             ButtonIconText {
+                 id: autoStart
+                 text: qsTr("Automatically Start Bridge")
+                 leftIcon.text  : Style.fa.rocket
+                 rightIcon {
+                     font.pointSize : Style.settings.toggleSize * Style.pt
+                     text  : go.isAutoStart!=0 ? Style.fa.toggle_on  : Style.fa.toggle_off
+                     color : go.isAutoStart!=0 ? Style.main.textBlue : Style.main.textDisabled
+                 }
+                 onClicked: {
+                     go.toggleAutoStart()
+                 }
+             }
+
+             ButtonIconText {
+                 id: advancedSettings
+                 property bool isAdvanced : !go.isDefaultPort
+                 text: qsTr("Advanced settings")
+                 leftIcon.text  : Style.fa.cogs
+                 rightIcon {
+                     font.pointSize : Style.settings.toggleSize * Style.pt
+                     text  : isAdvanced!=0 ? Style.fa.chevron_circle_up  : Style.fa.chevron_circle_right
+                     color : isAdvanced!=0 ? Style.main.textDisabled : Style.main.textBlue
+                 }
+                 onClicked: {
+                     isAdvanced = !isAdvanced
+                 }
+             }
+
+             ButtonIconText {
+                 id: changePort
+                 visible: advancedSettings.isAdvanced
+                 text: qsTr("Change SMTP/IMAP Ports")
+                 leftIcon.text  : Style.fa.plug
+                 rightIcon {
+                     text : qsTr("Change")
+                     color: Style.main.text
+                     font {
+                         pointSize : Style.settings.fontSize * Style.pt
+                         underline : true
+                     }
+                 }
+                 onClicked: {
+                     dialogChangePort.show()
+                 }
+             }
+             */
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/VersionInfo.qml

@@ -0,0 +1,125 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// credits
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: 2*Style.main.width/3
+        height: Style.main.height - 6*Style.dialog.titleSize
+        color: "transparent"
+
+        Flickable {
+            anchors.fill       : wrapper
+            contentWidth       : wrapper.width
+            contentHeight      : content.height
+            flickableDirection : Flickable.VerticalFlick
+            clip               : true
+
+
+            Column {
+                id: content
+                anchors.top: parent.top
+                anchors.horizontalCenter: parent.horizontalCenter
+                width: wrapper.width
+                spacing: 5
+
+                Text {
+                    visible: go.changelog != ""
+                    anchors {
+                        left: parent.left
+                    }
+                    font.bold: true
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    color: Style.main.text
+                    text: qsTr("Release notes:")
+                }
+
+                Text {
+                    anchors {
+                        left: parent.left
+                        leftMargin: Style.main.leftMargin
+                    }
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    width: wrapper.width - anchors.leftMargin
+                    wrapMode: Text.Wrap
+                    color: Style.main.text
+                    text: go.changelog
+                }
+
+                Text {
+                    visible: go.bugfixes != ""
+                    anchors {
+                        left: parent.left
+                    }
+                    font.bold: true
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    color: Style.main.text
+                    text: qsTr("Fixed bugs:")
+                }
+
+                Repeater {
+                    anchors.fill: parent
+                    model: go.bugfixes.split(";")
+
+                    Text {
+                        visible: go.bugfixes!=""
+                        anchors {
+                            left: parent.left
+                            leftMargin: Style.main.leftMargin
+                        }
+                        font.pointSize: Style.main.fontSize * Style.pt
+                        width: wrapper.width - anchors.leftMargin
+                        wrapMode: Text.Wrap
+                        color: Style.main.text
+                        text: modelData
+                    }
+                }
+
+                Rectangle{id:spacer; color:"transparent"; width:10; height: buttonClose.height}
+
+
+                ButtonRounded {
+                    id: buttonClose
+                    anchors.horizontalCenter: content.horizontalCenter
+                    text: "Close"
+                    onClicked: {
+                        root.parent.hide()
+                    }
+                }
+
+
+                AccessibleSelectableText {
+                    anchors.horizontalCenter: content.horizontalCenter
+                    font {
+                        pointSize : Style.main.fontSize * Style.pt
+                    }
+                    color: Style.main.textDisabled
+                    text: "\n Current: "+go.fullversion
+                }
+            }
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/qmldir

@@ -0,0 +1,31 @@
+module ImportExportUI
+AccountDelegate      1.0 AccountDelegate.qml
+Credits              1.0 Credits.qml
+DateBox              1.0 DateBox.qml
+DateInput            1.0 DateInput.qml
+DateRangeMenu        1.0 DateRangeMenu.qml
+DateRange            1.0 DateRange.qml
+DateRangeFunctions   1.0 DateRangeFunctions.qml
+DialogExport         1.0 DialogExport.qml
+DialogImport         1.0 DialogImport.qml
+DialogYesNo          1.0 DialogYesNo.qml
+ExportStructure      1.0 ExportStructure.qml
+FilterStructure      1.0 FilterStructure.qml
+FolderRowButton      1.0 FolderRowButton.qml
+HelpView             1.0 HelpView.qml
+IEStyle              1.0 IEStyle.qml
+ImportDelegate       1.0 ImportDelegate.qml
+ImportSourceButton   1.0 ImportSourceButton.qml
+ImportStructure      1.0 ImportStructure.qml
+ImportReport         1.0 ImportReport.qml
+ImportReportCell     1.0 ImportReportCell.qml
+InlineDateRange      1.0 InlineDateRange.qml
+InlineLabelSelect    1.0 InlineLabelSelect.qml
+LabelIconList        1.0 LabelIconList.qml
+MainWindow           1.0 MainWindow.qml
+OutputFormat         1.0 OutputFormat.qml
+PopupEditFolder      1.0 PopupEditFolder.qml
+SelectFolderMenu     1.0 SelectFolderMenu.qml
+SelectLabelsMenu     1.0 SelectLabelsMenu.qml
+SettingsView         1.0 SettingsView.qml
+VersionInfo          1.0 VersionInfo.qml

internal/frontend/qml/ProtonUI/AccountView.qml

@@ -87,7 +87,7 @@ Item {
                 Text { // Status
                     anchors {
                         left           : parent.left
-                        leftMargin     : Style.accounts.leftMargin2
+                        leftMargin     : viewContent.width/2
                         verticalCenter : parent.verticalCenter
                     }
                     visible: root.numAccounts!=0
@@ -99,7 +99,7 @@ Item {
                 Text { // Actions
                     anchors {
                         left           : parent.left
-                        leftMargin     : Style.accounts.leftMargin3
+                        leftMargin     : 5.5*viewContent.width/8
                         verticalCenter : parent.verticalCenter
                     }
                     visible: root.numAccounts!=0

internal/frontend/qml/ProtonUI/BubbleNote.qml

@@ -106,6 +106,7 @@ Rectangle {
             }
             MouseArea {
                 anchors.fill: mainText
+                cursorShape: mainText.hoveredLink ? Qt.PointingHandCursor : Qt.ArrowCursor
                 acceptedButtons: Qt.NoButton
             }
 

internal/frontend/qml/ProtonUI/BugReportWindow.qml

@@ -39,7 +39,7 @@ Window {
 
     color   : "transparent"
     flags   : Qt.Window | Qt.Dialog | Qt.FramelessWindowHint
-    title   : "ProtonMail Bridge - Bug report"
+    title   : "Bug report"
     visible : false
 
     WindowTitleBar {
@@ -327,6 +327,7 @@ Window {
 
     function show() {
         prefill()
+        description.focus=true
         root.visible=true
     }
 

internal/frontend/qml/ProtonUI/CheckBoxLabel.qml

@@ -30,10 +30,12 @@ CheckBox {
     property color uncheckedColor   : Style.main.textInactive
     property string checkedSymbol   : Style.fa.check_square_o
     property string uncheckedSymbol : Style.fa.square_o
+    property alias symbolPointSize  : symbol.font.pointSize
     background: Rectangle {
         color: Style.transparent
     }
     indicator: Text {
+        id: symbol
         text  : root.checked ? root.checkedSymbol : root.uncheckedSymbol
         color : root.checked ? root.checkedColor  : root.uncheckedColor
         font {

internal/frontend/qml/ProtonUI/DialogUpdate.qml

@@ -123,12 +123,12 @@ Dialog {
                 wrapMode: Text.Wrap
                 text: {
                     switch (go.progressDescription) {
-                        case 1: return qsTr("Checking the current version.")
-                        case 2: return qsTr("Downloading the update files.")
-                        case 3: return qsTr("Verifying the update files.")
-                        case 4: return qsTr("Unpacking the update files.")
-                        case 5: return qsTr("Starting the update.")
-                        case 6: return qsTr("Quitting the application.")
+                        case "1": return qsTr("Checking the current version.")
+                        case "2": return qsTr("Downloading the update files.")
+                        case "3": return qsTr("Verifying the update files.")
+                        case "4": return qsTr("Unpacking the update files.")
+                        case "5": return qsTr("Starting the update.")
+                        case "6": return qsTr("Quitting the application.")
                         default: return ""
                     }
                 }
@@ -220,7 +220,7 @@ Dialog {
     function clear() {
         root.hasError = false
         go.progress = 0.0
-        go.progressDescription = 0
+        go.progressDescription = "0"
     }
 
     function finished(hasError) {

internal/frontend/qml/ProtonUI/FileAndFolderSelect.qml

@@ -60,7 +60,7 @@ Row {
 
     FileDialog {
         id: pathDialog
-        title: root.title + ":"
+        title: root.title
         folder: shortcuts.home
         onAccepted: sanitizePath(pathDialog.fileUrl.toString())
         selectFolder: true

internal/frontend/qml/ProtonUI/InputField.qml

@@ -138,6 +138,11 @@ Column {
         }
     }
 
+    function clear() {
+        inputField.text = ""
+        rightIcon = ""
+    }
+
     function checkNonEmpty() {
         if (inputField.text == "") {
             rightIcon = Style.fa.exclamation_triangle
@@ -154,6 +159,17 @@ Column {
         if (root.isPassword) inputField.echoMode = TextInput.Password
     }
 
+    function checkIsANumber(){
+        if (/^\d+$/.test(inputField.text)) {
+            rightIcon = Style.fa.check_circle
+            return true
+        }
+        rightIcon = Style.fa.exclamation_triangle
+        root.placeholderText = ""
+        inputField.focus = true
+        return false
+    }
+
     function forceFocus() {
         inputField.forceActiveFocus()
     }

internal/frontend/qml/ProtonUI/PopupMessage.qml

@@ -23,9 +23,26 @@ import ProtonUI 1.0
 Rectangle {
     id: root
     color: Style.transparent
-    property alias text: message.text
+    property alias text         : message.text
+    property alias checkbox     : checkbox
+    property alias buttonQuit   : buttonQuit
+    property alias buttonOkay   : buttonOkay
+    property alias buttonYes    : buttonYes
+    property alias buttonNo     : buttonNo
+    property alias buttonRetry  : buttonRetry
+    property alias buttonSkip   : buttonSkip
+    property alias buttonCancel : buttonCancel
+    property alias msgWidth     : backgroundInp.width
+    property string msgID       : ""
     visible: false
 
+    signal clickedOkay()
+    signal clickedYes()
+    signal clickedNo()
+    signal clickedRetry()
+    signal clickedSkip()
+    signal clickedCancel()
+
     MouseArea { // prevent action below
         anchors.fill: parent
         hoverEnabled: true
@@ -58,14 +75,29 @@ Rectangle {
                 wrapMode: Text.Wrap
             }
 
-            ButtonRounded {
-                text        : qsTr("Okay", "todo")
-                isOpaque    : true
-                color_main  : Style.dialog.background
-                color_minor : Style.dialog.textBlue
-                onClicked   : root.hide()
+            CheckBoxLabel {
+                id: checkbox
+                text: ""
+                checked: false
+                visible: (text != "")
+                textColor : Style.errorDialog.text
+                checkedColor: Style.errorDialog.text
+                uncheckedColor: Style.errorDialog.text
                 anchors.horizontalCenter : parent.horizontalCenter
             }
+
+            Row {
+                spacing: Style.dialog.spacing
+                anchors.horizontalCenter : parent.horizontalCenter
+
+                ButtonRounded { id : buttonQuit   ; text : qsTr ( "Stop & quit", ""          )  ; onClicked : root.clickedYes    (  )  ; visible : false ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+                ButtonRounded { id : buttonNo     ; text : qsTr ( "No"     , "Button No"     )  ; onClicked : root.clickedNo     (  )  ; visible : false ; isOpaque : false ; color_main : Style.errorDialog.text ; color_minor : Style.transparent     ; }
+                ButtonRounded { id : buttonYes    ; text : qsTr ( "Yes"    , "Button Yes"    )  ; onClicked : root.clickedYes    (  )  ; visible : false ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+                ButtonRounded { id : buttonRetry  ; text : qsTr ( "Retry"  , "Button Retry"  )  ; onClicked : root.clickedRetry  (  )  ; visible : false ; isOpaque : false ; color_main : Style.errorDialog.text ; color_minor : Style.transparent     ; }
+                ButtonRounded { id : buttonSkip   ; text : qsTr ( "Skip"   , "Button Skip"   )  ; onClicked : root.clickedSkip   (  )  ; visible : false ; isOpaque : false ; color_main : Style.errorDialog.text ; color_minor : Style.transparent     ; }
+                ButtonRounded { id : buttonCancel ; text : qsTr ( "Cancel" , "Button Cancel" )  ; onClicked : root.clickedCancel (  )  ; visible : false ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+                ButtonRounded { id : buttonOkay   ; text : qsTr ( "Okay"   , "Button Okay"   )  ; onClicked : root.clickedOkay   (  )  ; visible : true  ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+            }
         }
     }
 
@@ -75,7 +107,16 @@ Rectangle {
     }
 
     function hide() {
-        root.state = "Okay"
         root.visible=false
+
+        root     .text = ""
+        checkbox .text = ""
+
+        buttonNo     .visible = false
+        buttonYes    .visible = false
+        buttonRetry  .visible = false
+        buttonSkip   .visible = false
+        buttonCancel .visible = false
+        buttonOkay   .visible = true
     }
 }

internal/frontend/qml/ProtonUI/RoundedRectangle.qml

@@ -0,0 +1,115 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import ProtonUI 1.0
+
+
+Rectangle {
+    id: root
+
+    color: Style.transparent
+
+    property color fillColor        : Style.main.background
+    property color strokeColor      : Style.main.line
+    property real strokeWidth       : Style.dialog.borderInput
+    property real radiusTopLeft     : Style.dialog.radiusButton
+    property real radiusBottomLeft  : Style.dialog.radiusButton
+    property real radiusTopRight    : Style.dialog.radiusButton
+    property real radiusBottomRight : Style.dialog.radiusButton
+
+    function paint() {
+        canvas.requestPaint()
+    }
+
+    onFillColorChanged         : root.paint()
+    onStrokeColorChanged       : root.paint()
+    onStrokeWidthChanged       : root.paint()
+    onRadiusTopLeftChanged     : root.paint()
+    onRadiusBottomLeftChanged  : root.paint()
+    onRadiusTopRightChanged    : root.paint()
+    onRadiusBottomRightChanged : root.paint()
+
+
+    Canvas {
+        id: canvas
+        anchors.fill: root
+
+        onPaint: {
+            var ctx = getContext("2d")
+            ctx.clearRect(0, 0, canvas.width, canvas.height);
+            ctx.fillStyle   = root.fillColor
+            ctx.strokeStyle = root.strokeColor
+            ctx.lineWidth   = root.strokeWidth
+            var dimensions = {
+                x: ctx.lineWidth,
+                y: ctx.lineWidth,
+                w: canvas.width-2*ctx.lineWidth,
+                h: canvas.height-2*ctx.lineWidth,
+            }
+            var radius = {
+                tl: root.radiusTopLeft,
+                tr: root.radiusTopRight,
+                bl: root.radiusBottomLeft,
+                br: root.radiusBottomRight,
+            }
+
+            root.roundRect(
+                ctx,
+                dimensions,
+                radius, true, true
+            )
+        }
+    }
+
+    // adapted from: https://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-on-html-canvas/3368118#3368118
+    function roundRect(ctx, dim, radius, fill, stroke) {
+        if (typeof stroke == 'undefined') {
+            stroke = true;
+        }
+        if (typeof radius === 'undefined') {
+            radius = 5;
+        }
+        if (typeof radius === 'number') {
+            radius = {tl: radius, tr: radius, br: radius, bl: radius};
+        } else {
+            var defaultRadius = {tl: 0, tr: 0, br: 0, bl: 0};
+            for (var side in defaultRadius) {
+                radius[side] = radius[side] || defaultRadius[side];
+            }
+        }
+        ctx.beginPath();
+        ctx.moveTo(dim.x + radius.tl, dim.y);
+        ctx.lineTo(dim.x + dim.w - radius.tr, dim.y);
+        ctx.quadraticCurveTo(dim.x + dim.w, dim.y, dim.x + dim.w, dim.y + radius.tr);
+        ctx.lineTo(dim.x + dim.w, dim.y + dim.h - radius.br);
+        ctx.quadraticCurveTo(dim.x + dim.w, dim.y + dim.h, dim.x + dim.w - radius.br, dim.y + dim.h);
+        ctx.lineTo(dim.x + radius.bl, dim.y + dim.h);
+        ctx.quadraticCurveTo(dim.x, dim.y + dim.h, dim.x, dim.y + dim.h - radius.bl);
+        ctx.lineTo(dim.x, dim.y + radius.tl);
+        ctx.quadraticCurveTo(dim.x, dim.y, dim.x + radius.tl, dim.y);
+        ctx.closePath();
+        if (fill) {
+            ctx.fill();
+        }
+        if (stroke) {
+            ctx.stroke();
+        }
+    }
+
+    Component.onCompleted: root.paint()
+}

internal/frontend/qml/ProtonUI/Style.qml

@@ -221,6 +221,31 @@ QtObject {
         property real  leftMargin3        : 30 * px
     }
 
+    property QtObject importing : QtObject {
+        property color rowBackground : dialog.background
+        property color rowLine       : dialog.line
+    }
+
+    property QtObject dropDownLight: QtObject {
+        property color background : dialog.background
+        property color text       : dialog.text
+        property color inactive   : dialog.line
+        property color highlight  : dialog.textBlue
+        property color separator  : dialog.line
+        property color line       : dialog.line
+        property bool  labelBold  : true
+    }
+
+    property QtObject dropDownDark : QtObject {
+        property color background : dialog.text
+        property color text       : dialog.background
+        property color inactive   : dialog.line
+        property color highlight  : dialog.textBlue
+        property color separator  : dialog.line
+        property color line       : dialog.line
+        property bool  labelBold  : true
+    }
+
     property int okInfoBar         : 0
     property int warnInfoBar       : 1
     property int warnBubbleMessage : 2

internal/frontend/qml/ProtonUI/WindowTitleBar.qml

@@ -23,7 +23,9 @@ import ProtonUI 1.0
 
 Rectangle {
     id: root
-    height: root.isDarwin ? Style.titleMacOS.height : Style.title.height
+    height: visible ? (
+        root.isDarwin ? Style.titleMacOS.height : Style.title.height
+    ) : 0
     color: "transparent"
     property bool isDarwin : (go.goos == "darwin")
     property QtObject window

internal/frontend/qml/ProtonUI/qmldir

@@ -23,6 +23,7 @@ InputField                   1.0 InputField.qml
 InstanceExistsWindow         1.0 InstanceExistsWindow.qml
 LogoHeader                   1.0 LogoHeader.qml
 PopupMessage                 1.0 PopupMessage.qml
+RoundedRectangle             1.0 RoundedRectangle.qml
 TabButton                    1.0 TabButton.qml
 TabLabels                    1.0 TabLabels.qml
 TextLabel                    1.0 TextLabel.qml

internal/frontend/qml/tst_Gui.qml

@@ -110,7 +110,7 @@ Window {
         ListElement { title: "Internet off"   }
         ListElement { title: "NeedUpdate"     }
         ListElement { title: "UpToDate"       }
-        ListElement { title: "ForceUpdate"   }
+        ListElement { title: "ForceUpdate"    }
         ListElement { title: "Linux"          }
         ListElement { title: "Windows"        }
         ListElement { title: "Macos"          }
@@ -122,6 +122,7 @@ Window {
         ListElement { title: "Minimize this"  }
         ListElement { title: "SendAlertPopup" }
         ListElement { title: "TLSCertError"   }
+        ListElement { title: "IMAPCertError"  }
     }
 
     ListView {
@@ -208,6 +209,9 @@ Window {
                     case "TLSCertError" :
                     go.showCertIssue()
                     break;
+                    case "IMAPCertError" :
+                    go.showIMAPCertTroubleshoot()
+                    break;
                     default :
                     console.log("Not implemented " + data)
                 }
@@ -310,6 +314,7 @@ Window {
         signal failedAutostartCode(string code)
 
         signal showCertIssue()
+        signal showIMAPCertTroubleshoot()
 
         signal updateFinished(bool hasError)
 

internal/frontend/qt-common/Makefile.local

@@ -0,0 +1,6 @@
+clean:
+	rm -f moc.cpp
+	rm -f moc.go
+	rm -f moc.h
+	rm -f moc_cgo*.go
+	rm -f moc_moc.h

internal/frontend/qt-common/account_model.go

@@ -0,0 +1,236 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+import (
+	"fmt"
+	"github.com/therecipe/qt/core"
+)
+
+// AccountInfo is an element of model. It contains all data for one account and
+// it's aliases
+type AccountInfo struct {
+	core.QObject
+
+	_ string `property:"account"`
+	_ string `property:"userID"`
+	_ string `property:"status"`
+	_ string `property:"hostname"`
+	_ string `property:"password"`
+	_ string `property:"security"`
+	_ int    `property:"portSMTP"`
+	_ int    `property:"portIMAP"`
+	_ string `property:"aliases"`
+	_ bool   `property:"isExpanded"`
+	_ bool   `property:"isCombinedAddressMode"`
+}
+
+// Constants for AccountsModel property map
+const (
+	Account = int(core.Qt__UserRole) + 1<<iota
+	UserID
+	Status
+	Hostname
+	Password
+	Security
+	PortIMAP
+	PortSMTP
+	Aliases
+	IsExpanded
+	IsCombinedAddressMode
+)
+
+// Registration of new metatype before creating instance
+// NOTE: check it is run once per program. write a log
+func init() {
+	AccountInfo_QRegisterMetaType()
+}
+
+// AccountModel for providing container of accounts information to QML.
+// QML ListView connects the model from Go and it shows item (accounts) information.
+// Copied and edited from `github.com/therecipe/qt/internal/examples/sailfish/listview`.
+type AccountsModel struct {
+	core.QAbstractListModel
+
+	// QtObject Constructor
+	_ func() `constructor:"init"`
+
+	// List of item properties.
+	// All available item properties are inside the map.
+	_ map[int]*core.QByteArray `property:"roles"`
+
+	// The data storage.
+	// The slice with all accounts. It is not accessed directly but using `data(index,role)`.
+	_ []*AccountInfo `property:"accounts"`
+
+	// Method for adding account.
+	_ func(*AccountInfo) `slot:"addAccount"`
+
+	// Method for retrieving account.
+	_ func(row int) *AccountInfo `slot:"get"`
+
+	// Method for login/logout the account.
+	_ func(row int) `slot:"toggleIsAvailable"`
+
+	// Method for removing account from list.
+	_ func(row int) `slot:"removeAccount"`
+
+	_ int `property:"count"`
+}
+
+// init is called by C constructor. It creates the map for item properties and
+// connects the methods.
+func (s *AccountsModel) init() {
+	s.SetRoles(map[int]*core.QByteArray{
+		Account:               NewQByteArrayFromString("account"),
+		UserID:                NewQByteArrayFromString("userID"),
+		Status:                NewQByteArrayFromString("status"),
+		Hostname:              NewQByteArrayFromString("hostname"),
+		Password:              NewQByteArrayFromString("password"),
+		Security:              NewQByteArrayFromString("security"),
+		PortIMAP:              NewQByteArrayFromString("portIMAP"),
+		PortSMTP:              NewQByteArrayFromString("portSMTP"),
+		Aliases:               NewQByteArrayFromString("aliases"),
+		IsExpanded:            NewQByteArrayFromString("isExpanded"),
+		IsCombinedAddressMode: NewQByteArrayFromString("isCombinedAddressMode"),
+	})
+	// Basic QAbstractListModel methods.
+	s.ConnectData(s.data)
+	s.ConnectRowCount(s.rowCount)
+	s.ConnectColumnCount(s.columnCount)
+	s.ConnectRoleNames(s.roleNames)
+	// Custom AccountModel methods.
+	s.ConnectGet(s.get)
+	s.ConnectAddAccount(s.addAccount)
+	s.ConnectToggleIsAvailable(s.toggleIsAvailable)
+	s.ConnectRemoveAccount(s.removeAccount)
+}
+
+// get returns account info pointer or create new empy if index is out of
+// range.
+func (s *AccountsModel) get(index int) *AccountInfo {
+	if index < 0 || index >= len(s.Accounts()) {
+		return NewAccountInfo(nil)
+	}
+	return s.Accounts()[index]
+}
+
+// data return value for index and property
+func (s *AccountsModel) data(index *core.QModelIndex, property int) *core.QVariant {
+	if !index.IsValid() {
+		return core.NewQVariant()
+	}
+
+	if index.Row() >= len(s.Accounts()) {
+		return core.NewQVariant()
+	}
+
+	var accountInfo = s.Accounts()[index.Row()]
+
+	switch property {
+	case Account:
+		return NewQVariantString(accountInfo.Account())
+	case UserID:
+		return NewQVariantString(accountInfo.UserID())
+	case Status:
+		return NewQVariantString(accountInfo.Status())
+	case Hostname:
+		return NewQVariantString(accountInfo.Hostname())
+	case Password:
+		return NewQVariantString(accountInfo.Password())
+	case Security:
+		return NewQVariantString(accountInfo.Security())
+	case PortIMAP:
+		return NewQVariantInt(accountInfo.PortIMAP())
+	case PortSMTP:
+		return NewQVariantInt(accountInfo.PortSMTP())
+	case Aliases:
+		return NewQVariantString(accountInfo.Aliases())
+	case IsExpanded:
+		return NewQVariantBool(accountInfo.IsExpanded())
+	case IsCombinedAddressMode:
+		return NewQVariantBool(accountInfo.IsCombinedAddressMode())
+	default:
+		return core.NewQVariant()
+	}
+}
+
+// rowCount returns the dimension of model: number of rows is equivalent to number of items in list.
+func (s *AccountsModel) rowCount(parent *core.QModelIndex) int {
+	return len(s.Accounts())
+}
+
+// columnCount returns the dimension of model: AccountsModel has only one column.
+func (s *AccountsModel) columnCount(parent *core.QModelIndex) int {
+	return 1
+}
+
+// roleNames returns the names of available item properties.
+func (s *AccountsModel) roleNames() map[int]*core.QByteArray {
+	return s.Roles()
+}
+
+// addAccount is connected to the addAccount slot.
+func (s *AccountsModel) addAccount(accountInfo *AccountInfo) {
+	s.BeginInsertRows(core.NewQModelIndex(), len(s.Accounts()), len(s.Accounts()))
+	s.SetAccounts(append(s.Accounts(), accountInfo))
+	s.SetCount(len(s.Accounts()))
+	s.EndInsertRows()
+}
+
+// toggleIsAvailable is connected to toggleIsAvailable slot.
+func (s *AccountsModel) toggleIsAvailable(row int) {
+	var accountInfo = s.Accounts()[row]
+	currentStatus := accountInfo.Status()
+	if currentStatus == "active" {
+		accountInfo.SetStatus("disabled")
+	} else if currentStatus == "disabled" {
+		accountInfo.SetStatus("active")
+	} else {
+		accountInfo.SetStatus("error")
+	}
+	var pIndex = s.Index(row, 0, core.NewQModelIndex())
+	s.DataChanged(pIndex, pIndex, []int{Status})
+}
+
+// removeAccount is connected to removeAccount slot.
+func (s *AccountsModel) removeAccount(row int) {
+	s.BeginRemoveRows(core.NewQModelIndex(), row, row)
+	s.SetAccounts(append(s.Accounts()[:row], s.Accounts()[row+1:]...))
+	s.SetCount(len(s.Accounts()))
+	s.EndRemoveRows()
+}
+
+// Clear removes all items in model.
+func (s *AccountsModel) Clear() {
+	s.BeginRemoveRows(core.NewQModelIndex(), 0, len(s.Accounts()))
+	s.SetAccounts(s.Accounts()[0:0])
+	s.SetCount(len(s.Accounts()))
+	s.EndRemoveRows()
+}
+
+// Dump prints the content of account models to console.
+func (s *AccountsModel) Dump() {
+	fmt.Printf("Dimensions rows %d cols %d\n", s.rowCount(nil), s.columnCount(nil))
+	for iAcc := 0; iAcc < s.rowCount(nil); iAcc++ {
+		var accountInfo = s.Accounts()[iAcc]
+		fmt.Printf("  %d. %s\n", iAcc, accountInfo.Account())
+	}
+}

internal/frontend/qt-common/accounts.go

@@ -0,0 +1,259 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+
+	"github.com/ProtonMail/proton-bridge/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/preferences"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/keychain"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+)
+
+// QMLer sends signals to GUI
+type QMLer interface {
+	ProcessFinished()
+	NotifyHasNoKeychain()
+	SetConnectionStatus(bool)
+	SetIsRestarting(bool)
+	SetAddAccountWarning(string, int)
+	NotifyBubble(int, string)
+	EmitEvent(string, string)
+	Quit()
+
+	CanNotReachAPI() string
+	WrongMailboxPassword() string
+}
+
+// Accounts holds functionality of users
+type Accounts struct {
+	Model *AccountsModel
+	qml   QMLer
+	um    types.UserManager
+	prefs *config.Preferences
+
+	authClient pmapi.Client
+	auth       *pmapi.Auth
+
+	LatestUserID string
+	accountMutex sync.Mutex
+}
+
+// SetupAccounts will create Model and set QMLer and UserManager
+func (a *Accounts) SetupAccounts(qml QMLer, um types.UserManager) {
+	a.Model = NewAccountsModel(nil)
+	a.qml = qml
+	a.um = um
+}
+
+// LoadAccounts refreshes the current account list in GUI
+func (a *Accounts) LoadAccounts() {
+	a.accountMutex.Lock()
+	defer a.accountMutex.Unlock()
+
+	a.Model.Clear()
+
+	users := a.um.GetUsers()
+
+	// If there are no active accounts.
+	if len(users) == 0 {
+		log.Info("No active accounts")
+		return
+	}
+	for _, user := range users {
+		accInfo := NewAccountInfo(nil)
+		username := user.Username()
+		if username == "" {
+			username = user.ID()
+		}
+		accInfo.SetAccount(username)
+
+		// Set status.
+		if user.IsConnected() {
+			accInfo.SetStatus("connected")
+		} else {
+			accInfo.SetStatus("disconnected")
+		}
+
+		// Set login info.
+		accInfo.SetUserID(user.ID())
+		accInfo.SetHostname(bridge.Host)
+		accInfo.SetPassword(user.GetBridgePassword())
+		if a.prefs != nil {
+			accInfo.SetPortIMAP(a.prefs.GetInt(preferences.IMAPPortKey))
+			accInfo.SetPortSMTP(a.prefs.GetInt(preferences.SMTPPortKey))
+		}
+
+		// Set aliases.
+		accInfo.SetAliases(strings.Join(user.GetAddresses(), ";"))
+		accInfo.SetIsExpanded(user.ID() == a.LatestUserID)
+		accInfo.SetIsCombinedAddressMode(user.IsCombinedAddressMode())
+
+		a.Model.addAccount(accInfo)
+	}
+
+	// Updated can clear.
+	a.LatestUserID = ""
+}
+
+// ClearCache signal to remove all DB files
+func (a *Accounts) ClearCache() {
+	defer a.qml.ProcessFinished()
+	if err := a.um.ClearData(); err != nil {
+		log.Error("While clearing cache: ", err)
+	}
+	// Clearing data removes everything (db, preferences, ...)
+	// so everything has to be stopped and started again.
+	a.qml.SetIsRestarting(true)
+	a.qml.Quit()
+}
+
+// ClearKeychain signal remove all accounts from keychains
+func (a *Accounts) ClearKeychain() {
+	defer a.qml.ProcessFinished()
+	for _, user := range a.um.GetUsers() {
+		if err := a.um.DeleteUser(user.ID(), false); err != nil {
+			log.Error("While deleting user: ", err)
+			if err == keychain.ErrNoKeychainInstalled { // Probably not needed anymore.
+				a.qml.NotifyHasNoKeychain()
+			}
+		}
+	}
+}
+
+// LogoutAccount signal to remove account
+func (a *Accounts) LogoutAccount(iAccount int) {
+	defer a.qml.ProcessFinished()
+	userID := a.Model.get(iAccount).UserID()
+	user, err := a.um.GetUser(userID)
+	if err != nil {
+		log.Error("While logging out ", userID, ": ", err)
+		return
+	}
+	if err := user.Logout(); err != nil {
+		log.Error("While logging out ", userID, ": ", err)
+	}
+}
+
+func (a *Accounts) showLoginError(err error, scope string) bool {
+	if err == nil {
+		a.qml.SetConnectionStatus(true) // If we are here connection is ok.
+		return false
+	}
+	log.Warnf("%s: %v", scope, err)
+	if err == pmapi.ErrAPINotReachable {
+		a.qml.SetConnectionStatus(false)
+		SendNotification(a.qml, TabAccount, a.qml.CanNotReachAPI())
+		a.qml.ProcessFinished()
+		return true
+	}
+	a.qml.SetConnectionStatus(true) // If we are here connection is ok.
+	if err == pmapi.ErrUpgradeApplication {
+		a.qml.EmitEvent(events.UpgradeApplicationEvent, "")
+		return true
+	}
+	a.qml.SetAddAccountWarning(err.Error(), -1)
+	return true
+}
+
+// Login signal returns:
+// -1: when error occurred
+//  0: when no 2FA and no MBOX
+//  1: when has 2FA
+//  2: when has no 2FA but have MBOX
+func (a *Accounts) Login(login, password string) int {
+	var err error
+	a.authClient, a.auth, err = a.um.Login(login, password)
+	if a.showLoginError(err, "login") {
+		return -1
+	}
+	if a.auth.HasTwoFactor() {
+		return 1
+	}
+	if a.auth.HasMailboxPassword() {
+		return 2
+	}
+	return 0 // No 2FA, no mailbox password.
+}
+
+// Auth2FA returns:
+//  -1 : error (use SetAddAccountWarning to show message)
+//   0 : single password mode
+//   1 : two password mode
+func (a *Accounts) Auth2FA(twoFacAuth string) int {
+	var err error
+	if a.auth == nil || a.authClient == nil {
+		err = fmt.Errorf("missing authentication in auth2FA %p %p", a.auth, a.authClient)
+	} else {
+		err = a.authClient.Auth2FA(twoFacAuth, a.auth)
+	}
+
+	if a.showLoginError(err, "auth2FA") {
+		return -1
+	}
+
+	if a.auth.HasMailboxPassword() {
+		return 1 // Ask for mailbox password.
+	}
+	return 0 // One password.
+}
+
+// AddAccount signal to add an account. It should close login modal
+// ProcessFinished if ok.
+func (a *Accounts) AddAccount(mailboxPassword string) int {
+	if a.auth == nil || a.authClient == nil {
+		log.Errorf("Missing authentication in addAccount %p %p", a.auth, a.authClient)
+		a.qml.SetAddAccountWarning(a.qml.WrongMailboxPassword(), -2)
+		return -1
+	}
+
+	user, err := a.um.FinishLogin(a.authClient, a.auth, mailboxPassword)
+	if err != nil {
+		log.WithError(err).Error("Login was unsuccessful")
+		a.qml.SetAddAccountWarning("Failure: "+err.Error(), -2)
+		return -1
+	}
+
+	a.LatestUserID = user.ID()
+	a.qml.EmitEvent(events.UserRefreshEvent, user.ID())
+	a.qml.ProcessFinished()
+	return 0
+}
+
+// DeleteAccount by index in Model
+func (a *Accounts) DeleteAccount(iAccount int, removePreferences bool) {
+	defer a.qml.ProcessFinished()
+	userID := a.Model.get(iAccount).UserID()
+	if err := a.um.DeleteUser(userID, removePreferences); err != nil {
+		log.Warn("deleteUser: cannot remove user: ", err)
+		if err == keychain.ErrNoKeychainInstalled {
+			a.qml.NotifyHasNoKeychain()
+			return
+		}
+		SendNotification(a.qml, TabSettings, err.Error())
+		return
+	}
+}

internal/frontend/qt-common/common.cpp

@@ -1,23 +1,30 @@
 // +build !nogui
 
-
-#include "logs.h"
+#include "common.h"
 #include "_cgo_export.h"
 
+#include <QObject>
 #include <QByteArray>
 #include <QString>
+#include <QVector>
 #include <QtGlobal>
 
 void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
 {
-    Q_UNUSED(type);
-    Q_UNUSED(context);
-
-    QByteArray localMsg = msg.toUtf8().prepend("WHITESPACE");
+    Q_UNUSED( type )
+        Q_UNUSED( context )
+        QByteArray localMsg = msg.toUtf8().prepend("WHITESPACE");
     logMsgPacked(
             const_cast<char*>( (localMsg.constData()) +10 ),
             localMsg.size()-10
             );
     //printf("Handler: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
 }
-void InstallMessageHandler() { qInstallMessageHandler(messageHandler); }
+void InstallMessageHandler() {
+    qInstallMessageHandler(messageHandler);
+}
+
+
+void RegisterTypes() {
+    qRegisterMetaType<QVector<int> >();
+}

internal/frontend/qt-common/common.go

@@ -0,0 +1,120 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+//#include "common.h"
+import "C"
+
+import (
+	"bufio"
+	"os"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/therecipe/qt/core"
+)
+
+var log = logrus.WithField("pkg", "frontend/qt-common")
+var logQML = logrus.WithField("pkg", "frontend/qml")
+
+// RegisterTypes for vector of ints
+func RegisterTypes() { // need to fix test message
+	C.RegisterTypes()
+}
+
+func installMessageHandler() {
+	C.InstallMessageHandler()
+}
+
+//export logMsgPacked
+func logMsgPacked(data *C.char, len C.int) {
+	logQML.Warn(C.GoStringN(data, len))
+}
+
+// QtSetupCoreAndControls hanldes global setup of Qt.
+// Should be called once per program. Probably once per thread is fine.
+func QtSetupCoreAndControls(programName, programVersion string) {
+	installMessageHandler()
+	// Core setup.
+	core.QCoreApplication_SetApplicationName(programName)
+	core.QCoreApplication_SetApplicationVersion(programVersion)
+	// High DPI scaling for windows.
+	core.QCoreApplication_SetAttribute(core.Qt__AA_EnableHighDpiScaling, false)
+	// Software OpenGL: to avoid dedicated GPU.
+	core.QCoreApplication_SetAttribute(core.Qt__AA_UseSoftwareOpenGL, true)
+	// Basic style for QuickControls2 objects.
+	//quickcontrols2.QQuickStyle_SetStyle("material")
+}
+
+// NewQByteArrayFromString is wrapper for new QByteArray from string
+func NewQByteArrayFromString(name string) *core.QByteArray {
+	return core.NewQByteArray2(name, -1)
+}
+
+// NewQVariantString is wrapper for QVariant alocator String
+func NewQVariantString(data string) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantStringArray is wrapper for QVariant alocator String Array
+func NewQVariantStringArray(data []string) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantBool is wrapper for QVariant alocator Bool
+func NewQVariantBool(data bool) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantInt is wrapper for QVariant alocator Int
+func NewQVariantInt(data int) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantLong is wrapper for QVariant alocator Int64
+func NewQVariantLong(data int64) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// Pause used to show GUI tests
+func Pause() {
+	time.Sleep(500 * time.Millisecond)
+}
+
+// Longer pause used to diplay GUI tests
+func PauseLong() {
+	time.Sleep(3 * time.Second)
+}
+
+// FIXME: Not working in test...
+func WaitForEnter() {
+	log.Print("Press 'Enter' to continue...")
+	bufio.NewReader(os.Stdin).ReadBytes('\n')
+}
+
+type Listener interface {
+	Add(string, chan<- string)
+}
+
+func MakeAndRegisterEvent(eventListener Listener, event string) <-chan string {
+	ch := make(chan string)
+	eventListener.Add(event, ch)
+	return ch
+}

internal/frontend/qt-common/common.h

@@ -10,8 +10,9 @@
 extern "C" {
 #endif // C++
 
-void InstallMessageHandler();
-;
+    void InstallMessageHandler();
+    void RegisterTypes();
+    ;
 
 #ifdef __cplusplus
 }

internal/frontend/qt-common/notification.go

@@ -0,0 +1,40 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+// Positions of notification bubble
+const (
+	TabAccount    = 0
+	TabSettings   = 1
+	TabHelp       = 2
+	TabQuit       = 4
+	TabUpdates    = 100
+	TabAddAccount = -1
+)
+
+// Notifier show bubble notification at postion marked by int
+type Notifier interface {
+	NotifyBubble(int, string)
+}
+
+// SendNotification unifies notification in GUI
+func SendNotification(qml Notifier, tabIndex int, msg string) {
+	qml.NotifyBubble(tabIndex, msg)
+}

internal/frontend/qt-ie/Makefile.local

@@ -0,0 +1,60 @@
+QMLfiles=$(shell find ../qml/ -name "*.qml") $(shell find ../qml/ -name "qmldir")
+FontAwesome=${CURDIR}/../share/fontawesome-webfont.ttf
+ImageDir=${CURDIR}/../share/icons
+Icons=$(shell find ${ImageDir} -name "*.png")
+Icons+= share/images/folder_open.png share/images/envelope_open.png
+MocDependencies= ./ui.go ./account_model.go ./folder_structure.go ./folder_functions.go
+## EnumDependecies= ../backend/errors/errors.go ../backend/progress.go ../backend/source/enum.go ../frontend/enums.go
+
+all: ../qml/ImportExportUI/images moc.go ../qml/GuiIE.qml qmlcheck rcc.cpp
+
+## ./qml/GuiIE.qml: enums.sh ${EnumDependecies}
+## 	./enums.sh
+
+../qml/ProtonUI/fontawesome.ttf:
+	ln -sf ${FontAwesome} $@
+../qml/ProtonUI/images:
+	ln -sf ${ImageDir} $@
+../qml/ImportExportUI/images:
+	ln -sf ${ImageDir} $@
+
+translate.ts: ${QMLfiles}
+	lupdate -recursive qml/  -ts $@
+
+rcc.cpp: ${QMLfiles} ${Icons} resources.qrc
+	rm -f rcc.cpp rcc.qrc && qtrcc -o .
+
+
+qmltest:
+	qmltestrunner -eventdelay 500 -import ../qml/
+qmlcheck:  ../qml/ProtonUI/fontawesome.ttf ../qml/ImportExportUI/images ../qml/ProtonUI/images
+	qmlscene -verbose -I ../qml/ -f ../qml/tst_GuiIE.qml --quit
+qmlpreview: ../qml/ProtonUI/fontawesome.ttf ../qml/ImportExportUI/images ../qml/ProtonUI/images
+	rm -f ../qml/*.qmlc ../qml/ProtonUI/*.qmlc ../qml/ImportExportUI/*.qmlc
+	qmlscene -verbose -I ../qml/ -f ../qml/tst_GuiIE.qml 2>&1
+
+test: qmlcheck moc.go rcc.cpp
+	go test -v
+
+moc.go: ${MocDependencies}
+	qtmoc
+
+clean:
+	rm -rf linux/
+	rm -rf darwin/
+	rm -rf windows/
+	rm -rf deploy/
+	rm -f moc.cpp
+	rm -f moc.go
+	rm -f moc.h
+	rm -f moc_cgo*.go
+	rm -f moc_moc.h
+	rm -f rcc.cpp
+	rm -f rcc.qrc
+	rm -f rcc_cgo*.go
+	rm -f ../rcc.cpp
+	rm -f ../rcc.qrc
+	rm -f ../rcc_cgo*.go
+	rm -rf ../qml/ProtonUI/images
+	rm -f ../qml/ProtonUI/fontawesome.ttf
+	find ../qml -name *.qmlc -exec rm {} \;

internal/frontend/qt-ie/README.md

@@ -0,0 +1,55 @@
+# ProtonMail Import-Export Qt interface
+Import-Export uses [Qt](https://www.qt.io) framework for creating appealing graphical
+user interface. Package [therecipe/qt](https://github.com/therecipe/qt) is used
+to implement Qt into [Go](https://www.goglang.com).
+
+
+# For developers
+The GUI is designed inside QML files. Communication with backend is done via
+[frontend.go](./frontend.go). The API documentation is done via `go-doc`.
+
+## Setup
+* if you don't have the system wide `go-1.8.1` download, install localy (e.g.
+  `~/build/go-1.8.1`) and setup:
+
+        export GOROOT=~/build/go-1.8.1/go
+        export PATH=$GOROOT/bin:$PATH
+
+* go to your working directory and export `$GOPATH`
+
+        export GOPATH=`Pwd`
+        mkdir -p $GOPATH/bin
+        export PATH=$PATH:$GOPATH/bin
+
+
+* if you dont have system wide `Qt-5.8.0`
+  [download](https://download.qt.io/official_releases/qt/5.8/5.8.0/qt-opensource-linux-x64-5.8.0.run),
+  install locally (e.g. `~/build/qt/qt-5.8.0`) and setup:
+
+        export QT_DIR=~/build/qt/qt-5.8.0
+        export PATH=$QT_DIR/5.8/gcc_64/bin:$PATH
+
+* `Go-Qt` setup (installation is system dependent see
+  [therecipe/qt/README](https://github.com/therecipe/qt/blob/master/README.md)
+  for details)
+
+        go get -u -v github.com/therecipe/qt/cmd/...
+        $GOPATH/bin/qtsetup
+
+## Compile
+* it is necessary to compile the Qt-C++ with go for resources and meta-objects
+
+        make -f Makefile.local
+
+* FIXME the rcc file is implicitly generated with `package main`. This needs to
+  be changed to `package qtie` manually
+* check that user interface is working
+
+        make -f Makefile.local test
+
+## Test
+
+        make -f Makefile.local qmlpreview
+
+## Deploy
+* before compilation of Import-Export it is necessary to run compilation of Qt-C++ part (done in makefile)