Launcher, app/base, sentry, update service

internal/app/base/migration.go

@@ -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/>.
+
+package base
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/ProtonMail/go-appdir"
+	"github.com/ProtonMail/proton-bridge/internal/constants"
+	"github.com/ProtonMail/proton-bridge/internal/locations"
+	"github.com/sirupsen/logrus"
+)
+
+// MigrateFiles migrates files from their old (pre-refactor) locations to their new locations.
+// We can remove this eventually.
+//
+// | entity |               old location                |            new location                |
+// |--------|-------------------------------------------|----------------------------------------|
+// | prefs  | ~/.cache/protonmail/<app>/c11/prefs.json  | ~/.config/protonmail/<app>/prefs.json  |
+// | c11    | ~/.cache/protonmail/<app>/c11             | ~/.cache/protonmail/<app>/cache/c11    |
+func MigrateFiles(configName string) error {
+	appDirs := appdir.New(filepath.Join(constants.VendorName, configName))
+	locations := locations.New(appDirs, configName)
+
+	userCacheDir := appDirs.UserCache()
+	newSettingsDir, err := locations.ProvideSettingsPath()
+	if err != nil {
+		return err
+	}
+
+	if err := moveIfExists(
+		filepath.Join(userCacheDir, "c11", "prefs.json"),
+		filepath.Join(newSettingsDir, "prefs.json"),
+	); err != nil {
+		return err
+	}
+
+	newCacheDir, err := locations.ProvideCachePath()
+	if err != nil {
+		return err
+	}
+
+	if err := moveIfExists(
+		filepath.Join(userCacheDir, "c11"),
+		filepath.Join(newCacheDir, "c11"),
+	); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func moveIfExists(source, destination string) error {
+	if _, err := os.Stat(source); os.IsNotExist(err) {
+		logrus.WithField("source", source).WithField("destination", destination).Debug("No need to migrate file")
+		return nil
+	}
+
+	if _, err := os.Stat(destination); !os.IsNotExist(err) {
+		logrus.WithField("source", source).WithField("destination", destination).Debug("No need to migrate file")
+		return nil
+	}
+
+	return os.Rename(source, destination)
+}