forked from Silverfish/proton-bridge
a187747c7c
Handles all IMAP related tasks. Unlike the previous iteration, this new service automatically adds and removes users from Gluon by interfacing with server manager.
133 lines
2.9 KiB
Go
133 lines
2.9 KiB
Go
// Copyright (c) 2023 Proton AG
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//
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// This file is part of Proton Mail Bridge.
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//
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// Proton Mail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Proton Mail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package imapservice
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import (
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"sync"
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"github.com/ProtonMail/go-proton-api"
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"github.com/ProtonMail/proton-bridge/v3/internal/usertypes"
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"golang.org/x/exp/maps"
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)
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type labelMap = map[string]proton.Label
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// sharedLabels holds the shared state of all the available API labels which can safely be shared among
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// all IMAP states. It's written this way to prevent issues with invalid use of the locks.
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type sharedLabels interface {
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Read() labelsRead
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Write() labelsWrite
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}
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type labelsRead interface {
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Close()
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GetLabel(id string) (proton.Label, bool)
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GetLabels() []proton.Label
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}
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type labelsWrite interface {
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labelsRead
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SetLabel(id string, label proton.Label)
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Delete(id string)
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}
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type rwLabels struct {
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lock sync.RWMutex
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labels labelMap
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}
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func (r *rwLabels) Read() labelsRead {
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r.lock.RLock()
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return &rwLabelsRead{rw: r}
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}
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func (r *rwLabels) Write() labelsWrite {
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r.lock.Lock()
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return &rwLabelsWrite{rw: r}
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}
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func (r *rwLabels) getLabelUnsafe(id string) (proton.Label, bool) {
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v, ok := r.labels[id]
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return v, ok
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}
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func (r *rwLabels) getLabelsUnsafe() []proton.Label {
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return maps.Values(r.labels)
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}
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func (r *rwLabels) SetLabels(labels []proton.Label) {
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r.lock.Lock()
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defer r.lock.Unlock()
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r.labels = usertypes.GroupBy(labels, func(label proton.Label) string { return label.ID })
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}
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func (r *rwLabels) GetLabelMap() labelMap {
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r.lock.Lock()
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defer r.lock.Unlock()
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return maps.Clone(r.labels)
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}
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func newRWLabels() *rwLabels {
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return &rwLabels{
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labels: make(labelMap),
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}
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}
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type rwLabelsRead struct {
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rw *rwLabels
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}
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func (r rwLabelsRead) Close() {
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r.rw.lock.RUnlock()
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}
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func (r rwLabelsRead) GetLabel(id string) (proton.Label, bool) {
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return r.rw.getLabelUnsafe(id)
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}
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func (r rwLabelsRead) GetLabels() []proton.Label {
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return r.rw.getLabelsUnsafe()
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}
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type rwLabelsWrite struct {
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rw *rwLabels
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}
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func (r rwLabelsWrite) Close() {
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r.rw.lock.Unlock()
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}
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func (r rwLabelsWrite) GetLabel(id string) (proton.Label, bool) {
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return r.rw.getLabelUnsafe(id)
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}
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func (r rwLabelsWrite) GetLabels() []proton.Label {
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return r.rw.getLabelsUnsafe()
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}
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func (r rwLabelsWrite) SetLabel(id string, label proton.Label) {
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r.rw.labels[id] = label
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}
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func (r rwLabelsWrite) Delete(id string) {
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delete(r.rw.labels, id)
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}
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