103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
// Copyright (c) 2021 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail 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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// ProtonMail 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 ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package transfer
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import (
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"os"
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"path/filepath"
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"strings"
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"github.com/pkg/errors"
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)
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// MBOXProvider implements import and export to/from MBOX structure.
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type MBOXProvider struct {
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root string
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}
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func NewMBOXProvider(root string) *MBOXProvider {
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return &MBOXProvider{
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root: root,
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}
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}
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// ID is used for generating transfer ID by combining source and target ID.
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// We want to keep the same rules for import from or export to local files
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// no matter exact path, therefore it returns constant. The same as EML.
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func (p *MBOXProvider) ID() string {
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return "local" //nolint[goconst]
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}
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// Mailboxes returns all available folder names from root of EML files.
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// In case the same folder name is used more than once (for example root/a/foo
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// and root/b/foo), it's treated as the same folder.
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func (p *MBOXProvider) Mailboxes(includeEmpty, includeAllMail bool) ([]Mailbox, error) {
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filePaths, err := getAllPathsWithSuffix(p.root, ".mbox")
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if err != nil {
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return nil, err
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}
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mailboxNames := map[string]bool{}
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for _, filePath := range filePaths {
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fileName := filepath.Base(filePath)
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filePath, err := p.handleAppleMailMBOXStructure(filePath)
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if err != nil {
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log.WithError(err).Warn("Failed to handle MBOX structure")
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continue
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}
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mailboxName := strings.TrimSuffix(fileName, ".mbox")
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mailboxNames[mailboxName] = true
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labels, err := getGmailLabelsFromMboxFile(filepath.Join(p.root, filePath))
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if err != nil {
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log.WithError(err).Error("Failed to get gmail labels from mbox file")
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continue
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}
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for label := range labels {
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mailboxNames[label] = true
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}
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}
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mailboxes := []Mailbox{}
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for mailboxName := range mailboxNames {
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mailboxes = append(mailboxes, Mailbox{
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ID: "",
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Name: mailboxName,
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Color: "",
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IsExclusive: false,
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})
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}
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return mailboxes, nil
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}
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// handleAppleMailMBOXStructure changes the path of mailbox directory to
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// the path of mbox file. Apple Mail MBOX exports has this structure:
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// `Folder.mbox` directory with `mbox` file inside.
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// Example: `Folder.mbox/mbox` (and this function converts `Folder.mbox`
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// to `Folder.mbox/mbox`).
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func (p *MBOXProvider) handleAppleMailMBOXStructure(filePath string) (string, error) {
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if info, err := os.Stat(filepath.Join(p.root, filePath)); err == nil && info.IsDir() {
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if _, err := os.Stat(filepath.Join(p.root, filePath, "mbox")); err != nil {
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return "", errors.Wrap(err, "wrong mbox structure")
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}
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return filepath.Join(filePath, "mbox"), nil
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}
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return filePath, nil
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}
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