package msg import ( "fmt" "io" "math/rand" "sync" "time" "github.com/emersion/go-message" _ "github.com/emersion/go-message/charset" "github.com/emersion/go-message/mail" "github.com/pkg/errors" "git.sr.ht/~rjarry/aerc/lib" "git.sr.ht/~rjarry/aerc/models" "git.sr.ht/~rjarry/aerc/widgets" "git.sr.ht/~rjarry/aerc/worker/types" "git.sr.ht/~sircmpwn/getopt" ) type Recall struct{} func init() { register(Recall{}) } func (Recall) Aliases() []string { return []string{"recall"} } func (Recall) Complete(aerc *widgets.Aerc, args []string) []string { return nil } func (Recall) Execute(aerc *widgets.Aerc, args []string) error { force := false opts, optind, err := getopt.Getopts(args, "f") if err != nil { return err } for _, opt := range opts { switch opt.Option { case 'f': force = true } } if len(args) != optind { return errors.New("Usage: recall [-f]") } widget := aerc.SelectedTab().(widgets.ProvidesMessage) acct := widget.SelectedAccount() if acct == nil { return errors.New("No account selected") } if acct.SelectedDirectory() != acct.AccountConfig().Postpone && !force { return errors.New("Use -f to recall from outside the " + acct.AccountConfig().Postpone + " directory.") } store := widget.Store() if store == nil { return errors.New("Cannot perform action. Messages still loading") } msgInfo, err := widget.SelectedMessage() if err != nil { return errors.Wrap(err, "Recall failed") } acct.Logger().Println("Recalling message " + msgInfo.Envelope.MessageId) composer, err := widgets.NewComposer(aerc, acct, aerc.Config(), acct.AccountConfig(), acct.Worker(), "", msgInfo.RFC822Headers, models.OriginalMail{}) if err != nil { return errors.Wrap(err, "Cannot open a new composer") } // focus the terminal since the header fields are likely already done composer.FocusTerminal() addTab := func() { subject := msgInfo.Envelope.Subject if subject == "" { subject = "Recalled email" } tab := aerc.NewTab(composer, subject) composer.OnHeaderChange("Subject", func(subject string) { if subject == "" { tab.Name = "New email" } else { tab.Name = subject } tab.Content.Invalidate() }) composer.OnClose(func(composer *widgets.Composer) { worker := composer.Worker() uids := []uint32{msgInfo.Uid} if acct.SelectedDirectory() != acct.AccountConfig().Postpone { return } deleteMessage := func() { worker.PostAction(&types.DeleteMessages{ Uids: uids, }, func(msg types.WorkerMessage) { switch msg := msg.(type) { case *types.Done: aerc.PushStatus("Recalled message deleted", 10*time.Second) case *types.Error: aerc.PushError(msg.Error.Error()) } }) } if composer.Sent() { deleteMessage() } else { confirm := widgets.NewSelectorDialog( "Delete recalled message?", "If you proceed, the recalled message will be deleted.", []string{"Cancel", "Proceed"}, 0, aerc.SelectedAccountUiConfig(), func(option string, err error) { aerc.CloseDialog() switch option { case "Proceed": deleteMessage() default: } return }, ) aerc.AddDialog(confirm) } }) } // find the main body part and add it to the editor // TODO: copy all parts of the message over? var ( path []int part *models.BodyStructure ) if len(msgInfo.BodyStructure.Parts) != 0 { path = lib.FindPlaintext(msgInfo.BodyStructure, path) } part, err = msgInfo.BodyStructure.PartAtIndex(path) if part == nil || err != nil { part = msgInfo.BodyStructure } store.FetchBodyPart(msgInfo.Uid, path, func(reader io.Reader) { header := message.Header{} header.SetText( "Content-Transfer-Encoding", part.Encoding) header.SetContentType(part.MIMEType, part.Params) header.SetText("Content-Description", part.Description) entity, err := message.New(header, reader) if err != nil { aerc.PushError(err.Error()) addTab() return } mreader := mail.NewReader(entity) part, err := mreader.NextPart() if err != nil { aerc.PushError(err.Error()) addTab() return } composer.SetContents(part.Body) addTab() // add attachements if present var mu sync.Mutex parts := lib.FindAllNonMultipart(msgInfo.BodyStructure, nil, nil) for _, p := range parts { if lib.EqualParts(p, path) { continue } bs, err := msgInfo.BodyStructure.PartAtIndex(p) if err != nil { acct.Logger().Println("recall: PartAtIndex:", err) continue } store.FetchBodyPart(msgInfo.Uid, p, func(reader io.Reader) { mime := fmt.Sprintf("%s/%s", bs.MIMEType, bs.MIMESubType) name, ok := bs.Params["name"] if !ok { name = fmt.Sprintf("%s_%s_%d", bs.MIMEType, bs.MIMESubType, rand.Uint64()) } mu.Lock() composer.AddPartAttachment(name, mime, bs.Params, reader) mu.Unlock() }) } }) return nil }