7 files changed, 155 insertions, 0 deletions
diff --git a/worker/imap/flags.go b/worker/imap/flags.go
index 17c9393c..26250866 100644
--- a/worker/imap/flags.go
+++ b/worker/imap/flags.go
@@ -44,6 +44,38 @@ func (imapw *IMAPWorker) handleDeleteMessages(msg *types.DeleteMessages) {
 	}
 }
 
+func (imapw *IMAPWorker) handleAnsweredMessages(msg *types.AnsweredMessages) {
+	item := imap.FormatFlagsOp(imap.AddFlags, true)
+	flags := []interface{}{imap.AnsweredFlag}
+	if !msg.Answered {
+		item = imap.FormatFlagsOp(imap.RemoveFlags, true)
+		flags = []interface{}{imap.AnsweredFlag}
+	}
+	uids := toSeqSet(msg.Uids)
+	emitErr := func(err error) {
+		imapw.worker.PostMessage(&types.Error{
+			Message: types.RespondTo(msg),
+			Error:   err,
+		}, nil)
+	}
+	if err := imapw.client.UidStore(uids, item, flags, nil); err != nil {
+		emitErr(err)
+		return
+	}
+	imapw.worker.PostAction(&types.FetchMessageHeaders{
+		Uids: msg.Uids,
+	}, func(_msg types.WorkerMessage) {
+		switch m := _msg.(type) {
+		case *types.Error:
+			err := fmt.Errorf("handleAnsweredMessages: %v", m.Error)
+			imapw.worker.Logger.Printf("could not fetch headers: %s", err)
+			emitErr(err)
+		case *types.Done:
+			imapw.worker.PostMessage(&types.Done{types.RespondTo(msg)}, nil)
+		}
+	})
+}
+
 func (imapw *IMAPWorker) handleReadMessages(msg *types.ReadMessages) {
 	item := imap.FormatFlagsOp(imap.AddFlags, true)
 	flags := []interface{}{imap.SeenFlag}
diff --git a/worker/imap/worker.go b/worker/imap/worker.go
index 45a22690..a43ac49e 100644
--- a/worker/imap/worker.go
+++ b/worker/imap/worker.go
@@ -175,6 +175,8 @@ func (w *IMAPWorker) handleMessage(msg types.WorkerMessage) error {
 		w.handleDeleteMessages(msg)
 	case *types.ReadMessages:
 		w.handleReadMessages(msg)
+	case *types.AnsweredMessages:
+		w.handleAnsweredMessages(msg)
 	case *types.CopyMessages:
 		w.handleCopyMessages(msg)
 	case *types.AppendMessage:
diff --git a/worker/maildir/message.go b/worker/maildir/message.go
index 9d622b45..5c6c9307 100644
--- a/worker/maildir/message.go
+++ b/worker/maildir/message.go
@@ -53,6 +53,26 @@ func (m Message) SetFlags(flags []maildir.Flag) error {
 	return m.dir.SetFlags(m.key, flags)
 }
 
+// MarkReplied either adds or removes the maildir.FlagReplied flag from the
+// message.
+func (m Message) MarkReplied(answered bool) error {
+	flags, err := m.Flags()
+	if err != nil {
+		return fmt.Errorf("could not read previous flags: %v", err)
+	}
+	if answered {
+		flags = append(flags, maildir.FlagReplied)
+		return m.SetFlags(flags)
+	}
+	var newFlags []maildir.Flag
+	for _, flag := range flags {
+		if flag != maildir.FlagReplied {
+			newFlags = append(newFlags, flag)
+		}
+	}
+	return m.SetFlags(newFlags)
+}
+
 // MarkRead either adds or removes the maildir.FlagSeen flag from the message.
 func (m Message) MarkRead(seen bool) error {
 	flags, err := m.Flags()
diff --git a/worker/maildir/worker.go b/worker/maildir/worker.go
index dbdb9252..f14672e5 100644
--- a/worker/maildir/worker.go
+++ b/worker/maildir/worker.go
@@ -195,6 +195,8 @@ func (w *Worker) handleMessage(msg types.WorkerMessage) error {
 		return w.handleDeleteMessages(msg)
 	case *types.ReadMessages:
 		return w.handleReadMessages(msg)
+	case *types.AnsweredMessages:
+		return w.handleAnsweredMessages(msg)
 	case *types.CopyMessages:
 		return w.handleCopyMessages(msg)
 	case *types.AppendMessage:
@@ -438,6 +440,39 @@ func (w *Worker) handleDeleteMessages(msg *types.DeleteMessages) error {
 	return nil
 }
 
+func (w *Worker) handleAnsweredMessages(msg *types.AnsweredMessages) error {
+	for _, uid := range msg.Uids {
+		m, err := w.c.Message(*w.selected, uid)
+		if err != nil {
+			w.worker.Logger.Printf("could not get message: %v", err)
+			w.err(msg, err)
+			continue
+		}
+		if err := m.MarkReplied(msg.Answered); err != nil {
+			w.worker.Logger.Printf(
+				"could not mark message as answered: %v", err)
+			w.err(msg, err)
+			continue
+		}
+		info, err := m.MessageInfo()
+		if err != nil {
+			w.worker.Logger.Printf("could not get message info: %v", err)
+			w.err(msg, err)
+			continue
+		}
+
+		w.worker.PostMessage(&types.MessageInfo{
+			Message: types.RespondTo(msg),
+			Info:    info,
+		}, nil)
+
+		w.worker.PostMessage(&types.DirectoryInfo{
+			Info: w.getDirectoryInfo(w.selectedName),
+		}, nil)
+	}
+	return nil
+}
+
 func (w *Worker) handleReadMessages(msg *types.ReadMessages) error {
 	for _, uid := range msg.Uids {
 		m, err := w.c.Message(*w.selected, uid)
diff --git a/worker/notmuch/message.go b/worker/notmuch/message.go
index ec1adb9b..3fd2fb62 100644
--- a/worker/notmuch/message.go
+++ b/worker/notmuch/message.go
@@ -64,6 +64,39 @@ func (m *Message) NewBodyPartReader(requestedParts []int) (io.Reader, error) {
 	return lib.FetchEntityPartReader(msg, requestedParts)
 }
 
+// MarkAnswered either adds or removes the "replied" tag from the message.
+func (m *Message) MarkAnswered(answered bool) error {
+	haveReplied := false
+	tags, err := m.Tags()
+	if err != nil {
+		return err
+	}
+	for _, t := range tags {
+		if t == "replied" {
+			haveReplied = true
+			break
+		}
+	}
+	if haveReplied == answered {
+		// we already have the desired state
+		return nil
+	}
+
+	if haveAnswered {
+		err := m.RemoveTag("replied")
+		if err != nil {
+			return err
+		}
+		return nil
+	}
+
+	err = m.AddTag("replied")
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 // MarkRead either adds or removes the maildir.FlagSeen flag from the message.
 func (m *Message) MarkRead(seen bool) error {
 	haveUnread := false
diff --git a/worker/notmuch/worker.go b/worker/notmuch/worker.go
index 9929648d..b2262698 100644
--- a/worker/notmuch/worker.go
+++ b/worker/notmuch/worker.go
@@ -363,6 +363,33 @@ func (w *worker) handleFetchFullMessages(msg *types.FetchFullMessages) error {
 	return nil
 }
 
+func (w *worker) handleAnsweredMessages(msg *types.AnsweredMessages) error {
+	for _, uid := range msg.Uids {
+		m, err := w.msgFromUid(uid)
+		if err != nil {
+			w.w.Logger.Printf("could not get message: %v", err)
+			w.err(msg, err)
+			continue
+		}
+		if err := m.MarkAnswered(msg.Answered); err != nil {
+			w.w.Logger.Printf("could not mark message as answered: %v", err)
+			w.err(msg, err)
+			continue
+		}
+		err = w.emitMessageInfo(m, msg)
+		if err != nil {
+			w.w.Logger.Printf(err.Error())
+			w.err(msg, err)
+			continue
+		}
+	}
+	if err := w.emitDirectoryInfo(w.currentQueryName); err != nil {
+		w.w.Logger.Printf(err.Error())
+	}
+	w.done(msg)
+	return nil
+}
+
 func (w *worker) handleReadMessages(msg *types.ReadMessages) error {
 	for _, uid := range msg.Uids {
 		m, err := w.msgFromUid(uid)
diff --git a/worker/types/messages.go b/worker/types/messages.go
index f1ef36ea..475a7aa3 100644
--- a/worker/types/messages.go
+++ b/worker/types/messages.go
@@ -120,6 +120,12 @@ type ReadMessages struct {
 	Uids []uint32
 }
 
+type AnsweredMessages struct {
+	Message
+	Answered bool
+	Uids     []uint32
+}
+
 type CopyMessages struct {
 	Message
 	Destination string