Add directory info messages

This populates the directory info model properly when requested,
allowing the fields to be relied upon elsewhere.

This also sends the dirinfo when new messages come in.

worker/maildir/worker.go

@@ -23,10 +23,11 @@ var errUnsupported = fmt.Errorf("unsupported command")
 
 // A Worker handles interfacing between aerc's UI and a group of maildirs.
 type Worker struct {
-	c        *Container
-	selected *maildir.Dir
-	worker   *types.Worker
-	watcher  *fsnotify.Watcher
+	c            *Container
+	selected     *maildir.Dir
+	selectedName string
+	worker       *types.Worker
+	watcher      *fsnotify.Watcher
 }
 
 // NewWorker creates a new maildir worker with the provided worker.
@@ -75,7 +76,7 @@ func (w *Worker) handleFSEvent(ev fsnotify.Event) {
 	if w.selected == nil {
 		return
 	}
-	_, err := w.selected.Unseen()
+	newUnseen, err := w.selected.Unseen()
 	if err != nil {
 		w.worker.Logger.Printf("could not move new to cur : %v", err)
 		return
@@ -88,6 +89,11 @@ func (w *Worker) handleFSEvent(ev fsnotify.Event) {
 	w.worker.PostMessage(&types.DirectoryContents{
 		Uids: uids,
 	}, nil)
+	dirInfo := w.getDirectoryInfo()
+	dirInfo.Recent = len(newUnseen)
+	w.worker.PostMessage(&types.DirectoryInfo{
+		Info: dirInfo,
+	}, nil)
 }
 
 func (w *Worker) done(msg types.WorkerMessage) {
@@ -101,6 +107,48 @@ func (w *Worker) err(msg types.WorkerMessage, err error) {
 	}, nil)
 }
 
+func (w *Worker) getDirectoryInfo() *models.DirectoryInfo {
+	dirInfo := &models.DirectoryInfo{
+		Name:     w.selectedName,
+		Flags:    []string{},
+		ReadOnly: false,
+		// total messages
+		Exists: 0,
+		// new messages since mailbox was last opened
+		Recent: 0,
+		// total unread
+		Unseen: 0,
+	}
+	uids, err := w.c.UIDs(*w.selected)
+	if err != nil {
+		w.worker.Logger.Printf("could not get uids: %v", err)
+		return dirInfo
+	}
+	dirInfo.Exists = len(uids)
+	for _, uid := range uids {
+		message, err := w.c.Message(*w.selected, uid)
+		if err != nil {
+			w.worker.Logger.Printf("could not get message: %v", err)
+			continue
+		}
+		flags, err := message.Flags()
+		if err != nil {
+			w.worker.Logger.Printf("could not get flags: %v", err)
+			continue
+		}
+		seen := false
+		for _, flag := range flags {
+			if flag == maildir.FlagSeen {
+				seen = true
+			}
+		}
+		if !seen {
+			dirInfo.Unseen++
+		}
+	}
+	return dirInfo
+}
+
 func (w *Worker) handleMessage(msg types.WorkerMessage) error {
 	switch msg := msg.(type) {
 	case *types.Unsupported:
@@ -195,6 +243,7 @@ func (w *Worker) handleOpenDirectory(msg *types.OpenDirectory) error {
 		return err
 	}
 	w.selected = &dir
+	w.selectedName = msg.Directory
 
 	// add watch path
 	newDir := filepath.Join(string(*w.selected), "new")
@@ -208,17 +257,7 @@ func (w *Worker) handleOpenDirectory(msg *types.OpenDirectory) error {
 
 	// TODO: why does this need to be sent twice??
 	info := &types.DirectoryInfo{
-		Info: &models.DirectoryInfo{
-			Name:     msg.Directory,
-			Flags:    []string{},
-			ReadOnly: false,
-			// total messages
-			Exists: 0,
-			// new messages since mailbox was last opened
-			Recent: 0,
-			// total unread
-			Unseen: 0,
-		},
+		Info: w.getDirectoryInfo(),
 	}
 	w.worker.PostMessage(info, nil)
 	w.worker.PostMessage(info, nil)