notmuch: refresh dirlist in background

worker/notmuch/eventhandlers.go

@@ -2,8 +2,21 @@ package notmuch
 
 func (w *worker) handleNotmuchEvent(et eventType) error {
 	switch ev := et.(type) {
+	case *updateDirCounts:
+		return w.handleUpdateDirCounts(ev)
 	default:
-		_ = ev
 		return errUnsupported
 	}
 }
+
+func (w *worker) handleUpdateDirCounts(ev eventType) error {
+	for name, query := range w.nameQueryMap {
+		info, err := w.gatherDirectoryInfo(name, query)
+		if err != nil {
+			w.w.Logger.Printf("could not gather DirectoryInfo: %v\n", err)
+			continue
+		}
+		w.w.PostMessage(info, nil)
+	}
+	return nil
+}

worker/notmuch/events.go

@@ -3,3 +3,7 @@ package notmuch
 type eventType interface{}
 
 type event struct{}
+
+type updateDirCounts struct {
+	event
+}

worker/notmuch/worker.go

@@ -9,6 +9,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib/uidstore"
@@ -26,6 +27,8 @@ func init() {
 
 var errUnsupported = fmt.Errorf("unsupported command")
 
+const backgroundRefreshDelay = 1 * time.Minute
+
 type worker struct {
 	w                   *types.Worker
 	nmEvents            chan eventType
@@ -168,6 +171,12 @@ func (w *worker) handleConnect(msg *types.Connect) error {
 	}
 	w.done(msg)
 	w.emitLabelList()
+	go func() {
+		for {
+			w.nmEvents <- &updateDirCounts{}
+			time.Sleep(backgroundRefreshDelay)
+		}
+	}()
 	return nil
 }