Update our message flags when server updates them

lib/msgstore.go

@@ -112,9 +112,7 @@ func merge(to *types.MessageInfo, from *types.MessageInfo) {
 	if from.Envelope != nil {
 		to.Envelope = from.Envelope
 	}
-	if len(from.Flags) != 0 {
 	to.Flags = from.Flags
-	}
 	if from.Size != 0 {
 		to.Size = from.Size
 	}

worker/imap/fetch.go

@@ -40,7 +40,11 @@ func (imapw *IMAPWorker) handleFetchMessageBodyPart(
 	imapw.worker.Logger.Printf("Fetching message part")
 	section := &imap.BodySectionName{}
 	section.Path = msg.Part
-	items := []imap.FetchItem{section.FetchItem()}
+	items := []imap.FetchItem{
+		imap.FetchFlags,
+		imap.FetchUid,
+		section.FetchItem(),
+	}
 	uids := imap.SeqSet{}
 	uids.AddNum(msg.Uid)
 	imapw.handleFetchMessages(msg, &uids, items, section)
@@ -51,7 +55,11 @@ func (imapw *IMAPWorker) handleFetchFullMessages(
 
 	imapw.worker.Logger.Printf("Fetching full messages")
 	section := &imap.BodySectionName{}
-	items := []imap.FetchItem{section.FetchItem()}
+	items := []imap.FetchItem{
+		imap.FetchFlags,
+		imap.FetchUid,
+		section.FetchItem(),
+	}
 	imapw.handleFetchMessages(msg, &msg.Uids, items, section)
 }
 
@@ -89,6 +97,12 @@ func (imapw *IMAPWorker) handleFetchMessages(
 					Reader:  reader,
 					Uid:     _msg.Uid,
 				}, nil)
+				// Update flags (to mark message as read)
+				imapw.worker.PostMessage(&types.MessageInfo{
+					Message: types.RespondTo(msg),
+					Flags:   _msg.Flags,
+					Uid:     _msg.Uid,
+				}, nil)
 			case *types.FetchMessageBodyPart:
 				reader := _msg.GetBody(section)
 				imapw.worker.PostMessage(&types.MessageBodyPart{
@@ -96,6 +110,12 @@ func (imapw *IMAPWorker) handleFetchMessages(
 					Reader:  reader,
 					Uid:     _msg.Uid,
 				}, nil)
+				// Update flags (to mark message as read)
+				imapw.worker.PostMessage(&types.MessageInfo{
+					Message: types.RespondTo(msg),
+					Flags:   _msg.Flags,
+					Uid:     _msg.Uid,
+				}, nil)
 			}
 		}
 		done <- nil

worker/imap/worker.go

@@ -171,6 +171,18 @@ func (w *IMAPWorker) handleImapUpdate(update client.Update) {
 			Recent: int(status.Recent),
 			Unseen: int(status.Unseen),
 		}, nil)
+	case *client.MessageUpdate:
+		msg := update.Message
+		if msg.Uid == 0 {
+			msg.Uid = w.seqMap[msg.SeqNum-1]
+		}
+		w.worker.PostMessage(&types.MessageInfo{
+			BodyStructure: msg.BodyStructure,
+			Envelope:      msg.Envelope,
+			Flags:         msg.Flags,
+			InternalDate:  msg.InternalDate,
+			Uid:           msg.Uid,
+		}, nil)
 	case *client.ExpungeUpdate:
 		i := update.SeqNum - 1
 		uid := w.seqMap[i]