Added ability to show when user is typing across Slack bridges. [#516]

bridge/slack/handlers.go

@@ -46,6 +46,14 @@ func (b *Bslack) handleSlackClient(messages chan *config.Message) {
 			b.Log.Debugf("== Receiving event %#v", msg.Data)
 		}
 		switch ev := msg.Data.(type) {
+		case *slack.UserTypingEvent:
+			rmsg, err := b.handleTypingEvent(ev)
+			if err != nil {
+				b.Log.Errorf("%#v", err)
+				continue
+			}
+
+			messages <- rmsg
 		case *slack.MessageEvent:
 			if b.skipMessageEvent(ev) {
 				b.Log.Debugf("Skipped message: %#v", ev)
@@ -235,6 +243,27 @@ func (b *Bslack) handleAttachments(ev *slack.MessageEvent, rmsg *config.Message)
 
 var commentRE = regexp.MustCompile(`.*?commented: (.*)`)
 
+func (b *Bslack) handleTypingEvent(ev *slack.UserTypingEvent) (*config.Message, error) {
+	var err error
+	// use our own func because rtm.GetChannelInfo doesn't work for private channels
+	channelInfo, err := b.getChannelByID(ev.Channel)
+	if err != nil {
+		return nil, err
+	}
+
+	rmsg := config.Message{
+		Username: b.getUsername(ev.User),
+		Channel:  channelInfo.Name,
+		Account:  b.Account,
+		Event:    config.EVENT_USER_TYPING,
+		ID:       "slack " + time.Now().String(),
+		Extra:    map[string][]interface{}{},
+	}
+
+	return &rmsg, nil
+
+}
+
 // handleDownloadFile handles file download
 func (b *Bslack) handleDownloadFile(rmsg *config.Message, file *slack.File) error {
 	if b.fileIsAvailable(file) {

bridge/slack/slack.go

@@ -187,7 +187,10 @@ func (b *Bslack) Reload(cfg *bridge.Config) (string, error) {
 }
 
 func (b *Bslack) Send(msg config.Message) (string, error) {
-	b.Log.Debugf("=> Receiving %#v", msg)
+	// Too noisy to log like other events
+	if msg.Event != config.EVENT_USER_TYPING {
+		b.Log.Debugf("=> Receiving %#v", msg)
+	}
 
 	// Make a action /me of the message
 	if msg.Event == config.EVENT_USER_ACTION {
@@ -262,6 +265,13 @@ func (b *Bslack) sendWebhook(msg config.Message) (string, error) {
 }
 
 func (b *Bslack) sendRTM(msg config.Message) (string, error) {
+	if msg.Event == config.EVENT_USER_TYPING {
+		if b.GetBool("ShowUserTyping") {
+			chanID := b.channelsByName[msg.Channel].ID
+			b.rtm.SendMessage(b.rtm.NewTypingMessage(chanID))
+		}
+		return "", nil
+	}
 	channelInfo, err := b.getChannel(msg.Channel)
 	if err != nil {
 		return "", fmt.Errorf("could not send message: %v", err)