Update the contact nickname when a chat title has changed

telegram/handlers.go

@@ -135,6 +135,12 @@ func (c *Client) updateHandler() {
 					uhOh()
 				}
 				c.updateMessageSendFailed(typedUpdate)
+			case client.TypeUpdateChatTitle:
+				typedUpdate, ok := update.(*client.UpdateChatTitle)
+				if !ok {
+					uhOh()
+				}
+				c.updateChatTitle(typedUpdate)
 			default:
 				// log only handled types
 				continue
@@ -277,3 +283,14 @@ func (c *Client) updateMessageSendFailed(update *client.UpdateMessageSendFailed)
 		c.cleanTempFile(file.Local.Path)
 	}
 }
+
+// chat title changed
+func (c *Client) updateChatTitle(update *client.UpdateChatTitle) {
+	gateway.SetNickname(c.jid, strconv.FormatInt(update.ChatId, 10), update.Title, c.xmpp)
+
+	// set also the status (for group chats only)
+	_, user, _ := c.GetContactByID(update.ChatId, nil)
+	if user == nil {
+		c.ProcessStatusUpdate(update.ChatId, update.Title, "chat", gateway.SPImmed(true))
+	}
+}

xmpp/gateway/gateway.go

@@ -13,6 +13,8 @@ import (
 	"gosrc.io/xmpp/stanza"
 )
 
+const NSNick string = "http://jabber.org/protocol/nick"
+
 // Queue stores presences to send later
 var Queue = make(map[string]*stanza.Presence)
 var QueueLock = sync.Mutex{}
@@ -52,6 +54,46 @@ func SendMessage(to string, from string, body string, component *xmpp.Component)
 		Body: body,
 	}
 
+	sendMessage(&message, component)
+}
+
+// SetNickname sets a new nickname for a contact
+func SetNickname(to string, from string, nickname string, component *xmpp.Component) {
+	componentJid := Jid.Bare()
+	messageFrom := from + "@" + componentJid
+
+	log.WithFields(log.Fields{
+		"from": from,
+		"to":   to,
+	}).Warn("Set nickname")
+
+	message := stanza.Message{
+		Attrs: stanza.Attrs{
+			From: messageFrom,
+			To:   to,
+			Type: "headline",
+		},
+		Extensions: []stanza.MsgExtension{
+			stanza.PubSubEvent{
+				EventElement: stanza.ItemsEvent{
+					Node:  NSNick,
+					Items: []stanza.ItemEvent{
+						stanza.ItemEvent{
+							Any: &stanza.Node{
+								XMLName: xml.Name{Space: NSNick, Local: "nick"},
+								Content: nickname,
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	sendMessage(&message, component)
+}
+
+func sendMessage(message *stanza.Message, component *xmpp.Component) {
 	// explicit check, as marshalling is expensive
 	if log.GetLevel() == log.DebugLevel {
 		xmlMessage, err := xml.Marshal(message)