Add MUC-to-legacy migrator

telegram/commands.go

@@ -458,8 +458,13 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) (strin
 			if err != nil {
 				return err.Error(), false
 			}
-			if args[0] == "muc" && args[1] == "true" {
-				go c.MigrateToMUCs()
+			if args[0] == "muc" {
+				switch args[1] {
+				case "true":
+					go c.MigrateToMUCs()
+				case "false":
+					go c.MigrateFromMUCs()
+				}
 			}
 			gateway.DirtySessions = true
 

telegram/utils.go

@@ -2817,6 +2817,22 @@ func (c *Client) MigrateToMUCs() {
 	}
 }
 
+// MigrateFromMUCs kicks from MUCs and subscribes back to legacy group chats
+func (c *Client) MigrateFromMUCs() {
+	var chatIDs []int64
+	for _, chat := range c.GetGroupChats() {
+		chatIDs = append(chatIDs, chat.Id)
+	}
+
+	c.locks.mucCacheLock.Lock()
+	for _, chatID := range chatIDs {
+		c.kickMeFromMUC(chatID, []uint16{110, 332}, false, nil)
+		delete(c.mucCache, chatID)
+		c.subscribeToID(chatID, nil, false)
+	}
+	c.locks.mucCacheLock.Unlock()
+}
+
 // SetChatMemberStatus is a handy wrapper for the following TDLib method
 func (c *Client) SetChatMemberStatus(chatID, userID int64, status ChatMemberStatus, numericPayload int64, stringPayload, nickname string) error {
 	var chatMemberStatus client.ChatMemberStatus

xmpp/handlers.go

@@ -1478,8 +1478,13 @@ func handleSetQueryCommand(s xmpp.Sender, iq *stanza.IQ, command *stanza.Command
 								errString = fmt.Sprintf("Error for field %v: %v, aborting", field.Var, err.Error())
 								break
 							}
-							if field.Var == "muc" && fieldValue == "true" {
-								go session.MigrateToMUCs()
+							if field.Var == "muc" {
+								switch fieldValue {
+								case "true":
+									go session.MigrateToMUCs()
+								case "false":
+									go session.MigrateFromMUCs()
+								}
 							}
 							infoStrings = append(infoStrings, fmt.Sprintf("%s set to %s", field.Var, value))
 							gateway.DirtySessions = true