message: add auto delete timer changed handler

bot.go

@@ -361,6 +361,19 @@ func (b *Bot) ProcessUpdate(upd Update) {
 
 			return
 		}
+
+		if m.AutoDeleteTimerChanged != nil {
+			if handler, ok := b.handlers[OnAutoDeleteTimer]; ok {
+				handler, ok := handler.(func(*Message))
+				if !ok {
+					panic("telebot: auto delete timer handler is bad")
+				}
+
+				b.runHandler(func() { handler(m) })
+			}
+
+			return
+		}
 	}
 
 	if upd.EditedMessage != nil {

message.go

@@ -233,6 +233,14 @@ type Message struct {
 	// For a service message, represents the content of a service message,
 	// sent whenever a user in the chat triggers a proximity alert set by another user.
 	ProximityAlertTriggered *ProximityAlertTriggered `json:"proximity_alert_triggered,omitempty"`
+
+	// For a service message, represents about a change in auto-delete timer settings.
+	AutoDeleteTimerChanged *MessageAutoDeleteTimerChanged `json:"message_auto_delete_timer_changed,omitempty"`
+}
+
+// MessageAutoDeleteTimerChanged represents a service message about a change in auto-delete timer settings.
+type MessageAutoDeleteTimerChanged struct {
+	DeleteTime int `json:"message_auto_delete_time"`
 }
 
 // MessageEntity object represents "special" parts of text messages,

telebot.go

@@ -149,6 +149,11 @@ const (
 	//
 	// Handler: func(*Message)
 	OnProximityAlert = "\aproximity_alert_triggered"
+
+	// Will fire on AudoDeleteTimer
+	//
+	// Handler: func(*Message)
+	OnAutoDeleteTimer = "\amessage_auto_delete_timer_changed"
 )
 
 // ChatAction is a client-side status indicating bot activity.