Merge pull request #352 from ros-tel/delete-channel-msg

Delete a message in a channel

configs.go

@@ -1138,6 +1138,7 @@ type PreCheckoutConfig struct {
 
 // DeleteMessageConfig contains information of a message in a chat to delete.
 type DeleteMessageConfig struct {
+	ChannelUsername string
 	ChatID          int64
 	MessageID       int
 }
@@ -1149,7 +1150,12 @@ func (config DeleteMessageConfig) method() string {
 func (config DeleteMessageConfig) values() (url.Values, error) {
 	v := url.Values{}
 
+	if config.ChannelUsername == "" {
 		v.Add("chat_id", strconv.FormatInt(config.ChatID, 10))
+	} else {
+		v.Add("chat_id", config.ChannelUsername)
+	}
+
 	v.Add("message_id", strconv.Itoa(config.MessageID))
 
 	return v, nil