sendChatAction method
Use this method when you need to tell the user that something is happening on the bot's side
The status is set for 5 seconds or less (when a message arrives from your bot, Telegram clients clear its typing status). Returns True on success.
Example: The ImageBot needs some time to process a request and upload the image. Instead of sending a text message along the lines of “Retrieving image, please wait…”, the bot may use sendChatAction with action = upload_photo. The user will see a “sending photo” status for the bot.
We only recommend using this method when a response from the bot will take a noticeable amount of time to arrive.
Implementation
Future<bool> sendChatAction(dynamic chat_id, String action) async {
if (chat_id is! String && chat_id is! int) {
return Future.error(TelegramException(
'Attribute \'chat_id\' can only be either type of String or int'));
}
var requestUrl = _apiUri('sendChatAction');
var body = <String, dynamic>{'chat_id': chat_id, 'action': action};
return await HttpClient.httpPost(requestUrl, body: body);
}