setStickerSetThumb method

Future<bool> setStickerSetThumb(String name, int user_id, { dynamic thumb, })

Use this method to set the thumbnail of a sticker set

Animated thumbnails can be set for animated sticker sets only.

Returns True on success.

Implementation

Future<bool> setStickerSetThumb(String name, int user_id,
    {dynamic thumb}) async {
  var requestUrl = _apiUri('setStickerSetThumb');
  var body = <String, dynamic>{
    'name': name,
    'user_id': user_id,
  };
  if (thumb == null) {
    return await HttpClient.httpPost(requestUrl, body: body);
  } else if (thumb is io.File) {
    // filename cannot be empty to post to Telegram server
    var files = List<MultipartFile>.filled(
        1,
        MultipartFile('thumb', thumb.openRead(), thumb.lengthSync(),
            filename: '${thumb.lengthSync()}'));
    return await HttpClient.httpMultipartPost(requestUrl, files, body: body);
  } else if (thumb is String) {
    body.addAll({'thumb': thumb});
    return await HttpClient.httpPost(requestUrl, body: body);
  } else {
    return Future.error(TelegramException(
        'Attribute \'thumb\' can only be either io.File or String (Telegram file_id or image url)'));
  }
}