fetchNext method

Future<List<Conversation>> fetchNext({ required dynamic onSuccess(List<Conversation> message)?, required dynamic onError(CometChatException excep)?, })

Returns a list of Conversation object fetched after putting the filters.

Implementation

Future<List<Conversation>> fetchNext(
    {required Function(List<Conversation> message)? onSuccess,
    required Function(CometChatException excep)? onError}) async {
  try {
    final result = await channel.invokeMethod('fetchNextConversations', {
      'limit': this.limit,
      'type': this.conversationType,
      'init': this.init,
      'withUserAndGroupTags': withUserAndGroupTags,
      'withTags': this.withTags,
      'tags': this.tags,
      'key': this.key,
      'includeBlockedUsers': this.includeBlockedUsers,
      'withBlockedInfo': this.withBlockedInfo
    });
    final List<Conversation> res = [];
    if (result != null) {
      key = result["key"];
      debugPrint("key is $key");
      if (result["list"] != null) {
        for (var _obj in result["list"]) {
          try {
            res.add(Conversation.fromMap(_obj));
          } catch (e) {
            if (onError != null) {
              onError(CometChatException(ErrorCode.errorUnhandledException,
                  e.toString(), e.toString()));
            }
            return [];
          }
        }
      }
    }
    if (onSuccess != null) {
      onSuccess(res);
    }
    this.init = false;
    return res;
  } on PlatformException catch (platformException) {
    if (onError != null) {
      onError(CometChatException(platformException.code,
          platformException.details, platformException.message));
    }
  } catch (e) {
    debugPrint("Error: $e");
    if (onError != null) {
      onError(CometChatException(
          ErrorCode.errorUnhandledException, e.toString(), e.toString()));
    }
  }
  return [];
}