setTorchEnabled method

@override Future<void> setTorchEnabled(bool enabled)

Implementation

@override
Future<void> setTorchEnabled(bool enabled) {
  if (CallType.VIDEO_CALL != callType) {
    return Future.error(IllegalStateException(
        "Can't perform operation [setTorchEnabled] for AUDIO call"));
  }

  try {
    if (localStream == null) {
      return Future.error(IllegalStateException(
          "Can't perform operation [setTorchEnabled], cause 'localStream' not initialised"));
    } else {
      final videoTrack = localStream!
          .getVideoTracks()
          .firstWhere((track) => track.kind == 'video');
      return videoTrack.hasTorch().then((has) {
        if (has) {
          return videoTrack.setTorch(enabled);
        } else {
          return Future.error(IllegalStateException(
              "Can't perform operation  [setTorchEnabled], cause current camera does not support torch mode"));
        }
      });
    }
  } catch (error) {
    return Future.error(error);
  }
}