downloadFile method

Future<void> downloadFile(
  1. ChatItem item,
  2. FileAttachment attachment
)

Downloads the provided FileAttachment, if not downloaded already, or otherwise opens it or cancels the download.

Implementation

Future<void> downloadFile(ChatItem item, FileAttachment attachment) async {
  if (attachment.isDownloading) {
    attachment.cancelDownload();
  } else if (await attachment.open() == false) {
    try {
      await attachment.download();
    } catch (e) {
      if (e is DioException && e.type == DioExceptionType.cancel) {
        return;
      }

      await chat?.updateAttachments(item);
      await Future.delayed(Duration.zero);
      await attachment.download();
    }
  }
}