uploadMergedMessageFile static method

Future<NIMResult<MessageUploadInfo>> uploadMergedMessageFile(List<NIMMessage> messages)

合并并上传消息，返回上传后的url和md5

Implementation

static Future<NIMResult<MessageUploadInfo>> uploadMergedMessageFile(
    List<NIMMessage> messages) async {
  final mergeMsg = await createForwardMessageListFileDetail(messages);
  if (mergeMsg.isSuccess && mergeMsg.data != null) {
    final List<int> fileBytes = utf8.encode(mergeMsg.data!);
    String fileName =
        "$mergeFileName${DateTime.now().millisecondsSinceEpoch}";
    var directory;
    if (Platform.isIOS) {
      directory = await getApplicationDocumentsDirectory();
    } else {
      directory = await getExternalStorageDirectory();
    }
    if (directory == null) {
      return NIMResult.failure(message: 'directory is null');
    }
    File file;
    try {
      file = File('${directory.path}/$fileName');
      file.writeAsBytesSync(fileBytes);
    } catch (e) {
      return NIMResult.failure(message: 'create file error ${e.toString()}');
    }
    final uploadRes =
        await NimCore.instance.nosService.upload(filePath: file.path);
    if (uploadRes.isSuccess && uploadRes.data != null) {
      try {
        final md5 = await file.md5;
        file.delete();
        return NIMResult.success(
            data: MessageUploadInfo(uploadRes.data!, md5));
      } catch (exception) {
        return NIMResult.failure(
            message: 'get md5 error ${exception.toString()}');
      }
    } else {
      return NIMResult.failure(message: uploadRes.errorDetails);
    }
  } else {
    return NIMResult.failure(message: mergeMsg.errorDetails);
  }
}