handleException<T extends Object> method

Future<Either<AppException, Response>> handleException<T extends Object>(Future<Response> handler(), { String endpoint = '', })

Implementation

Future<Either<AppException, response.Response>>
    handleException<T extends Object>(
        Future<Response<dynamic>> Function() handler,
        {String endpoint = ''}) async {
  try {
    String? message;
    final res = await handler();
    if (res.data is List) {
    } else {
      print(res.data.runtimeType);
      if (res.data.runtimeType == String) {
        message = res.data;
      } else {
        message =
            Map<String, dynamic>.from(res.data as Map)['message'].toString();
      }
    }

    return Right(
      response.Response(
        statusCode: res.statusCode ?? 200,
        data: res.data,
        statusMessage: message ?? res.statusMessage,
      ),
    );
  } catch (e) {
    String message = '';
    String identifier = '';
    int statusCode = 0;
    log(e.runtimeType.toString());
    switch (e.runtimeType) {
      case SocketException:
        e as SocketException;
        message = 'Unable to connect to the server.';
        statusCode = 0;
        identifier = 'Socket Exception ${e.message}\n at  $endpoint';
        break;

      case DioException:
        e as DioException;
        var msg = e.response?.data?['message'] as String?;
        var errorMsg = e.response?.data?['errors'] as String?;
        errorMsg ??= '';
        var expMsg = e.message;
        message = msg != null && msg.isNotEmpty
            ? msg
            : expMsg != null && expMsg.isNotEmpty
                ? expMsg
                : 'Internal Error occured';
        statusCode = 1;
        identifier = 'DioException ${e.message} \nat  $endpoint';
        msg = msg ?? '' + '\n' + errorMsg;
        break;

      default:
        message = 'Unknown error occured';
        statusCode = 2;
        identifier = 'Unknown error ${e.toString()}\n at $endpoint';
    }
    return Left(
      AppException(
        message: message,
        statusCode: statusCode,
        identifier: identifier,
      ),
    );
  }
}