try {
  final response = await dio.get('/api/data');
} on DioException catch (e) {
  if (e.type == DioExceptionType.connectionTimeout) {
    print('Connection timed out');
  } else if (e.type == DioExceptionType.connectionError) {
    print('No internet connection');
  }
}

class DioErrorHandler {
  static String handleError(DioException error) {
    switch (error.type) {
      case DioExceptionType.connectionTimeout:
        return 'Connection timed out';
      case DioExceptionType.sendTimeout:
        return 'Request timed out';
      case DioExceptionType.connectionError:
        return 'No internet connection';
      case DioExceptionType.badResponse:
        return _handleBadResponse(error.response?.statusCode);
      default:
        return 'Something went wrong';
    }
  }

  static String _handleBadResponse(int? statusCode) {
    switch (statusCode) {
      case 400:
        return 'Bad request';
      case 401:
        return 'Unauthorized';
      case 404:
        return 'Not found';
      case 500:
        return 'Internal server error';
      default:
        return 'Server error';
    }
  }
}

dio.interceptors.add(
  InterceptorsWrapper(
    onError: (DioException error, handler) {
      // Log the error
      logger.e('API Error: ${error.message}');

      // Transform the error message
      final errorMessage = DioErrorHandler.handleError(error);

      // Show user-friendly message
      showErrorSnackBar(errorMessage);

      return handler.next(error);
    },
  ),
);

Future\<T\> makeApiRequest\<T\>(Future\<T\> Function() request) async {
  try {
    return await request();
  } on DioException catch (e) {
    final errorMessage = DioErrorHandler.handleError(e);
    throw CustomException(errorMessage);
  } catch (e) {
    throw CustomException('An unexpected error occurred');
  }
}