dio_errors.dart

import 'package:dio/dio.dart';
import 'package:firebase_auth/firebase_auth.dart';

class DioErrorUtil {
  // general methods:------------------------------------------------------------
  static String handleError(error) {
    String errorDescription = "";
    if (error is DioError) {
      switch (error.type) {
        case DioErrorType.CANCEL:
          errorDescription = "Request to API server was cancelled";
          break;
        case DioErrorType.CONNECT_TIMEOUT:
          errorDescription = "Connection timeout with API server";
          break;
        case DioErrorType.DEFAULT:
          errorDescription =
          "Connection to API server failed due to internet connection";
          break;
        case DioErrorType.RECEIVE_TIMEOUT:
          errorDescription = "Receive timeout in connection with API server";
          break;
        case DioErrorType.RESPONSE:
          if (error.response.statusCode == 404)
            errorDescription =
                error.response.statusMessage ?? "Unexpected error occurred";
          else if (error.response.statusCode == 400) {
            errorDescription = error.response.statusMessage ?? "Bad request";
          } else if (error.response.statusCode == 401) {
            errorDescription = error.response.statusMessage ??
                "These credentials are wrong \nCheck and try again";
          } else if (error.response.statusCode == 500) {
            errorDescription = error.response.statusMessage ??
                "Server is currently under maintenance, Try again later";
          } else {
            errorDescription =
            "Received invalid status code: ${error.response.statusCode}";
          }
          break;
        case DioErrorType.SEND_TIMEOUT:
          errorDescription = "Send timeout in connection with API server";
          break;
      }
    } 
    return errorDescription;
  }
}