rest_api_client 0.0.2

Abstraction for communicating with REST API in flutter projects. Incorporates exception handling and jwt with refresh token authorization.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:rest_api_client/rest_api_client.dart';

Future main() async {
  WidgetsFlutterBinding.ensureInitialized();

  IRestApiClient restApiClient = RestApiClient(
    exceptionOptions: RestApiClientExceptionOptions(
      showInternalServerErrors: true,
      showNetworkErrors: true,
      showValidationErrors: true,
    ),
    restApiClientOptions: RestApiClientOptions(
      //Base api url that will be prepended on every subsequent request
      baseUrl: 'https://mybestrestapi.com',
      //Default is true
      logNetworkTraffic: true,
      //If you api returns validation errors different from
      //default format that is response.data['validationErrors']
      //you can override it by providing this callback
      resolveValidationErrorsMap: (response) => response['errors']['validation'],
      refreshTokenEndpoint: '/Authentication/RefreshToken',
      refreshTokenParameterName: '<name_of_api_endpoint_parameter_for_refresh_token>',
      //This method is called on successfull call to refreshTokenEndpoint
      //Provides a way to get a jwt from response, much like
      //resolveValidationErrorsMap callback
      resolveJwt: (response) => response['jwt'],
      //Much like resolveJwt, this method is used to resolve
      //refresh token from response
      resolveRefreshToken: (response) => response['refreshToken'],
    ),
  );

  //init must be called, preferably right after the instantiation
  await restApiClient.init();

  //Use restApiClient from this point on

  //If you are using authentication in you app
  //probably it would look like this
  final response = await restApiClient.post('/Authentication/Authenticate', data: {
    'username': 'john',
    'password': 'Flutter_is_awesome1!'
  });

  //Extract the values from response
  var jwt = response.data['jwt'];
  var refreshToken = response.data['refreshToken'];

  //Let's asume that somehow we got jwt and refresh token
  //Probably pinged our api Authentication endpoint to get these two values
  jwt = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiZmx1dHRlciI6IkZsdXR0ZXIgaXMgYXdlc29tZSIsImNoYWxsZW5nZSI6IllvdSBtYWRlIGl0LCB5b3UgY3JhY2tlZCB0aGUgY29kZS4gWW91J3JlIGF3ZXNvbWUgdG9vLiIsImlhdCI6MTUxNjIzOTAyMn0.5QJz8hhxYsHxShS4hWKdHzcFH_IsQQZAnWSEcHJkspE';
  refreshToken = 'c91c03ea6c46a86cbc019be3d71d0a1a';

  //set the authorization
  restApiClient.addAuthorization(jwt: jwt, refreshToken: refreshToken);

  //Create authorized requests safely
  restApiClient.get('/Products');

  restApiClient.get('/Products', queryParameters: {
    'name': 'Darts'
  });

  restApiClient.post('/Products/Reviews/234', data: {
    'grade': 5,
    'comment': 'Throwing dart is not safe but upgrading to Dart 2.12.1 is. #nullsafety'
  });

  restApiClient.post('/Products/Reviews/234', data: {
    'grade': 5,
    'comment': 'On the other hand throwing dartz is fun',
  });

  restApiClient.delete('/Products/Reviews/234');
}