impak_retro 2.0.0

ImpakRetro is a Dart library built on Dio, offering a type-safe, configurable, and user-friendly interface for handling HTTP requests and interacting with APIs.

example/lib/main.dart

import 'dart:io';

import 'package:example/src/constants/local_constants.dart';
import 'package:example/src/domain/sample_api_response_model.dart';
import 'package:flutter/material.dart';
import 'package:impak_retro/impak.dart';
import 'package:permission_handler/permission_handler.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String? error;
  late ImpakRetro impakRetro;

  List<Post> _response = [];

  //bool _result = false;

  @override
  void initState() {
    impakRetro = ImpakRetro(
        baseUrl: Constants.BASE_URL,
        authToken: "Bearer ${Constants.TOKEN}",
        userLogger: true,
        timeout: 30,
        timeUnit: TimeUnit.SECONDS);
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _safeCall();
    });
    super.initState();
  }

  _download() async {
    final status = await Permission.storage.request();
    late String savePath;
    try {
      if (!status.isGranted) {
        print("Storage permission denied.");
        return;
      }

      final Directory documents =
          Directory('/storage/emulated/0/Documents/my_app_folder');
      if (!await documents.exists()) {
        await documents.create(recursive: true);
      }
      savePath = '${documents.path}/File_Downloaded.pdf';
      impakRetro.download(
          path:
              "https://cross-river-pay.s3.us-east-2.amazonaws.com/cas-assets/1744163907785.pdf",
          savePath: savePath,
          onProgress: (progress, total) {
            setState(() {
              error = "${progress / total * 100}%";
            });
          });
    } catch (e, s) {}
  }

  _safeCall() async {
    try {
      final result = await impakRetro.typeSafeCall(
        path: "/auth/login",
        baseUrl: 'https://agent.api.onemoni.com/api/v1',
        method: RequestMethod.POST,
        body: {"username": 'takonajie', "password": 'ABab12.'},
        successFromJson: (json) => Response.fromJson(json),
      );
      if (result.isSuccessful) {
      } else {
        error = result.asError["error"];
      }
      /*final result = await impakRetro.typeSafeFormDataCall(
          path: Constants.SAMPLE_PATH1,
          method: RequestMethod.GET,
          formData: ImpakRetroFormData({
            "data": "",
            "dlfd ": ""
          }),
          queryParameters: {
            "param1": 3,
            'param2': "other params"
          },
          baseUrl: Constants.BASE_URL,
          authorizationToken: "Bearer ${Constants.TOKEN1}",
        successFromJson: (json) => Response.fromJson(json),
      );

      if(result.isSuccessful){
        ///Response is my custom model and has a field `data`
        ///`asBody` returns a dynamic result that matches `Response` model
        _result = result.asBody.data;//Response.fromJson(result.asBody).data;
        ///OR
        ///
        //_result = result.asBody["data"];
      }else {
        error = result.asError.toString(); //asError returns a dynamic data which conforms to what the api returns when there is an error
      }*/
    } catch (e) {
      if (e is ImpakRetroException) {
        error = e.message;
        switch (e.type) {
          case ExceptionType.TIMEOUT_ERROR:
          //Custom implementation
          case ExceptionType.BAD_REQUEST:
          //Custom implementation
          case ExceptionType.SERVER_ERROR:
          //Custom implementation
          case ExceptionType.CANCELLED_ERROR:
          //Custom implementation
          case ExceptionType.UNKNOWN_ERROR:
          //Custom implementation
          case ExceptionType.MAPPING_ERROR:
          //Custom implementation
          case ExceptionType.AUTHORISATION_ERROR:
          //Custom implementation
          case ExceptionType.CONNECTION_ERROR:
          //Custom implementation
        }
      } else {
        setState(() {
          // error = e.toString();
        });
      }
    }
  }

  void _call() async {
    try {
      setState(() {
        _response = [];
      });
      final params = {"page": 19, "size": 3};
      impakRetro.init(
          baseUrl: Constants.BASE_URL1, authToken: "Bearer ${Constants.TOKEN}");
      final header = {"Authorization": "Bearer ${Constants.TOKEN}"};
      final result = await impakRetro.call(
        path: Constants.SAMPLE_PATH1,
        queryParameters: params,
        headers: header,
        canceller: Canceller(),
        method: RequestMethod.GET,
      );
      if (result.isSuccessful) {
        final response = ApiResponseModel.fromJson(result.data);
        _response = response.data.posts;
        error = null;
      } else {
        _response = [];
        error = result.asError["message"];
      }
    } catch (e) {
      if (e.runtimeType == ImpakRetroException) {
        e as ImpakRetroException;
        setState(() {
          _response = [];
          error = e.message;
        });
        switch (e.type) {
          case ExceptionType.TIMEOUT_ERROR:
            break;
          case ExceptionType.SERVER_ERROR:
            break;
          case ExceptionType.UNKNOWN_ERROR:
            break;
          case ExceptionType.AUTHORISATION_ERROR:
            break;
          case ExceptionType.CONNECTION_ERROR:
            break;
          case ExceptionType.MAPPING_ERROR:
            break;
          case ExceptionType.BAD_REQUEST:
            break;
          case ExceptionType.CANCELLED_ERROR:
            break;
        }
      } else {
        setState(() {
          _response = [];
          error = e.toString();
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          children: <Widget>[
            if (_response.isNotEmpty) ...[
              Text(
                'TODOS',
                style: TextStyle(fontWeight: FontWeight.w600),
              ),
              Flexible(
                  child: ListView.builder(
                      itemCount: _response.length,
                      itemBuilder: (_, index) => Padding(
                            padding: const EdgeInsets.symmetric(
                                horizontal: 24.0, vertical: 8.0),
                            child: Column(
                              children: [
                                Text(
                                  _response[index].title,
                                  style: TextStyle(fontWeight: FontWeight.w500),
                                ),
                                const SizedBox(
                                  height: 8,
                                ),
                                Text(_response[index].title),
                              ],
                            ),
                          )))
            ],
            if (error != null) ...[
              Text(
                'Request Error',
                style: TextStyle(fontWeight: FontWeight.w500),
              ),
              Text(
                '$error',
                style: Theme.of(context).textTheme.headlineMedium,
              ),
            ]
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _download,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

class Response {
  final int status;
  final String message;
  final bool data;

  Response({required this.status, required this.message, required this.data});

  factory Response.fromJson(Map<String, dynamic> json) {
    return Response(
        status: json['status'], message: json['message'], data: json['data']);
  }
}