import 'package:clean_arch_example_cubit/home_page_screen.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

import 'package:flutter/material.dart';

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ),
    );
  }
}

import 'package:clean_arch_example_cubit/presentation/bloc/home_page/home_page_cubit.dart';
import 'package:clean_arch_example_cubit/presentation/bloc/home_page/home_page_state.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final HomePageCubit cubit =  HomePageCubit();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
          child: BlocBuilder<HomePageCubit, HomePageState>(
        bloc: cubit,
        builder: (context, state) {
          return Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text(
                'You have pushed the button this many times:',
              ),
              Text(
                '${state.count}',
                style: Theme.of(context).textTheme.headline4,
              ),
            ],
          );
        },
      )),
      floatingActionButton: FloatingActionButton(
        onPressed: cubit.incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ),
    );
  }
}

import 'package:clean_arch_example_cubit/presentation/bloc/home_page/home_page_state.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class HomePageCubit extends Cubit<HomePageState> {
  HomePageCubit() : super(HomePageState(count: 0));

  void incrementCounter() {
    emit(HomePageState(count: state.count+1));
  }
}

class HomePageState {
  final int count;

  const HomePageState({required this.count});
}

import 'package:clean_arch_example_cubit/data/repository/interface/counter_repo.dart';
import 'package:hive/hive.dart';

class CounterRepositoryImpl extends CounterRepository {
  static const boxKey = 'counter';

  final Box box;

  CounterRepositoryImpl(this.box);

  @override
  int getLastCount() => box.get(boxKey, defaultValue: 0);

  @override
  Future<void> saveCount(int count) => box.put(boxKey, count);
}

import 'package:clean_arch_example_cubit/data/repository/interface/counter_repo.dart';
import 'package:clean_arch_example_cubit/domain/use_cases/interfaces/counter_case.dart';

class CounterCaseImpl extends CounterCase {
  final CounterRepository _counterRepository;

  CounterCaseImpl(this._counterRepository);

  @override
  int getLastCount() => _counterRepository.getLastCount();

  @override
  Future<int> saveCount(int count) => _counterRepository.saveCount(count);
}

import 'package:clean_arch_example_cubit/data/repository/impl/counter_repo_impl.dart';
import 'package:clean_arch_example_cubit/data/repository/interface/counter_repo.dart';
import 'package:clean_arch_example_cubit/domain/use_cases/impl/counter_case_impl.dart';
import 'package:clean_arch_example_cubit/domain/use_cases/interfaces/counter_case.dart';
import 'package:hive/hive.dart';
import 'package:path_provider/path_provider.dart';

class DI {
  static DI? instance;

  late CounterRepository counterRepository;
  late CounterCase counterCase;

  DI._();

  static DI getInstance() {
    return instance ?? (instance = DI._());
  }

  Future<void> init() async {
    final directory = await getApplicationSupportDirectory();
    Hive.init(directory.path);
    counterRepository = CounterRepositoryImpl(await Hive.openBox('counter'));
    counterCase = CounterCaseImpl(counterRepository);
  }
}

import 'package:clean_arch_example_cubit/di.dart';
import 'package:clean_arch_example_cubit/presentation/screen/home_page_screen.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: FutureBuilder(
        future: DI.getInstance().init(),
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.done) {
            return MyHomePage(title: 'Flutter Demo Home Page');
          }else{
            return const CircularProgressIndicator();
          }
        },
      ),
    );
  }
}

import 'package:clean_arch_example_cubit/di.dart';
import 'package:clean_arch_example_cubit/presentation/bloc/home_page/home_page_state.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class HomePageCubit extends Cubit<HomePageState> {
  final counterCases = DI.getInstance().counterCase;

  HomePageCubit() : super(HomePageState(count: 0)) {
    emit(HomePageState(count: counterCases.getLastCount()));
  }

  Future<void> incrementCounter() async {
    final _savedValue = await counterCases.saveCount(state.count + 1);
    emit(HomePageState(count: _savedValue));
  }
}