dafl_music/Sources/dafl_project_flutter/lib/main.dart

import 'dart:async';
import 'package:dafl_project_flutter/persistence/database_saver.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:path_provider/path_provider.dart';
import 'dart:math';
import './views/pages/home/p_home.dart';
import './views/pages/main/p_main.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';
import 'package:rive/rive.dart';

import 'package:dafl_project_flutter/controller/controller.dart';



void main() {
  MyApp mainApp = MyApp();

  runApp(mainApp);
}


class MyApp extends StatelessWidget {

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context){
    SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
    return ChangeNotifierProvider(
      create: (context) => CardProvider(),
      child: MaterialApp(
        debugShowCheckedModeBanner: false,
        title: 'Flutter Demo',
        home: HomePage(),
      ),
    );
  }
}

enum CardStatus { like, disLike, discovery}

class CardProvider extends ChangeNotifier{
  List<String> _urlImages = [];
  bool _isDragging = false;
  double _angle = 0;
  Offset _position = Offset.zero;
  Size _screenSize = Size.zero;

  List<String> get urlImages => _urlImages;
  bool get isDragging => _isDragging;
  Offset get position => _position;
  double get angle => _angle;

  CardProvider() {
    resetUsers();
  }

  void resetUsers() {
    _urlImages = <String>[
      'https://khaligidilit.com/assets/images/cover-LAI%CC%88LA-Khali.jpeg',
      'https://m.media-amazon.com/images/I/61aUOMzwS8L._SL1440_.jpg',
      'https://pbs.twimg.com/media/ExJ-My-XMAE3Ko2.jpg',
      'https://cdns-images.dzcdn.net/images/cover/2818a661c6d533155ce6dffc256b1f51/500x500.jpg',
      'https://cdns-images.dzcdn.net/images/cover/b351f0e935c9c3901f8d893b92ab952a/500x500.jpg',
      'https://cdns-images.dzcdn.net/images/cover/65147b581f2ace9e0f0723ee76e70fda/500x500.jpg',
      'https://cdns-images.dzcdn.net/images/cover/173b96be8ac025fb9578b0139010bc80/500x500.jpg',
      'https://cdns-images.dzcdn.net/images/cover/17a9747927ac3e5ea56f92f635d9180c/500x500.jpg',
    ].reversed.toList();

    notifyListeners();
  }


  void setScreenSize(Size screenSize) => _screenSize = screenSize;

  void startPosition(DragStartDetails details) {
    _isDragging = true;

    notifyListeners();
  }

  void updatePosition(DragUpdateDetails details) {
    _position += details.delta;

    final x = _position.dx;
    _angle = 45 * x / _screenSize.width;
    notifyListeners();
  }

  void endPosition() {
    _isDragging = false;
    notifyListeners();

    final status = getStatus(force: true);


    switch (status) {
      case CardStatus.like:
        like();
        break;
      case CardStatus.disLike:
        dislike();
        break;
      case CardStatus.discovery:
        discovery();
        break;
      default:
        resetPosition();
    }
  }
  void resetPosition() {
    _isDragging = false;
    _position = Offset.zero;
    _angle = 0;

    notifyListeners();
  }

  double getStatusOpacity() {
    final delta = 100;
    final pos = max(_position.dx.abs(), _position.dy.abs());
    final opacity = pos / delta;

    return min(opacity, 1);
  }

  CardStatus? getStatus({bool force = false}) {
    final x = _position.dx;
    final y = _position.dy;
    final forceDiscovery = x.abs() < 20;

    if(force) {
      final delta = 100;

      if (x >= delta) {
        return CardStatus.like;
      } else if ( x <= -delta){
        return CardStatus.disLike;
      } else if ( y <= -delta / 2 && forceDiscovery){
        return CardStatus.discovery;
      }
    } else{
      final delta = 20;

      if(y <= -delta * 2 && forceDiscovery) {
        return CardStatus.discovery;
      } else  if ( x >= delta) {
        return CardStatus.like;
      } else if ( x <= -delta) {
        return CardStatus.disLike;
      }
    }
  }
  void dislike() {
    print("dislike");
    _angle = -20;
    _position -= Offset(2 * _screenSize.width, 0);
    _nextCard();

    notifyListeners();
  }

  void discovery() {
    print("discovery");
    _angle = 0;
    _position -= Offset(0, _screenSize.height);
    _discovery_card();
    Fluttertoast.showToast(
        msg: 'Ajouté',
        toastLength: Toast.LENGTH_SHORT,
        gravity: ToastGravity.TOP,
        timeInSecForIosWeb: 2,
        backgroundColor: Colors.deepPurple,
        textColor: Colors.white
    );

    notifyListeners();
  }

  void like() {
    print("like");
    _angle = 20;
    _position += Offset(2 * _screenSize.width, 0);
    _nextCard();

    notifyListeners();
  }

  Future _nextCard() async {
    if ( _urlImages.isEmpty) return;

    await Future.delayed(Duration(milliseconds: 200));
    _urlImages.removeLast();
    resetPosition();
  }

  Future _discovery_card() async {
    await Future.delayed(Duration(milliseconds: 200));
    resetPosition();
  }
}


class Splash extends StatefulWidget {
  const Splash({Key? key}) : super(key: key);

  @override
  State<Splash> createState() => _SplashState();
}

class _SplashState extends State<Splash> {

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      Timer(Duration(seconds: 2), () {
        Navigator.pushReplacement(context,
            MaterialPageRoute(builder:
                (context) =>MainPage()
            )
        );
      });
    });


  }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Color(0xFF141414),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Container(
              height: 300,
              width: 300,
              child: RiveAnimation.asset('assets/images/new_file (2).riv'),
            ),
            SizedBox(height: 50),
          ],
        ),
      ),
    );
  }
}