import 'dart:math';
import 'package:flutter/material.dart';
import 'weekManager.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Deadliner'),
    );
  }
}

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  late List<WeekManager> _weekManagers;

  @override
  void initState() {
    super.initState();
    final random = Random();
    _weekManagers = List.generate(5, (index) {
      DateTime deadline = DateTime.now().add(Duration(days: random.nextInt(365)));
      DateTime currentDate = DateTime.now().add(Duration(days: random.nextInt(365)));
      return WeekManager(deadline, currentDate);
    });
  }

  Future<void> _incrementCounter() async {
    for (var weekManager in _weekManagers) {
      await Future.delayed(const Duration(milliseconds: 500), () {
        setState(() {
          weekManager.incrementCurrentDate();
          weekManager.updateCurrentDay();
        });
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text('Дедлайнер',
                style: Theme.of(context).textTheme.headlineMedium),
            const SizedBox(height: 20),
            ..._weekManagers.map((weekManager) => Column(
              children: [
                Text('Текущий день недели: ${weekManager.currentDay.name}'),
                Text('Текущая дата: ${weekManager.formatDate(weekManager.currentDate)}'),
                Text('Дней до дедлайна: ${weekManager.daysUntilDeadline}'),
                Text('Дата дедлайна: ${weekManager.formatDate(weekManager.deadline)}'),
                const SizedBox(height: 20),
              ],
            )),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

enum Weekday {
  Monday,
  Tuesday,
  Wednesday,
  Thursday,
  Friday,
  Saturday,
  Sunday
}

extension WeekdayExtension on Weekday {
  String get name {
    switch (this) {
      case Weekday.Monday:
        return 'Понедельник';
      case Weekday.Tuesday:
        return 'Вторник';
      case Weekday.Wednesday:
        return 'Среда';
      case Weekday.Thursday:
        return 'Четверг';
      case Weekday.Friday:
        return 'Пятница';
      case Weekday.Saturday:
        return 'Суббота';
      case Weekday.Sunday:
        return 'Воскресенье';
    }
  }
}