Рефакторинг

lib/main.dart

@@ -1,4 +1,6 @@
+import 'dart:math';
 import 'package:flutter/material.dart';
+import 'weekManager.dart';
 
 void main() {
   runApp(const MyApp());
@@ -12,10 +14,10 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
       title: 'Flutter Demo',
       theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
         useMaterial3: true,
       ),
-      home: const MyHomePage(title: 'Иванов Вячеслав Николаевич'),
+      home: const MyHomePage(title: 'Deadliner'),
     );
   }
 }
@@ -30,14 +32,30 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  late List<WeekManager> _weekManagers;
 
-  void _incrementCounter() {
-    setState(() {
-      _counter++;
+  @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(
@@ -49,13 +67,18 @@ class _MyHomePageState extends State<MyHomePage> {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
-            ),
+            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),
+              ],
+            )),
           ],
         ),
       ),
@@ -67,3 +90,34 @@ class _MyHomePageState extends State<MyHomePage> {
     );
   }
 }
+
+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';
+    }
+  }
+}

lib/weekManager.dart

@@ -0,0 +1,53 @@
+import 'package:intl/intl.dart';
+import 'main.dart';
+
+class WeekManager {
+  final DateTime _deadline;
+  DateTime _currentDate;
+  Weekday _currentDay;
+
+  WeekManager(this._deadline, this._currentDate)
+      : _currentDay = _getCurrentDayOfWeek(_currentDate);
+
+  DateTime get deadline => _deadline;
+  DateTime get currentDate => _currentDate;
+  Weekday get currentDay => _currentDay;
+
+  static Weekday _getCurrentDayOfWeek(DateTime date) {
+    switch (date.weekday) {
+      case 1:
+        return Weekday.Monday;
+      case 2:
+        return Weekday.Tuesday;
+      case 3:
+        return Weekday.Wednesday;
+      case 4:
+        return Weekday.Thursday;
+      case 5:
+        return Weekday.Friday;
+      case 6:
+        return Weekday.Saturday;
+      case 7:
+        return Weekday.Sunday;
+      default:
+        return Weekday.Monday;
+    }
+  }
+
+  int get daysUntilDeadline {
+    return _deadline.difference(_currentDate).inDays;
+  }
+
+  String formatDate(DateTime date) {
+    DateFormat formatter = DateFormat('dd-MM-yyyy');
+    return formatter.format(date);
+  }
+
+  void incrementCurrentDate() {
+    _currentDate = _currentDate.add(const Duration(days: 1));
+  }
+
+  void updateCurrentDay() {
+    _currentDay = _getCurrentDayOfWeek(_currentDate);
+  }
+}

pubspec.lock

@@ -75,6 +75,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  intl:
+    dependency: "direct main"
+    description:
+      name: intl
+      sha256: "3bc132a9dbce73a7e4a21a17d06e1878839ffbf975568bc875c60537824b0c4d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.18.1"
   leak_tracker:
     dependency: transitive
     description:

pubspec.yaml

@@ -30,6 +30,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
+  intl: ^0.18.0
 
 
   # The following adds the Cupertino Icons font to your application.