приколы какие-то

flutter_app/lib/enums/genre.dart

@@ -0,0 +1,6 @@
+enum Genre {
+  rock,
+  pop,
+  jazz,
+  classical,
+}

flutter_app/lib/extensions/album_list_extensions.dart

@@ -0,0 +1,7 @@
+import '../models/album.dart';
+
+extension AlbumListExtensions on List<Album> {
+  List<Album> sortByTitle() {
+    return this..sort((a, b) => a.title.compareTo(b.title));
+  }
+}

flutter_app/lib/main.dart

@@ -1,4 +1,8 @@
 import 'package:flutter/material.dart';
+import 'models/album.dart';
+import 'repositories/album_repository.dart';
+import 'services/album_service.dart';
+import 'widgets/album_card.dart';
 
 void main() {
   runApp(const MyApp());
@@ -7,31 +11,15 @@ void main() {
 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',
+      title: 'Music Reviewer',
       theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // TRY THIS: Try running your application with "flutter run". You'll see
-        // the application has a purple toolbar. Then, without quitting the app,
-        // try changing the seedColor in the colorScheme below to Colors.green
-        // and then invoke "hot reload" (save your changes or press the "hot
-        // reload" button in a Flutter-supported IDE, or press "r" if you used
-        // the command line to start the app).
-        //
-        // Notice that the counter didn't reset back to zero; the application
-        // state is not lost during the reload. To reset the state, use hot
-        // restart instead.
-        //
-        // This works for code too, not just values: Most code changes can be
-        // tested with just a hot reload.
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.purpleAccent),
+        useMaterial3: true
       ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      home: const MyHomePage(title: 'Music Reviewer'),
     );
   }
 }
@@ -39,15 +27,6 @@ class MyApp extends StatelessWidget {
 class MyHomePage extends StatefulWidget {
   const MyHomePage({super.key, required this.title});
 
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
   final String title;
 
   @override
@@ -55,71 +34,34 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  final AlbumRepository _albumRepository = AlbumRepository();
+  List<Album> _albums = [];
 
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
+  @override
+  void initState() {
+    super.initState();
+    _loadAlbums();
+  }
+
+  Future<void> _loadAlbums() async {
+    _albums = await fetchAlbums();
+    setState(() {});
   }
 
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // TRY THIS: Try changing the color here to a specific color (to
-        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
-        // change color while the other colors stay the same.
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
         title: Text(widget.title),
       ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          //
-          // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
-          // action in the IDE, or press "p" in the console), to see the
-          // wireframe for each widget.
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
-            ),
-          ],
-        ),
+      body: ListView.builder(
+        itemCount: _albums.length,
+        itemBuilder: (context, index) {
+          final album = _albums[index];
+          return AlbumCard(album: album);
+        },
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
 }

flutter_app/lib/models/album.dart

@@ -0,0 +1,12 @@
+import 'review.dart';
+import '../enums/genre.dart';
+
+class Album {
+  final String title;
+  final String artist;
+  final Genre genre;
+  final String imageUrl;
+  final List<Review> reviews = [];
+
+  Album(this.title, this.artist, this.genre, this.imageUrl);
+}

flutter_app/lib/models/review.dart

@@ -0,0 +1,6 @@
+class Review {
+  final String text;
+  final int rating;
+
+  Review(this.text, this.rating);
+}

flutter_app/lib/repositories/album_repository.dart

@@ -0,0 +1,20 @@
+import '../models/album.dart';
+import '../models/review.dart';
+
+class AlbumRepository {
+  final List<Album> _albums = [];
+
+  void addAlbum(Album album) {
+    _albums.add(album);
+  }
+
+  void addReview(String albumTitle, Review review) {
+    final album = _albums.firstWhere((album) => album.title == albumTitle);
+    album.reviews.add(review);
+  }
+
+  List<Review> getReviews(String albumTitle) {
+    final album = _albums.firstWhere((album) => album.title == albumTitle);
+    return album.reviews;
+  }
+}

flutter_app/lib/services/album_service.dart

@@ -0,0 +1,12 @@
+import 'dart:async';
+import '../models/album.dart';
+import '../enums/genre.dart';
+
+Future<List<Album>> fetchAlbums() async {
+  await Future.delayed(Duration(seconds: 2));
+  return [
+    Album('The Dark Side of the Moon', 'Pink Floyd', Genre.rock, 'https://upload.wikimedia.org/wikipedia/ru/1/15/The_Dark_Side_of_the_Moon.png'),
+    Album('Thriller', 'Michael Jackson', Genre.pop, 'https://upload.wikimedia.org/wikipedia/ru/5/59/Thriller_cover.jpg'),
+    Album('Back in Black', 'AC/DC', Genre.rock, 'https://www.castlerock.ru/upload/iblock/abe/kx6ghd078yfccf5vzaqc19zcv3lt96jc.jpg'),
+  ];
+}

flutter_app/lib/widgets/album_card.dart

@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+import '../models/album.dart';
+
+class AlbumCard extends StatelessWidget {
+  final Album album;
+
+  const AlbumCard({super.key, required this.album});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      margin: const EdgeInsets.all(8.0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Image.network(
+            album.imageUrl,
+            width: double.infinity,
+            height: 150,
+            fit: BoxFit.cover,
+          ),
+          Padding(
+            padding: const EdgeInsets.all(8.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  album.title,
+                  style: const TextStyle(
+                    fontSize: 18,
+                    fontWeight: FontWeight.bold,
+                    color: Colors.black,
+                  ),
+                ),
+                Text(
+                  album.artist,
+                  style: const TextStyle(
+                    fontSize: 16,
+                    color: Colors.grey,
+                  ),
+                ),
+                Text(
+                  '${album.reviews.length} reviews',
+                  style: const TextStyle(
+                    fontSize: 14,
+                    fontStyle: FontStyle.italic,
+                    color: Colors.grey,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}