lab2 + lab 3

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());
@@ -10,12 +14,11 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
+      title: 'Music Reviewer',
+      theme: ThemeData.dark().copyWith(
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.purpleAccent)
       ),
-      home: const MyHomePage(title: 'Федоренко Галина Юрьевна'),
+      home: const MyHomePage(title: 'Music Reviewer'),
     );
   }
 }
@@ -30,12 +33,18 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  final AlbumRepository _albumRepository = AlbumRepository();
+  List<Album> _albums = [];
 
-  void _incrementCounter() {
-    setState(() {
-      _counter++;
-    });
+  @override
+  void initState() {
+    super.initState();
+    _loadAlbums();
+  }
+
+  Future<void> _loadAlbums() async {
+    _albums = await fetchAlbums();
+    setState(() {});
   }
 
   @override
@@ -45,24 +54,12 @@ class _MyHomePageState extends State<MyHomePage> {
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
         title: Text(widget.title),
       ),
-      body: Center(
-        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,
-            ),
-          ],
-        ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
+      body: ListView.builder(
+        itemCount: _albums.length,
+        itemBuilder: (context, index) {
+          final album = _albums[index];
+          return AlbumCard(album: album);
+        },
       ),
     );
   }

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 +1,11 @@
+import 'dart:async';
+import '../models/album.dart';
+import '../enums/genre.dart';
+
+Future<List<Album>> fetchAlbums() async {
+  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 +1,56 @@
+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,
+                    color: Colors.grey,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}