init

lib/app/theme/theme_notifier.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+typedef ThemeBuilder = Widget Function();
+
+/// Виджет для подписки на изменение темы приложения
+class ThemeConsumer extends StatelessWidget {
+  const ThemeConsumer({super.key, required this.builder});
+
+  final ThemeBuilder builder;
+
+  @override
+  Widget build(BuildContext context) {
+    return Consumer<ThemeNotifier>(
+      builder: (_, __, ___) {
+        return builder();
+      },
+    );
+  }
+}
+
+/// Класс для управления темой приложения
+final class ThemeNotifier extends ChangeNotifier {
+  ThemeMode _themeMode = ThemeMode.system;
+
+  ThemeMode get themeMode => _themeMode;
+
+  void changeTheme() {
+    _themeMode =
+        _themeMode == ThemeMode.light ? ThemeMode.dark : ThemeMode.light;
+    notifyListeners();
+  }
+}