runable

lib/app.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'core/theme/app_theme.dart';
+import 'features/home/presentation/pages/home_page.dart';
+import 'features/products/presentation/pages/products_page.dart';
+import 'features/categories/presentation/pages/categories_page.dart';
+import 'features/settings/presentation/pages/settings_page.dart';
+import 'features/settings/presentation/providers/theme_provider.dart';
+import 'shared/widgets/app_bottom_nav.dart';
+
+/// Root application widget
+class RetailApp extends ConsumerStatefulWidget {
+  const RetailApp({super.key});
+
+  @override
+  ConsumerState<RetailApp> createState() => _RetailAppState();
+}
+
+class _RetailAppState extends ConsumerState<RetailApp> {
+  int _currentIndex = 0;
+
+  final List<Widget> _pages = const [
+    HomePage(),
+    ProductsPage(),
+    CategoriesPage(),
+    SettingsPage(),
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    final themeMode = ref.watch(themeModeFromThemeProvider);
+
+    return MaterialApp(
+      title: 'Retail POS',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.lightTheme(),
+      darkTheme: AppTheme.darkTheme(),
+      themeMode: themeMode,
+      home: Scaffold(
+        body: IndexedStack(
+          index: _currentIndex,
+          children: _pages,
+        ),
+        bottomNavigationBar: AppBottomNav(
+          currentIndex: _currentIndex,
+          onTap: (index) {
+            setState(() {
+              _currentIndex = index;
+            });
+          },
+        ),
+      ),
+    );
+  }
+}