import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int currentIndex = 0;

  final List<Widget> pages = [
    GridView.builder(
      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 7,
        crossAxisSpacing: 8.0,
        mainAxisSpacing: 8.0,
      ),
      itemBuilder: (context, index) {
        // Example graphically "heavy" widget using text shadows
        return Text(
          "hi",
          style: TextStyle(shadows: [
            Shadow(color: Colors.black.withOpacity(0.8), blurRadius: 4)
          ]),
        );
      },
      itemCount: 7 * 4,
    ),
    SizedBox()
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(child: pages[currentIndex]),
      bottomNavigationBar: NavigationBar(
        labelBehavior: NavigationDestinationLabelBehavior.onlyShowSelected,
        selectedIndex: currentIndex,
        onDestinationSelected: (index) {
          setState(() {
            currentIndex = index;
          });
        },
        destinations: const [
          NavigationDestination(
            icon: Icon(Icons.home_rounded),
            label: 'Home',
          ),
          NavigationDestination(
            icon: Icon(Icons.photo_library_rounded),
            label: 'Gallery',
          ),
        ],
      ),
    );
  }
}