import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

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

final _rootNavigatorKey = GlobalKey<NavigatorState>();

final router = GoRouter(
  navigatorKey: _rootNavigatorKey,
  initialLocation: '/feed',
  routes: <RouteBase>[
    GoRoute(
      path: '/feed',
      builder: (context, state) => const FeedPage(),
      routes: <RouteBase>[
        GoRoute(
          path: 'details',
          parentNavigatorKey: _rootNavigatorKey,
          builder: (context, state) {
            return const DetailsPage();
          },
        ),
        GoRoute(
          path: 'test',
          parentNavigatorKey: _rootNavigatorKey,
          builder: (context, state) {
            return const Test();
          },
        ),
      ],
    ),
  ],
);

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

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

class Test extends StatelessWidget {
  const Test({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'Test',
              style: Theme.of(context).textTheme.headlineLarge,
            ),
            ElevatedButton(onPressed: () => print('touch'), child: Text('click')),
          ],
        ),
      ),
    );
  }
}

class FeedPage extends StatelessWidget {
  const FeedPage({super.key, this.label, this.child});

  final String? label;
  final Widget? child;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'Feed',
              style: Theme.of(context).textTheme.headlineLarge,
            ),
            ElevatedButton(
              onPressed: () {
                context.go('/feed/details');
              },
              child: const Text('Go to feed/details'),
            ),
          ],
        ),
      ),
    );
  }
}

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

  void _go(BuildContext context) {
    Future.delayed(const Duration(seconds: 2), () {
      context.go('/feed/test');
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'Feed Details',
              style: Theme.of(context).textTheme.headlineLarge,
            ),
            ElevatedButton(
              onPressed: () => _go(context),
              child: const Text('Go to feed/details/test'),
            ),
          ],
        ),
      ),
    );
  }
}