import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';

import 'firebase_options.dart';
import 'screens/auth/auth_screen.dart';
import 'screens/firebase_setup_required_screen.dart';
import 'screens/home/auftraege_home_screen.dart';
import 'theme/app_theme.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  try {
    await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
  } catch (e, st) {
    debugPrint('Firebase init failed: $e\n$st');
    runApp(FirebaseSetupRequiredScreen(error: e));
    return;
  }
  runApp(const HandwerksApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Handwerksapp',
      debugShowCheckedModeBanner: false,
      theme: AppTheme.light(),
      home: const _AuthGate(),
    );
  }
}

class _AuthGate extends StatelessWidget {
  const _AuthGate();

  @override
  Widget build(BuildContext context) {
    return StreamBuilder<User?>(
      stream: FirebaseAuth.instance.authStateChanges(),
      builder: (context, snapshot) {
        if (snapshot.connectionState == ConnectionState.waiting) {
          return const Scaffold(
            body: Center(child: CircularProgressIndicator()),
          );
        }
        if (snapshot.hasData) {
          return const AuftraegeHomeScreen();
        }
        return const AuthScreen();
      },
    );
  }
}