import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'config/theme.dart';
import 'services/api_service.dart';
import 'services/background_service.dart';
import 'screens/login_screen.dart';
import 'screens/apps_screen.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  const storage = FlutterSecureStorage();
  final savedUrl = await storage.read(key: 'server_url');
  final savedToken = await storage.read(key: 'auth_token');

  final api = ApiService(baseUrl: savedUrl ?? 'https://localhost');

  if (savedToken != null) {
    api.setToken(savedToken);
  }

  final bgService = BackgroundService();
  await bgService.initialize();
  await bgService.schedulePeriodicCheck();

  runApp(UpdateForgeApp(api: api, hasToken: savedToken != null));
}

class UpdateForgeApp extends HookWidget {
  final ApiService api;
  final bool hasToken;

  const UpdateForgeApp({super.key, required this.api, required this.hasToken});

  @override
  Widget build(BuildContext context) {
    final loggedIn = useState(hasToken && api.isAuthenticated);

    Future<void> saveCredentials() async {
      const storage = FlutterSecureStorage();
      await storage.write(key: 'server_url', value: api.baseUrl);
      await storage.write(key: 'auth_token', value: api.token);
    }

    Future<void> clearCredentials() async {
      const storage = FlutterSecureStorage();
      await storage.delete(key: 'auth_token');
      api.setToken('');
      loggedIn.value = false;
    }

    return MaterialApp(
      title: 'UpdateForge',
      theme: buildAppTheme(),
      debugShowCheckedModeBanner: false,
      home: loggedIn.value
          ? AppsScreen(
              api: api,
              onLogout: clearCredentials,
            )
          : LoginScreen(
              api: api,
              onLogin: () async {
                await saveCredentials();
                loggedIn.value = true;
              },
            ),
    );
  }
}