// ================================================================
//  main.dart — EcoTrack
//  Sistema de Notificacion Privada de Recoleccion de Residuos
// ================================================================

import 'package:flutter/material.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'screens/login_screen.dart';
import 'screens/home_screen.dart';
import 'screens/route_list_screen.dart';
import 'screens/info_screen.dart';
import 'screens/analytics_screen.dart';
import 'screens/reporte_screen.dart';
import 'screens/mapa_rutas_screen.dart';
import 'firebase_options.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';

const AndroidNotificationChannel _canal = AndroidNotificationChannel(
  'ecotrack_canal',
  'EcoTrack Notificaciones',
  description: 'Notificaciones del camión de basura',
  importance: Importance.high,
);

final FlutterLocalNotificationsPlugin _localNotifications =
    FlutterLocalNotificationsPlugin();

@pragma('vm:entry-point')
Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
}

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

  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
  FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);

  // DESPUÉS
  final androidPlugin =
      _localNotifications.resolvePlatformSpecificImplementation<
          AndroidFlutterLocalNotificationsPlugin>();
  await androidPlugin?.createNotificationChannel(_canal);

  await _localNotifications.initialize(
    const InitializationSettings(
      android: AndroidInitializationSettings('@mipmap/ic_launcher'),
    ),
  );

  // ← EL QUE TE FALTABA
  FirebaseMessaging.onMessage.listen((RemoteMessage message) {
    final notification = message.notification;
    if (notification == null) return;
    _localNotifications.show(
      notification.hashCode,
      notification.title,
      notification.body,
      NotificationDetails(
        android: AndroidNotificationDetails(
          _canal.id,
          _canal.name,
          channelDescription: _canal.description,
          importance: Importance.high,
          priority: Priority.high,
          icon: '@mipmap/ic_launcher',
        ),
      ),
    );
  });

  await FirebaseMessaging.instance.requestPermission(
    alert: true,
    badge: true,
    sound: true,
  );

  runApp(const EcoTrackApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'EcoTrack',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: const Color(0xFF2E7D32),
          brightness: Brightness.light,
        ),
        useMaterial3: true,
        fontFamily: 'Roboto',
        appBarTheme: const AppBarTheme(
          centerTitle: false,
          elevation: 0,
        ),
      ),
      initialRoute: '/',
      routes: {
        '/': (context) => const LoginScreen(),
        '/home': (context) => const HomeScreen(),
        '/routes': (context) => const RouteListScreen(),
        '/info': (context) => const InfoScreen(),
        '/analytics': (context) => const AnalyticsScreen(),
        '/reporte': (context) => const ReporteScreen(),
        '/mapa': (context) => const MapaRutasScreen(),
      },
    );
  }
}