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

import '../../core/theme/app_theme.dart';
import '../../core/widgets/app_widgets.dart';
import '../../shared/widgets/eco_floating_button.dart';
import '../notifications/notification_service.dart';
import '../alerts/alerts_provider.dart';

class CitizenShell extends ConsumerStatefulWidget {
  const CitizenShell({super.key, required this.child});
  final Widget child;

  @override
  ConsumerState<CitizenShell> createState() => _CitizenShellState();
}

class _CitizenShellState extends ConsumerState<CitizenShell> {
  @override
  void initState() {
    super.initState();
    NotificationService.onFcmMessage.addListener(_onGlobalPush);
  }

  @override
  void dispose() {
    NotificationService.onFcmMessage.removeListener(_onGlobalPush);
    super.dispose();
  }

  void _onGlobalPush() {
    final msg = NotificationService.onFcmMessage.lastMessage;
    if (msg?.notification != null) {
      final title = msg!.notification!.title ?? 'Nueva Alerta';
      final body = msg.notification!.body ?? '';

      // Guardamos la alerta en el historial
      ref.read(alertsProvider.notifier).addAlert(title, body);

      // Mostramos un globo de notificación amigable dentro de la app
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            backgroundColor: AppTheme.primaryDark,
            behavior: SnackBarBehavior.floating,
            margin: const EdgeInsets.all(16),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(12),
            ),
            duration: const Duration(seconds: 5),
            content: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  children: [
                    const Icon(
                      Icons.notifications_active,
                      color: Colors.white,
                      size: 20,
                    ),
                    const SizedBox(width: 8),
                    Expanded(
                      child: Text(
                        title,
                        style: const TextStyle(
                          fontWeight: FontWeight.bold,
                          color: Colors.white,
                        ),
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 4),
                Text(
                  body,
                  style: const TextStyle(color: Colors.white70, fontSize: 13),
                ),
              ],
            ),
            action: SnackBarAction(
              label: 'VER',
              textColor: AppTheme.primaryLight,
              onPressed: () => context.go('/alerts'),
            ),
          ),
        );
      }
    }
  }

  int _currentIndex(BuildContext context) {
    final location = GoRouterState.of(context).matchedLocation;
    if (location.startsWith('/alerts')) return 1;
    if (location.startsWith('/house')) return 2;
    if (location.startsWith('/profile')) return 3;
    return 0;
  }

  void _onTap(BuildContext context, int index) {
    switch (index) {
      case 0:
        context.go('/home');
      case 1:
        context.go('/alerts');
      case 2:
        context.go('/house');
      case 3:
        context.go('/profile');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: widget.child,
      floatingActionButton: const EcoFloatingButton(),
      bottomNavigationBar: AppBottomNav(
        currentIndex: _currentIndex(context),
        onTap: (i) => _onTap(context, i),
      ),
    );
  }
}