import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../providers/auth_provider.dart';
import '../providers/penjadwalan_provider.dart';
import '../providers/kandang_provider.dart';
import '../providers/panen_provider.dart';
import 'dashboard_page.dart';
import 'kontrol_page.dart';
import 'riwayat_page.dart';
import 'panen_debug_screen.dart';

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  int _selectedIndex = 0;
  String? _initializedForUserId;

  final List<Widget> _pages = [
    const DashboardPage(),
    const KontrolPage(),
    const RiwayatPage(),
  ];

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();

    final authProvider = context.read<AuthProvider>();
    final userId = authProvider.user?.uid;

    if (userId == null || userId == _initializedForUserId) return;
    _initializedForUserId = userId;

    // Re-init provider saat app restart/hot restart ketika user masih login.
    WidgetsBinding.instance.addPostFrameCallback((_) async {
      if (!mounted) return;
      try {
        await context.read<PenjadwalanProvider>().initializeWithUser(userId);
        if (!mounted) return;
        await context.read<KandangProvider>().initializeWithUser(userId);
        if (!mounted) return;
        final panenProvider = context.read<PanenProvider>();
        await panenProvider.loadTodaySnapshots();
        await panenProvider.restorePanenHistoryFromFirebase();
      } catch (_) {
        if (!mounted) return;
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
            content: Text('Sinkronisasi data sedang bermasalah, coba lagi.'),
          ),
        );
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    final authProvider = context.watch<AuthProvider>();
    final user = authProvider.user;

    return Scaffold(
      appBar: AppBar(
        elevation: 0,
        backgroundColor: const Color(0xFFF4D03F),
        leading: Padding(
          padding: const EdgeInsets.only(left: 12.0),
          child: Image.asset('assets/icons/telurku.png'),
        ),
        title: Text(
          'TelurKu',
          style: TextStyle(
            color: Colors.grey.shade800,
            fontWeight: FontWeight.bold,
            fontSize: 24,
          ),
        ),
        centerTitle: true,
        actions: [
          Padding(
            padding: const EdgeInsets.only(right: 12.0),
            child: PopupMenuButton<int>(
              onSelected: (value) async {
                if (value == 0) {
                  // Navigate to Debug Screen
                  Navigator.push(
                    context,
                    MaterialPageRoute(
                      builder: (context) => const PanenDebugScreen(),
                    ),
                  );
                } else if (value == 1) {
                  showDialog(
                    context: context,
                    builder: (context) => AlertDialog(
                      shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(16),
                      ),
                      title: Row(
                        children: [
                          Icon(
                            Icons.logout,
                            color: Colors.red.shade600,
                            size: 24,
                          ),
                          const SizedBox(width: 12),
                          Text(
                            'Konfirmasi Logout',
                            style: TextStyle(
                              color: Colors.grey.shade800,
                              fontWeight: FontWeight.bold,
                            ),
                          ),
                        ],
                      ),
                      content: Text(
                        'Apakah Anda yakin ingin logout?',
                        style: TextStyle(color: Colors.grey.shade700),
                      ),
                      actions: [
                        TextButton(
                          onPressed: () => Navigator.pop(context),
                          child: Text(
                            'Batal',
                            style: TextStyle(color: Colors.grey.shade600),
                          ),
                        ),
                        ElevatedButton(
                          onPressed: () async {
                            Navigator.pop(context);

                            // Clear semua user data
                            final penjadwalanProvider =
                                context.read<PenjadwalanProvider>();
                            final kandangProvider =
                                context.read<KandangProvider>();

                            await penjadwalanProvider.clearData();
                            await kandangProvider.clearData();

                            // Logout
                            final success = await authProvider.logout();
                            if (success && mounted) {
                              Navigator.pushReplacementNamed(
                                context,
                                '/landing',
                              );
                            }
                          },
                          style: ElevatedButton.styleFrom(
                            backgroundColor: Colors.red.shade600,
                            foregroundColor: Colors.white,
                            shape: RoundedRectangleBorder(
                              borderRadius: BorderRadius.circular(8),
                            ),
                          ),
                          child: const Text('Logout'),
                        ),
                      ],
                    ),
                  );
                }
              },
              itemBuilder: (context) => [
                PopupMenuItem(
                  value: 0,
                  child: Row(
                    children: [
                      Container(
                        padding: const EdgeInsets.all(8),
                        decoration: BoxDecoration(
                          gradient: LinearGradient(
                            colors: [
                              Colors.orange.shade400,
                              Colors.orange.shade600
                            ],
                          ),
                          borderRadius: BorderRadius.circular(8),
                        ),
                        child: const Icon(
                          Icons.bug_report,
                          color: Colors.white,
                          size: 18,
                        ),
                      ),
                      const SizedBox(width: 12),
                      Text(
                        'Debug Panen',
                        style: TextStyle(
                          color: Colors.orange.shade600,
                          fontWeight: FontWeight.bold,
                          fontSize: 14,
                        ),
                      ),
                    ],
                  ),
                ),
                PopupMenuItem(
                  value: 1,
                  child: Row(
                    children: [
                      Container(
                        padding: const EdgeInsets.all(8),
                        decoration: BoxDecoration(
                          gradient: LinearGradient(
                            colors: [Colors.red.shade400, Colors.red.shade600],
                          ),
                          borderRadius: BorderRadius.circular(8),
                        ),
                        child: const Icon(
                          Icons.logout,
                          color: Colors.white,
                          size: 18,
                        ),
                      ),
                      const SizedBox(width: 12),
                      Text(
                        'Logout',
                        style: TextStyle(
                          color: Colors.red.shade600,
                          fontWeight: FontWeight.bold,
                          fontSize: 14,
                        ),
                      ),
                    ],
                  ),
                ),
              ],
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(16),
              ),
              elevation: 10,
              offset: const Offset(0, 50),
              child: Container(
                decoration: BoxDecoration(
                  gradient: LinearGradient(
                    colors: [Colors.orange.shade500, Colors.orange.shade700],
                  ),
                  borderRadius: BorderRadius.circular(50),
                  boxShadow: [
                    BoxShadow(
                      color: Colors.orange.shade300.withOpacity(0.4),
                      blurRadius: 10,
                      offset: const Offset(0, 4),
                    ),
                  ],
                ),
                child: CircleAvatar(
                  backgroundColor: Colors.transparent,
                  radius: 20,
                  child: Text(
                    (user?.displayName?.isNotEmpty ?? false)
                        ? user!.displayName![0].toUpperCase()
                        : 'U',
                    style: const TextStyle(
                      color: Colors.white,
                      fontWeight: FontWeight.bold,
                      fontSize: 18,
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
      body: _pages[_selectedIndex],
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: _selectedIndex,
        onTap: (index) {
          setState(() {
            _selectedIndex = index;
          });
        },
        items: [
          BottomNavigationBarItem(
            icon: const Icon(Icons.dashboard_outlined),
            activeIcon: const Icon(Icons.dashboard),
            label: 'Dashboard',
          ),
          BottomNavigationBarItem(
            icon: const Icon(Icons.settings_outlined),
            activeIcon: const Icon(Icons.settings),
            label: 'Kontrol',
          ),
          BottomNavigationBarItem(
            icon: const Icon(Icons.history_outlined),
            activeIcon: const Icon(Icons.history),
            label: 'Riwayat',
          ),
        ],
        backgroundColor: Colors.white,
        selectedItemColor: Colors.orange.shade600,
        unselectedItemColor: Colors.grey.shade400,
        elevation: 8,
      ),
    );
  }
}