import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_database/firebase_database.dart';
import 'package:flutter/material.dart';
import 'package:flutter_background_service/flutter_background_service.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'login_screen.dart';
import 'toast.dart';

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

  @override
  State<ProfilePage> createState() => _ProfilePageState();
}

class _ProfilePageState extends State<ProfilePage> {
  final FirebaseAuth _auth = FirebaseAuth.instance;
  final FirebaseFirestore _firestore = FirebaseFirestore.instance;
  final DatabaseReference _dbRef = FirebaseDatabase.instance.ref();

  String _username = '';
  String _email = '';
  String _obat1 = '-';
  String _obat2 = '-';
  String _jumlahObat1 = '-';
  String _jumlahObat2 = '-';

  bool _loading = true;

  @override
  void initState() {
    super.initState();
    _loadProfileData();
  }

  Future<void> _showLogoutConfirmationDialog() async {
    final shouldLogout = await showDialog<bool>(
      context: context,
      builder:
          (context) => AlertDialog(
            title: const Text('Konfirmasi Logout'),
            content: const Text(
              'Apakah Anda yakin ingin logout dari akun ini?',
            ),
            actions: [
              TextButton(
                onPressed: () => Navigator.of(context).pop(false),
                child: const Text('Tidak'),
              ),
              TextButton(
                onPressed: () => Navigator.of(context).pop(true),
                child: const Text('Ya'),
              ),
            ],
          ),
    );

    if (shouldLogout == true) {
      _logout();
    }
  }

  Future<void> _loadProfileData() async {
    final user = _auth.currentUser;
    if (user == null) {
      setState(() {
        _loading = false;
      });
      return;
    }
    final uid = user.uid;

    final userDoc = await _firestore.collection('users').doc(uid).get();
    final dataUser = userDoc.data();
    final username =
        dataUser != null && dataUser.containsKey('username')
            ? dataUser['username'] as String
            : '';
    final email =
        dataUser != null && dataUser.containsKey('email')
            ? dataUser['email'] as String
            : '';

    Future<String> getObatIfUserMatch(
      String kotak,
      String obatKey,
      String userIdPath,
    ) async {
      final userIdSnap = await _dbRef.child('jadwal/$kotak/$userIdPath').get();
      if (!userIdSnap.exists || userIdSnap.value != uid) return '-';

      final obatSnap = await _dbRef.child('jadwal/$kotak/$obatKey').get();
      if (!obatSnap.exists ||
          (obatSnap.value == null ||
              obatSnap.value.toString().trim().isEmpty)) {
        return '-';
      }
      return obatSnap.value.toString();
    }

    Future<String> getJumlahObatIfUserMatch(
      String kotak,
      String jumlahKey,
      String userIdPath,
    ) async {
      final userIdSnap = await _dbRef.child('jadwal/$kotak/$userIdPath').get();
      if (!userIdSnap.exists || userIdSnap.value != uid) return '-';

      final jumlahSnap = await _dbRef.child('jadwal/$kotak/$jumlahKey').get();
      if (!jumlahSnap.exists ||
          jumlahSnap.value == null ||
          jumlahSnap.value.toString().trim().isEmpty) {
        return '-';
      }
      return jumlahSnap.value.toString();
    }

    final obat1 = await getObatIfUserMatch('kotak1', 'obat1', 'userId');
    final obat2 = await getObatIfUserMatch('kotak2', 'obat2', 'userId');
    final jumlah1 = await getJumlahObatIfUserMatch(
      'kotak1',
      'jumlahObat',
      'userId',
    );
    final jumlah2 = await getJumlahObatIfUserMatch(
      'kotak2',
      'jumlahObat',
      'userId',
    );

    setState(() {
      _username = username;
      _email = email;
      _obat1 = obat1;
      _obat2 = obat2;
      _jumlahObat1 = jumlah1;
      _jumlahObat2 = jumlah2;
      _loading = false;
    });
  }

  Future<void> _logout() async {
    await FirebaseAuth.instance.signOut();
    SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.remove('userId');
    FlutterBackgroundService().invoke("stopService");

    print("✅ Logout berhasil dan background service dihentikan");
    print('❌ userId dihapus dari SharedPreferences');
    Navigator.pushReplacement(
      context,
      MaterialPageRoute(builder: (context) => const LoginScreen()),
    );
    showToast(message: "Successfully signed out");
  }

  Future<void> _refresh() async {
    setState(() {
      _loading = true;
    });
    await _loadProfileData();
  }

  Widget _buildField(String label, String value) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 8),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            label,
            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
          ),
          const SizedBox(height: 6),
          Container(
            width: double.infinity,
            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 14),
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.circular(16),
              boxShadow: const [
                BoxShadow(
                  color: Colors.black12,
                  blurRadius: 4,
                  offset: Offset(0, 2),
                ),
              ],
            ),
            child: Text(
              value,
              style: const TextStyle(fontSize: 18, color: Colors.black87),
            ),
          ),
        ],
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    if (_loading) {
      return const Scaffold(
        backgroundColor: Color(0xFFE9F5EC),
        body: Center(child: CircularProgressIndicator()),
      );
    }

    return Scaffold(
      backgroundColor: const Color(0xFFE9F5EC),
      body: SafeArea(
        child: Column(
          children: [
            Container(
              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
              alignment: Alignment.center,
              width: double.infinity,
              decoration: const BoxDecoration(
                color: Colors.green,
                borderRadius: BorderRadius.only(
                  bottomLeft: Radius.circular(32),
                  bottomRight: Radius.circular(32),
                ),
              ),
              child: const Text(
                'Profile',
                style: TextStyle(
                  fontSize: 24,
                  fontWeight: FontWeight.bold,
                  color: Colors.white,
                ),
              ),
            ),
            Expanded(
              child: RefreshIndicator(
                onRefresh: _refresh,
                child: SingleChildScrollView(
                  padding: const EdgeInsets.symmetric(
                    horizontal: 20,
                    vertical: 24,
                  ),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.stretch,
                    children: [
                      _buildField('Username', _username),
                      _buildField('Email', _email),
                      _buildField('Nama Obat 1', _obat1),
                      _buildField('Nama Obat 2', _obat2),
                      _buildField(
                        'Jumlah Obat Tersisa di Kotak 1',
                        _jumlahObat1,
                      ),
                      _buildField(
                        'Jumlah Obat Tersisa di Kotak 2',
                        _jumlahObat2,
                      ),
                      const SizedBox(height: 30),
                      TextButton(
                        onPressed: _showLogoutConfirmationDialog,
                        style: TextButton.styleFrom(
                          foregroundColor: Colors.red,
                          textStyle: const TextStyle(
                            fontWeight: FontWeight.bold,
                            fontSize: 16,
                          ),
                        ),
                        child: const Text('Logout Akun'),
                      ),
                    ],
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}