import 'package:daily_ledger/helper/AuthServices.dart';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class AuthProvider with ChangeNotifier {
  final AuthService _authService = AuthService();
  String? _token;
  String? _refreshToken;

  String? get token => _token;

  bool get isAuth {
    return token != null;
  }

  Future<void> login(String username, String password) async {
    final response = await _authService.login(username, password);
    if (response['access'] != null) {
      _token = response['access'];
      _refreshToken =
          response['refresh']; // Assuming refresh token is also returned
      await _saveTokens(_token!, _refreshToken!);
      notifyListeners();
    } else {
      throw Exception('Failed to log in');
    }
  }

  Future<void> logout() async {
    _token = null;
    _refreshToken = null;
    await _clearTokens();
    notifyListeners();
  }

  Future<void> _saveTokens(String token, String refreshToken) async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString('token', token);
    await prefs.setString('refreshToken', refreshToken);
  }

  Future<void> _clearTokens() async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.remove('token');
    await prefs.remove('refreshToken');
  }

  Future<void> autoLogin() async {
    final prefs = await SharedPreferences.getInstance();
    if (prefs.containsKey('token')) {
      _token = prefs.getString('token');
      _refreshToken =
          prefs.getString('refreshToken'); // Load refresh token if needed
      notifyListeners();
    }
  }
}