import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class ThemeProvider extends ChangeNotifier {
  ThemeMode _themeMode = ThemeMode.system;

  ThemeMode get themeMode => _themeMode;

  bool get isDarkMode {
    if (_themeMode == ThemeMode.system) {
      return WidgetsBinding.instance.window.platformBrightness ==
          Brightness.dark;
    }
    return _themeMode == ThemeMode.dark;
  }

  ThemeProvider() {
    _loadThemeMode();
  }

  void setThemeMode(ThemeMode themeMode) async {
    _themeMode = themeMode;
    notifyListeners();

    // Sauvegarder la préférence
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString('themeMode', themeMode.toString());
  }

  void _loadThemeMode() async {
    final prefs = await SharedPreferences.getInstance();
    final themeModeString = prefs.getString('themeMode');

    if (themeModeString != null) {
      switch (themeModeString) {
        case 'ThemeMode.light':
          _themeMode = ThemeMode.light;
          break;
        case 'ThemeMode.dark':
          _themeMode = ThemeMode.dark;
          break;
        case 'ThemeMode.system':
        default:
          _themeMode = ThemeMode.system;
          break;
      }
      notifyListeners();
    }
  }
}