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

class ThemeProvider with ChangeNotifier {
  static const String _themeModeKey = 'user_theme_mode';
  
  ThemeMode _themeMode = ThemeMode.system;

  ThemeMode get themeMode => _themeMode;

  ThemeProvider() {
    loadThemeMode();
  }

  Future<void> loadThemeMode() async {
    final prefs = await SharedPreferences.getInstance();
    final modeIndex = prefs.getInt(_themeModeKey);
    if (modeIndex != null) {
      _themeMode = ThemeMode.values[modeIndex];
      notifyListeners();
    }
  }

  Future<void> setThemeMode(ThemeMode mode) async {
    if (_themeMode == mode) return;
    
    _themeMode = mode;
    notifyListeners();
    
    final prefs = await SharedPreferences.getInstance();
    await prefs.setInt(_themeModeKey, mode.index);
  }

  String get themeModeName {
    switch (_themeMode) {
      case ThemeMode.system:
        return 'Automatique';
      case ThemeMode.light:
        return 'Clair';
      case ThemeMode.dark:
        return 'Sombre';
    }
  }
}