update theme selection

lib/core/database/app_settings_box.dart

@@ -0,0 +1,161 @@
+import 'package:hive_ce/hive.dart';
+
+/// Central app settings storage using Hive
+///
+/// This box stores all app-level settings including:
+/// - Theme settings (seed color, theme mode)
+/// - Language preferences
+/// - Notification settings
+/// - User preferences
+///
+/// See APP_SETTINGS.md for complete documentation.
+class AppSettingsBox {
+  AppSettingsBox._();
+
+  static const String boxName = 'app_settings';
+
+  // ==================== Keys ====================
+
+  // Theme Settings
+  static const String seedColorId = 'seed_color_id';
+  static const String themeMode = 'theme_mode';
+
+  // Language Settings
+  static const String languageCode = 'language_code';
+
+  // Notification Settings
+  static const String notificationsEnabled = 'notifications_enabled';
+  static const String orderNotifications = 'order_notifications';
+  static const String promotionNotifications = 'promotion_notifications';
+  static const String chatNotifications = 'chat_notifications';
+
+  // User Preferences
+  static const String onboardingCompleted = 'onboarding_completed';
+  static const String biometricEnabled = 'biometric_enabled';
+  static const String rememberLogin = 'remember_login';
+
+  // App State
+  static const String lastSyncTime = 'last_sync_time';
+  static const String appVersion = 'app_version';
+  static const String firstLaunchDate = 'first_launch_date';
+
+  // ==================== Box Instance ====================
+
+  static Box<dynamic>? _box;
+
+  /// Get the app settings box instance
+  static Box<dynamic> get box {
+    if (_box == null || !_box!.isOpen) {
+      throw StateError(
+        'AppSettingsBox not initialized. Call AppSettingsBox.init() first.',
+      );
+    }
+    return _box!;
+  }
+
+  /// Initialize the app settings box - call before runApp()
+  static Future<void> init() async {
+    _box = await Hive.openBox<dynamic>(boxName);
+  }
+
+  /// Close the box
+  static Future<void> close() async {
+    await _box?.close();
+    _box = null;
+  }
+
+  // ==================== Generic Getters/Setters ====================
+
+  /// Get a value from the box
+  static T? get<T>(String key, {T? defaultValue}) {
+    return box.get(key, defaultValue: defaultValue) as T?;
+  }
+
+  /// Set a value in the box
+  static Future<void> set<T>(String key, T value) async {
+    await box.put(key, value);
+  }
+
+  /// Remove a value from the box
+  static Future<void> remove(String key) async {
+    await box.delete(key);
+  }
+
+  /// Check if a key exists
+  static bool has(String key) {
+    return box.containsKey(key);
+  }
+
+  /// Clear all settings
+  static Future<void> clear() async {
+    await box.clear();
+  }
+
+  // ==================== Theme Helpers ====================
+
+  /// Get seed color ID
+  static String getSeedColorId() {
+    return get<String>(seedColorId, defaultValue: 'blue') ?? 'blue';
+  }
+
+  /// Set seed color ID
+  static Future<void> setSeedColorId(String colorId) async {
+    await set(seedColorId, colorId);
+  }
+
+  /// Get theme mode index (0=system, 1=light, 2=dark)
+  static int getThemeModeIndex() {
+    return get<int>(themeMode, defaultValue: 0) ?? 0;
+  }
+
+  /// Set theme mode index
+  static Future<void> setThemeModeIndex(int index) async {
+    await set(themeMode, index);
+  }
+
+  // ==================== Language Helpers ====================
+
+  /// Get language code (vi, en)
+  static String getLanguageCode() {
+    return get<String>(languageCode, defaultValue: 'vi') ?? 'vi';
+  }
+
+  /// Set language code
+  static Future<void> setLanguageCode(String code) async {
+    await set(languageCode, code);
+  }
+
+  // ==================== Notification Helpers ====================
+
+  /// Check if notifications are enabled
+  static bool areNotificationsEnabled() {
+    return get<bool>(notificationsEnabled, defaultValue: true) ?? true;
+  }
+
+  /// Set notifications enabled
+  static Future<void> setNotificationsEnabled(bool enabled) async {
+    await set(notificationsEnabled, enabled);
+  }
+
+  // ==================== User Preference Helpers ====================
+
+  /// Check if onboarding is completed
+  static bool isOnboardingCompleted() {
+    return get<bool>(onboardingCompleted, defaultValue: false) ?? false;
+  }
+
+  /// Set onboarding completed
+  static Future<void> setOnboardingCompleted(bool completed) async {
+    await set(onboardingCompleted, completed);
+  }
+
+  /// Check if biometric is enabled
+  static bool isBiometricEnabled() {
+    return get<bool>(biometricEnabled, defaultValue: false) ?? false;
+  }
+
+  /// Set biometric enabled
+  static Future<void> setBiometricEnabled(bool enabled) async {
+    await set(biometricEnabled, enabled);
+  }
+}