import 'dart:io' show Platform;

import 'package:android_intent_plus/android_intent.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
import 'package:flutter/foundation.dart' show kIsWeb;
import 'package:package_info_plus/package_info_plus.dart';

import '../../features/web/application/mall_web_host_controller.dart';
import '../storage/storage_service.dart';

/// Clears only disposable presentation data. Credentials and user preferences
/// deliberately remain outside this service.
class CacheClearService {
  const CacheClearService._();

  static Future<void> clear() async {
    await DefaultCacheManager().emptyCache();
    await MallWebHostController.instance.clear();
    await SplashAdControllerPlaceholder.clear();
  }

  static bool get requiresSystemSettings => !kIsWeb && Platform.isAndroid;

  static Future<void> openAndroidSystemSettings() async {
    final packageName = (await PackageInfo.fromPlatform()).packageName;
    await AndroidIntent(
      action: 'android.settings.APPLICATION_DETAILS_SETTINGS',
      data: 'package:$packageName',
    ).launch();
  }
}

/// CacheClearService is used outside Riverpod; the splash entry itself lives
/// in SharedPreferences and is removed here without touching user data.
abstract final class SplashAdControllerPlaceholder {
  static Future<void> clear() async {
    await StorageService.to.preferences.remove('ads.splash.entry');
    await StorageService.to.preferences.remove('ads.splash.daily');
  }
}