import '../../data/cache/cache_scope.dart';
import '../../data/cache/cache_store.dart';

class SessionScopeManager {
  SessionScopeManager({required HybridCacheStore cacheStore})
    : _cacheStore = cacheStore;

  final HybridCacheStore _cacheStore;
  String? _activeUserId;

  Future<void> activate(String userId) async {
    final normalizedUserId = userId.trim();
    if (normalizedUserId.isEmpty) {
      throw StateError('User id cannot be empty when activating cache scope');
    }

    final previousUserId = _activeUserId;
    if (previousUserId == normalizedUserId) {
      return;
    }

    _activeUserId = normalizedUserId;
    CacheScope.configureProvider(() => 'user:$normalizedUserId');

    if (previousUserId != null && previousUserId != normalizedUserId) {
      await _clearUserCache(previousUserId);
    }
  }

  Future<void> clearActiveUserScope() async {
    final userId = _activeUserId;
    _activeUserId = null;
    CacheScope.resetProvider();
    if (userId != null) {
      await _clearUserCache(userId);
    }
  }

  Future<void> _clearUserCache(String userId) {
    return _cacheStore.clearByPrefix('cache:user:$userId:');
  }
}