getAll method

@override Future<Map<String, CacheItem>> getAll(List<String> keys)

Retrieves multiple CacheItems associated with the given keys.

Returns a map where the keys are the original keys and the values are the retrieved CacheItems. If a key is not found in the cache, it will not be included in the returned map.

Throws a CacheException if there is an error retrieving the data.

Implementation

@override
Future<Map<String, CacheItem<dynamic>>> getAll(List<String> keys) async {
  if (keys.isEmpty) return {};

  final db = await database;
  final placeholders = List.filled(keys.length, '?').join(',');
  final result = await db.query(
    'cache',
    where: 'key IN ($placeholders)',
    whereArgs: keys,
  );

  final Map<String, CacheItem<dynamic>> cacheItems = {};

  for (final row in result) {
    final key = row['key'] as String;
    final dynamic value = row['value'];
    final int? expiryMillis = row['expiry'] as int?;

    if (value == null) continue;

    if (enableEncryption) {
      final decryptedValue = _decrypt(value as String);
      cacheItems[key] = CacheItem.fromJson(jsonDecode(decryptedValue));
    } else {
      cacheItems[key] = CacheItem<dynamic>(
        value: value,
        expiry: expiryMillis != null
            ? DateTime.fromMillisecondsSinceEpoch(expiryMillis)
            : null,
      );
    }
  }

  return cacheItems;
}