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 {
  final p = await prefs;
  final result = <String, CacheItem<dynamic>>{};

  for (final key in keys) {
    final prefKey = _getKey(key);
    if (p.containsKey(prefKey)) {
      final String? jsonString = p.getString(prefKey);
      if (jsonString == null) continue;

      Map<String, dynamic> jsonMap;
      if (enableEncryption) {
        final decryptedValue = _decrypt(jsonString);
        jsonMap = jsonDecode(decryptedValue);
      } else {
        jsonMap = jsonDecode(jsonString);
      }

      result[key] = CacheItem<dynamic>(
        value: jsonMap['value'],
        expiry: jsonMap['expiry'] != null
            ? DateTime.fromMillisecondsSinceEpoch(jsonMap['expiry'] as int)
            : null,
      );
    }
  }

  return result;
}