getKeys method

@override Future<List<String>> getKeys({ int? limit, int? offset, })

Returns a list of all keys in the cache.

Throws a CacheException if there is an error retrieving the keys. The limit and offset parameters can be used to paginate the results.

Implementation

@override
Future<List<String>> getKeys({int? limit, int? offset}) async {
  final p = await prefs;
  final keys = p.getKeys();
  final filteredKeys = keys
      .where((key) => key.startsWith('${boxName ?? 'data_cache_x'}_'))
      .map((key) => key.substring('${boxName ?? 'data_cache_x'}_'.length))
      .toList();

  if (limit == null && offset == null) {
    return filteredKeys;
  }

  final startIndex = offset ?? 0;
  final endIndex = limit == null ? filteredKeys.length : startIndex + limit;

  return filteredKeys.skip(startIndex).take(endIndex - startIndex).toList();
}