clear_datas_expiry.dart

  @override
  Future<void> clearAllDatasWithExpiry() async {
    final directory = await createDirectory();
    final itemDirectory = await Directory('${directory.path}/$_localPath').create();
    final items = await itemDirectory.list().toSet();
    await Future.forEach<FileSystemEntity>(items, (element) async {
      final file = File(element.path);

      final jsonBody = json.decode(await file.readAsString());
      final feedItem = ItemModel.fromJson(jsonBody);
      final _itemDate = feedItem.date ?? DateTime.now().add(Duration(days: _expiryValue + 1));
      if (_itemDate.difference(DateTime.now()).inDays.abs() > _expiryValue) {
        Logger().i('${feedItem.id} has removed');
        await file.delete();
      }
    });
  }