initCache function

Future<Box> initCache([ Duration autoDeleteDuration = const Duration(days: 1) ])

Implementation

Future<Box> initCache(
    [Duration autoDeleteDuration = const Duration(days: 1)]) async {
  const boxName = 'story_screen_cache';
  final Directory directory = await getApplicationDocumentsDirectory();
  Hive.init(directory.path);
  final box = await Hive.openBox<dynamic>(boxName);
  final List<String> deleteList = [];
  for (final cacheKey in box.keys) {
    final data =
        box.get(cacheKey) != null ? jsonDecode(box.get(cacheKey)) : null;
    if (data == null) {
      deleteList.add(cacheKey);
    } else {
      final result = _CachedStory.fromJson(data);
      if (result.path != null && result.createdDate != null) {
        if (DateTime.now().difference(result.createdDate!) >=
            autoDeleteDuration) {
          File(result.path!).delete();
          deleteList.add(cacheKey);
        }
      } else {
        deleteList.add(cacheKey);
      }
    }
  }
  box.deleteAll(deleteList);
  return box;
}