public void RemoveFolder(int userId, int folderId)
{
IEnumerable <File> files = _files.GetAllFilesInFolder(folderId).ToList();
IEnumerable <int> foldersIds = _folders.GetDescendantFoldersIds(folderId).ToList();
//!!
IEnumerable <Folder> folders = foldersIds.Select(id => _folders.GetById(id)).ToList();
foreach (var file in files)
{
_files.Remove(file);
}
foreach (var folder in folders)
{
_folders.Remove(folder);
}
var user = _users.GetById(userId);
_storage.DeleteFiles(user, files);
_files.SaveChanges();
_folders.SaveChanges();
}