public async Task <IActionResult> DeleteFile(DeleteFileAddressModel model) { var(folders, fileName) = _folderSplitter.SplitToFoldersAndFile(model.FolderNames); var folder = await _folderRepo.GetFolderAsOwner(model.AccessToken, model.SiteName, folders); if (folder == null) { return(this.Protocol(ErrorType.NotFound, "Locate folder failed!")); } var file = await _fileRepo.GetFileInFolder(folder, fileName); if (file == null) { return(this.Protocol(ErrorType.NotFound, "The file cannot be found. Maybe it has been deleted.")); } await _fileRepo.DeleteFileById(file.Id); return(this.Protocol(ErrorType.Success, $"Successfully deleted the file '{file.FileName}'")); }