public ActionResult GetThumbnail(string fileId, long size)
{
var guid = Guid.Parse(fileId);
var thumbnail = _filesStorage.GetThumbnail(guid);
if (thumbnail != null)
{
return(File(thumbnail, "image/png"));
}
var actor = _contextService.GetTokenActor(HttpContext);
var fileLoader = _contextService.GetFileLoader(actor);
var fileContent = fileLoader.Download(guid, size);
thumbnail = _documentRender.RenderPage(fileContent, 1, 0.2);
if (thumbnail != null)
{
_fileSaver.PutThumbnailAsync(guid, thumbnail);
}
return(File(thumbnail, "image/png"));
}