/**
* @brief offer single file for download
*
* @param string $path full path to file
* @param int $id file id
*/
public static function serveFile($path, $id)
{
\OCP\User::checkLoggedIn();
\OC::$server->getSession()->close();
Bookshelf::add($id);
$dirName = dirname($path);
$fileName = basename($path);
\OC_Files::get($dirName, array($fileName), $_SERVER['REQUEST_METHOD'] == 'HEAD');
}