/**
* @param Ebook $ebook
*/
public function preview(Ebook $ebook)
{
header("Content-type: {$ebook->filemime}");
header('Content-Disposition: inline');
header('Content-Transfer-Encoding: binary');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Expires: 0');
readfile($ebook->filePath());
}
