/**
* Generates Download Response
*
* Verifies if file exists and file's type before generating the response.
*
* @param Event $event
* @return BinaryFileResponse
* @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
*/
private function generateDownloadResponse($event)
{
// Check if file exists
$file = $event->getFileName();
$path = $this->get('kernel')->getRootDir() . '/../web/uploads/' . $file;
if (!file_exists($path)) {
throw $this->createNotFoundException();
}
// Check the File Type: http://en.wikipedia.org/wiki/Internet_media_type
$extArr = explode('.', $path);
$ext = end($extArr);
// Clean the filename
$filename = preg_replace("/[^a-z0-9_\\s]+/i", "", $event->getName()) . '.' . $ext;
$mimeType = mime_content_type($path);
// Generate Response
$response = new BinaryFileResponse($path);
$response->headers->set('Content-Type', $mimeType);
$response->setContentDisposition(ResponseHeaderBag::DISPOSITION_ATTACHMENT, $filename);
return $response;
}
