src/EventListener/AttachmentPreviewListener.php line 31

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  1. <?php
  3. namespace App\EventListener;
  5. use Symfony\Component\HttpKernel\Event\ResponseEvent;
  6. use Symfony\Component\HttpKernel\KernelEvents;
  7. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  8. use Symfony\Component\HttpFoundation\StreamedResponse;
  9. use Symfony\Component\HttpFoundation\BinaryFileResponse;
  10. use Psr\Log\LoggerInterface;
  12. /**
  13. * Event listener to serve image attachments inline (preview) instead of forcing download
  14. */
  15. class AttachmentPreviewListener implements EventSubscriberInterface
  16. {
  17. private $logger;
  19. public function __construct(LoggerInterface $logger)
  20. {
  21. $this->logger = $logger;
  22. }
  24. public static function getSubscribedEvents()
  25. {
  26. return [
  27. KernelEvents::RESPONSE => ['onKernelResponse', 10],
  28. ];
  29. }
  31. public function onKernelResponse(ResponseEvent $event)
  32. {
  33. $request = $event->getRequest();
  34. $response = $event->getResponse();
  36. // Only process attachment download responses
  37. if (!$request->attributes->has('attachmentId')) {
  38. return;
  39. }
  41. // Only process StreamedResponse (UVDesk's download response)
  42. if (!($response instanceof StreamedResponse)) {
  43. return;
  44. }
  46. // Check if Content-Disposition header exists and is set to attachment
  47. $contentDisposition = $response->headers->get('Content-Disposition');
  48. if (!$contentDisposition || strpos($contentDisposition, 'attachment') === false) {
  49. return;
  50. }
  52. // Get content type
  53. $contentType = $response->headers->get('Content-Type');
  55. // Check if it's an image
  56. $isImage = $contentType && in_array($contentType, [
  57. 'image/jpeg',
  58. 'image/jpg',
  59. 'image/png',
  60. 'image/gif',
  61. 'image/webp',
  62. 'image/svg+xml',
  63. ]);
  65. if ($isImage) {
  66. // Change Content-Disposition from attachment to inline for images
  67. $filename = '';
  68. if (preg_match('/filename="([^"]+)"/', $contentDisposition, $matches)) {
  69. $filename = $matches[1];
  70. }
  72. $response->headers->set('Content-Disposition', 'inline; filename="' . $filename . '"');
  74. $this->logger->debug('Changed attachment response to inline for image', [
  75. 'attachment_id' => $request->attributes->get('attachmentId'),
  76. 'content_type' => $contentType,
  77. ]);
  78. }
  79. }
  80. }