public function execute(Request $request, Config $config, WorkingFolder $workingFolder, ResizedImageRepository $resizedImageRepository, CacheManager $cache) { $fileName = $request->query->get('fileName'); list($requestedWidth, $requestedHeight) = Image::parseSize($request->get('size')); $downloadedFile = new DownloadedFile($fileName, $this->app); $downloadedFile->isValid(); if (!Image::isSupportedExtension(pathinfo($fileName, PATHINFO_EXTENSION))) { throw new InvalidExtensionException('Unsupported image type or not image file'); } header('Cache-Control:'); $response = new Response(); $response->setPublic(); $response->setEtag(dechex($downloadedFile->getTimestamp()) . "-" . dechex($downloadedFile->getSize())); $lastModificationDate = new \DateTime(); $lastModificationDate->setTimestamp($downloadedFile->getTimestamp()); $response->setLastModified($lastModificationDate); if ($response->isNotModified($request)) { return $response; } $imagePreviewCacheExpires = (int) $config->get('cache.imagePreview'); if ($imagePreviewCacheExpires > 0) { $response->setMaxAge($imagePreviewCacheExpires); $expireTime = new \DateTime(); $expireTime->modify('+' . $imagePreviewCacheExpires . 'seconds'); $response->setExpires($expireTime); } $cachedInfoPath = Path::combine($workingFolder->getResourceType()->getName(), $workingFolder->getClientCurrentFolder(), $fileName); $cachedInfo = $cache->get($cachedInfoPath); $resultImage = null; // Try to reuse existing resized image if ($cachedInfo && isset($cachedInfo['width']) && isset($cachedInfo['height'])) { // Fix received aspect ratio $size = Image::calculateAspectRatio($requestedWidth, $requestedHeight, $cachedInfo['width'], $cachedInfo['height']); $resizedImage = $resizedImageRepository->getResizedImageBySize($workingFolder->getResourceType(), $workingFolder->getClientCurrentFolder(), $fileName, $size['width'], $size['height']); if ($resizedImage) { $resultImage = Image::create($resizedImage->getImageData()); } } // Fallback - get and resize the original image if (null === $resultImage) { $resultImage = Image::create($downloadedFile->getContents()); $cache->set($cachedInfoPath, $resultImage->getInfo()); $resultImage->resize($requestedWidth, $requestedHeight); } $response->headers->set('Content-Type', $resultImage->getMimeType() . '; name="' . $downloadedFile->getFileName() . '"'); $response->setContent($resultImage->getData()); return $response; }