public function execute(Request $request, Config $config, WorkingFolder $workingFolder, ResizedImageRepository $resizedImageRepository, CacheManager $cache)
{
$fileName = (string) $request->query->get('fileName');
list($requestedWidth, $requestedHeight) = Image::parseSize((string) $request->get('size'));
$downloadedFile = new DownloadedFile($fileName, $this->app);
$downloadedFile->isValid();
if (!Image::isSupportedExtension(pathinfo($fileName, PATHINFO_EXTENSION), $config->get('thumbnails.bmpSupported'))) {
throw new InvalidExtensionException('Unsupported image type or not image file');
}
Utils::removeSessionCacheHeaders();
$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(), $config->get('thumbnails.bmpSupported'));
$cache->set($cachedInfoPath, $resultImage->getInfo());
$resultImage->resize($requestedWidth, $requestedHeight);
}
$mimeType = $resultImage->getMimeType();
if (in_array($mimeType, array('image/bmp', 'image/x-ms-bmp'))) {
$mimeType = 'image/jpeg';
// Image::getData() by default converts resized images to JPG
}
$response->headers->set('Content-Type', $mimeType . '; name="' . $downloadedFile->getFileName() . '"');
$response->setContent($resultImage->getData());
return $response;
}
