/**
* This method is going to be invoked recursively to generate thumbnails, classes with AlternativeFileTrait are
* going to serve as markers that thumbnail needs to be generated.
*
* {@inheritdoc}
*/
public function onPut(StoredFile $storedFile, \SplFileInfo $file, Repository $repository)
{
$repoConfig = $storedFile->getRepository()->getConfig();
if (!isset($repoConfig['thumbnail_sizes']) || count($repoConfig['thumbnail_sizes']) == 0) {
return self::RESULT_NO_CONFIG_AVAILABLE;
}
$isAlternative = $this->isAlternative($file);
// given $storedFile and $file could be alternative already so we need to resolve
// an original file that we are going to use to generate a thumbnail from
if ($isAlternative) {
/* @var AlternativeFileTrait $file */
$originalStoredFile = $file->getOriginalStoredFile();
$originalFile = $file->getOriginalFile();
$originalStoredFile->addAlternative($storedFile);
} else {
$originalStoredFile = $storedFile;
$originalFile = $file;
}
if (!$originalFile instanceof File) {
// "File" class provides the API we need (like guessing MIME type)
$originalFile = new File($originalFile->getPathname());
}
$isImage = substr($originalFile->getMimeType(), 0, strlen('image/')) == 'image/';
if (!$isImage) {
return self::RESULT_NOT_IMAGE_GIVEN;
}
$lookupKey = $originalFile->getPathname();
if (!isset($this->thumbnailsProgress[$lookupKey])) {
$this->thumbnailsProgress[$lookupKey] = $repoConfig['thumbnail_sizes'];
// thumbnails that have yet to be generated
}
if ($isAlternative) {
// Taking a config of previously generated thumbnail and updating entity to store it.
// We couldn't update it right away when we generate a thumbnail because we haven't yet
// had access to entity
$this->thumbnailsGenerator->updateStoredFileAlternativeMeta($storedFile, $file->getThumbnailConfig());
}
// getting next thumbnail's config that needs to be generated
$thumbnailConfig = array_shift($this->thumbnailsProgress[$lookupKey]);
if (!$thumbnailConfig) {
// making it possible to have thumbnails generated if the same original file is passed to file
// repository
unset($this->thumbnailsProgress[$lookupKey]);
return self::RESULT_NO_MORE_THUMBNAILS;
}
$thumbnailPathname = $this->generateThumbnail($originalFile, $storedFile, $thumbnailConfig);
/* @var AlternativeFileTrait $newFile */
$newFile = null;
if ($originalFile instanceof UploadedFile) {
$newFile = new AlternativeUploadedFile($thumbnailPathname, $originalFile->getClientOriginalName(), $originalFile->getClientMimeType(), filesize($thumbnailPathname));
} else {
$newFile = new AlternativeFile($thumbnailPathname);
}
$newFile->setOriginalFile($originalFile);
$newFile->setOriginalStoredFile($originalStoredFile);
$newFile->setThumbnailConfig($thumbnailConfig);
// recursively creating thumbnails
$this->fileRepository->put($repository->getName(), $newFile);
// ... we cannot modify returned storedFile here already because UoW is already flushed
return self::RESULT_SCHEDULED;
}
