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<?php
namespace JsonApi\Routes\StockImages;
use JsonApi\Errors\AuthorizationFailedException;
use JsonApi\Errors\BadRequestException;
use JsonApi\Errors\RecordNotFoundException;
use JsonApi\NonJsonApiController;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Psr7\UploadedFile;
use Studip\Services\ImageValidator;
use Studip\StockImages\Scaler;
use Studip\StockImages\PaletteCreator;
class StockImagesUpload extends NonJsonApiController
{
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
public function __invoke(Request $request, Response $response, $args): Response
{
$resource = \StockImage::find($args['id']);
if (!$resource) {
throw new RecordNotFoundException();
}
if (!Authority::canUploadStockImage($this->getUser($request), $resource)) {
throw new AuthorizationFailedException();
}
$this->handleUpload($request, $resource);
$this->processStockImage($resource);
return $this->redirectToStockImage($response, $resource);
}
private function handleUpload(Request $request, \StockImage $resource): void
{
$uploadedFile = $this->getUploadedFile($request);
if (UPLOAD_ERR_OK !== $uploadedFile->getError()) {
$error = $this->getErrorString($uploadedFile->getError());
throw new BadRequestException($error);
}
$error = self::validate($uploadedFile);
if (!empty($error)) {
throw new BadRequestException($error);
}
$resource->mime_type = $uploadedFile->getClientMediaType();
$resource->size = $uploadedFile->getSize();
$uploadedFile->moveTo($resource->getPath());
$imageSize = getimagesize($resource->getPath());
$resource->width = $imageSize[0];
$resource->height = $imageSize[1];
$resource->store();
}
private function getUploadedFile(Request $request): UploadedFile
{
$files = iterator_to_array($this->getUploadedFiles($request));
if (0 === count($files)) {
throw new BadRequestException('File upload required.');
}
if (count($files) > 1) {
throw new BadRequestException('Multiple file upload not possible.');
}
$uploadedFile = reset($files);
if (UPLOAD_ERR_OK !== $uploadedFile->getError()) {
throw new BadRequestException('Upload error.');
}
return $uploadedFile;
}
/**
* @return iterable<UploadedFile> a list of uploaded files
*/
private function getUploadedFiles(Request $request): iterable
{
foreach ($request->getUploadedFiles() as $item) {
if (!is_array($item)) {
yield $item;
continue;
}
foreach ($item as $file) {
yield $file;
}
}
}
private function getErrorString(int $errNo): string
{
$errors = [
UPLOAD_ERR_OK => 'There is no error, the file uploaded with success',
UPLOAD_ERR_INI_SIZE => 'The uploaded file exceeds the upload_max_filesize directive in php.ini',
UPLOAD_ERR_FORM_SIZE => 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form',
UPLOAD_ERR_PARTIAL => 'The uploaded file was only partially uploaded',
UPLOAD_ERR_NO_FILE => 'No file was uploaded',
UPLOAD_ERR_NO_TMP_DIR => 'Missing a temporary folder',
UPLOAD_ERR_CANT_WRITE => 'Failed to write file to disk.',
UPLOAD_ERR_EXTENSION => 'A PHP extension stopped the file upload.',
];
return $errors[$errNo] ?? '';
}
/**
* @return string|null null, if the file is valid, otherwise a string containing the error
*/
private function validate(UploadedFile $file)
{
$validator = $this->container->get(ImageValidator::class);
$mimeType = $file->getClientMediaType();
$fileName = $file->getClientFilename();
if (
!$validator->validateMimeType($mimeType)
|| !$validator->validateName($fileName)
) {
return 'Unsupported media type.';
}
}
/**
* @SuppressWarnings(PHPMD.Superglobals)
*/
private function redirectToStockImage(Response $response, \StockImage $stockImage): Response
{
$pathinfo = $this->getSchema($stockImage)
->getSelfLink($stockImage)
->getStringRepresentation($this->container->get('json-api-integration-urlPrefix'));
$old = \URLHelper::setBaseURL($GLOBALS['ABSOLUTE_URI_STUDIP']);
$url = \URLHelper::getURL($pathinfo, [], true);
\URLHelper::setBaseURL($old);
return $response->withHeader('Location', $url)->withStatus(201);
}
private function processStockImage(\StockImage $resource): void
{
$scaler = new Scaler();
$scaler($resource);
$paletteCreator = new PaletteCreator();
$paletteCreator($resource);
}
}
|
