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<?php |
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namespace Shlinkio\Shlink\Core\Action; |
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use Acelaya\ZsmAnnotatedServices\Annotation\Inject; |
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use Endroid\QrCode\QrCode; |
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use Psr\Http\Message\ResponseInterface as Response; |
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use Psr\Http\Message\ServerRequestInterface as Request; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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use Shlinkio\Shlink\Common\Response\QrCodeResponse; |
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use Shlinkio\Shlink\Core\Exception\InvalidShortCodeException; |
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use Shlinkio\Shlink\Core\Service\UrlShortener; |
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use Shlinkio\Shlink\Core\Service\UrlShortenerInterface; |
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use Zend\Expressive\Router\RouterInterface; |
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use Zend\Stratigility\MiddlewareInterface; |
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class QrCodeAction implements MiddlewareInterface |
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{ |
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/** |
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* @var RouterInterface |
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*/ |
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private $router; |
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/** |
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* @var UrlShortenerInterface |
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*/ |
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private $urlShortener; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* QrCodeAction constructor. |
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* @param RouterInterface $router |
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* @param UrlShortenerInterface $urlShortener |
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* @param LoggerInterface $logger |
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* |
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* @Inject({RouterInterface::class, UrlShortener::class, "Logger_Shlink"}) |
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*/ |
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public function __construct( |
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RouterInterface $router, |
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UrlShortenerInterface $urlShortener, |
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LoggerInterface $logger = null |
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) { |
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$this->router = $router; |
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$this->urlShortener = $urlShortener; |
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$this->logger = $logger ?: new NullLogger(); |
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} |
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/** |
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* Process an incoming request and/or response. |
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* |
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* Accepts a server-side request and a response instance, and does |
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* something with them. |
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* |
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* If the response is not complete and/or further processing would not |
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* interfere with the work done in the middleware, or if the middleware |
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* wants to delegate to another process, it can use the `$out` callable |
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* if present. |
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* |
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* If the middleware does not return a value, execution of the current |
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* request is considered complete, and the response instance provided will |
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* be considered the response to return. |
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* |
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* Alternately, the middleware may return a response instance. |
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* |
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* Often, middleware will `return $out();`, with the assumption that a |
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* later middleware will return a response. |
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* |
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* @param Request $request |
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* @param Response $response |
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* @param null|callable $out |
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* @return null|Response |
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*/ |
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public function __invoke(Request $request, Response $response, callable $out = null) |
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{ |
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// Make sure the short URL exists for this short code |
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$shortCode = $request->getAttribute('shortCode'); |
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try { |
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$shortUrl = $this->urlShortener->shortCodeToUrl($shortCode); |
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if (! isset($shortUrl)) { |
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return $out($request, $response->withStatus(404), 'Not Found'); |
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} |
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} catch (InvalidShortCodeException $e) { |
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$this->logger->warning('Tried to create a QR code with an invalid short code' . PHP_EOL . $e); |
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return $out($request, $response->withStatus(404), 'Not Found'); |
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} |
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$path = $this->router->generateUri('long-url-redirect', ['shortCode' => $shortCode]); |
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$size = $this->getSizeParam($request); |
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$qrCode = new QrCode($request->getUri()->withPath($path)->withQuery('')); |
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$qrCode->setSize($size) |
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->setPadding(0); |
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return new QrCodeResponse($qrCode); |
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} |
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/** |
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* @param Request $request |
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* @return int |
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*/ |
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protected function getSizeParam(Request $request) |
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{ |
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$size = intval($request->getAttribute('size', 300)); |
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if ($size < 50) { |
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return 50; |
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} elseif ($size > 1000) { |
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return 1000; |
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} |
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return $size; |
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} |
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} |
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shlinkio /
shlink
