mirror of
https://github.com/shlinkio/shlink.git
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90 lines
2.9 KiB
PHP
90 lines
2.9 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Shlinkio\Shlink\Core\Action;
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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\Http\Server\MiddlewareInterface;
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use Psr\Http\Server\RequestHandlerInterface;
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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\Action\Util\ErrorResponseBuilderTrait;
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use Shlinkio\Shlink\Core\Exception\EntityDoesNotExistException;
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use Shlinkio\Shlink\Core\Exception\InvalidShortCodeException;
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use Shlinkio\Shlink\Core\Service\UrlShortenerInterface;
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use Zend\Expressive\Router\Exception\RuntimeException;
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use Zend\Expressive\Router\RouterInterface;
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class QrCodeAction implements MiddlewareInterface
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{
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use ErrorResponseBuilderTrait;
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private const DEFAULT_SIZE = 300;
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private const MIN_SIZE = 50;
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private const MAX_SIZE = 1000;
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/** @var RouterInterface */
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private $router;
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/** @var UrlShortenerInterface */
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private $urlShortener;
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/** @var LoggerInterface */
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private $logger;
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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 server request and return a response, optionally delegating
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* to the next middleware component to create the response.
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*
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* @param Request $request
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* @param RequestHandlerInterface $handler
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*
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* @return Response
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* @throws \InvalidArgumentException
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* @throws RuntimeException
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*/
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public function process(Request $request, RequestHandlerInterface $handler): Response
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{
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// Make sure the short URL exists for this short code
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$shortCode = $request->getAttribute('shortCode');
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try {
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$this->urlShortener->shortCodeToUrl($shortCode);
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} catch (InvalidShortCodeException | EntityDoesNotExistException $e) {
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$this->logger->warning('An error occurred while creating QR code. {e}', ['e' => $e]);
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return $this->buildErrorResponse($request, $handler);
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}
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$path = $this->router->generateUri('long-url-redirect', ['shortCode' => $shortCode]);
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$size = $this->getSizeParam($request);
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$qrCode = new QrCode((string) $request->getUri()->withPath($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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private function getSizeParam(Request $request): int
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{
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$size = (int) $request->getAttribute('size', self::DEFAULT_SIZE);
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if ($size < self::MIN_SIZE) {
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return self::MIN_SIZE;
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}
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return $size > self::MAX_SIZE ? self::MAX_SIZE : $size;
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}
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}
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