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<?php |
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declare(strict_types=1); |
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namespace Shlinkio\Shlink\Core\Service; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Psr\Http\Message\UriInterface; |
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use Shlinkio\Shlink\Core\Domain\Resolver\PersistenceDomainResolver; |
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use Shlinkio\Shlink\Core\Entity\ShortUrl; |
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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\Exception\InvalidUrlException; |
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use Shlinkio\Shlink\Core\Exception\NonUniqueSlugException; |
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use Shlinkio\Shlink\Core\Model\ShortUrlMeta; |
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use Shlinkio\Shlink\Core\Options\UrlShortenerOptions; |
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use Shlinkio\Shlink\Core\Repository\ShortUrlRepository; |
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use Shlinkio\Shlink\Core\Util\TagManagerTrait; |
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use Shlinkio\Shlink\Core\Util\UrlValidatorInterface; |
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use Throwable; |
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use function array_reduce; |
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class UrlShortener implements UrlShortenerInterface |
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{ |
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use TagManagerTrait; |
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/** @var EntityManagerInterface */ |
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private $em; |
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/** @var UrlShortenerOptions */ |
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private $options; |
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/** @var UrlValidatorInterface */ |
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private $urlValidator; |
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public function __construct( |
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UrlValidatorInterface $urlValidator, |
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EntityManagerInterface $em, |
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UrlShortenerOptions $options |
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) { |
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$this->urlValidator = $urlValidator; |
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$this->em = $em; |
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$this->options = $options; |
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} |
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/** |
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* @param string[] $tags |
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* @throws NonUniqueSlugException |
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* @throws InvalidUrlException |
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* @throws Throwable |
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*/ |
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public function urlToShortCode(UriInterface $url, array $tags, ShortUrlMeta $meta): ShortUrl |
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{ |
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$url = (string) $url; |
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// First, check if a short URL exists for all provided params |
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$existingShortUrl = $this->findExistingShortUrlIfExists($url, $tags, $meta); |
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if ($existingShortUrl !== null) { |
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return $existingShortUrl; |
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} |
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// If the URL validation is enabled, check that the URL actually exists |
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if ($this->options->isUrlValidationEnabled()) { |
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$this->urlValidator->validateUrl($url); |
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} |
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$this->em->beginTransaction(); |
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$shortUrl = new ShortUrl($url, $meta, new PersistenceDomainResolver($this->em)); |
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$shortUrl->setTags($this->tagNamesToEntities($this->em, $tags)); |
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try { |
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$this->verifyShortCodeUniqueness($meta, $shortUrl); |
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$this->em->persist($shortUrl); |
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$this->em->flush(); |
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$this->em->commit(); |
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} catch (Throwable $e) { |
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if ($this->em->getConnection()->isTransactionActive()) { |
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$this->em->rollback(); |
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$this->em->close(); |
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} |
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throw $e; |
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} |
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return $shortUrl; |
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} |
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private function findExistingShortUrlIfExists(string $url, array $tags, ShortUrlMeta $meta): ?ShortUrl |
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{ |
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if (! $meta->findIfExists()) { |
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return null; |
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} |
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$criteria = ['longUrl' => $url]; |
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if ($meta->hasCustomSlug()) { |
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$criteria['shortCode'] = $meta->getCustomSlug(); |
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} |
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/** @var ShortUrl[] $shortUrls */ |
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$shortUrls = $this->em->getRepository(ShortUrl::class)->findBy($criteria); |
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if (empty($shortUrls)) { |
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return null; |
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} |
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// Iterate short URLs until one that matches is found, or return null otherwise |
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return array_reduce($shortUrls, function (?ShortUrl $found, ShortUrl $shortUrl) use ($tags, $meta) { |
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if ($found !== null) { |
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return $found; |
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} |
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return $shortUrl->matchesCriteria($meta, $tags) ? $shortUrl : null; |
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}); |
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} |
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private function verifyShortCodeUniqueness(ShortUrlMeta $meta, ShortUrl $shortUrlToBeCreated): void |
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{ |
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$shortCode = $shortUrlToBeCreated->getShortCode(); |
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$domain = $meta->getDomain(); |
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/** @var ShortUrlRepository $repo */ |
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$repo = $this->em->getRepository(ShortUrl::class); |
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$otherShortUrlsExist = $repo->shortCodeIsInUse($shortCode, $domain); |
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if ($otherShortUrlsExist && $meta->hasCustomSlug()) { |
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throw NonUniqueSlugException::fromSlug($shortCode, $domain); |
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} |
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if ($otherShortUrlsExist) { |
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$shortUrlToBeCreated->regenerateShortCode(); |
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$this->verifyShortCodeUniqueness($meta, $shortUrlToBeCreated); |
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} |
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} |
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/** |
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* @throws InvalidShortCodeException |
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* @throws EntityDoesNotExistException |
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*/ |
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public function shortCodeToUrl(string $shortCode, ?string $domain = null): ShortUrl |
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{ |
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/** @var ShortUrlRepository $shortUrlRepo */ |
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$shortUrlRepo = $this->em->getRepository(ShortUrl::class); |
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$shortUrl = $shortUrlRepo->findOneByShortCode($shortCode, $domain); |
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if ($shortUrl === null) { |
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throw EntityDoesNotExistException::createFromEntityAndConditions(ShortUrl::class, [ |
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'shortCode' => $shortCode, |
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'domain' => $domain, |
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]); |
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} |
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return $shortUrl; |
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} |
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} |
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shlinkio /
shlink
