/**
* @param string $shortCode
* @param string[] $tags
* @return ShortUrl
* @throws InvalidShortCodeException
*/
public function setTagsByShortCode($shortCode, array $tags = [])
{
/** @var ShortUrl $shortUrl */
$shortUrl = $this->em->getRepository(ShortUrl::class)->findOneBy(['shortCode' => $shortCode]);
if (!isset($shortUrl)) {
throw InvalidShortCodeException::fromNotFoundShortCode($shortCode);
}
$shortUrl->setTags($this->tagNamesToEntities($this->em, $tags));
$this->em->flush();
return $shortUrl;
}
/**
* Tries to find the mapped URL for provided short code. Returns null if not found
*
* @param string $shortCode
* @return string|null
* @throws InvalidShortCodeException
*/
public function shortCodeToUrl($shortCode)
{
$cacheKey = sprintf('%s_longUrl', $shortCode);
// Check if the short code => URL map is already cached
if ($this->cache->contains($cacheKey)) {
return $this->cache->fetch($cacheKey);
}
// Validate short code format
if (!preg_match('|[' . $this->chars . "]+|", $shortCode)) {
throw InvalidShortCodeException::fromCharset($shortCode, $this->chars);
}
/** @var ShortUrl $shortUrl */
$shortUrl = $this->em->getRepository(ShortUrl::class)->findOneBy(['shortCode' => $shortCode]);
// Cache the shortcode
if (isset($shortUrl)) {
$url = $shortUrl->getOriginalUrl();
$this->cache->save($cacheKey, $url);
return $url;
}
return null;
}