public function getItemId(Item $item)
    {
        /* @var $source \AnimeDb\Bundle\CatalogBundle\Entity\Source */
        foreach ($item->getSources() as $source) {
            if (strpos($source->getUrl(), $this->browser->getHost()) === 0 &&
                preg_match(self::REG_ITEM_ID, $source->getUrl(), $match)
            ) {
                return (int)$match['id'];
            }
        }
        return 0;
    }