<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\WebLink\EventListener;

use Psr\Link\LinkProviderInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\WebLink\HttpHeaderSerializer;

/**
 * Adds the Link HTTP header to the response.
 *
 * @author Kévin Dunglas <dunglas@gmail.com>
 *
 * @final
 */
class AddLinkHeaderListener implements EventSubscriberInterface
{
    private $serializer;

    public function __construct()
    {
        $this->serializer = new HttpHeaderSerializer();
    }

    public function onKernelResponse(FilterResponseEvent $event)
    {
        if (!$event->isMasterRequest()) {
            return;
        }

        $linkProvider = $event->getRequest()->attributes->get('_links');
        if (!$linkProvider instanceof LinkProviderInterface || !$links = $linkProvider->getLinks()) {
            return;
        }

        $event->getResponse()->headers->set('Link', $this->serializer->serialize($links), false);
    }

    /**
     * {@inheritdoc}
     */
    public static function getSubscribedEvents()
    {
        return array(KernelEvents::RESPONSE => 'onKernelResponse');
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NTI3MTUxMDQwNDUzNDU2OSA2OTg4MTcwNDI4NDMzNDk2IDQyNDc4NDY5MjA2NDg0MDk=