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<?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\Bundle\FrameworkBundle\CacheWarmer;
use Psr\Container\ContainerInterface;
use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface;
use Symfony\Component\HttpKernel\CacheWarmer\WarmableInterface;
use Symfony\Contracts\Service\ServiceSubscriberInterface;
use Symfony\Contracts\Translation\TranslatorInterface;
/**
 * Generates the catalogues for translations.
 *
 * @author Xavier Leune <xavier.leune@gmail.com>
 */
class TranslationsCacheWarmer implements CacheWarmerInterface, ServiceSubscriberInterface
{
    private $container;
    private $translator;
    public function __construct(ContainerInterface $container)
    {
        // As this cache warmer is optional, dependencies should be lazy-loaded, that's why a container should be injected.
        $this->container = $container;
    }
    /**
     * {@inheritdoc}
     *
     * @return string[]
     */
    public function warmUp(string $cacheDir)
    {
        if (null === $this->translator) {
            $this->translator = $this->container->get('translator');
        }
        if ($this->translator instanceof WarmableInterface) {
            return (array) $this->translator->warmUp($cacheDir);
        }
        return [];
    }
    /**
     * {@inheritdoc}
     */
    public function isOptional()
    {
        return true;
    }
    /**
     * {@inheritdoc}
     */
    public static function getSubscribedServices()
    {
        return [
            'translator' => TranslatorInterface::class,
        ];
    }
}