namespace Sonata\MediaBundle\Security;

use Sonata\MediaBundle\Model\MediaInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\Component\Translation\TranslatorInterface;

class UsersDownloadStrategy implements DownloadStrategyInterface
{
    /**
     * @var TokenStorageInterface
     */
    protected $tokenStorage;

    /**
     * @var TranslatorInterface
     */
    protected $translator;

    /**
     * @var array
     */
    protected $users;

    public function __construct(TokenStorageInterface $tokenStorage, TranslatorInterface $translator, array $users = [])
    {
        $this->tokenStorage = $tokenStorage;
        $this->translator = $translator;
        $this->users = $users;
    }

    public function isGranted(MediaInterface $media, Request $request)
    {
        return in_array($this->tokenStorage->getToken()->getUsername(), $this->users);
    }

    public function getDescription()
    {
        return $this->translator->trans(
            'description.users_download_strategy',
            ['%users%' => '<code>'.implode('</code>, <code>', $this->users).'</code>'],
            'SonataMediaBundle'
        );
    }
}