src/AppBundle/Twig/ActivityExtension.php

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<?php

namespace AppBundle\Twig;

use Biz\Activity\Service\ActivityService;
use Biz\MaterialLib\Service\MaterialLibService;
use Biz\Player\Service\PlayerService;
use Codeages\Biz\Framework\Context\Biz;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;

class ActivityExtension extends \Twig_Extension
{
    /**
     * @var Biz
     */
    protected $biz;

    /**
     * @var ContainerInterface
     */
    protected $container;

    public function __construct(ContainerInterface $container, Biz $biz)
    {
        $this->container = $container;
        $this->biz = $biz;
    }

    public function getFilters()
    {
        return array(
            new \Twig_SimpleFilter('activity_length_format', array($this, 'lengthFormat')),
            new \Twig_SimpleFilter('convert_minute_and_second', array($this, 'convertMinuteAndSecond')),
            new \Twig_SimpleFilter('prepare_video_media_uri', array($this, 'prepareVideoMediaUri')),
        );
    }

    public function getFunctions()
    {
        return array(
            new \Twig_SimpleFunction('activity_meta', array($this, 'getActivityMeta')),
            new \Twig_SimpleFunction('activity_metas', array($this, 'getActivityMeta')),
            new \Twig_SimpleFunction('can_free_activity_types', array($this, 'getCanFreeActivityTypes')),
            new \Twig_SimpleFunction('ltc_source', array($this, 'findLtcSource')),
            new \Twig_SimpleFunction('flash_player', array($this, 'flashPlayer')),
            new \Twig_SimpleFunction('doc_player', array($this, 'docPlayer')),
            new \Twig_SimpleFunction('ppt_player', array($this, 'pptPlayer')),
            new \Twig_SimpleFunction('activity_visible', array($this, 'isActivityVisible')),
        );
    }

    public function prepareVideoMediaUri($video)
    {
        $type = $this->getActivityService()->getActivityConfig('video');

        return $type->prepareMediaUri($video);
    }

    public function convertMinuteAndSecond($second)