src/AppBundle/Controller/Activity/VideoController.php

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<?php

namespace AppBundle\Controller\Activity;

use Biz\Course\Service\CourseService;
use Biz\Activity\Service\ActivityService;
use Biz\Task\Service\TaskResultService;
use Biz\User\UserException;
use Symfony\Component\HttpFoundation\Request;

class VideoController extends BaseActivityController implements ActivityActionInterface
{
    public function showAction(Request $request, $activity)
    {
        $type = $this->getActivityService()->getActivityConfig($activity['mediaType']);
        $video = $type->get($activity['mediaId']);
        $watchStatus = $type->getWatchStatus($activity);
        if ('error' === $watchStatus['status']) {
            return $this->render('activity/video/limit.html.twig', array(
                'watchStatus' => $watchStatus,
            ));
        }

        $video = $type->prepareMediaUri($video);

        return $this->render('activity/video/show.html.twig', array(
            'activity' => $activity,
            'video' => $video,
        ));
    }

    public function previewAction(Request $request, $task)
    {
        $activity = $this->getActivityService()->getActivity($task['activityId'], $fetchMedia = true);
        $course = $this->getCourseService()->getCourse($task['courseId']);
        $type = $this->getActivityService()->getActivityConfig($activity['mediaType']);

        $activity['ext'] = $type->prepareMediaUri($activity['ext']);
        $context = $this->prepareContext($request, $course, $activity, $task);

        return $this->render('activity/video/preview.html.twig', array(
            'activity' => $activity,
            'course' => $course,
            'task' => $task,
            'user' => $this->getCurrentUser(),
            'context' => $context,
        ));
    }

    /**
     * 获取当前视频活动的文件来源.
     *
     * @param  $activity
     *
     * @return mixed
     */
    protected function getMediaSource($activity)
    {
        return $activity['ext']['mediaSource'];
    }