api/src/Topxia/Api/Resource/OpenCourse/Lesson.php

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<?php

namespace Topxia\Api\Resource\OpenCourse;

use Topxia\Api\Resource\BaseResource;
use Biz\File\Service\UploadFileService;
use Topxia\Service\Common\ServiceKernel;
use AppBundle\Component\MediaParser\ParserProxy;

class Lesson extends BaseResource
{
    public function filter($lesson)
    {
        $lesson['createdTime'] = date('c', $lesson['createdTime']);
        $lesson['updatedTime'] = date('c', $lesson['updatedTime']);

        $lesson['startTime'] = empty($lesson['startTime']) ? '' : date('c', $lesson['startTime']);
        $lesson['endTime'] = empty($lesson['endTime']) ? '' : date('c', $lesson['endTime']);

        unset($lesson['free']);
        unset($lesson['quizNum']);
        unset($lesson['learnedNum']);
        unset($lesson['viewedNum']);
        unset($lesson['giveCredit']);
        unset($lesson['requireCredit']);
        unset($lesson['homeworkId']);
        unset($lesson['exerciseId']);
        unset($lesson['suggestHours']);
        unset($lesson['testMode']);
        unset($lesson['testStartTime']);

        switch ($lesson['type']) {
            case 'video':
                return $this->getVideoLesson($lesson);
            default:
                return $this->getTextLesson($lesson);
        }
    }

    private function getTextLesson($lesson)
    {
        $lesson['content'] = $this->filterHtml($lesson['content']);
        $template = $this->render('course/lesson-text-content.html.twig', array(
            'content' => $lesson['content'],
        ));
        $lesson['content'] = $template;

        return $lesson;
    }

    protected function getVideoLesson($lesson)
    {
        $line = empty($lesson['hlsLine']) ? '' : $lesson['hlsLine'];

        $mediaId = $lesson['mediaId'];
        $mediaSource = $lesson['mediaSource'];
        $mediaUri = $lesson['mediaUri'];

        if ('self' == $mediaSource) {
            $file = $this->getUploadFileService()->getFullFile($lesson['mediaId']);