src/Biz/Course/Event/CourseSetMaterialEventSubscriber.php

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<?php

namespace Biz\Course\Event;

use Biz\Taxonomy\TagOwnerManager;
use Biz\Course\Service\CourseService;
use Biz\Course\Service\MaterialService;
use Biz\File\Service\UploadFileService;
use Codeages\Biz\Framework\Event\Event;
use Codeages\PluginBundle\Event\EventSubscriber;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class CourseSetMaterialEventSubscriber extends EventSubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return array(
            'course-set.delete' => 'onCourseSetDelete',
            'course.delete' => 'onCourseDelete',
            'upload.file.delete' => 'onUploadFileDelete',
            'upload.file.finish' => 'onUploadFileFinish',
            'upload.file.add' => 'onUploadFileFinish',
            'open.course.delete' => 'onOpenCourseDelete',
            'open.course.lesson.create' => 'onOpenCourseLessonCreate',
            'open.course.lesson.update' => 'onOpenCourseLessonUpdate',
            'open.course.lesson.delete' => 'onOpenCourseLessonDelete',
            'open.course.lesson.generate.video.replay' => 'onLiveOpenFileReplay',
        );
    }

    public function onCourseSetDelete(Event $event)
    {
        $courseSet = $event->getSubject();
        $this->getMaterialService()->deleteMaterialsByCourseSetId($courseSet['id']);
    }

    public function onCourseDelete(Event $event)
    {
        $course = $event->getSubject();
        $this->getMaterialService()->deleteMaterialsByCourseId($course['id']);

        $tagOwnerManager = new TagOwnerManager('course', $course['id']);
        $tagOwnerManager->delete();
    }

    public function onUploadFileDelete(Event $event)
    {
        $file = $event->getSubject();

        $materials = $this->getMaterialService()->searchMaterials(
            array('fileId' => $file['id'], 'copyId' => 0),
            array('createdTime' => 'DESC'), 0, PHP_INT_MAX
        );

        if (!$materials) {
            return false;
        }

        foreach ($materials as $key => $material) {
            if ('coursematerial' == $material['source'] && $material['lessonId']) {