src/Biz/File/Event/UploadFileEventSubscriber.php

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<?php

namespace Biz\File\Event;

use AppBundle\Common\ArrayToolkit;
use Biz\Course\Service\CourseService;
use Biz\File\Service\UploadFileService;
use Codeages\Biz\Framework\Event\Event;
use Topxia\Service\Common\ServiceKernel;
use Codeages\PluginBundle\Event\EventSubscriber;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Biz\Course\Service\LiveReplayService;

class UploadFileEventSubscriber extends EventSubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return array(
            'question.create' => array('onQuestionCreate', 2),
            'question.update' => array('onQuestionUpdate', 2),
            'question.delete' => array('onQuestionDelete', 2),

            'course.delete' => 'onCourseDelete',

            'course.material.create' => 'onMaterialCreate',
            'course.material.update' => 'onMaterialUpdate',
            'course.material.delete' => 'onMaterialDelete',

            'open.course.lesson.delete' => 'onOpenCourseLessonDelete',
            'open.course.delete' => 'onOpenCourseDelete',

            'article.delete' => 'onArticleDelete',
            'group.thread.post.delete' => 'onGroupThreadPostDelete',
            'group.thread.delete' => 'onGroupThreadDelete',
            'course.thread.delete' => 'onCourseThreadDelete',
            'course.thread.post.delete' => 'onCourseThreadPostDelete',
            'thread.delete' => 'onThreadDelete',
            'thread.post.delete' => 'onThreadPostDelete',

            'delete.use.file' => 'onDeleteUseFiles',

            'live.activity.update' => 'onLiveActivityUpdate',
        );
    }

    public function onQuestionCreate(Event $event)
    {
        $question = $event->getSubject();

        if (!$event->hasArgument('argument')) {
            return;
        }
        $argument = $event->getArgument('argument');

        if (empty($argument['attachment'])) {
            return;
        }

        $attachment = $argument['attachment'];