src/AppBundle/Controller/Course/CourseBuyController.php

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<?php

namespace AppBundle\Controller\Course;

use AppBundle\Controller\BuyFlowController;
use Biz\Course\Service\CourseService;
use Biz\Course\Service\MemberService;

class CourseBuyController extends BuyFlowController
{
    protected $targetType = 'course';

    protected function needOpenPayment($id)
    {
        $payment = $this->getSettingService()->get('payment');
        $course = $this->getCourseService()->getCourse($id);
        $vipJoinEnabled = false;
        if ($this->isPluginInstalled('Vip') && $this->setting('vip.enabled')) {
            $user = $this->getCurrentUser();
            $vipJoinEnabled = 'ok' === $this->getVipService()->checkUserInMemberLevel($user['id'], $course['vipLevelId']);
        }

        return !$course['isFree'] && !$payment['enabled'] && !$vipJoinEnabled;
    }

    protected function tryFreeJoin($id)
    {
        $this->getCourseService()->tryFreeJoin($id);
    }

    protected function getSuccessUrl($id)
    {
        return $this->generateUrl('my_course_show', array('id' => $id));
    }

    protected function needNoStudentNumTip($id)
    {
        $course = $this->getCourseService()->getCourse($id);

        return $course['maxStudentNum'] - $course['studentNum'] <= 0 && 'live' == $course['type'];
    }

    protected function needApproval($id)
    {
        $course = $this->getCourseService()->getCourse($id);
        $user = $this->getCurrentUser();

        return $course['approval'] && 'approved' !== $user['approvalStatus'];
    }

    protected function isJoined($id)
    {
        $user = $this->getUser();
        $member = $this->getCourseMemberService()->getCourseMember($id, $user['id']);
        if (!empty($member)) {
            $course = $this->getCourseService()->getCourse($id);
            $this->getLogService()->info('course', 'join_course', "加入教学计划《{$course['title']}》", array('userId' => $user['id'], 'courseId' => $course['id'], 'title' => ($course['title']) ? $course['title'] : $course['courseSetTitle']));
        }

        return $member;