<?php

namespace AppBundle\Extensions\DataTag;

class CourseReviewDataTag extends CourseBaseDataTag implements DataTag
{
    /**
     * 获取一个课程评论.
     *
     * 可传入的参数：
     *   reviewId 必需 课程评论ID
     *
     * @param array $arguments 参数
     *
     * @return array 课程评论
     */
    public function getData(array $arguments)
    {
        $this->checkReviewId($arguments);

        $review = $this->getReviewService()->getReview($arguments['reviewId']);
        if (empty($review)) {
            return null;
        }
        $review['reviewer'] = $this->getUserService()->getUser($review['userId']);
        $reviewer = &$review['reviewer'];
        unset($reviewer['password']);
        unset($reviewer['salt']);
        $review['course'] = $this->getCourseService()->getCourse($review['courseId']);

        return $review;
    }
}
