<?php
// +----------------------------------------------------------------------
// | Niucloud-admin 企业快速开发的多应用管理平台
// +----------------------------------------------------------------------
// | 官方网址：https://www.niucloud.com
// +----------------------------------------------------------------------
// | niucloud团队 版权所有 开源版本可自由商用
// +----------------------------------------------------------------------
// | Author: Niucloud Team
// +----------------------------------------------------------------------

namespace app\service\admin\exam_questions;

use app\model\exam_questions\ExamQuestions;

use core\base\BaseAdminService;


/**
 * 试题服务层
 * Class ExamQuestionsService
 * @package app\service\admin\exam_questions
 */
class ExamQuestionsService extends BaseAdminService
{
    public function __construct()
    {
        parent::__construct();
        $this->model = new ExamQuestions();
    }

    /**
     * 获取试题列表
     * @param array $where
     * @return array
     */
    public function getPage(array $where = [])
    {
        $field = 'id,title,question_type,question_content_type,correct_answer,question_content,option_json,created_at,updated_at';
        $order = 'id desc';

        $search_model = $this->model->withSearch(["title","question_type","created_at"], $where)->field($field)->order($order);
        $list = $this->pageQuery($search_model);
        return $list;
    }

    /**
     * 获取试题信息
     * @param int $id
     * @return array
     */
    public function getInfo(int $id)
    {
        $field = 'id,title,question_type,question_content_type,correct_answer,question_content,option_json,created_at,updated_at';

        $info = $this->model->field($field)->where([['id', "=", $id]])->findOrEmpty()->toArray();
        return $info;
    }

    /**
     * 添加试题
     * @param array $data
     * @return mixed
     */
    public function add(array $data)
    {
        $res = $this->model->create($data);
        return $res->id;

    }

    /**
     * 试题编辑
     * @param int $id
     * @param array $data
     * @return bool
     */
    public function edit(int $id, array $data)
    {

        $this->model->where([['id', '=', $id]])->update($data);
        return true;
    }

    /**
     * 删除试题
     * @param int $id
     * @return bool
     */
    public function del(int $id)
    {
        $model = $this->model->where([['id', '=', $id]])->find();
        $res = $model->delete();
        return $res;
    }


    public function random_questions_list(array $data){

        $singleChoiceIds = $data['single_choice_count'] > 0 ? $this->model
            ->where([['question_type', '=', 'single_choice']])
            ->orderRaw('RAND()')
            ->limit($data['single_choice_count'])
            ->column("id") : [];

        $multipleChoiceIds = $data['multiple_choice_count'] > 0 ? $this->model
            ->where([['question_type', '=', 'multiple_choice']])
            ->orderRaw('RAND()')
            ->limit($data['multiple_choice_count'])
            ->column("id") : [];

        $trueFalseIds = $data['true_false_count'] > 0 ? $this->model
            ->where([['question_type', '=', 'true_false']])
            ->orderRaw('RAND()')
            ->limit($data['true_false_count'])
            ->column("id") : [];

        $questions_ids = array_merge($singleChoiceIds, $multipleChoiceIds, $trueFalseIds);

        return success("随机成功", ['questions_ids' => implode(',', $questions_ids)]);
    }


}