<?php

namespace app\common\model\app\exam;
use think\Model;

/**
 * 题库练习订阅
 */
class ExercisesSubscribe extends Model
{
    // 表名,不含前缀
    protected $name = 'app_exam_exercises_subscribe';
    // 自动写入时间戳字段
    protected $autoWriteTimestamp = false;
    // 定义时间戳字段名
    protected $createTime = false;
    protected $updateTime = false;
    // 追加属性
    protected $append = [
    ];


    /**
     * 增加订阅
     * @param $userId 用户
     * @param $exercisesId 练习ID
     * @param $type 订阅方式
     * @return void
     */
    public static function subscribe($userId,$exercisesId,$type = ''){
        self::insert([
            'user_id'=>$userId,
            'exercises_id'=>$exercisesId,
            'type'=>$type,
            'createtime'=>time(),
            'uniacid'=>UNIACID
        ]);
    }

    /**
     * 判断是否订阅
     * @param $userId
     * @param $exercisesId
     * @return void
     */
    public static function checkSubscribe($userId,$exercisesId){
        $data = self::where([
            'user_id'=>$userId,
            'exercises_id'=>$exercisesId
        ])->find();

        if($data){
            return true;
        }

        return false;
    }

    /**
     * 检查是否有使用权限
     * @param $userId
     * @param $exercisesId
     * @return void
     */
    public static function checkAuth($userId,$exercisesId){

        $exercises = \app\common\model\app\exam\Exercises::where([
            'id'=>$exercisesId,
            'status'=>1
        ])->find();

        if(!$exercises){
            return false;
        }

        switch ($exercises['sales_type']){
            case 1:
                return true;
                break;
            case 2:
                $isSubscribe = self::checkSubscribe($userId,$exercisesId);
                if($isSubscribe){
                    return true;
                }
                break;
            case 3:
                //关联课程 判断课程订阅权限
                if(\app\common\model\user\Subscription::getSubscriptionAuth($userId,$exercises['bind_course'])){
                    return true;
                }
                break;
        }


        return false;
    }
}