<?php

namespace app\common\model\app\vip;

use think\Model;

/**
 * 付费会员卡绑定会员
 */
class CardPrivilege extends Model
{

    // 表名,不含前缀
    protected $name = 'app_vip_card_privilege';
    // 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 = [
    ];

    /**
     * 折扣权益的作用范围：all=全部课程 specify=指定课程
     */
    const DISCOUNT_SCOPE_ALL = 'all';
    const DISCOUNT_SCOPE_SPECIFY = 'specify';

    /**
     * 全部课程作用域下，仅以下课程类型享受会员卡权益
     */
    const SCOPE_ALL_ALLOW_TYPES = ['article','video','audio','live','column'];

    /**
     * 判断商品是否在「全部课程」作用域内
     * 仅 tuzhi_course 表中 article/video/audio/live/column 类型的课程视为受作用
     * @param $goodsId
     * @return bool
     */
    public static function isCourseInScopeAll($goodsId)
    {
        $course = \app\common\model\course\Course::where([
            'id' => $goodsId,
            'uniacid' => UNIACID
        ])->find();

        if (!$course) {
            return false;
        }

        return in_array($course['type'], self::SCOPE_ALL_ALLOW_TYPES);
    }


    /**
     * 获取用户对应的优惠商品折扣
     * @param $userId 用户
     * @param $goodsId 商品ID
     * @return void
     */
    public static function getPrivilegeGoodsDiscount($userId,$goodsId){

        //判断会员卡状态

        $vipConfig = \app\common\model\app\Config::getConfig('vip');

        if($vipConfig['status'] != 1){
            return false;
        }

        $userVipInfo = \app\common\model\app\vip\CardUser::getUserVipInfo($userId);

        if(!$userVipInfo){
            return false;
        }

        //当前会员卡是否开启了折扣权益
        if (empty($userVipInfo['card']) || $userVipInfo['card']['privilege_discount'] != 1) {
            return false;
        }

        $discountScope = isset($userVipInfo['card']['privilege_discount_scope'])
            ? $userVipInfo['card']['privilege_discount_scope']
            : self::DISCOUNT_SCOPE_SPECIFY;

        if ($discountScope == self::DISCOUNT_SCOPE_ALL) {
            //全部课程作用域：仅作用于 article/video/audio/live/column 类型的课程
            if (!self::isCourseInScopeAll($goodsId)) {
                return false;
            }
            return $userVipInfo['card']['privilege_discount_val'];
        }

        //指定课程作用域：保持原有逻辑，需匹配权益商品 IDS
        $privilegeGoodsIds = self::getPrivilegeGoodsIds($userVipInfo['card_id'],'discount');

        if(!in_array($goodsId,$privilegeGoodsIds)){
            return false;
        }

        //返回折扣
        return $userVipInfo['card']['privilege_discount_val'];
    }


    /**
     * 获取会员卡包函的权益商品IDS集合
     * @param $cardId
     * @param $type
     * @return array
     */
    public static function getPrivilegeGoodsIds($cardId,$type){
        $list = self::where([
            'card_id'=>$cardId,
            'type'=>$type
        ])->field('goods_id')->select();

        $ids = [];
        if($list){
            foreach ($list as $item){
                $ids[] = $item['goods_id'];
            }
        }

        return $ids;
    }


}