<?php

namespace app\traits;

use app\model\CouponMain;
use app\model\UsingRule;
use app\model\Coupon;

trait CouponMainTrait
{
    /**
     * 检查优惠券状态是否可以领取
     * @param CouponMain $couponMain
     * @return bool
     */
    public function checkCouponMainReceiveStatus(CouponMain $couponMain){
        if (empty($couponMain)) {
            return $this->json(4001, "优惠券不存在");
        }
        if ($couponMain->status != CouponMain::status_on) {
            return $this->json(4002, "优惠券已停用");
        }
        if ($couponMain->on_shelf != CouponMain::on_shelf_on) {
            return $this->json(4003, "优惠券已下架");
        }
        $time = time();
        if (strtotime($couponMain->start_time) > $time) {
            return $this->json(4004, "优惠券还未发行");
        }

        if (strtotime($couponMain->end_time) < $time) {
            return $this->json(4004, "优惠券已结束使用");
        }

        if ($couponMain->using_count <= 0) {
            return $this->json(4004, "优惠券已经被领完了");
        }
        return true;
    }

    /**
     * 统计这个优惠券已经使用了多少张了
     * @param $couponMainId
     * @return int
     */
    public function getCouponMainUsingCount($couponMainId)
    {
        return Coupon::where("coupon_id",$couponMainId)
            ->where("is_verificated",Coupon::is_verificated_on)
            ->count();
    }

    /**
     * 获取商户没有被领取的优惠券  需要扣除多少钱
     * */
    public function getBusinessNotClaimedCoupon($businessCode)
    {
        $date = date("Y-m-d");
        $totalDeductionMoney = 0;
        $couponMain = CouponMain::where("business_code", $businessCode)
            ->where("status", CouponMain::status_on)
            ->where("on_shelf", CouponMain::on_shelf_on)
            ->whereTime("start_time", "<=", $date)
            ->whereTime("end_time", ">=", $date)
            ->whereRaw(" verification_count <  count ")
            ->field("id,(deduction_money * (count - verification_count)) as total_deduction_money")
            ->select()
            ->toArray();

        foreach ($couponMain as $item) {
            $totalDeductionMoney += $item["total_deduction_money"];
        }
        return $totalDeductionMoney;

    }
}