screen/application/common/model/UserCoupon.php

<?php

namespace app\common\model;

use Carbon\Carbon;
use think\db\Query;
use think\Model;

/**
 * @method Query|$this filterUse($used=1)
 * @method Query|$this canUse()
 * @method Query|$this filterExpired($notExpired=true)
 * @property float amount_full
 * @property float amount
 */
class UserCoupon extends Model
{
    protected $autoWriteTimestamp=true;
    protected $updateTime=null;
    protected $append=[
        'no',
        'is_expire',
    ];
    public function bindGoods(){
        return $this->hasMany(UserCouponGoods::class,'coupon_id');
    }
    public function goods(){
        return $this->belongsToMany(Goods::class,UserCouponGoods::class,'goods_id','coupon_id');
    }

    protected static function init()
    {
        self::beforeWrite(function (self $coupon){
            if($coupon['type']==2){
                unset($coupon['amount_full']);
            }
        });
    }

    public static function toUser(User $user,Coupon $coupon){
        /** @var static $userCoupon */
        $userCoupon=$user->coupon()->save([
            'name'=>$coupon['name'],
            'type'=>$coupon['type'],
            'amount'=>$coupon['amount'],
            'amount_full'=>$coupon['amount_full']??null,
            'time_start'=>$coupon['time_start'],
            'time_end'=>$coupon['time_end'],
        ]);
        $goods_ids=$coupon->bindGoods()->column('goods_id');
        $arr=[];
        foreach ($goods_ids as $goods_id){
            $arr[]=[
                'goods_id'=>$goods_id,
            ];
        }
        $userCoupon->bindGoods()->saveAll($arr);
    }

    public function scopeCanUse(Query $query){
        $time=date('Y-m-d H:i:s');
        $query->where('time_start','<',$time)
            ->where('is_use',0)
            ->where('time_end','>',$time);
    }
    public function scopeFilterExpired(Query $query,$notExpire=true){
        $time = date('Y-m-d H:i:s');
        if(!is_null($notExpire)) {
            if ($notExpire) {
                $query->where('time_start', '<', $time)->where('time_end', '>', $time);
            } else {
                $query->where('time_end', '<', $time)->where('is_use', 0);
            }
        }
    }

    public function scopeFilterUse(Query $query,$used=1){
        $query->where('is_use',$used);
    }

    public function needMax(){
        return $this->getAttr('type')==Coupon::T_FULL;
    }

    public function checkCanUse($amount, $goods_id,$allGoods=[]){
        $time=Carbon::now()->toDateTimeString();
        $couponGoods=$this->bindGoods()->column('goods_id');
        if($this['type']==Coupon::T_FULL){
            if(empty($couponGoods)){
                $couponGoods[]=$goods_id;
            }
            if($amount>$this['amount_full'] &&
                in_array($goods_id,$couponGoods) &&
                $this['is_use']==0 &&
                $this['time_start']<$time && $this['time_end']>$time
            ){
                return true;
            }
            return false;
        }elseif ($this['type']==Coupon::T_WU){
            $selfFit=!$this['is_use'] && $this['time_start']<$time && $this['time_end']>$time;
            $goodsAmount=0;
            foreach ($allGoods as $goods){
                if(in_array($goods['goods_id'],$couponGoods)){
                    $goodsAmount=bcadd($goodsAmount,$goods['amount_goods']);
                }
            }
            return $selfFit && $goodsAmount>$this->amount_full;
        }
        return false;
    }

    public function isFor($for){
        switch ($this->getAttr('type')){
            case Coupon::T_WU:
                return 'order'==$for;
            case Coupon::T_FULL:
                return 'info'==$for;
            default:
                return false;
        }
    }

    public function setUse(){
        $this['is_use']=1;
        $this->save();
    }

    public function getNoAttr($id,$model){
        return sprintf('%03d',$model['id']);
    }

    public function getIsExpireAttr($_,$model){
        return time()>strtotime($model['time_end']);
    }

    public static function makeUse($id,$use){
        if(!$id){
            return;
        }
        $coupon=self::where('id',$id)->find();
        if($coupon){
            $coupon['is_use']=$use;
            $coupon->save();
        }
    }
}