screen/application/common/service/Refund.php

<?php
namespace app\common\service;


use addons\epay\library\Service;
use app\common\model\MobileOrder;

class Refund{
    protected $type;
    protected $mobileOrder;
    protected $types=[
        1=>'wechat',
        2=>'alipay',
    ];
    public static function setType(MobileOrder $mobileOrder){
        $a=new self;
        $a->mobileOrder=$mobileOrder;
        $a->type=$mobileOrder['pay_type'];
        return $a;
    }
    public function refund(){
        if(!isset($this->types[$this->type])){
            throw_user('此付款方式不支持退款');
        }
        $this->{$this->types[$this->type]}();
    }
    public function getAmount(){
        return $this->mobileOrder['amount_refund']*100;
    }
    public function wechat(){
        $res=Service::getApp('wechat',Service::refundUrl('wechat',$this->mobileOrder['pay_no']))->refund([
            'transaction_id'=>$this->mobileOrder['pay_no'],
            'out_refund_no'=>$this->mobileOrder['refund_no'],
            'total_fee'=>$this->mobileOrder['amount'],
            'refund_fee'=>$this->getAmount(),
            'op_user_id'=>Service::getWechatOpUser(),
        ]);
        if($res['return_code']!=='SUCCESS'){
            throw_user($res['return_msg']);
        }
        if($res['result_code']!='SUCCESS'){
            throw_user($res['err_code_des']);
        }
    }
}