back/internal/api/mobile/pay/wxh5pay/refund_callback.go

package wxh5pay

import (
	"encoding/base64"
	"encoding/xml"
	"io/ioutil"
	"log"
	"net/http"
	"recook/internal/v2/logic/pay"
	"recook/tools"
	"strings"

	"github.com/gin-gonic/gin"
	"github.com/nanjishidu/gomini/gocrypto"
)

type RefundCallbackNotification struct {
	XMLName  xml.Name `xml:"xml"`
	AppID    string   `xml:"appid"`
	MchId    string   `xml:"mch_id"`    // 商户号
	NonceStr string   `xml:"nonce_str"` // 随机字符串
	ReqInfo  string   `xml:"req_info"`
}

type RefundReqInfo struct {
	XMLName      xml.Name `xml:"root"`
	OutRefundNo  string   `xml:"out_refund_no"`
	RefundFee    uint     `xml:"refund_fee"`
	RefundStatus string   `xml:"refund_status"`
	SuccessTime  string   `xml:"success_time"`
}

func (r *RefundReqInfo) IsOk() bool {
	return r.RefundStatus == "SUCCESS"
}

func RefundCallback(c *gin.Context) {
	FAIL := gin.H{
		"return_code": "FAIL",
		"return_msg":  "OK",
	}
	SUCCESS := gin.H{
		"return_code": "SUCCESS",
		"return_msg":  "OK",
	}

	body, err := ioutil.ReadAll(c.Request.Body)
	if err != nil {
		panic(err)
	}
	var notification RefundCallbackNotification
	err = xml.Unmarshal(body, &notification)
	if err != nil {
		log.Println(err)
		c.XML(http.StatusOK, FAIL)
		return
	}

	_ = gocrypto.SetAesKey(strings.ToLower(tools.MD5(APIKey)))
	str, _ := base64.StdEncoding.DecodeString(notification.ReqInfo)
	deBody, err := gocrypto.AesECBDecrypt(str)
	if err != nil {
		log.Println(err)
		c.XML(http.StatusOK, FAIL)
		return
	}

	var info RefundReqInfo
	err = xml.Unmarshal(deBody, &info)
	if err != nil {
		log.Println(err)
		c.XML(http.StatusOK, FAIL)
		return
	}

	if info.IsOk() == false {
		log.Println(info)
		c.XML(http.StatusOK, FAIL)
		return
	}

	if err = pay.AsyncRefundSuccessCallback(info.OutRefundNo); err != nil {
		log.Println(err)
		c.XML(http.StatusOK, FAIL)
		return
	}

	c.XML(http.StatusOK, SUCCESS)
}