hz_crm_api/services/cygx/wx_pay.go

package cygx

import (
	"context"
	"fmt"
	"github.com/wechatpay-apiv3/wechatpay-go/core"
	"github.com/wechatpay-apiv3/wechatpay-go/core/option"
	"github.com/wechatpay-apiv3/wechatpay-go/services/refunddomestic"
	payUtils "github.com/wechatpay-apiv3/wechatpay-go/utils"
	"hongze/hz_crm_api/models/cygx"
	"hongze/hz_crm_api/services/alarm_msg"
	"hongze/hz_crm_api/utils"
	"log"
)

const (
	//MchPKFileName              = "./utils/cert/apiclient_key.pem"
	//MchPKFileName = "../cert/cygx/apiclient_key.pem"
	MchPKFileName              = "../hongze_mfyx/utils/cert/apiclient_key.pem"
	Mchid                      = "1624495680"
	MchCertificateSerialNumber = "5ED2719CFAE5205763034AD80BF4B8A33533C418"
	MchAPIv3Key                = "W1tbnzQrzQ7yRRNuQCIHjis8dgdasKVX"
)

// 微信商户建立连接
func getWechatClient() (context.Context, *core.Client, error) {
	var err error
	defer func() {
		if err != nil {
			fmt.Println(err)
			go alarm_msg.SendAlarmMsg(fmt.Sprint("微信商户建立连接失败 getWechatClient, err：", err.Error()), 2)
		}
	}()
	// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
	mchPrivateKey, err := payUtils.LoadPrivateKeyWithPath(MchPKFileName)
	if err != nil {
		log.Print("load merchant private key error")
		return nil, nil, err
	}
	ctx := context.Background()
	// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	opts := []core.ClientOption{
		option.WithWechatPayAutoAuthCipher(Mchid, MchCertificateSerialNumber, mchPrivateKey, MchAPIv3Key),
	}
	client, err := core.NewClient(ctx, opts...)
	if err != nil {
		log.Printf("new wechat pay client err:%s", err)
		return nil, nil, err
	}
	return ctx, client, nil
}

// 微信商户退款
func RefundsApiService(orderDetail *cygx.CygxOrderResp) (statusCode int, err error) {
	defer func() {
		if err != nil {
			fmt.Println(err)
			go alarm_msg.SendAlarmMsg(fmt.Sprint("微信商户退款失败 RefundsApiService, err：", err.Error()), 2)
		}
	}()
	ctx, client, err := getWechatClient()
	if err != nil {
		log.Printf("getWechatClientt err:%s", err)
		return
	}

	svc := refunddomestic.RefundsApiService{Client: client}
	resp, result, err := svc.Create(ctx,
		refunddomestic.CreateRequest{
			//SubMchid:      core.String(Mchid),
			TransactionId: core.String(orderDetail.OutTradeCode),
			OutTradeNo:    core.String(orderDetail.OrderCode),
			OutRefundNo:   core.String("RE" + orderDetail.OrderCode),
			Reason:        core.String("退款"),
			NotifyUrl:     core.String(utils.Wx_MFYX_Refund_NotifyUrl),
			FundsAccount:  refunddomestic.REQFUNDSACCOUNT_AVAILABLE.Ptr(),
			Amount: &refunddomestic.AmountReq{
				Currency: core.String("CNY"),
				//From: []refunddomestic.FundsFromItem{refunddomestic.FundsFromItem{
				//	Account: refunddomestic.ACCOUNT_AVAILABLE.Ptr(),
				//	Amount:  core.Int64(444),
				//}},
				Refund: core.Int64(int64(orderDetail.PayMoney * 100)),
				Total:  core.Int64(int64(orderDetail.PayMoney * 100)),
			},
		},
	)
	statusCode = result.Response.StatusCode
	if err != nil {
		// 处理错误
		log.Printf("call Create err:%s", err)
	} else {
		// 处理返回结果
		log.Printf("status=%d resp=%s", result.Response.StatusCode, resp)
	}
	return
}