yuleduiPay/service/pay.go

package service

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net/http"
	"strconv"
	"time"
	"yuleduiPay/repo"
	"yuleduiPay/service/po"
	"yuleduiPay/service/vo"

	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/net/ghttp"
	"github.com/gogf/gf/v2/os/gtime"
	"github.com/gogf/gf/v2/util/guid"
)

type Pay struct {
	payOrderRepo repo.PayOrder
	shopRepo     repo.Shop
}

var YSEPAYURL = "https://qrcode.ysepay.com/gateway.do" //银盛的微信小程序接口地址

// 微信小程序，扫码支付
func (t *Pay) PayQrCode(r *ghttp.Request) {
	g.Log().Line().Print(nil, r.Request) //todo
	req := vo.PayQrCodeReq{}
	err := r.Parse(&req)
	if err != nil {
		r.SetError(err)
		return
	}
	g.Log().Line().Printf(nil, "%+v", req)
	//获取订单信息
	shop, err := t.shopRepo.GetShopById(req.ShopId)
	if err != nil {
		r.SetError(err)
		return
	}
	//创建订单记录
	payOrder := po.PayOrder{}
	payOrder.OrderId = guid.S()
	payOrder.Price, err = strconv.ParseFloat(req.Price, 64)
	if err != nil {
		r.SetError(err)
		return
	}
	payOrder.Amount, err = strconv.ParseFloat(req.Amount, 64)
	if err != nil {
		r.SetError(err)
		return
	}
	payOrder.Bean, err = strconv.ParseFloat(req.Bean, 64)
	if err != nil {
		r.SetError(err)
		return
	}
	payOrder.OpenId = req.OpenId
	payOrder.Mobile = req.Mobile
	payOrder.ShopId = req.ShopId
	payOrder.Created = gtime.Now()
	payOrder.Updated = payOrder.Created

	err = t.payOrderRepo.CreatePayOrder(&payOrder)
	if err != nil {
		r.SetError(err)
		return
	}

	jsonBytes, err := t.ysePayRequestJson(shop, &payOrder) //组织银盛请求json
	if err != nil {
		r.SetError(err)
		return
	}
	//java 项目处理sign字段
	jsonResp, err := t.ysePayPost(jsonBytes) //Post请求银盛接口
	if err != nil {
		r.SetError(err)
		return
	}
	yseResp, err := t.yseRespHandler(jsonResp) //解析银盛应答报文
	if err != nil {
		r.SetError(err)
		return
	}
	if yseResp.OutTradeNo != payOrder.OpenId {
		errStr := fmt.Sprintf("银盛返回订单号错误，银盛订单号:%s,余乐兑订单号:%s", yseResp.OutTradeNo, payOrder.OpenId)
		r.SetError(errors.New(errStr))
		return
	}
	//更新支付订单表字段
	updates := g.Map{"ysePayStatus": yseResp.TradeStatus, "updated": time.Now()}
	err = t.payOrderRepo.UpdatePayOrderByOrderId(updates, payOrder.OpenId)
	if err != nil {
		r.SetError(err)
	}
	return
}
func (t *Pay) yseRespHandler(jsonResp []byte) (*vo.WeixinPayResp, error) {
	ysePayResp := &vo.PayResp{}
	err := json.Unmarshal(jsonResp, ysePayResp)
	if err != nil {
		return nil, err
	}
	yseWeiXinPayResp := &vo.WeixinPayResp{}
	err = json.Unmarshal([]byte(ysePayResp.YsepayOnlineWeixinPayResponse), yseWeiXinPayResp)
	if yseWeiXinPayResp.Code != "10000" {
		return nil, errors.New("银盛应答返回错误:" + yseWeiXinPayResp.Msg)
	}
	return yseWeiXinPayResp, err
}
func (t *Pay) ysePayPost(jsonBytes []byte) ([]byte, error) {
	resp, err := http.Post(YSEPAYURL, "application/json", bytes.NewReader(jsonBytes))
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	return io.ReadAll(resp.Body)
}

func (t *Pay) ysePayRequestJson(shop *po.Shop, payOrder *po.PayOrder) ([]byte, error) {
	jsonMap := g.Map{}
	//公共请求参数
	jsonMap["method"] = "ysepay.online.weixin.pay" //接口名称,固定值
	certId := g.Cfg().MustGet(nil, "ysepay.CERTID")

	jsonMap["partner_id"] = certId                                  //在银盛支付开设的服务商商户号
	jsonMap["timestamp"] = time.Now().Format("2006-01-02 15:04:05") //发送请求的时间
	jsonMap["charset"] = "UTF-8"                                    //商户网站使用的编码格式
	jsonMap["sign_type"] = "SM"                                     //报文签名算法
	//sign 需要java项目处理 todo
	notifyUrl := g.Cfg().MustGet(nil, "ysepay.notifyUrl")
	jsonMap["notify_url"] = notifyUrl //交易成功异步通知到商户的后台地址
	jsonMap["version"] = "3.0"        //接口版本

	//业务请求参数
	businessMap := g.Map{}
	businessMap["orderId"] = payOrder.OpenId                      //订单编号
	businessMap["shopdate"] = payOrder.Created.Format("20060102") //商户系统的交易发生日期格式
	businessMap["subject"] = "余乐兑小程序订单"                           //订单备注
	businessMap["total_amount"] = payOrder.Price                  //该笔订单的资金总额
	businessMap["currency"] = "CNY"                               //默认人民币                                                                          //订单备注
	businessMap["seller_id"] = shop.AccountNumber                 //商户ID
	businessMap["seller_name"] = shop.ShopName                    //店铺名称
	businessMap["timeout_express"] = "1h"                         //设置未付款交易的超时时间，一个小时
	businessMap["sub_openid"] = payOrder.OpenId                   //微信OpenId
	businessMap["is_minipg"] = "1"                                //微信小程序支付:1
	appId := g.Cfg().MustGet(nil, "weixin.appId")
	businessMap["appid"] = appId //微信小程序APPID
	b, err := json.Marshal(businessMap)
	if err != nil {
		return nil, err
	}
	jsonMap["biz_content"] = string(b)
	return json.Marshal(jsonMap)

}