gosdk/qyweixin/app_pay.go

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package qyweixin
import (
"bytes"
"context"
"crypto/tls"
"errors"
"fmt"
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butil "git.u8t.cn/open/gosdk/util"
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log "github.com/sirupsen/logrus"
"github.com/smbrave/goutil"
"github.com/spf13/cast"
"github.com/wechatpay-apiv3/wechatpay-go/core"
"github.com/wechatpay-apiv3/wechatpay-go/core/option"
"github.com/wechatpay-apiv3/wechatpay-go/utils"
"io/ioutil"
"net/http"
"os"
"time"
)
type PayReq struct {
TotalAmount int64
Title string
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Openid string
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BillNo string
}
type PayConfig struct {
Corpid string
Secret string
Agent string
CertPem string
KeyPem string
MchId string
ApiKey string
SerialNumber string
}
type AppPay struct {
App
cli *core.Client
tlsClient *http.Client
stdClient *http.Client
config *PayConfig
}
func NewAppPay(cfg *PayConfig) *AppPay {
payCertPem, _ := os.ReadFile(cfg.CertPem)
payKeyPem, _ := os.ReadFile(cfg.KeyPem)
pay := &AppPay{}
client, err := pay.withCert(payCertPem, payKeyPem)
if err != nil {
log.Errorf("with cert error :%s", err.Error())
return nil
}
pay.tlsClient = client
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pay.App = *NewApp(&AppConfig{Corpid: cfg.Corpid, Secret: cfg.Secret, Agent: cfg.Agent})
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pay.config = cfg
return pay
}
// 附着商户证书
func (c *AppPay) withCert(cert, key []byte) (*http.Client, error) {
tlsCert, err := tls.X509KeyPair(cert, key)
if err != nil {
return nil, err
}
conf := &tls.Config{
Certificates: []tls.Certificate{tlsCert},
}
trans := &http.Transport{
TLSClientConfig: conf,
}
return &http.Client{
Transport: trans,
}, nil
}
// 发送请求
func (c *AppPay) post(url string, params butil.Params, tls bool) ([]byte, error) {
var httpc *http.Client
if tls {
if c.tlsClient == nil {
return nil, errors.New("tls wepay is not initialized")
}
httpc = c.tlsClient
} else {
httpc = c.stdClient
}
buf := bytes.NewBuffer(params.Encode())
resp, err := httpc.Post(url, "application/xml; charset=utf-8", buf)
if err != nil {
return nil, err
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
return body, nil
}
func (w *AppPay) initPay() error {
// 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 := utils.LoadPrivateKeyWithPath(w.config.KeyPem)
if err != nil {
return 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(w.config.MchId, w.config.SerialNumber, mchPrivateKey, w.config.ApiKey),
}
client, err := core.NewClient(ctx, opts...)
if err != nil {
return err
}
w.cli = client
return nil
}
func (p *AppPay) PayMoney(req *PayReq) error {
if p.cli == nil {
if err := p.initPay(); err != nil {
return err
}
}
param := butil.NewParams()
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if req.BillNo == "" {
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req.BillNo = fmt.Sprintf("QY%s", time.Now().Format("20060102150405"))
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}
param.Set("nonce_str", goutil.RandomStr(32))
param.Set("mch_billno", req.BillNo)
param.Set("mch_id", p.config.MchId)
param.Set("wxappid", p.config.Corpid)
param.Set("agentid", p.config.Agent)
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param.Set("re_openid", req.Openid)
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param.Set("total_amount", cast.ToString(req.TotalAmount))
param.Set("wishing", req.Title)
param.Set("act_name", "企业红包")
param.Set("remark", "企业红包")
param.Set("workwx_sign", param.QySignMd5(p.config.Secret))
param.Set("sign", param.SignMd5(p.config.ApiKey))
reqUrl := "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendworkwxredpack"
rspBody, err := p.post(reqUrl, param, true)
if err != nil {
log.Errorf("Post [%s] [%s] error :%s", reqUrl, string(param.Encode()), err.Error())
return err
}
respParam := butil.NewParams()
respParam.Decode(rspBody)
returnCode := respParam.GetString("return_code")
resultCoce := respParam.GetString("result_code")
if resultCoce == "SUCCESS" && returnCode == "SUCCESS" {
return nil
}
return errors.New(string(respParam.Encode()))
}