feat: add HuPiPay payment support

api/service/payment/hupipay_serive.go

@@ -0,0 +1,72 @@
+package payment
+
+import (
+	"chatplus/core/types"
+	"crypto/md5"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type HuPiPayService struct {
+	appId     string
+	appSecret string
+	host      string
+}
+
+func NewHuPiPay(config *types.AppConfig) *HuPiPayService {
+	return &HuPiPayService{
+		appId:     config.HuPiPayConfig.AppId,
+		appSecret: config.HuPiPayConfig.AppSecret,
+		host:      config.HuPiPayConfig.PayURL,
+	}
+}
+
+// Pay 执行支付请求操作
+func (s *HuPiPayService) Pay(params map[string]string) (string, error) {
+	data := url.Values{}
+	simple := strconv.FormatInt(time.Now().Unix(), 10)
+	params["appid"] = s.appId
+	params["time"] = simple
+	params["nonce_str"] = simple
+	for k, v := range params {
+		data.Add(k, v)
+	}
+	data.Add("hash", s.Sign(params))
+	resp, err := http.PostForm(s.host, data)
+	if err != nil {
+		return "error", err
+	}
+	defer resp.Body.Close()
+	all, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "error", err
+	}
+	return string(all), err
+}
+
+// Sign 签名方法
+func (s *HuPiPayService) Sign(params map[string]string) string {
+	var data string
+	keys := make([]string, 0, 0)
+	params["appid"] = s.appId
+	for key, _ := range params {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	//拼接
+	for _, k := range keys {
+		data = fmt.Sprintf("%s%s=%s&", data, k, params[k])
+	}
+	data = strings.Trim(data, "&")
+	data = fmt.Sprintf("%s%s", data, s.appSecret)
+	m := md5.New()
+	m.Write([]byte(data))
+	sign := fmt.Sprintf("%x", m.Sum(nil))
+	return sign
+}