init: 初始化 web_hgdjb_server 项目

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pub/payCenter/config.go

@@ -0,0 +1,63 @@
+package payCenter
+
+import (
+	"crypto/md5"
+	"crypto/subtle"
+	"encoding/hex"
+	"errors"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Conf 与 girl 的 newPayCenter 配置保持一致，App 和 Web 各自加载本进程配置。
+type Conf struct {
+	AppName     string `yaml:"appName"`
+	CallbackUrl string `yaml:"callbackUrl"`
+	ApiUrl      string `yaml:"apiUrl"`
+	MercID      string `yaml:"mercID"`
+	MercSecret  string `yaml:"mercSecret"`
+}
+
+var payCenterConf Conf
+
+func Init(c Conf) {
+	c.ApiUrl = strings.TrimRight(strings.TrimSpace(c.ApiUrl), "/")
+	c.CallbackUrl = strings.TrimRight(strings.TrimSpace(c.CallbackUrl), "/")
+	payCenterConf = c
+}
+
+// validateConfig 仅在支付请求时校验，配置暂未填写不影响其他业务启动。
+func validateConfig(requireCallback bool) error {
+	if payCenterConf.MercID == "" || payCenterConf.MercSecret == "" || !validHTTPURL(payCenterConf.ApiUrl) {
+		return errors.New("新支付中心配置不完整：请配置 newPayCenter.apiUrl、mercID、mercSecret")
+	}
+	if requireCallback && (payCenterConf.AppName == "" || !validHTTPURL(payCenterConf.CallbackUrl)) {
+		return errors.New("新支付中心配置不完整：请配置 newPayCenter.appName、callbackUrl")
+	}
+	return nil
+}
+
+func validHTTPURL(value string) bool {
+	u, err := url.Parse(value)
+	return err == nil && (u.Scheme == "http" || u.Scheme == "https") && u.Host != "" && u.User == nil && u.RawQuery == "" && u.Fragment == ""
+}
+
+func Generate13DigitString() string {
+	return strconv.FormatInt(time.Now().UnixMilli(), 10)
+}
+
+func md5Sign(value string) string {
+	hash := md5.Sum([]byte(value))
+	return hex.EncodeToString(hash[:])
+}
+
+func VerifySign(sign, value string) bool {
+	return subtle.ConstantTimeCompare([]byte(md5Sign(value)), []byte(sign)) == 1
+}
+
+func RChgIDDisassemble(transNo string) string {
+	parts := strings.Split(transNo, "-")
+	return parts[len(parts)-1]
+}