package ordercalc

import (
	"crypto/md5"
	"encoding/hex"
	"strings"
)

/**
 * 通知订单状态时签名
 * 签名方式：md5(order_sn-status--time---appid)
 * 2020/08/21
 *gz
 */
func Sign(order_sn, status, time, appid string) string {
	return Md5Password(StringJoin(order_sn, "--", status, "--", time, "--", appid))
}

//密码加密
func Md5Password(password string) string {
	h := md5.New()
	h.Write([]byte(password)) // 需要加密的字符串
	cipher2Str := h.Sum(nil)
	sMd5 := hex.EncodeToString(cipher2Str) // 输出加密结果
	return sMd5
}

/*
 * 连接多个字符串
 * 2019/05/05
 */
func StringJoin(s ...string) string {
	var build strings.Builder
	if len(s) > 0 {
		for _, v := range s {
			build.WriteString(v)
		}
	}

	return build.String()
}