package common

import (
	"fmt"
	"sort"
	"strings"
)

func ZltxSign(postData map[string]interface{}, secret string) string {
	// 第一步：把key升序
	keys := make([]string, 0, len(postData))
	for key := range postData {
		keys = append(keys, key)
	}
	sort.Strings(keys)

	// 第二步：生成签名
	// 拼接用于生成签名的原始字符串
	rawStr := ""
	for _, key := range keys {
		value := fmt.Sprintf("%v", postData[key])
		if rawStr != "" {
			rawStr += "&"
		}
		rawStr += fmt.Sprintf("%s=%s", key, value)
	}
	rawStr += "&key=" + secret
	return strings.ToUpper(GetMD5Hash(rawStr))
}