/*
 * @Author: i@rysa.cn
 * @Date: 2022-05-14 16:48:14
 * @LastEditTime: 2022-05-14 16:52:09
 * @LastEditors: i@rysa.cn
 * @Description:
 * @FilePath: \go-utils\wechat\mp\serve\serve.go
 */
package serve

import (
	"sort"
	"strings"

	"gitee.com/rysa/go-utils/strutil"
	"gitee.com/rysa/go-utils/wechat/mp/mpconfig"
	"gitee.com/rysa/go-utils/wechat/mp/params"
)

type serve struct {
	*mpconfig.MpConfig
}

func NewServe(cfg *mpconfig.MpConfig) *serve {
	return &serve{cfg}
}

func (mp *serve) CheckSignature(data params.Serve) string {
	var strs = []string{data.Timestamp, data.Nonce, mp.Token}
	sort.Slice(strs, func(i, j int) bool {
		return strs[i] < strs[j]
	})
	str := strings.Join(strs, "")
	if strutil.Sha1(str) == data.Signature {
		return data.Echostr
	}
	return ""
}