package security

import (
	"crypto/hmac"
	"crypto/sha1"
	"encoding/base64"
	"fmt"
	"sort"
	"strings"
)

func map2str(data map[string]string, sep string) string {
	var temp []string

	for key, _ := range data {
		temp = append(temp, key)
	}

	sort.Strings(temp)

	var tt []string
	for _, v := range temp {
		tt = append(tt, fmt.Sprintf("%s=%s", v, data[v]))
	}

	return strings.Join(tt, sep)
}

func Sha1OrderlyWithBase64(secret string, data map[string]string) string {
	h := hmac.New(sha1.New, []byte(secret))

	str := map2str(data, "&")

	h.Write([]byte(str))

	return base64.StdEncoding.EncodeToString(h.Sum(nil))
}