package grace

import (
	"crypto/sha256"
	"encoding/base64"
	"strings"
	"time"

	"github.com/google/uuid"
)

var APP_HOST = "http://api-v1-test.newtechlife.net"
var APP_KEY = "ba8b372c5db54a36b589b1b4e5a4d2bf"
var APP_SECRET = "39d30eac79be41ffb6e4d2434b9f6ca8"

// 获取nonce
func GetNonce() string {
	u, err := uuid.NewRandom()
	if err != nil {
		return ""
	}
	// 将 UUID 转换为字符串并去除破折号，得到 32 位字符
	return strings.Replace(u.String(), "-", "", -1)
}

// 获取created
func GetCreated() string {
	now := time.Now()
	eightHoursAgo := now.Add(-8 * time.Hour)
	return eightHoursAgo.Format("2006-01-02T15:04:05Z")
}

// 获取password
func Encrypt(nonce, created, app_secret string) string {
	data := nonce + created + app_secret
	utf8Data := []byte(strings.ToValidUTF8(data, ""))
	h := sha256.New()
	h.Write(utf8Data)
	hashBytes := h.Sum(nil)
	return base64.StdEncoding.EncodeToString(hashBytes)
}

func GetHeader() map[string]string {
	nonce := GetNonce()
	created := GetCreated()
	pwd := Encrypt(nonce, created, APP_SECRET)
	header := make(map[string]string)
	header["Accept"] = "application/json"
	header["Content-Type"] = "application/json"
	header["Authorization"] = "WSSE realm=\"SDP\", profile=\"UsernameToken\", type=\"Appkey\""
	header["X-WSSE"] = "UsernameToken Username=\"" + APP_KEY + "\", PasswordDigest=\"" + pwd + "\", Nonce=\"" + nonce + "\", Created=\"" + created + "\""
	return header
}