/*
 *  用户鉴权
 */

package jwt

import (
	"time"

	"github.com/golang-jwt/jwt/v4"
)

type JwtStruct struct {
	SecretKey string
	TimeOut   int64
}

var UserJwt = &JwtStruct{
	SecretKey: "jianyuservice", //保持一致
	TimeOut:   600,
}

func (this *JwtStruct) GetToken(payloads map[string]interface{}) (string, error) {
	now := time.Now().Add(-10 * time.Second).Unix() //当前时间往前10s  iat时间要在相应服务器时间之前 否则会报错Token used before issued
	claims := make(jwt.MapClaims)
	claims["exp"] = now + this.TimeOut
	claims["iat"] = now
	for k, v := range payloads {
		claims[k] = v
	}

	token := jwt.New(jwt.SigningMethodHS256)
	token.Claims = claims
	return token.SignedString([]byte(this.SecretKey))
}