package service

import (
	"SciencesServer/app/logic"
	"SciencesServer/config"
	cache2 "SciencesServer/serve/cache"
	"SciencesServer/utils"
	"encoding/json"
	"errors"
	"fmt"
	"time"
)

type AuthToken struct {
	Token string `json:"token"`
}

func (this *AuthToken) Auth(session logic.ISession) error {
	tokenInfo := utils.JWTDecrypt(this.Token)

	if tokenInfo == nil || len(tokenInfo) <= 0 {
		return errors.New("登陆错误，Token无效")
	}
	expTimestamp := utils.StringToInt64(fmt.Sprintf("%v", tokenInfo["exp"]))
	expTime := time.Unix(expTimestamp, 0)
	ok := expTime.After(time.Now())

	if !ok {
		return errors.New("登陆错误，Token过期")
	}
	cache, _ := cache2.Cache.HGet(config.RedisKeyForAccount, fmt.Sprintf("%v", tokenInfo[config.TokenForUID]))

	if cache == "" {
		return errors.New("登陆错误，用户未登录或已退出")
	}

	if err := json.Unmarshal([]byte(cache), session); err != nil {
		return err
	}
	if !config.SettingInfo.MultipleLogin && session.GetToken() != this.Token {
		return errors.New("登陆错误，已在其他地方登录！")
	}
	return nil
}

func NewAuthToken(token string) *AuthToken {
	return &AuthToken{
		Token: token,
	}
}