package service

import (
	"ArmedPolice/config"
	cache2 "ArmedPolice/serve/cache"
	"ArmedPolice/utils"
	"errors"
	"fmt"
	"time"
)

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

func (this *AuthToken) Auth() (*Session, error) {
	tokenInfo := utils.JWTDecrypt(this.Token)

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

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

	if cache == "" {
		return nil, errors.New("用户未登录或已退出")
	}
	session := new(Session)
	_ = session.UnmarshalBinary([]byte(cache))

	if !config.SettingInfo.MultipleLogin && session.Token != this.Token {
		return nil, errors.New("登录失效，已在其他地方登录！")
	}
	return session, nil
}

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