package utils

import (
	"bytes"
	"time"
	"videoweb/pub/common/enum/redisconst"
	sErr "videoweb/pub/common/errors"
	"videoweb/pub/redis"
)

const (
	expireTime = 30 * 24 * time.Hour
)

type TokenRedis struct {
}

func NewTokenRedis() *TokenRedis {
	return &TokenRedis{}
}

func (tr *TokenRedis) Save(userId int64, token string) (err error) {
	if err = tr.Delete(userId); err != nil {
		return
	}
	err = redis.Set(redisconst.AppUserTokenKey(userId), token, expireTime)
	if err != nil {
		err = sErr.MakeWithErr(sErr.RedisSet, err)
	}
	return
}

func (tr *TokenRedis) Exists(userId int64, token string) (has bool, err error) {
	tokenbytes, err := tr.Get(userId)
	if err != nil {
		return
	}
	has = bytes.Compare(tokenbytes, []byte(token)) == 0
	return
}

func (tr *TokenRedis) Get(userId int64) (token []byte, err error) {
	token, err = redis.GetBytes(redisconst.AppUserTokenKey(userId))
	if err != nil {
		err = sErr.MakeWithErr(sErr.RedisGet, err)
	}
	return
}

func (tr *TokenRedis) Delete(userId int64) (err error) {
	err = redis.Del(redisconst.AppUserTokenKey(userId))
	if err != nil {
		err = sErr.MakeWithErr(sErr.RedisDel, err)
	}
	return
}