// Copyright (c) 2025 Tethys Plex
//
// This file is part of Veloera.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package model

import (
	"fmt"
	"time"
	"veloera/common"
	"veloera/constant"
)

func cacheSetToken(token Token) error {
	key := common.GenerateHMAC(token.Key)
	token.Clean()
	err := common.RedisHSetObj(fmt.Sprintf("token:%s", key), &token, time.Duration(constant.TokenCacheSeconds)*time.Second)
	if err != nil {
		return err
	}
	return nil
}

func cacheDeleteToken(key string) error {
	key = common.GenerateHMAC(key)
	err := common.RedisHDelObj(fmt.Sprintf("token:%s", key))
	if err != nil {
		return err
	}
	return nil
}

func cacheIncrTokenQuota(key string, increment int64) error {
	key = common.GenerateHMAC(key)
	err := common.RedisHIncrBy(fmt.Sprintf("token:%s", key), constant.TokenFiledRemainQuota, increment)
	if err != nil {
		return err
	}
	return nil
}

func cacheDecrTokenQuota(key string, decrement int64) error {
	return cacheIncrTokenQuota(key, -decrement)
}

func cacheSetTokenField(key string, field string, value string) error {
	key = common.GenerateHMAC(key)
	err := common.RedisHSetField(fmt.Sprintf("token:%s", key), field, value)
	if err != nil {
		return err
	}
	return nil
}

// CacheGetTokenByKey 从缓存中获取 token，如果缓存中不存在，则从数据库中获取
func cacheGetTokenByKey(key string) (*Token, error) {
	hmacKey := common.GenerateHMAC(key)
	if !common.RedisEnabled {
		return nil, fmt.Errorf("redis is not enabled")
	}
	var token Token
	err := common.RedisHGetObj(fmt.Sprintf("token:%s", hmacKey), &token)
	if err != nil {
		return nil, err
	}
	token.Key = key
	return &token, nil
}