<?php

namespace App\Utils\Encrypt\Token\Driver;

use App\Master\Enum\RedisKeyEnum;
use App\Utils\Encrypt\Token\Driver;
use App\Utils\RedisUtil;
use Hyperf\DbConnection\Db;
use function Hyperf\Config\config;

/**
 * Token操作类
 */
class Mysql extends Driver
{

    /**
     * 默认配置
     * @var array
     */
    protected array $options = [
        'table'  => 'user_token',
        'expire' => 2592000
    ];


    /**
     * 构造函数
     * @param array $options 参数
     * @access public
     * @throws \Exception
     */
    public function __construct(array $options = [])
    {
        if (!empty($options)) {
            $this->options = array_merge($this->options, $options);
        }
        $time          = time();
        $token_time    = RedisUtil::getInstance(RedisKeyEnum::TOKEN_TIME)->get();
        if (!$token_time || $token_time < $time - 86400) {
            RedisUtil::getInstance(RedisKeyEnum::TOKEN_TIME)->setex($time, $this->options['expire']);
            Db::table($this->options['table'])->whereBetween('expiretime', [0, $time])->delete();
        }
    }

    /**
     * 存储Token
     * @param string $token Token
     * @param int $user_id 会员ID
     * @param int|null $expire 过期时长,0表示无限,单位秒
     * @return bool
     */
    public function set(string $token, int $user_id, int $expire = null): bool
    {
        $expire_time = !is_null($expire) && $expire !== 0 ? time() + $expire : 0;
        $token       = $this->getEncryptedToken($token);
        Db::table($this->options['table'])->where('user_id', $user_id)->delete();
        Db::table($this->options['table'])->insert(['token' => $token, 'user_id' => $user_id, 'createtime' => time(), 'expiretime' => $expire_time]);
        return true;
    }

    /**
     * 获取Token内的信息
     * @param string $token
     * @return  array
     */
    public function get(string $token): array
    {
        //方便测试
        if (strpos($token, 'testuid_') !== false && config('app_debug',false)) {
            $uid = substr($token, 8);
            return [
                'user_id' => intval($uid),
            ];
        }
        //方便测试

        $data = Db::table($this->options['table'])->where('token', $this->getEncryptedToken($token))->first();
        if ($data) {
            $data = json_decode(json_encode($data),true);
            if (!$data['expiretime'] || $data['expiretime'] > time()) {
                //返回未加密的token给客户端使用
                $data['token'] = $token;
                //返回剩余有效时间
                $data['expires_in'] = $this->getExpiredIn((int)$data['expiretime']);
                return $data;
            } else {
                $this->delete($token);
            }
        }
        return [];
    }

    /**
     * 判断Token是否可用
     * @param string $token Token
     * @param int $user_id 会员ID
     * @return  boolean
     */
    public function check(string $token, int $user_id): bool
    {
        $data = $this->get($token);
        return $data && $data['user_id'] == $user_id;
    }

    /**
     * 删除Token
     * @param string $token
     * @return  boolean
     */
    public function delete(string $token): bool
    {
        Db::table($this->options['table'])->where('token', $this->getEncryptedToken($token))->delete();
        return true;
    }

    /**
     * 删除指定用户的所有Token
     * @param int $user_id
     * @return  boolean
     */
    public function clear(int $user_id): bool
    {
        Db::table($this->options['table'])->where('user_id', $user_id)->delete();
        return true;
    }

}