<?php
declare (strict_types=1);

namespace app\service\util;

use app\config\BusinessCacheKey;
use app\exception\BusinessException;
use think\helper\Str;

/**
 * @author canny
 * @date 2023/11/20 15:03
 **/
class SmsUtil
{
    public static function requestLimit($key, $expire, $limitSecond = 60)
    {
        $ttl = RedisService::getRedisInstance()->ttl($key);
        if (!empty($ttl) && $expire - $ttl < $limitSecond) {
            throw new BusinessException("请求过于频繁");
        }
    }

    public static function getSmsCode(string $key, int $ttl): string
    {
        $redis = RedisService::getRedisInstance();
        $redis->del($key);
        $code = Str::random(6, 1);
        $redis->set($key, $code, 'ex', $ttl);
        return $code;
    }

    public static function compareSmsCode(string $codeCacheKey, $code)
    {
        $redis = RedisService::getRedisInstance();
        $cacheCode = $redis->get($codeCacheKey);
        if (empty($cacheCode) || $code != $cacheCode) {
            throw new BusinessException("验证码错误");
        }
        $redis->del($codeCacheKey);
    }
    public static function getSmsKey($mobile): string
    {
        return BusinessCacheKey::SITE_SMS_CODE['key'] . ":" . $mobile;
    }
}