<?php

namespace app\util;

use fast\FuncException;
use think\facade\Cache;

class AuthCodeUtil
{
    //redis连接
    private $cache;
    //验证码的保存秒数,600秒，即:10分钟
    private $ttl = 600;

    //构造
    public function __construct($cache)
    {
        $this->cache = $cache;
    }

    //生成code保存到redis,并返回code
    public function setCode($mobile)
    {
        $key  = "Auth:" . $mobile;
        $code = $this->newAuthCode();
        $this->cache->set($key, $code, $this->ttl);
        return $code;
    }

    /**
     * 校对验证码
     * @param $mobile
     * @param $code
     * @return bool
     */
    public function verifyCode($mobile, $code): bool
    {
        $key       = "Auth:" . $mobile;
        $cacheCode = $this->cache->get($key);
        if ($cacheCode == $code) {
            return true;
        } else {
            return false;
        }
    }

    /**
     *
     * @return int
     */
    public function newAuthCode(): int
    {
        return rand(100000, 999999);
    }

    /**
     * @param $mobile
     * @return bool
     * @throws FuncException
     */
    public function setRate($mobile): bool
    {
        $key       = "Auth:" . $mobile;
        $cacheCode = $this->cache->get($key);

        if ($cacheCode) {
            $ttl = Cache::store('redis')->ttl($key);
            if (($this->ttl - $ttl) < 60) {
                throw new FuncException('请超过60秒之后再发送短信');
            }
        }

        return true;
    }
}