<?php

namespace App\Service\v3\Implementations;

use App\Service\v3\Interfaces\CouponServiceInterface;
use Hyperf\Redis\Redis;
use Hyperf\Utils\ApplicationContext;

class CouponService implements CouponServiceInterface
{

    /**
     * @inheritDoc
     */
    public function do()
    {
        // TODO: Implement do() method.
    }

    /**
     * @inheritDoc
     */
    public function check()
    {
        // TODO: Implement check() method.
    }

    /**
     * @inheritDoc
     */
    public function undo()
    {
        // TODO: Implement undo() method.
    }

    /**
     * @inheritDoc
     */
    public function countAvailableByUser($userId)
    {
        return mt_rand(0,10);
    }

    /**
     * 缓存优惠券今日使用情况
     * @param $userId
     * @param $couponId
     * @param $couponRecId
     * @return bool
     */
    function cacheTodayCouponUsed($userId, $couponId, $couponRecId)
    {
        $redis = ApplicationContext::getContainer()->get(Redis::class);
        $setRes = $redis->sAdd('coupon_' . date('Ymd') . '_used_' . $userId, $couponId);
        $expireRes = $redis->expire('coupon_' . date('Ymd') . '_used_' . $userId, strtotime(date('Y-m-d') . ' 23:59:59') - time());
        return $setRes && $expireRes;
    }
}