qianniaoApis/Cache/ActivityLimitCache.Class.php

<?php
/**
 * 秒杀活动限购
 * Created by PhpStorm.
 * User: XiaoMing
 * Date: 2020/4/27
 * Time: 10:30
 */

namespace JinDouYun\Cache;

use Mall\Framework\Cache\Redis;
use Mall\Framework\Factory;

class ActivityLimitCache
{
    /**
     * @var Redis
     */
    private $cache;

    private $enterpriseId;

    private static $goodsLimitKey = 'list';

    private static $userLimitTable = 'table';

    private static $activityDetails = 'details';

    /**
     * ActivityLimitCache constructor.
     * @param $enterpriseId
     * @throws \Exception
     */
    public function __construct($enterpriseId)
    {
        $this->enterpriseId = $enterpriseId;
        $this->cache = Factory::cache('activity');
    }


    /**************************************秒杀商品总数量 start********************************************************/

    /**
     * @param $activityId
     * @param $goodsId
     * @return string
     */
    public function createListKey($activityId, $goodsId,$skuId)
    {
        return $this->enterpriseId . '_' . $activityId . '_' . $goodsId . '_' .$skuId.'_'. self::$goodsLimitKey;
    }

    /**
     * 插入链表d
     * @param $activityId
     * @param $goodsId
     * @param array $value
     * @return mixed
     */
    public function lPush($activityId, $goodsId, $skuId,array $value)
    {
        $key = self::createListKey($activityId, $goodsId,$skuId);
        $dbResult = false;
        foreach ($value as $val) {
            $dbResult = $this->cache->push($key, $val, 'start');
        }
        return $dbResult;
    }

    /**
     * 减商品限购数量
     * @param $activityId
     * @param $goodsId
     * @param int $number
     * @return array
     */
    public function rPop($activityId, $goodsId, $skuId,$number = 1)
    {
        $key = self::createListKey($activityId, $goodsId,$skuId);
        $result = [];
        for ($i = 0; $i < $number; $i++) {
            if ($value = $this->cache->pop($key, 'end')) {
                $result[] = $value;
            }
        }
        return $result;
    }

    /**
     * 秒杀活动商品剩余数量
     * @param $activityId
     * @param $goodsId
     * @param $skuId
     * @return mixed
     */
    public function getLen($activityId, $goodsId,$skuId)
    {
        $key = self::createListKey($activityId, $goodsId,$skuId);
        return $this->cache->llen($key);
    }

    /**
     * 删除key
     * @param $activityId
     * @param $goodsId
     * @return mixed
     */
    public function delKey($activityId, $goodsId,$skuId)
    {
        $key = self::createListKey($activityId, $goodsId,$skuId);
        return $this->cache->del($key);
    }

    /**************************************秒杀商品总数量 end********************************************************/


    /**************************************用户活动商品限购数量 start******************************************************/
    /**
     * 用户限购表
     * @param $activityId
     * @return string
     */
    public function createTableKey($activityId)
    {
        return $this->enterpriseId . '_' . $activityId . '_' . self::$userLimitTable;
    }

    /**
     * 活动商品购买记录
     * @param $activityId
     * @param $goodsId
     * @param $skuId
     * @param $userCenterId
     * @param int $number
     * @return mixed
     */
    public function writeLimit($activityId, $goodsId, $skuId, $userCenterId, $number = 1)
    {
        $table = self::createTableKey($activityId);
        return $this->cache->hset($table, $goodsId . '_' . $skuId . '_' . $userCenterId, $number);
    }

    /**
     * 缓存活动数据
     * @param $activityId
     * @param $goodsId
     * @param $value
     * @return mixed
     */
    public function writeActivity($activityId, $value)
    {
        $table = self::createTableKey($activityId);
        return $this->cache->hset($table, self::$activityDetails, json_encode($value));
    }

    /**
     * 获取活动详情
     * @param $activityId
     * @return mixed
     */
    public function getActivity($activityId)
    {
        $table = self::createTableKey($activityId);
        $result = $this->cache->hget($table, self::$activityDetails);
        if (!empty($result)) {
            $result = json_decode($result, true);
        }
        return $result;
    }

    /**
     * 获取用户已购购数量
     * @param $activityId
     * @param $goodsId
     * @param $skuId
     * @param $userCenterId
     * @return mixed
     */
    public function getLimit($activityId, $goodsId, $skuId,$userCenterId)
    {
        $table = self::createTableKey($activityId);
        return $this->cache->hget($table, $goodsId . '_' . $skuId . '_' . $userCenterId);
    }
}