lanzu_api_2021-12-26/app/Service/v3/Implementations/GoodsActivityService.php

<?php

namespace App\Service\v3\Implementations;

use App\Constants\v3\ActivityType;
use App\Constants\v3\ErrorCode;
use App\Constants\v3\SsdbKeys;
use App\Exception\ErrorCodeException;
use App\Service\v3\Interfaces\GoodsActivityServiceInterface;
use App\TaskWorker\SSDBTask;
use App\Constants\v3\Store;
use App\Constants\v3\Goods;
use App\Model\v3\GoodsActivity;
use App\Model\v3\GoodsActivityBanner;
use Hyperf\Redis\Redis;
use Hyperf\Utils\ApplicationContext;

class GoodsActivityService implements GoodsActivityServiceInterface
{
    public function do($goodsId)
    {

    }

    public function check(GoodsActivity $goods, $num, $userId)
    {

        $redis = ApplicationContext::getContainer()->get(Redis::class);
        $inventoryKey = 'goods_inventory_sold_2_'.$goods->id; // 拼接activity_type和goods_id

        if (empty($goods)) {
            return ErrorCode::GOODS_ACTIVITY_NOT_EXISTS;
        }

        // 活动是否已经结束
        if ($goods->expire_time < time()) {
            return ErrorCode::GOODS_ACTIVITY_EXPIRED;
        }

        // 商户歇业
        if($goods->store->is_rest == 1){
            return ErrorCode::STORE_REST;
        }

        // 商品下架或已删除
        if($goods->on_sale == 0 || !is_null($goods->deleted_at)){
            return ErrorCode::GOODS_ACTIVITY_ON_SALE_NO;
        }

        // 商品库存不足
        // 获取冻结的库存
        //$inventoryFrozen = (int)$redis->get($inventoryKey);
        $inventoryFrozen = 0;
        if($goods->is_infinite != 1 && $goods->inventory < ($num+$inventoryFrozen)){
            return ErrorCode::GOODS_ACTIVITY_INVENTORY_ERROR;
        }

        // 压redis库存
        // redis记录当前商品的购买数量，压库存，下单失败、下单成功扣库存成功、订单取消的时候释放
        if (!$redis->exists($inventoryKey)) {
            $redis->set($inventoryKey, $num);
        } else {
            $redis->incrBy($inventoryKey, intval($num));
        }

        // 是否超过限购数量
        if ($goods->restrict_num != 0 && $goods->restrict_num < $num) {
            return ErrorCode::GOODS_ACTIVITY_RESTRICT_LIMIT;
        }

        // 是否已经购买过（某个时间段内，时间段有商品的限制）
        $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);
        $hasBuy = $ssdb->exec('get', SsdbKeys::ACTIVITY_GOODS_BUY_RECORD.$userId.'_'.$goods->type.'_'.$goods->id);
        if ($hasBuy && $hasBuy >= $goods->time_limit_num) {
            return ErrorCode::GOODS_ACTIVITY_BUY;
        }

        return true;
    }

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

    public function getBanner($goodsId)
    {
        $banner = GoodsActivityBanner::query()->where('goods_id',$goodsId)->orderByDesc('type')->get();
        return $banner;
    }

    public function detail($goodsId)
    {
        $res = GoodsActivity::query()->with('store')->where('id',$goodsId)->first();
        return $res;
    }

    public function cacheRecord($goodsId, $num, $userId)
    {

        $goods = GoodsActivity::query()
            ->where('id', $goodsId)
            ->first();

        $ssdbKey = SsdbKeys::ACTIVITY_GOODS_BUY_RECORD.$userId.'_'.$goods->type.'_'.$goodsId;

        $expireTime = 0;
        if ($goods->time_limit_days >= 1) {
            $expireTime += strtotime(date('Y-m-d 23:59:59')) - time();
        }
        $expireTime += ($goods->time_limit_days-1) * 86400;

        $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);

        if (!$ssdb->exec('exists', $ssdbKey)) {
            $ssdb->exec('set', $ssdbKey, $num);
            $ssdb->exec('expire', $ssdbKey, $expireTime);
        } else {
            $ssdb->exec('incr', $ssdbKey, $num);
        }

    }

    public function clearCacheRecord($goodsId, $num, $userId)
    {
        $goods = GoodsActivity::query()
            ->where('id', $goodsId)
            ->first();
        if (empty($goods)) {
            return true;
        }
        $ssdbKey = SsdbKeys::ACTIVITY_GOODS_BUY_RECORD.$userId.'_'.$goods->type.'_'.$goodsId;

        $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);

        if (!$ssdb->exec('exists', $ssdbKey)) {
        } else {
            $res = $ssdb->exec('incr', $ssdbKey, -1*$num);
        }
    }

    /**
     * 统计订单中活动商品的数量，并校验
     * @param $orderGoods
     * @param int $limitNum
     * @return bool
     */
    public function checkOrderActivityCount($orderGoods, $limitNum=1)
    {

        $sourceGoods = GoodsActivity::query()
            ->whereIn('id', array_values(array_column($orderGoods, 'goods_id')))
            ->get()->toArray();

        $limitNums = [
            ActivityType::FLASH_SALE => 1,
            ActivityType::GROUP_BUY => 1,
            ActivityType::NEW_PRODUCT => 1,
        ];

        $buyNum = 0;
        foreach ($sourceGoods as $key => &$goods) {
            if ($buyNum >= $limitNums[$goods['type']]) {
                return false;
            }
            $buyNum++;
        }

        return true;
    }
}