feat : check stock

app/Service/Api/Order/CheckStockService.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * This service file is part of item.
+ *
+ * @author   ctexthuang
+ * @contact  ctexthuang@qq.com
+ */
+
+declare(strict_types=1);
+
+namespace App\Service\Api\Order;
+
+use App\Cache\Redis\Api\ApiRedisKey;
+use App\Constants\ApiCode;
+use App\Exception\ErrException;
+use Psr\Container\ContainerExceptionInterface;
+use Psr\Container\NotFoundExceptionInterface;
+
+class CheckStockService extends BaseOrderService
+{
+    /**
+     * @return array
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
+     */
+    public function handle(): array
+    {
+        $this->siteId = (int)$this->request->input('site_id');
+        $skuId = (int)$this->request->input('sku_id');
+
+        $kitchenId = $this->checkSite($this->siteId);
+
+        $this->stockKey = ApiRedisKey::goodStockKey($this->cycleId,$kitchenId);
+
+        if (!$this->redis->exists($this->stockKey)) throw new ErrException('库存不足');
+
+        if (($this->redis->zScore($this->stockKey,$skuId) ?? 0) < 1) throw new ErrException('商品库存不足',ApiCode::ORDER_GOOD_INSUFFICIENT_STOCK);
+
+        return $this->return->success();
+    }
+}