初始化项目：添加后端代码、ThinkPHP框架、前端资源

2026-09-03 12:42:39 +08:00
commit 482bece22e
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+<?php
+
+namespace app\common\service\app\physical;
+
+use app\admin\model\app\physical\SkuPrice as SkuPriceModel;
+use app\admin\model\app\physical\Goods as GoodsModel;
+use think\Db;
+
+/**
+ * 库存服务类
+ */
+class StockSale
+{
+    /**
+     * 下单锁定库存
+     *
+     * @param array $buyInfo
+     * @return void
+     */
+    public function stockLock($buyInfo)
+    {
+        $goods = $buyInfo['goods'];
+        $goods_sku_price_id = $buyInfo['goods_sku_price_id'];
+        $buy_num = $buyInfo['goods_num'] ?? 1;
+
+        $buyInfo['goods_num'] = intval($buy_num) < 1 ? 1 : intval($buy_num);
+
+        $skuPrice = SkuPriceModel::where('id', $goods_sku_price_id)
+            ->where('uniacid', UNIACID)
+            ->where('status', 1)
+            ->lock(true)
+            ->value('stock');
+
+        if ($skuPrice < $buyInfo['goods_num']) {
+            throw new \Exception('商品 ' . $goods['title'] . ' 库存不足');
+        }
+    }
+
+    /**
+     * 下单成功扣减库存
+     *
+     * @param array $orderItems
+     * @return void
+     */
+    public function forwardStockSale($orderItems)
+    {
+        foreach ($orderItems as $item) {
+            $snapshoot = $item['snapshoot'] ?? [];
+            $goods_num = $item['count'] ?? 1;
+
+            $goodsId = $snapshoot['id'] ?? 0;
+            $specType = $snapshoot['spec_type'] ?? 'single';
+
+            $skuPriceQuery = SkuPriceModel::where('goods_id', $goodsId)
+                ->where('uniacid', UNIACID);
+
+            if ($specType == 'single') {
+                $skuPrice = $skuPriceQuery->order('id', 'asc')->find();
+            } else {
+                $skuPrice = $skuPriceQuery->where('goods_sku_text', $snapshoot['sku_text'] ?? '')->find();
+            }
+
+            if ($skuPrice) {
+                // 减少规格库存
+                SkuPriceModel::where('id', $skuPrice['id'])
+                    ->where('uniacid', UNIACID)
+                    ->setDec('stock', $goods_num);
+
+                // 增加规格销量
+                SkuPriceModel::where('id', $skuPrice['id'])
+                    ->where('uniacid', UNIACID)
+                    ->setInc('sales', $goods_num);
+
+                // 增加商品总销量
+                GoodsModel::where('id', $goodsId)
+                    ->where('uniacid', UNIACID)
+                    ->setInc('total_sales', $goods_num);
+
+                // 同步更新商品库存
+                $this->updateGoodsStock($goodsId, $specType);
+            }
+        }
+    }
+
+    /**
+     * 订单退款返还库存
+     *
+     * @param array $orderItems
+     * @return void
+     */
+    public function backStockSale($orderItems)
+    {
+        foreach ($orderItems as $item) {
+            $snapshoot = $item['snapshoot'] ?? [];
+            $goods_num = $item['count'] ?? 1;
+
+            $goodsId = $snapshoot['id'] ?? 0;
+            $specType = $snapshoot['spec_type'] ?? 'single';
+
+            $skuPriceQuery = SkuPriceModel::where('goods_id', $goodsId)
+                ->where('uniacid', UNIACID);
+
+            if ($specType == 'single') {
+                $skuPrice = $skuPriceQuery->order('id', 'asc')->find();
+            } else {
+                $skuPrice = $skuPriceQuery->where('goods_sku_text', $snapshoot['sku_text'] ?? '')->find();
+            }
+
+            if ($skuPrice) {
+                // 返还规格库存
+                SkuPriceModel::where('id', $skuPrice['id'])
+                    ->where('uniacid', UNIACID)
+                    ->setInc('stock', $goods_num);
+
+                // 减少规格销量
+                SkuPriceModel::where('id', $skuPrice['id'])
+                    ->where('uniacid', UNIACID)
+                    ->setDec('sales', $goods_num);
+
+                // 减少商品总销量
+                GoodsModel::where('id', $goodsId)
+                    ->where('uniacid', UNIACID)
+                    ->setDec('total_sales', $goods_num);
+
+                // 同步更新商品库存
+                $this->updateGoodsStock($goodsId, $specType);
+            }
+        }
+    }
+
+    /**
+     * 更新商品库存
+     * 单规格：取单一库存（status=1）
+     * 多规格：取所有规格库存之和（status=1）
+     * @param int $goodsId 商品ID
+     * @param string $specType 规格类型：single=单规格，multi=多规格
+     */
+    protected function updateGoodsStock($goodsId, $specType = 'single')
+    {
+        $stock = 0;
+
+        if ($specType == 'single') {
+            $skuPrice = SkuPriceModel::where('goods_id', $goodsId)
+                ->where('uniacid', UNIACID)
+                ->where('status', 1)
+                ->order('id', 'asc')
+                ->find();
+            
+            if ($skuPrice) {
+                $stock = $skuPrice['stock'] ?? 0;
+            }
+        } else {
+            $totalStock = SkuPriceModel::where('goods_id', $goodsId)
+                ->where('uniacid', UNIACID)
+                ->where('status', 1)
+                ->sum('stock');
+            
+            $stock = $totalStock ?? 0;
+        }
+
+        GoodsModel::where('id', $goodsId)->update([
+            'stock' => $stock
+        ]);
+    }
+}