fix(api): 修复价格更新和库存扣减问题

- 更新产品价格信息，包括供货价、成本价、会员价和零售价
- 添加活动价更新逻辑，针对特定客户群体
- 实现库存扣减功能，根据购物车数量更新门店库存
- 优化代码格式和结构，提高可读性

app/api/logic/DemoLogic.php

@@ -3,6 +3,7 @@
 namespace app\api\logic;
 
 use app\common\logic\BaseLogic;
+use app\common\model\store_branch_product\StoreBranchProduct;
 use app\common\model\store_product\StoreProduct;
 use app\common\model\store_product_group_price\StoreProductGroupPrice;
 use think\facade\Db;
@@ -67,6 +68,23 @@ class DemoLogic extends BaseLogic
             } else {
                 StoreProductGroupPrice::insert(['product_id' => $v['product_id'], 'group_id' => 20, 'price' => bcadd($v['price4'], 0, 2), 'price_type' => 3, 'base_rate' => bcadd(bcmul($v['lv4'], 100), 100, 2)]);
             }
+            //活动价
+            $find42 = StoreProductGroupPrice::where('product_id', $v['product_id'])->where('group_id', 42)->find();
+            if ($find42) {
+                $find42->save(['price' => bcadd($v['price4'], 0, 2)]);
+            } else {
+                StoreProductGroupPrice::insert(['product_id' => $v['product_id'], 'group_id' => 42, 'price' => bcadd($v['price9'], 0, 2), 'price_type' => 3, 'base_rate' =>0]);
+            }
+        }
+    }
+
+    public static function test2($store_id, $srr)
+    {
+        foreach ($srr as $k => $v) {
+            $find = StoreBranchProduct::where('store_id', $store_id)->where('product_id', $v['product_id'])->find();
+            $find->stock = bcsub($find->stock, $v['cart_num'], 2);
+            $find->save();
+            SqlChannelLog('StoreBranchProduct', $find['id'], $v['cart_num'], -1, Request()->url(), 1);
         }
     }
 }