From 3b788e2dbb1a76bb83ce98a717059addcfbaf412 Mon Sep 17 00:00:00 2001
From: Lemon <15040771@qq.com>
Date: Mon, 24 Aug 2020 11:03:52 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=E8=B4=AD=E7=89=A9=E8=BD=A6?=
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---
 app/Controller/PurchaseLimitController.php |  4 +-
 app/Service/PurchaseLimitService.php       | 90 ++++++++++++++++++----
 2 files changed, 76 insertions(+), 18 deletions(-)

diff --git a/app/Controller/PurchaseLimitController.php b/app/Controller/PurchaseLimitController.php
index 69b2c48..581e871 100644
--- a/app/Controller/PurchaseLimitController.php
+++ b/app/Controller/PurchaseLimitController.php
@@ -29,8 +29,8 @@ class PurchaseLimitController extends BaseController
     public function updateShopCar()
     {
         $res = $this->purchaseLimitService->updateShopCar($this->request->all());
-        if (!$res) {
-            return $this->result(ErrorCode::GOODS_FAILURE, '', '更新购物车失败');
+        if (isset($res['error'])) {
+            return $this->result(ErrorCode::GOODS_FAILURE, '', $res['error']);
         }
         return $this->success($res);
     }
diff --git a/app/Service/PurchaseLimitService.php b/app/Service/PurchaseLimitService.php
index 29004fc..a0cc64b 100644
--- a/app/Service/PurchaseLimitService.php
+++ b/app/Service/PurchaseLimitService.php
@@ -26,14 +26,19 @@ class PurchaseLimitService implements PurchaseLimitServiceInterface
             ])
             ->sum('num');
         //限购检验
-        if($goods->restrict_num > 0 && $goods->restrict_num <= $num){
-            return false;
+        if($goods->restrict_num > 0 && $goods->restrict_num <= $num)
+        {
+            $error = [
+                'error' => '超过商品限购数量'
+            ];
+            return $error;
         }
         //获取规格表商品信息
-        if($params['combination_id'] > 0) {
+        if($params['combination_id'] > 0)
+        {
             $combination = Combination::where([
-                ['id', '=', $params['combination_id']],
-            ])
+                    ['id', '=', $params['combination_id']],
+                ])
                 ->select('wm_money', 'number')
                 ->first();
             $inventory = $combination->number;
@@ -42,23 +47,26 @@ class PurchaseLimitService implements PurchaseLimitServiceInterface
             $inventory = $goods->inventory;
             $money = $goods->money;
         }
-        //库存校验
+        //库存校验 is_max 无限库存
         if($goods->is_max == 2 && ($num + $params['num']) > $inventory)
         {
-            return false;
+            $error = [
+                'error' => '库存不足'
+            ];
+            return $error;
         }
         //更新购物车
-        $exists = ShopCar::where([
+        $exists_sql = ShopCar::where([
                 ['user_id', '=', $params['user_id']],
                 ['good_id', '=', $params['good_id']],
                 ['market_id','=',$params['market_id']],
                 ['combination_id','=', $params['combination_id']],
             ]);
             if($params['combination_id'] > 0) {
-                $exists->where('combination_id',$params['combination_id']);
+                $exists_sql->where('combination_id',$params['combination_id']);
             }
-        $test = $exists->exists();
-        if($test)
+        $exists = $exists_sql->exists();
+        if($exists)
         {
             $update = ShopCar::where([
                     ['user_id', '=', $params['user_id']],
@@ -93,7 +101,7 @@ class PurchaseLimitService implements PurchaseLimitServiceInterface
                 ]
             );
         }
-        return $test;
+        return true;
         // if($params['goods_id'] == 1561){
         //     return false;
         // }else{
@@ -103,11 +111,61 @@ class PurchaseLimitService implements PurchaseLimitServiceInterface
 
     public function updateShopCar($params)
     {
-        if($params['good_id'] == 1561){
-            return false;
-        }else{
-            return '更新购物车成功';
+        if($params['num'] <= 0)
+        {
+            ShopCar::where('id',$params['id'])->delete();
+        }else {
+            $shop_car = ShopCar::where('id',$params['id'])
+                ->select('good_id','user_id')
+                ->first();
+            //获取主表商品表信息
+            $goods = Goods::where([
+                    ['id','=',$shop_car['good_id']],
+                ])
+                ->select('is_max','restrict_num','box_money','inventory','money')
+                ->first();
+            //获取购物车该商品购买数量
+            $num = ShopCar::where([
+                    ['user_id', $shop_car['user_id']],
+                    ['good_id', $shop_car['good_id']],
+                ])
+                ->sum('num');
+            //限购检验
+            if($goods->restrict_num > 0 && $goods->restrict_num <= $num)
+            {
+                $error = [
+                    'error' => '超过商品限购数量'
+                ];
+                return $error;
+            }
+            if ($shop_car['combination_id'] > 0)
+            {
+                $combination = Combination::where([
+                    ['id', '=', $shop_car['combination_id']],
+                ])
+                    ->select('wm_money', 'number')
+                    ->first();
+                $inventory = $combination->number;
+            }else{
+                $inventory = $goods->inventory;
+            }
+            //库存校验 is_max 无限库存
+            if($goods->is_max == 2 && $params['num'] > $inventory)
+            {
+                $error = [
+                    'error' => '库存不足'
+                ];
+                return $error;
+            }
+            ShopCar::where('id',$params['id'])
+                ->update(['num' => $params['num']]);
+            return true;
         }
+        // if($params['good_id'] == 1561){
+        //     return false;
+        // }else{
+        //     return '更新购物车成功';
+        // }
     }
 
     public function test($params)