调整砍价

app/Endpoint/Api/Http/Controllers/Order/OrderVerifyController.php

@@ -20,6 +20,7 @@ class OrderVerifyController extends Controller
         $rules = [
             'coupon_id' => ['bail', 'nullable', 'int'],
             'shipping_address_id' => ['bail', 'nullable', 'int'],
+            'baragain_order_id' => ['bail', 'nullable', 'int'],
         ];
 
         // 快速下单
@@ -40,6 +41,7 @@ class OrderVerifyController extends Controller
             'product.quantity' => '数量',
             'coupon_id' => '优惠券',
             'shipping_address_id' => '收货地址',
+            'bargain_order_id'=> '砍价',
         ]);
 
         $user = $request->user();
@@ -52,6 +54,7 @@ class OrderVerifyController extends Controller
                     $request->input('product.quantity'),
                     $request->input('shipping_address_id'),
                     $request->input('coupon_id'),
+                    $request->input('bargain_order_id'),
                 ) : $orderService->verifyShoppingCartOrder(
                     $user,
                     $request->input('shopping_cart'),

app/Models/User.php

@@ -2,7 +2,6 @@
 
 namespace App\Models;
 
-use App\Exceptions\BizException;
 use Dcat\Admin\Traits\HasDateTimeFormatter;
 use Illuminate\Auth\Authenticatable;
 use Illuminate\Contracts\Auth\Access\Authorizable as AuthorizableContract;
@@ -410,6 +409,14 @@ class User extends Model implements AuthorizableContract, AuthenticatableContrac
         return $this->belongsToMany(User::class, 'user_infos', 'inviter_id', 'user_id');
     }
 
+    /**
+     * 用户的砍价单
+     */
+    public function bargainOrders()
+    {
+        return $this->hasMany(BargainOrder::class);
+    }
+
     /**
      * 获取我的粉丝总数
      *

app/Services/OrderService.php

@@ -253,8 +253,8 @@ class OrderService
             $sku = $product['sku'];
             $qty = $product['quantity'];
 
-            // 支付金额 = 商品总额 - 优惠券折扣金额- 会员折扣金额
+            // 支付金额 = 商品总额 - 优惠券折扣金额- 会员折扣金额 - 砍价金额
-            $totalAmount = $product['total_amount'] - $product['coupon_discount_amount'] - $product['vip_discount_amount'];
+            $totalAmount = $product['total_amount'] - $product['coupon_discount_amount'] - $product['vip_discount_amount'] - $product['bargain_amount'];
 
             $orderProducts[] = [
                 'gift_for_sku_id' => null,
@@ -277,6 +277,7 @@ class OrderService
                 'coupon_discount_amount' => $product['coupon_discount_amount'],
                 'vip_discount_amount' => $product['vip_discount_amount'],
                 'total_amount' => $totalAmount,
+                'bargain_amount'=> $product['bargain_amount'],
                 'created_at' => $order->created_at,
                 'updated_at' => $order->updated_at,
             ];
@@ -466,6 +467,7 @@ class OrderService
                         'coupon_discount_amount' => 0,
                         'vip_discount_amount' => 0,
                         'total_amount' => 0,
+                        'bargain_amount'=> 0,
                         'created_at' => $order->created_at,
                         'updated_at' => $order->updated_at,
                         'is_gift'=> true,
@@ -495,9 +497,10 @@ class OrderService
      * @param int $quantity
      * @param int|null $shippingAddressId
      * @param int|null $couponId
+     * @param int|null $bargainOrderId
      * @return array
      */
-    public function verifyQuickOrder(User $user, int $skuId, int $quantity, ?int $shippingAddressId = null, ?int $couponId = null)
+    public function verifyQuickOrder(User $user, int $skuId, int $quantity, ?int $shippingAddressId = null, ?int $couponId = null, ?int $bargainOrderId = null)
     {
         $sku = ProductSku::online()->findOrFail($skuId);
 
@@ -506,7 +509,7 @@ class OrderService
             'quantity' => $quantity,
         ];
 
-        return $this->verifyOrder($user, [$product], $shippingAddressId, $couponId);
+        return $this->verifyOrder($user, [$product], $shippingAddressId, $couponId, $bargainOrderId);
     }
 
     /**
@@ -533,9 +536,10 @@ class OrderService
      * @param array $products
      * @param int|null $shippingAddressId
      * @param int|null $couponId
+     * @param int|null $bargainOrderId
      * @return array
      */
-    protected function verifyOrder(User $user, array $products, ?int $shippingAddressId = null, ?int $couponId = null): array
+    protected function verifyOrder(User $user, array $products, ?int $shippingAddressId = null, ?int $couponId = null, ?int $bargainOrderId = null): array
     {
         // 获取收货地址
         $shippingAddress = $this->getShippingAddress($user, $shippingAddressId);
@@ -547,7 +551,12 @@ class OrderService
             $coupon = $user->coupons()->onlyAvailable()->findOrFail($couponId);
         }
 
-        $mapProducts = $this->mapProducts($user, $products, $coupon);
+        $bargainOrder = null;
+        if ($bargainOrderId) {
+            $bargainOrder = $user->bargainOrders()->findOrFail($bargainOrderId);
+        }
+
+        $mapProducts = $this->mapProducts($user, $products, $coupon, $bargainOrder);
 
         // 是否支持配送
         $shippingSupported = true;
@@ -568,9 +577,10 @@ class OrderService
             $vipDiscountAmount,
             $couponDiscountAmount,
             $salesValue,
+            $bargainAmount,
         ) = $this->calculateFees($mapProducts);
 
-        $totalAmount = $productsTotalAmount - $couponDiscountAmount - $vipDiscountAmount;
+        $totalAmount = $productsTotalAmount - $couponDiscountAmount - $vipDiscountAmount - $bargainAmount;
 
         if ($totalAmount < 0) {
             $totalAmount = 0;
@@ -593,6 +603,7 @@ class OrderService
             'vip_discount_amount' => trim_trailing_zeros(bcdiv($vipDiscountAmount, 100, 2)), // 会员折扣金额
             'coupon_discount_amount' => trim_trailing_zeros(bcdiv($couponDiscountAmount, 100, 2)), // 优惠券折扣金额
             'total_amount' => trim_trailing_zeros(bcdiv($totalAmount, 100, 2)), // 实付金额
+            'bargain_amount' => trim_trailing_zeros(bcdiv($bargainAmount, 100, 2)), //砍价金额
         ];
     }
 
@@ -608,12 +619,14 @@ class OrderService
         $vipDiscountAmount = 0;
         $couponDiscountAmount = 0;
         $salesValue = 0;
+        $bargainAmount = 0;
 
         foreach ($products as $product) {
             $productsTotalAmount += $product['total_amount'];
             $vipDiscountAmount += $product['vip_discount_amount'];
             $couponDiscountAmount += $product['coupon_discount_amount'];
             $salesValue = bcadd($salesValue, $product['total_sales_value']);
+            $bargainAmount += $product['bargain_amount'];
         }
 
         return [
@@ -621,6 +634,7 @@ class OrderService
             $vipDiscountAmount,
             $couponDiscountAmount,
             $salesValue,
+            $bargainAmount,
         ];
     }
 
@@ -675,14 +689,13 @@ class OrderService
      * @param \App\Models\User $user
      * @param array $products
      * @param \App\Models\UserCoupon|null $coupon
-     * @param \App\Models\BargainOrder|null $bargainOrder
      * @return array
      *
      * @throws \App\Exceptions\BizException
      */
-    protected function mapProducts(User $user, array $products, ?UserCoupon $coupon, ?BargainOrder $bargainOrder): array
+    protected function mapProducts(User $user, array $products, ?UserCoupon $coupon, ?BargainOrder $bargainOrder = null): array
     {
-        $_products = collect($products)->map(function ($item) use ($user, $bargainOrder) {
+        $_products = collect($products)->map(function ($item) use ($user) {
             $sku = $item['sku'];
 
             return array_merge($item, [
@@ -696,11 +709,20 @@ class OrderService
                 'total_amount' => $sku->sell_price * $item['quantity'],
                 // 总销售值
                 'total_sales_value' => bcmul($sku->sales_value, $item['quantity'], 2),
-                //填入砍价金额
+                //砍价金额
-                'bargain_amount'=> $bargainOrder?->bargain_price ?? 0,
+                'bargain_amount' => 0,
             ]);
         });
 
+        //处理砍价金额
+        if ($bargainOrder) {
+            $bargainDiscountAmount = $this->getBargainDiscountAmount($bargainOrder, $_products->all());
+            $_products = $_products->map(function ($item) use ($bargainDiscountAmount) {
+                $item['bargain_amount'] = $bargainDiscountAmount[$item['sku']->id] ?? 0;
+                return $item;
+            });
+        }
+
         if ($coupon === null) {
             return $_products->all();
         }
@@ -808,6 +830,49 @@ class OrderService
         return $amounts;
     }
 
+    /**
+     *
+     */
+    protected function getBargainDiscountAmount(BargainOrder $bargainOrder, array $products): array
+    {
+        // 砍价的商品
+        $amounts = [];
+        foreach ($products as $item) {
+            $sku = $item['sku'];
+
+            $amount = $item['total_amount'] - $item['vip_discount_amount'];
+
+            // 仅保留商品真实总额大于0的商品
+            if ($amount > 0) {
+                $amounts[$sku->id] = $amount;
+            }
+        }
+
+        // 全部商品总额
+        $totalAmount = array_sum($amounts);
+
+
+        $bargainAmount = $bargainOrder->bargain_price ?? 0;
+
+        // 待计算优惠的商品总数
+        $i = count($amounts);
+
+        foreach ($amounts as &$amount) {
+            $i--;
+
+            if ($i > 0) {
+                $amount = (int) bcdiv(bcmul($bargainAmount, $amount, 0), $totalAmount, 2);
+                $bargainAmount -= $amount;
+            } else {
+                $amount = $bargainAmount;
+            }
+
+            unset($amount);
+        }
+
+        return $amounts;
+    }
+
     /**
      * 根据购物车获取商品
      *