From c9ef5768e0fa0b819c647cf6aefd0850e436652d Mon Sep 17 00:00:00 2001
From: yootus <151767033+yootus@users.noreply.github.com>
Date: Sun, 30 Aug 2026 00:33:14 +0800
Subject: [PATCH] fix(order): calculate invitation commission after balance
 deduction (#1020)

Calculate invitation commission from the amount remaining after balance deductions, preventing duplicate commission on internally credited payments.
---
 app/Services/OrderService.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/Services/OrderService.php b/app/Services/OrderService.php
index 1761315..6651eaa 100644
--- a/app/Services/OrderService.php
+++ b/app/Services/OrderService.php
@@ -74,12 +74,14 @@ class OrderService
 
             $orderService->setVipDiscount($user);
             $orderService->setOrderType($user);
-            $orderService->setInvite(user: $user);
 
             if ($user->balance && $order->total_amount > 0) {
                 $orderService->handleUserBalance($user, $userService);
             }
 
+            // 余额抵扣后的 total_amount 才是用户实际支付金额，返利必须基于该金额计算。
+            $orderService->setInvite(user: $user);
+
             if (!$order->save()) {
                 throw new ApiException(__('Failed to create order'));
             }