paypal对接

packages/Webkul/BagistoApi/src/Dto/CartData.php

@@ -348,4 +348,8 @@ class CartData
     #[Groups(['query', 'mutation'])]
     #[ApiProperty(description: 'Order ID after successful order creation')]
     public ?string $orderIncrementId = null;
+
+    #[Groups(['query', 'mutation'])]
+    #[ApiProperty(description: 'Payment transaction ID returned by gateway')]
+    public ?string $paymentTransactionId = null;
 }

packages/Webkul/BagistoApi/src/State/CheckoutProcessor.php

@@ -18,6 +18,7 @@ use Webkul\Checkout\Facades\Cart;
 use Webkul\Checkout\Models\CartAddress;
 use Webkul\Checkout\Repositories\CartRepository;
 use Webkul\Customer\Repositories\CustomerRepository;
+use Webkul\Paypal\Payment\SmartButton;
 use Webkul\Sales\Repositories\OrderRepository;
 
 /**
@@ -319,21 +320,33 @@ class CheckoutProcessor implements ProcessorInterface
             Cart::setCart($cart);
             Cart::collectTotals();
 
+            $paymentTransactionId = $this->resolvePaymentTransactionId($cart);
+
             $orderData = $this->buildOrderDataFromCart($cart);
             $order = $this->orderRepository->create($orderData);
 
-            if (! $order || ! $order->id) {
+            $createdOrderId = data_get($order, 'id');
+
+            if (! $order || ! $createdOrderId) {
                 throw new \Exception(__('bagistoapi::app.graphql.checkout.order-creation-failed'));
             }
 
-            $orderId = $order->id;
+            $orderId = $createdOrderId;
             $order = $this->orderRepository->find($orderId);
 
             if (! $order) {
                 throw new \Exception(__('bagistoapi::app.graphql.checkout.order-retrieval-failed', ['orderId' => $orderId]));
             }
 
-            Cart::deActivateCart($cart);
+            if ($paymentTransactionId && $order->payment) {
+                $additionalData = $order->payment->additional ?? [];
+                $additionalData['paypal_order_id'] = $paymentTransactionId;
+
+                $order->payment->additional = $additionalData;
+                $order->payment->save();
+            }
+
+            Cart::deActivateCart();
 
             // Dispatch event for order creation (for push notifications)
             Event::dispatch('order.created.after', $order);
@@ -342,6 +355,7 @@ class CheckoutProcessor implements ProcessorInterface
                 'id'        => $cart->id,
                 'cartToken' => (string) ($cart->guest_cart_token ?? $cart->customer_id),
                 'orderId'   => (string) $order->id,
+                'paymentTransactionId' => $paymentTransactionId,
             ];
 
             return $response;
@@ -360,6 +374,53 @@ class CheckoutProcessor implements ProcessorInterface
         return $orderResource->jsonSerialize();
     }
 
+    /**
+     * Resolve payment transaction id for gateway methods.
+     */
+    private function resolvePaymentTransactionId($cart): ?string
+    {
+        $paymentMethod = $cart->payment?->method;
+
+        if ($paymentMethod !== 'paypal_smart_button') {
+            return null;
+        }
+
+        $smartButton = app(SmartButton::class);
+
+        $paypalOrder = $smartButton->createOrder($this->buildPayPalOrderRequestBody($cart, $smartButton));
+
+        $paypalOrderId = $paypalOrder->result->id ?? null;
+
+        if (! $paypalOrderId) {
+            throw new \Exception('Failed to create PayPal order transaction.');
+        }
+
+        return (string) $paypalOrderId;
+    }
+
+    /**
+     * Build PayPal create-order payload for Smart Button.
+     */
+    private function buildPayPalOrderRequestBody($cart, SmartButton $smartButton): array
+    {
+        $shippingAmount = (float) ($cart->selected_shipping_rate?->price ?? 0);
+        $discountAmount = (float) ($cart->discount_amount ?? 0);
+        $subTotal = (float) ($cart->sub_total ?? 0);
+        $taxTotal = (float) ($cart->tax_total ?? 0);
+        $grandTotal = $subTotal + $taxTotal + $shippingAmount - $discountAmount;
+
+        return [
+            'intent'         => 'CAPTURE',
+            'purchase_units' => [[
+                'reference_id' => (string) $cart->id,
+                'amount'       => [
+                    'currency_code' => $cart->cart_currency_code,
+                    'value'         => $smartButton->formatCurrencyValue($grandTotal),
+                ],
+            ]],
+        ];
+    }
+
     /**
      * Validate order can be created.
      */