1 files changed, 44 insertions, 0 deletions
diff --git a/src/frontend/pages/api/checkout.ts b/src/frontend/pages/api/checkout.ts
new file mode 100644
index 0000000..6007ba2
--- /dev/null
+++ b/src/frontend/pages/api/checkout.ts
@@ -0,0 +1,44 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { NextApiRequest, NextApiResponse } from 'next';
+import InstrumentationMiddleware from '../../utils/telemetry/InstrumentationMiddleware';
+import CheckoutGateway from '../../gateways/rpc/Checkout.gateway';
+import { Empty, PlaceOrderRequest } from '../../protos/demo';
+import { IProductCheckoutItem, IProductCheckout } from '../../types/Cart';
+import ProductCatalogService from '../../services/ProductCatalog.service';
+
+type TResponse = IProductCheckout | Empty;
+
+const handler = async ({ method, body, query }: NextApiRequest, res: NextApiResponse<TResponse>) => {
+  switch (method) {
+    case 'POST': {
+      const { currencyCode = '' } = query;
+      const orderData = body as PlaceOrderRequest;
+      const { order: { items = [], ...order } = {} } = await CheckoutGateway.placeOrder(orderData);
+
+      const productList: IProductCheckoutItem[] = await Promise.all(
+        items.map(async ({ item: { productId = '', quantity = 0 } = {}, cost }) => {
+          const product = await ProductCatalogService.getProduct(productId, currencyCode as string);
+
+          return {
+            cost,
+            item: {
+              productId,
+              quantity,
+              product,
+            },
+          };
+        })
+      );
+
+      return res.status(200).json({ ...order, items: productList });
+    }
+
+    default: {
+      return res.status(405).send('');
+    }
+  }
+};
+
+export default InstrumentationMiddleware(handler);