newhub-spec · December 5, 2024 00:35 · Jul 28, 2021
diff --git a/create-payment-intent.ts b/create-payment-intent.ts
@@ -0,0 +1,47 @@
+import type { NextApiRequest, NextApiResponse } from "next";
+import { LineItem } from "../../utils/types/wooCommerceTypes";
+import { retrieveProductById } from "../../utils/wooCommerceApi";
+import { PaymentIntent } from "../../utils/types/stripeTypes";
+const stripe = require("stripe")(process.env.STRIPE_SECRET_KEY);
+
+// retrieve product price from WooCommerce based on ID and multiply by quantity
+const getProductTotal = async (lineItem: LineItem) => {
+  let product: LineItem = await retrieveProductById(
+    lineItem.product_id.toString()
+  );
+  let productTotal = lineItem.quantity * (parseFloat(product.price!) * 100);
+  return productTotal;
+};
+
+// map through lineItems and get the total for each lineItem and return sum of totals
+const calculateTotalAmount = async (lineItems: LineItem[]) => {
+  const total = await Promise.all(
+    lineItems.map((lineItem) => {
+      return getProductTotal(lineItem);
+    })
+  ).then((res) => {
+    return res.reduce((curr, next) => curr + next);
+  });
+  return total;
+};
+
+export default async function handler(
+  req: NextApiRequest,
+  // NOTE: not necessary to define at the moment because the response has an <any> type //
+  res: NextApiResponse<PaymentIntent>
+) {
+  const data: LineItem[] = req.body;
+
+  try {
+    const paymentIntent = await stripe.paymentIntents.create({
+      amount: await calculateTotalAmount(data),
+      currency: "gbp",
+    });
+    res.json({
+      paymentIntentId: paymentIntent.id,
+      clientSecret: paymentIntent.client_secret,
+    });
+  } catch (error) {
+    throw new Error(error);
+  }
+}