Add Lemon Squeezy Billing System

packages/billing/lemon-squeezy/src/services/create-lemon-squeezy-billing-portal-session.ts

@@ -0,0 +1,27 @@
+import { getCustomer } from '@lemonsqueezy/lemonsqueezy.js';
+import { z } from 'zod';
+
+import { CreateBillingPortalSessionSchema } from '@kit/billing/schema';
+
+import { initializeLemonSqueezyClient } from './lemon-squeezy-sdk';
+
+/**
+ * Creates a LemonSqueezy billing portal session for the given parameters.
+ *
+ * @param {object} params - The parameters required to create the billing portal session.
+ * @return {Promise<string>} - A promise that resolves to the URL of the customer portal.
+ * @throws {Error} - If no customer is found with the given customerId.
+ */
+export async function createLemonSqueezyBillingPortalSession(
+  params: z.infer<typeof CreateBillingPortalSessionSchema>,
+) {
+  await initializeLemonSqueezyClient();
+
+  const customer = await getCustomer(params.customerId);
+
+  if (!customer?.data) {
+    throw new Error('No customer found');
+  }
+
+  return customer.data.data.attributes.urls.customer_portal;
+}