feat: whyrating - initial project from turbostarter boilerplate

packages/billing/src/providers/polar/subscription.ts

@@ -0,0 +1,37 @@
+import { HttpStatusCode } from "@turbostarter/shared/constants";
+import { logger } from "@turbostarter/shared/logger";
+import { HttpException } from "@turbostarter/shared/utils";
+
+import { config } from "../../config";
+import { getCustomerByCustomerId, updateCustomer } from "../../lib/customer";
+
+import { polar } from "./client";
+import { toBillingStatus } from "./mappers/to-billing-status";
+
+export const subscriptionStatusChangeHandler = async ({
+  id,
+}: {
+  id: string;
+}) => {
+  const subscription = await polar().subscriptions.get({ id });
+
+  const customer = await getCustomerByCustomerId(subscription.customerId);
+
+  if (!customer) {
+    throw new HttpException(HttpStatusCode.NOT_FOUND, {
+      code: "billing:error.customerNotFound",
+    });
+  }
+
+  const priceId = subscription.productId;
+  const plan = config.plans.find((p) => p.prices.find((x) => x.id === priceId));
+
+  await updateCustomer(customer.userId, {
+    status: toBillingStatus(subscription.status),
+    ...(plan && { plan: plan.id }),
+  });
+
+  logger.info(
+    `✅ Subscription status changed for user ${customer.userId} to ${subscription.status}`,
+  );
+};