B2B-88: add starter kit structure and elements

app/api/billing/webhook/route.ts

@@ -0,0 +1,49 @@
+import { getPlanTypesMap } from '@kit/billing';
+import { getBillingEventHandlerService } from '@kit/billing-gateway';
+import { enhanceRouteHandler } from '@kit/next/routes';
+import { getLogger } from '@kit/shared/logger';
+import { getSupabaseServerAdminClient } from '@kit/supabase/server-admin-client';
+
+import billingConfig from '~/config/billing.config';
+
+/**
+ * @description Handle the webhooks from Stripe related to checkouts
+ */
+export const POST = enhanceRouteHandler(
+  async ({ request }) => {
+    const provider = billingConfig.provider;
+    const logger = await getLogger();
+
+    const ctx = {
+      name: 'billing.webhook',
+      provider,
+    };
+
+    logger.info(ctx, `Received billing webhook. Processing...`);
+
+    const supabaseClientProvider = () => getSupabaseServerAdminClient();
+
+    const service = await getBillingEventHandlerService(
+      supabaseClientProvider,
+      provider,
+      getPlanTypesMap(billingConfig),
+    );
+
+    try {
+      await service.handleWebhookEvent(request);
+
+      logger.info(ctx, `Successfully processed billing webhook`);
+
+      return new Response('OK', { status: 200 });
+    } catch (error) {
+      logger.error({ ...ctx, error }, `Failed to process billing webhook`);
+
+      return new Response('Failed to process billing webhook', {
+        status: 500,
+      });
+    }
+  },
+  {
+    auth: false,
+  },
+);