Fix healthcheck endpoint (#288)

* fix healthcheck db query

apps/e2e/tests/healthcheck.spec.ts

@@ -0,0 +1,18 @@
+import { expect, test } from '@playwright/test';
+
+// Simple healthcheck test to verify the API is up and the database responds
+
+test.describe('Healthcheck endpoint', () => {
+  test('returns healthy status', async ({ request }) => {
+    const response = await request.get('/healthcheck');
+
+    expect(response.status()).toBe(200);
+
+    const body = await response.json();
+    expect(body).toEqual(
+      expect.objectContaining({
+        services: expect.objectContaining({ database: true }),
+      }),
+    );
+  });
+});

apps/web/app/healthcheck/route.ts

@@ -26,11 +26,12 @@ async function getSupabaseHealthCheck() {
   try {
     const client = getSupabaseServerAdminClient();
 
-    const { error } = await client.rpc('is_set', {
+    const { data, error } = await client
-      field_name: 'billing_provider',
+      .from('config')
-    });
+      .select('billing_provider')
+      .single();
 
-    return !error;
+    return !error && Boolean(data?.billing_provider);
   } catch {
     return false;
   }