From 4aaffe99c79a44dbcd2743134dbcc8971bd6afea Mon Sep 17 00:00:00 2001
From: Michilis <michael@azzamo.be>
Date: Mon, 16 Feb 2026 22:42:55 +0000
Subject: [PATCH] Fix stale featured event on homepage: revalidate cache when
 featured event changes

- Extract revalidateFrontendCache() to backend/src/lib/revalidate.ts
- Call revalidation from site-settings when featuredEventId is set/cleared
- Ensures homepage shows updated featured event after admin changes

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 backend/src/lib/revalidate.ts       | 22 ++++++++++++++++++++++
 backend/src/routes/events.ts        | 24 +-----------------------
 backend/src/routes/site-settings.ts | 12 ++++++++++++
 3 files changed, 35 insertions(+), 23 deletions(-)
 create mode 100644 backend/src/lib/revalidate.ts

diff --git a/backend/src/lib/revalidate.ts b/backend/src/lib/revalidate.ts
new file mode 100644
index 0000000..5c7421f
--- /dev/null
+++ b/backend/src/lib/revalidate.ts
@@ -0,0 +1,22 @@
+// Trigger frontend cache revalidation (fire-and-forget)
+// Revalidates both the sitemap and the next-event data (homepage, llms.txt)
+export function revalidateFrontendCache() {
+  const frontendUrl = process.env.FRONTEND_URL || 'http://localhost:3002';
+  const secret = process.env.REVALIDATE_SECRET;
+  if (!secret) {
+    console.warn('REVALIDATE_SECRET not set, skipping frontend revalidation');
+    return;
+  }
+  fetch(`${frontendUrl}/api/revalidate`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ secret, tag: ['events-sitemap', 'next-event'] }),
+  })
+    .then((res) => {
+      if (!res.ok) console.error('Frontend revalidation failed:', res.status);
+      else console.log('Frontend revalidation triggered (sitemap + next-event)');
+    })
+    .catch((err) => {
+      console.error('Frontend revalidation error:', err.message);
+    });
+}
diff --git a/backend/src/routes/events.ts b/backend/src/routes/events.ts
index b2ca8c6..4a1c1a5 100644
--- a/backend/src/routes/events.ts
+++ b/backend/src/routes/events.ts
@@ -5,6 +5,7 @@ import { db, dbGet, dbAll, events, tickets, payments, eventPaymentOverrides, ema
 import { eq, desc, and, gte, sql } from 'drizzle-orm';
 import { requireAuth, getAuthUser } from '../lib/auth.js';
 import { generateId, getNow, convertBooleansForDb, toDbDate, calculateAvailableSeats } from '../lib/utils.js';
+import { revalidateFrontendCache } from '../lib/revalidate.js';
 
 interface UserContext {
   id: string;
@@ -15,29 +16,6 @@ interface UserContext {
 
 const eventsRouter = new Hono<{ Variables: { user: UserContext } }>();
 
-// Trigger frontend cache revalidation (fire-and-forget)
-// Revalidates both the sitemap and the next-event data (homepage, llms.txt)
-function revalidateFrontendCache() {
-  const frontendUrl = process.env.FRONTEND_URL || 'http://localhost:3002';
-  const secret = process.env.REVALIDATE_SECRET;
-  if (!secret) {
-    console.warn('REVALIDATE_SECRET not set, skipping frontend revalidation');
-    return;
-  }
-  fetch(`${frontendUrl}/api/revalidate`, {
-    method: 'POST',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ secret, tag: ['events-sitemap', 'next-event'] }),
-  })
-    .then((res) => {
-      if (!res.ok) console.error('Frontend revalidation failed:', res.status);
-      else console.log('Frontend revalidation triggered (sitemap + next-event)');
-    })
-    .catch((err) => {
-      console.error('Frontend revalidation error:', err.message);
-    });
-}
-
 // Helper to normalize event data for API response
 // PostgreSQL decimal returns strings, booleans are stored as integers
 function normalizeEvent(event: any) {
diff --git a/backend/src/routes/site-settings.ts b/backend/src/routes/site-settings.ts
index 2421ad5..db35dc6 100644
--- a/backend/src/routes/site-settings.ts
+++ b/backend/src/routes/site-settings.ts
@@ -5,6 +5,7 @@ import { db, dbGet, siteSettings, events } from '../db/index.js';
 import { eq, and, gte } from 'drizzle-orm';
 import { requireAuth } from '../lib/auth.js';
 import { generateId, getNow, toDbBool } from '../lib/utils.js';
+import { revalidateFrontendCache } from '../lib/revalidate.js';
 
 interface UserContext {
   id: string;
@@ -172,6 +173,11 @@ siteSettingsRouter.put('/', requireAuth(['admin']), zValidator('json', updateSit
     (db as any).select().from(siteSettings).where(eq((siteSettings as any).id, existing.id))
   );
   
+  // Revalidate frontend cache if featured event changed
+  if (data.featuredEventId !== undefined) {
+    revalidateFrontendCache();
+  }
+  
   return c.json({ settings: updated, message: 'Settings updated successfully' });
 });
 
@@ -216,6 +222,9 @@ siteSettingsRouter.put('/featured-event', requireAuth(['admin']), zValidator('js
     
     await (db as any).insert(siteSettings).values(newSettings);
     
+    // Revalidate frontend cache so homepage shows the updated featured event
+    revalidateFrontendCache();
+    
     return c.json({ featuredEventId: eventId, message: eventId ? 'Event set as featured' : 'Featured event removed' });
   }
   
@@ -229,6 +238,9 @@ siteSettingsRouter.put('/featured-event', requireAuth(['admin']), zValidator('js
     })
     .where(eq((siteSettings as any).id, existing.id));
   
+  // Revalidate frontend cache so homepage shows the updated featured event
+  revalidateFrontendCache();
+  
   return c.json({ featuredEventId: eventId, message: eventId ? 'Event set as featured' : 'Featured event removed' });
 });