From 8d60c31aa7981432a3d905ca61182d6eb4bd9085 Mon Sep 17 00:00:00 2001
From: maziggy <mz@v8w.de>
Date: Mon, 23 Mar 2026 15:32:06 +0100
Subject: [PATCH]   Force-clear service worker and caches on SpoolBuddy kiosk
 load
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  Just unregistering the SW wasn't enough — the old SW still controlled
  the page for that load. Now detects if any SW exists, nukes all SWs
  and caches, then reloads once to get a clean fetch from the server.
  Subsequent loads skip this since no SW is registered.
---
 frontend/index.html | 9 +++++++--
 static/index.html   | 9 +++++++--
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/frontend/index.html b/frontend/index.html
index 3ee2d0cab..0fea17051 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -32,9 +32,14 @@
     <script>
       if ('serviceWorker' in navigator) {
         if (location.pathname.startsWith('/spoolbuddy')) {
-          // Kiosk mode — unregister any existing SW to avoid stale cache
+          // Kiosk mode — nuke SW and all caches, then reload once to get clean state
           navigator.serviceWorker.getRegistrations().then((regs) => {
-            regs.forEach((r) => r.unregister());
+            if (regs.length > 0) {
+              Promise.all([
+                ...regs.map((r) => r.unregister()),
+                caches.keys().then((names) => Promise.all(names.map((n) => caches.delete(n)))),
+              ]).then(() => location.reload());
+            }
           });
         } else {
           window.addEventListener('load', () => {
diff --git a/static/index.html b/static/index.html
index 0af13adaa..da695df4f 100644
--- a/static/index.html
+++ b/static/index.html
@@ -33,9 +33,14 @@
     <script>
       if ('serviceWorker' in navigator) {
         if (location.pathname.startsWith('/spoolbuddy')) {
-          // Kiosk mode — unregister any existing SW to avoid stale cache
+          // Kiosk mode — nuke SW and all caches, then reload once to get clean state
           navigator.serviceWorker.getRegistrations().then((regs) => {
-            regs.forEach((r) => r.unregister());
+            if (regs.length > 0) {
+              Promise.all([
+                ...regs.map((r) => r.unregister()),
+                caches.keys().then((names) => Promise.all(names.map((n) => caches.delete(n)))),
+              ]).then(() => location.reload());
+            }
           });
         } else {
           window.addEventListener('load', () => {