Make sw.js non-cacheable and self-update so the worker fix actually reaches clients

The sw.js file was cacheable (text/javascript, not covered by the HTML no-cache rule), so browsers/CDN kept serving the old v1 worker and never picked up the v2 fix. Serve sw.js with no-cache/no-store, call reg.update() on load, and reload once on controllerchange so stale cached pages are dropped immediately. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-28 21:24:02 +03:30
parent f0e0b82375
commit 7acf94695f
2 changed files with 18 additions and 3 deletions
@@ -221,7 +221,16 @@
    @* Register the PWA service worker (offline + push notifications). *@
    <script>
        if ('serviceWorker' in navigator) {
-            window.addEventListener('load', function () { navigator.serviceWorker.register('/sw.js').catch(function () {}); });
+            window.addEventListener('load', function () {
+                navigator.serviceWorker.register('/sw.js').then(function (reg) {
+                    reg.update();   // always check for a newer worker so fixes reach clients fast
+                    // When a new worker takes control, reload once so stale cached pages are dropped.
+                    var refreshed = false;
+                    navigator.serviceWorker.addEventListener('controllerchange', function () {
+                        if (refreshed) return; refreshed = true; location.reload();
+                    });
+                }).catch(function () {});
+            });
        }
    </script>

@@ -335,7 +335,12 @@ app.MapPost("/like", async (HttpContext ctx, AppDbContext db, [FromForm] string
    return Results.Json(new { liked, count });
 }).RequireAuthorization().DisableAntiforgery();

-app.MapGet("/sw.js", () => Results.Content("""
+app.MapGet("/sw.js", (HttpContext ctx) =>
+{
+    // The worker file must NEVER be cached — otherwise an old worker keeps serving stale pages and
+    // browsers never pick up a new version (the fix can't reach clients because the file is cached).
+    ctx.Response.Headers.CacheControl = "no-cache, no-store, must-revalidate";
+    return Results.Content("""
 const CACHE = 'hamkadr-v2';
 const OFFLINE = '<!doctype html><html lang="fa" dir="rtl"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>آفلاین</title><body style="font-family:Vazirmatn,system-ui,sans-serif;text-align:center;padding:48px 20px;color:#334155"><h2 style="margin:0 0 8px">اتصال اینترنت برقرار نیست</h2><p style="color:#64748b">صفحه باز نشد؛ اتصال خود را بررسی و دوباره تلاش کنید.</p><button onclick="location.reload()" style="margin-top:14px;padding:10px 24px;border:0;border-radius:10px;background:#0d9488;color:#fff;font:inherit;cursor:pointer">تلاش دوباره</button></body></html>';
 self.addEventListener('install', e => { self.skipWaiting(); e.waitUntil(caches.open(CACHE).then(c => c.add('/'))); });
@@ -368,7 +373,8 @@ self.addEventListener('notificationclick', e => {
  const url = (e.notification.data && e.notification.data.url) || '/';
  e.waitUntil(clients.matchAll({ type: 'window' }).then(cl => { for (const c of cl) { if ('focus' in c) { c.navigate(url); return c.focus(); } } return clients.openWindow(url); }));
 });
-""", "text/javascript"));
+""", "text/javascript");
+});

 // ---- SEO: robots.txt + dynamic sitemap.xml (so Google indexes every live shift/job page) ----
 app.MapGet("/robots.txt", (HttpContext ctx) =>