// ── Version check — detect stale app and show update overlay ── (function() { var CURRENT_VERSION = '2026-03-27a'; try { var stored = localStorage.getItem('townik_app_version'); // Check server version (network-only, bypass cache) fetch('/version.json?_=' + Date.now(), { cache: 'no-store' }) .then(function(r) { return r.json(); }) .then(function(d) { if (d.v && stored && d.v !== stored) { // Version mismatch — clear caches and show update screen if ('caches' in window) { caches.keys().then(function(keys) { keys.forEach(function(k) { caches.delete(k); }); }); } var overlay = document.createElement('div'); overlay.id = 'townik-update-overlay'; overlay.innerHTML = '

' + '

New Update Available!

' + '

We have made improvements to the app. Tap below to get the latest version.

' + '' + '

'; document.body.appendChild(overlay); } else { // Store current version localStorage.setItem('townik_app_version', d.v || CURRENT_VERSION); // Deploy push broadcast is triggered by Vercel cron (see vercel.json), // not by the browser — the endpoint requires CRON_SECRET auth. } }).catch(function() {}); } catch(e) { // Best-effort: version check failure is non-critical console.warn('Non-critical: version check failed:', e); } })(); // ── Service worker registration ── if ('serviceWorker' in navigator) { window.addEventListener('load', function() { navigator.serviceWorker.register('/sw.js').then(function(reg) { setInterval(function() { reg.update(); }, 60000); reg.addEventListener('updatefound', function() { var newSW = reg.installing; if (newSW) { newSW.addEventListener('statechange', function() { if (newSW.state === 'activated') { // Show update banner var banner = document.createElement('div'); banner.id = 'townik-update'; banner.innerHTML = '

✨App updated! Tap here to refresh.Refresh

'; if (!document.getElementById('townik-update')) { document.body.appendChild(banner); } setTimeout(function() { if (!document.querySelector('input:focus, textarea:focus')) { window.location.reload(); } }, 5000); } }); } }); }); }); }

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