| // Minimal offline app-shell cache — deliberately narrow: only the small set | |
| // of same-origin static files that make up the page itself. Never touches | |
| // the chat API (cross-origin, and never GET) or the CDN libraries (marked, | |
| // DOMPurify, pdf.js, highlight.js, the Google Font) — those should always | |
| // go through the browser's normal cache/network so a library update or a | |
| // worker deploy is picked up immediately, not stuck behind a stale SW cache. | |
| const CACHE_NAME = 'nox-shell-v2'; | |
| const APP_SHELL = [ | |
| './', | |
| './index.html', | |
| './manifest.json', | |
| './devseis-logo.png', | |
| './icon-192.png', | |
| './icon-192-alert.png', | |
| './icon-512.png', | |
| ]; | |
| self.addEventListener('install', (event) => { | |
| event.waitUntil( | |
| caches.open(CACHE_NAME).then((cache) => cache.addAll(APP_SHELL)).catch(() => {}) | |
| ); | |
| self.skipWaiting(); | |
| }); | |
| self.addEventListener('activate', (event) => { | |
| event.waitUntil( | |
| caches.keys().then((keys) => | |
| Promise.all(keys.filter((k) => k !== CACHE_NAME).map((k) => caches.delete(k))) | |
| ) | |
| ); | |
| self.clients.claim(); | |
| }); | |
| self.addEventListener('fetch', (event) => { | |
| const req = event.request; | |
| if (req.method !== 'GET') return; | |
| const url = new URL(req.url); | |
| if (url.origin !== self.location.origin) return; | |
| if (!APP_SHELL.some((p) => url.pathname.endsWith(p.replace('./', '')) || (p === './' && url.pathname === '/'))) return; | |
| // Network-first so a redeploy is visible on next load when online; falls | |
| // back to the cached shell only when the network actually fails (offline). | |
| event.respondWith( | |
| fetch(req) | |
| .then((res) => { | |
| const copy = res.clone(); | |
| caches.open(CACHE_NAME).then((cache) => cache.put(req, copy)).catch(() => {}); | |
| return res; | |
| }) | |
| .catch(() => caches.match(req)) | |
| ); | |
| }); | |