Add UPTIME favicon, add mobile PWA meta, tags and manifest links

sw.js

@@ -0,0 +1,79 @@
+const CACHE_NAME = 'sysadmin-arcade-v1';
+
+const PRECACHE_URLS = [
+  './',
+  './index.html',
+  './games.json',
+  './manifest.webmanifest',
+  './games/uptime/uptime-incident-response.html',
+  './games/uptime/manifest.webmanifest',
+  './games/uptime/favicon/favicon.svg',
+  './games/uptime/favicon/favicon.ico',
+  './games/uptime/favicon/favicon-16.png',
+  './games/uptime/favicon/favicon-32.png',
+  './games/uptime/favicon/favicon-180.png',
+  './games/uptime/favicon/favicon-192.png',
+  './games/uptime/favicon/favicon-512.png'
+];
+
+const cacheUrl = (path) => new URL(path, self.registration.scope).href;
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME)
+      .then((cache) => cache.addAll(PRECACHE_URLS.map(cacheUrl)))
+      .then(() => self.skipWaiting())
+  );
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys()
+      .then((keys) => Promise.all(
+        keys
+          .filter((key) => key !== CACHE_NAME)
+          .map((key) => caches.delete(key))
+      ))
+      .then(() => self.clients.claim())
+  );
+});
+
+self.addEventListener('fetch', (event) => {
+  const { request } = event;
+  const url = new URL(request.url);
+
+  if (request.method !== 'GET' || url.origin !== self.location.origin) return;
+
+  if (request.mode === 'navigate') {
+    event.respondWith(
+      fetch(request)
+        .then((response) => {
+          const responseCopy = response.clone();
+          caches.open(CACHE_NAME).then((cache) => cache.put(request, responseCopy));
+          return response;
+        })
+        .catch(async () => {
+          const fallback = url.pathname.includes('/games/uptime/')
+            ? './games/uptime/uptime-incident-response.html'
+            : './index.html';
+
+          return await caches.match(request) || await caches.match(cacheUrl(fallback));
+        })
+    );
+    return;
+  }
+
+  event.respondWith(
+    caches.match(request).then((cachedResponse) => {
+      if (cachedResponse) return cachedResponse;
+
+      return fetch(request).then((response) => {
+        if (!response || response.status !== 200 || response.type !== 'basic') return response;
+
+        const responseCopy = response.clone();
+        caches.open(CACHE_NAME).then((cache) => cache.put(request, responseCopy));
+        return response;
+      });
+    })
+  );
+});