Task 96ab3c0b: PWA manifest and service worker (#189)

2026-09-23 19:42:27 -04:00
parent 75ad9892b8
commit f476821e8e
12 changed files with 694 additions and 3 deletions
@@ -0,0 +1,14 @@
+{
+  "name": "NestQuest Admin",
+  "short_name": "NestQuest",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "background_color": "#f4f4f6",
+  "theme_color": "#3b3ab8",
+  "icons": [
+    { "src": "/icons/icon-192.png", "sizes": "192x192", "type": "image/png", "purpose": "any" },
+    { "src": "/icons/icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any" },
+    { "src": "/icons/icon-maskable-512.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" }
+  ]
+}
@@ -0,0 +1,88 @@
+/* NestQuest Admin service worker — hand-written, served from the site root.
+   Precaches the app shell, serves static assets cache-first, and falls back
+   to the cached shell for navigations when offline. Only same-origin GET
+   requests are handled; cross-origin requests (Authentik, the API host) are
+   never intercepted or cached.
+   The build (vite-sw-plugin.ts) replaces PRECACHE_ASSETS with the hashed
+   bundles referenced by index.html and the revision marker with a content
+   hash, so each release installs a new worker with fresh caches. */
+
+const REVISION = "__NQ_BUILD_REVISION__";
+const CACHE_PREFIX = "nestquest-admin-";
+const SHELL_CACHE = `${CACHE_PREFIX}shell-${REVISION}`;
+const RUNTIME_CACHE = `${CACHE_PREFIX}runtime-${REVISION}`;
+const CURRENT_CACHES = [SHELL_CACHE, RUNTIME_CACHE];
+
+const PRECACHE_ASSETS = [];
+
+const SHELL_URLS = [
+  ...new Set([
+    "/",
+    "/index.html",
+    "/manifest.webmanifest",
+    "/icons/icon-192.png",
+    "/icons/icon-512.png",
+    "/icons/icon-maskable-512.png",
+    ...PRECACHE_ASSETS,
+  ]),
+];
+
+// Request destinations treated as static assets (cache-first). Anything else
+// same-origin (e.g. API calls) goes straight to the network.
+const STATIC_DESTINATIONS = ["script", "style", "image", "font", "manifest"];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches
+      .open(SHELL_CACHE)
+      .then((cache) => cache.addAll(SHELL_URLS))
+      .then(() => self.skipWaiting()),
+  );
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(
+    caches
+      .keys()
+      .then((keys) =>
+        Promise.all(
+          keys
+            .filter((key) => key.startsWith(CACHE_PREFIX) && !CURRENT_CACHES.includes(key))
+            .map((key) => caches.delete(key)),
+        ),
+      )
+      .then(() => self.clients.claim()),
+  );
+});
+
+self.addEventListener("fetch", (event) => {
+  const request = event.request;
+  if (request.method !== "GET") return;
+  if (new URL(request.url).origin !== self.location.origin) return;
+
+  if (request.mode === "navigate") {
+    event.respondWith(
+      fetch(request).catch(() =>
+        caches.match("/index.html", { cacheName: SHELL_CACHE }).then(
+          (cached) => cached || Response.error(),
+        ),
+      ),
+    );
+    return;
+  }
+
+  if (STATIC_DESTINATIONS.includes(request.destination)) {
+    event.respondWith(cacheFirst(request));
+  }
+});
+
+async function cacheFirst(request) {
+  const cached = await caches.match(request);
+  if (cached) return cached;
+  const response = await fetch(request);
+  if (response.ok && response.type === "basic") {
+    const cache = await caches.open(RUNTIME_CACHE);
+    await cache.put(request, response.clone());
+  }
+  return response;
+}