Christian Nennemann
2d56824834
Create sdks/web/ with a vanilla TypeScript web client: - IndexedDB local store for conversations, messages, and identity - WebSocket transport connecting to the server bridge - Service Worker with cache-first strategy for offline support - PWA manifest for installable web app - Dark-themed responsive UI with sidebar, messages, and input bar - Connection status badge and MLS epoch indicator in header - Unread message count badges on conversations
97 lines
2.3 KiB
JavaScript
97 lines
2.3 KiB
JavaScript
/**
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* quicproquo Service Worker — provides offline caching and background
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* notification support for the PWA.
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*/
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const CACHE_NAME = "qpq-cache-v1";
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const STATIC_ASSETS = [
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"/",
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"/index.html",
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"/style.css",
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"/app.js",
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"/manifest.json",
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];
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// Install: cache static assets.
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self.addEventListener("install", (event) => {
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event.waitUntil(
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caches.open(CACHE_NAME).then((cache) => cache.addAll(STATIC_ASSETS)),
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);
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self.skipWaiting();
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});
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// Activate: clean up old caches.
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self.addEventListener("activate", (event) => {
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event.waitUntil(
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caches.keys().then((keys) =>
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Promise.all(
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keys
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.filter((key) => key !== CACHE_NAME)
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.map((key) => caches.delete(key)),
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),
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),
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);
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self.clients.claim();
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});
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// Fetch: serve from cache, fall back to network.
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self.addEventListener("fetch", (event) => {
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// Only cache GET requests for same-origin resources.
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if (event.request.method !== "GET") return;
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event.respondWith(
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caches.match(event.request).then((cached) => {
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if (cached) return cached;
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return fetch(event.request).then((response) => {
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// Cache successful same-origin responses.
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if (
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response.ok &&
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new URL(event.request.url).origin === self.location.origin
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) {
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const clone = response.clone();
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caches.open(CACHE_NAME).then((cache) => {
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cache.put(event.request, clone);
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});
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}
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return response;
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});
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}),
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);
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});
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// Push notifications (future: wired to server push events).
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self.addEventListener("push", (event) => {
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if (!event.data) return;
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let payload;
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try {
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payload = event.data.json();
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} catch {
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payload = { title: "quicproquo", body: event.data.text() };
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}
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event.waitUntil(
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self.registration.showNotification(payload.title || "quicproquo", {
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body: payload.body || "New message",
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icon: "/icon-192.png",
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badge: "/icon-192.png",
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tag: payload.conversationId || "default",
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}),
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);
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});
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// Notification click: open the app.
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self.addEventListener("notificationclick", (event) => {
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event.notification.close();
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event.waitUntil(
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self.clients
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.matchAll({ type: "window" })
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.then((clients) => {
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if (clients.length > 0) {
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return clients[0].focus();
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}
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return self.clients.openWindow("/");
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}),
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);
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});
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