- web/public/manifest.json with display=standalone, theme_color=#faff69, 192+512 icons - web/public/sw.js with app-shell cache strategy (API calls network-only) - web/public/icons/icon-192.png and icon-512.png generated via gen-icons.cjs - web/scripts/gen-icons.cjs pure-Node.js PNG icon generator (black canvas, volt H monogram) - web/src/hooks/usePWA.ts registers service worker on app load - web/index.html: added theme-color meta tag - web/src/App.tsx: calls usePWA() hook
56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
const CACHE_NAME = 'hwlab-shell-v1'
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// App shell assets to cache on install
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const SHELL_ASSETS = [
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'/',
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'/index.html',
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]
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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(SHELL_ASSETS))
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)
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self.skipWaiting()
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})
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self.addEventListener('activate', (event) => {
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// Remove old caches
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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.filter((k) => k !== CACHE_NAME).map((k) => caches.delete(k))
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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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self.addEventListener('fetch', (event) => {
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const url = new URL(event.request.url)
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// API requests: network only — never cache
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if (url.pathname.startsWith('/api/')) {
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return
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}
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// Navigation requests: serve from cache, fall back to network (app shell)
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if (event.request.mode === 'navigate') {
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event.respondWith(
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caches.match('/').then((cached) => cached ?? fetch(event.request))
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)
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return
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}
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// Static assets: cache-first
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event.respondWith(
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caches.match(event.request).then(
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(cached) => cached ?? fetch(event.request).then((response) => {
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if (response.ok && event.request.method === 'GET') {
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const clone = response.clone()
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caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone))
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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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