Files
xdrop/apps/web/public/sw.js
T

84 lines
1.8 KiB
JavaScript

const CACHE_NAME = 'xdrop-static-v4'
const STATIC_ASSETS = [
'/manifest.webmanifest',
'/brand-symbol.svg',
'/favicon.svg',
'/brand-symbol-maskable.svg',
'/brand-symbol-192.png',
'/brand-symbol-512.png',
'/brand-symbol-maskable-512.png',
'/brand-lockup-horizontal.svg',
'/brand-lockup-horizontal.png',
'/apple-touch-icon.png',
'/icons.svg',
]
self.addEventListener('install', (event) => {
event.waitUntil(
caches
.open(CACHE_NAME)
.then((cache) => cache.addAll(STATIC_ASSETS))
.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.request
if (request.method !== 'GET') {
return
}
const url = new URL(request.url)
if (
url.origin !== self.location.origin ||
url.pathname.startsWith('/api/') ||
url.pathname.startsWith('/xdrop/')
) {
return
}
if (request.mode === 'navigate') {
event.respondWith(fetch(request))
return
}
if (!shouldCache(url.pathname)) {
return
}
event.respondWith(
caches.match(request).then((cached) => {
if (cached) {
return cached
}
return fetch(request)
.then((response) => {
if (!response.ok || response.type === 'opaque') {
return response
}
const copy = response.clone()
void caches.open(CACHE_NAME).then((cache) => cache.put(request, copy))
return response
})
.catch(() => cached)
}),
)
})
function shouldCache(pathname) {
return pathname.startsWith('/assets/') || STATIC_ASSETS.includes(pathname)
}