58 lines
1.8 KiB
JavaScript
58 lines
1.8 KiB
JavaScript
const CACHE_NAME = "checkflow-v2";
|
|
const STATIC_ASSETS = ["/manifest.json", "/icons/icon.svg"];
|
|
|
|
self.addEventListener("install", (event) => {
|
|
event.waitUntil(
|
|
caches.open(CACHE_NAME).then((cache) => cache.addAll(STATIC_ASSETS)).catch(() => {})
|
|
);
|
|
self.skipWaiting();
|
|
});
|
|
|
|
self.addEventListener("activate", (event) => {
|
|
event.waitUntil(
|
|
caches.keys().then((keys) =>
|
|
Promise.all(keys.filter((k) => k !== CACHE_NAME).map((k) => caches.delete(k)))
|
|
)
|
|
);
|
|
self.clients.claim();
|
|
});
|
|
|
|
self.addEventListener("fetch", (event) => {
|
|
const { request } = event;
|
|
const url = new URL(request.url);
|
|
|
|
// Only handle http/https GET requests to the same origin
|
|
if (request.method !== "GET" || !url.protocol.startsWith("http") || url.origin !== self.location.origin) {
|
|
return;
|
|
}
|
|
|
|
// Network-first for API & navigation routes to avoid stale/failed page loads
|
|
if (url.pathname.startsWith("/api") || request.mode === "navigate") {
|
|
event.respondWith(
|
|
fetch(request).catch(() => {
|
|
if (url.pathname.startsWith("/api")) {
|
|
return new Response(JSON.stringify({ error: "Offline or service unavailable" }), {
|
|
headers: { "Content-Type": "application/json" },
|
|
});
|
|
}
|
|
return caches.match(request).then((cached) => cached || Response.error());
|
|
})
|
|
);
|
|
return;
|
|
}
|
|
|
|
// Cache-first for static assets with safe network fallback
|
|
event.respondWith(
|
|
caches.match(request).then((cached) => {
|
|
if (cached) return cached;
|
|
return fetch(request).then((response) => {
|
|
if (response && response.status === 200 && response.type === "basic") {
|
|
const clone = response.clone();
|
|
caches.open(CACHE_NAME).then((cache) => cache.put(request, clone)).catch(() => {});
|
|
}
|
|
return response;
|
|
}).catch(() => Response.error());
|
|
})
|
|
);
|
|
});
|