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sw.js
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sw.js
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const cacheName = "wa-share-V1";
self.addEventListener("install", event => {
console.log("👷", "install", event);
self.skipWaiting();
const contentToCache = ["/", "/index.html", "/util.js", "/logo.png"];
event.waitUntil(
(async () => {
const cache = await caches.open(cacheName);
console.log("[Service Worker] Caching all: app shell and content");
await cache.addAll(contentToCache);
})()
);
});
self.addEventListener("activate", event => {
console.log("👷", "activate", event);
return self.clients.claim();
});
self.addEventListener("fetch", event => {
// Regular requests not related to Web Share Target.
if (event.request.method !== "POST") {
event.respondWith(
(async () => {
console.log(`[Service Worker] Fetching resource: ${event.request.url}`);
let r, response;
try {
response = await fetch(event.request);
} catch {
r = await caches.match(event.request);
}
if (response) {
const cache = await caches.open(cacheName);
console.log(
`[Service Worker] Caching new resource: ${event.request.url}`
);
cache.put(event.request, response.clone());
} else if (r) {
console.log(
`[Service Worker] Using cached resource: ${event.request.url}`
);
response = r;
}
return response;
})()
);
return;
}
// Redirect to the form page
event.respondWith(Response.redirect("/index.html"));
// Requests related to Web Share Target.
event.waitUntil(
(async () => {
const formData = await event.request.formData();
const client = await self.clients.get(
event.resultingClientId || event.clientId
);
const files = formData.getAll("chat");
client.postMessage({ files: files, action: "chat" });
})()
);
});