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/*
This file is part of keks-meet (https://codeberg.org/metamuffin/keks-meet)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2022 metamuffin <metamuffin@disroot.org>
*/
/// <reference no-default-lib="true"/>
/// <reference lib="esnext" />
/// <reference lib="webworker" />
declare const self: ServiceWorkerGlobalScope; export { };
console.log("hello from the keks-meet service worker");
console.log(self.origin)
self.addEventListener("install", event => {
console.log("install");
self.skipWaiting()
event.waitUntil(caches.delete("v1"))
})
self.addEventListener("activate", _event => {
console.log("activate");
self.clients.claim()
})
self.addEventListener("unload", () => {
console.log("unload")
})
const streams = new Map<string, { readable: ReadableStream, size: number }>()
self.addEventListener("message", ev => {
console.log(ev);
const { path, size } = ev.data, port = ev.ports[0]
const readable = port_to_readable(port)
streams.set(path, { readable, size })
})
function port_to_readable(port: MessagePort): ReadableStream {
return new ReadableStream({
start(controller) {
console.log("ReadableStream started");
port.onmessage = event => {
if (event.data === "end") controller.close()
else if (event.data === "abort") controller.error("aborted")
else controller.enqueue(event.data)
}
},
cancel() { console.log("ReadableStream cancelled"); port.postMessage({ abort: true }) },
})
}
self.addEventListener("fetch", event => {
const { request } = event;
if (!request.url.startsWith(self.origin)) return
const path = request.url.substring(self.origin.length)
console.log(request.method, path);
const stream = streams.get(path)
if (stream) {
streams.delete(path)
console.log(`-> stream response`);
return event.respondWith(
new Response(
stream.readable,
{
headers: new Headers({
"content-type": "application/octet-stream; charset=utf-8", // TODO transmit and set accordingly
"content-security-policy": "default-src 'none'",
"content-length": `${stream.size}`,
})
}
)
)
}
if (path == "/swtest") return event.respondWith(new Response("works!", { headers: new Headers({ "content-type": "text/plain" }) }))
event.respondWith(fetch(request))
})
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