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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 lib="dom" />
import { log } from "../logger.ts"
import { SWMessage } from "./protocol.ts"
export let SW_ENABLED = false
export async function init_serviceworker() {
let reg = await globalThis.navigator.serviceWorker.getRegistration()
if (reg) {
log("sw", "service worker already installed")
SW_ENABLED = true
} else {
log("sw", "registering service worker")
await globalThis.navigator.serviceWorker.register("/sw.js", { scope: "/", type: "module" })
log("sw", "worker installed")
reg = await globalThis.navigator.serviceWorker.getRegistration();
if (!reg) throw new Error("we just registered the sw!?");
SW_ENABLED = !!reg
}
start_handler()
log("sw", "checking for updates")
send_sw_message({ check_version: true })
}
export async function send_sw_message(message: SWMessage, transfer?: Transferable[]) {
const reg = await globalThis.navigator.serviceWorker.getRegistration();
if (!reg) throw new Error("no sw");
if (!reg.active) throw new Error("no sw");
if (transfer) reg.active.postMessage(message, transfer)
else reg.active.postMessage(message, transfer)
}
export async function update_serviceworker() {
const regs = await globalThis.navigator.serviceWorker.getRegistrations()
for (const r of regs) await r.unregister()
log("sw", "cleared all workers")
setTimeout(() => window.location.reload(), 500)
}
function start_handler() {
globalThis.navigator.serviceWorker.addEventListener("message", event => {
const message: SWMessage = event.data;
if (message.version_info) {
log("sw", JSON.stringify(message.version_info))
}
if (message.updated) {
log("*", "updated")
}
})
}
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