calckey/packages/client/src/scripts/initialize-sw.ts

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2021-11-11 17:02:25 +00:00
import { instance } from '@/instance';
import { $i } from '@/account';
import { api } from '@/os';
import { lang } from '@/config';
export async function initializeSw() {
if (instance.swPublickey &&
('serviceWorker' in navigator) &&
('PushManager' in window) &&
$i && $i.token) {
navigator.serviceWorker.register(`/sw.js`);
navigator.serviceWorker.ready.then(registration => {
registration.active?.postMessage({
msg: 'initialize',
lang,
});
// SEE: https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe#Parameters
registration.pushManager.subscribe({
userVisibleOnly: true,
applicationServerKey: urlBase64ToUint8Array(instance.swPublickey)
}).then(subscription => {
function encode(buffer: ArrayBuffer | null) {
return btoa(String.fromCharCode.apply(null, new Uint8Array(buffer)));
}
// Register
api('sw/register', {
endpoint: subscription.endpoint,
auth: encode(subscription.getKey('auth')),
publickey: encode(subscription.getKey('p256dh'))
});
})
// When subscribe failed
.catch(async (err: Error) => {
// 通知が許可されていなかったとき
if (err.name === 'NotAllowedError') {
return;
}
// 違うapplicationServerKey (または gcm_sender_id)のサブスクリプションが
// 既に存在していることが原因でエラーになった可能性があるので、
// そのサブスクリプションを解除しておく
const subscription = await registration.pushManager.getSubscription();
if (subscription) subscription.unsubscribe();
});
});
}
}
/**
* Convert the URL safe base64 string to a Uint8Array
* @param base64String base64 string
*/
function urlBase64ToUint8Array(base64String: string): Uint8Array {
const padding = '='.repeat((4 - base64String.length % 4) % 4);
const base64 = (base64String + padding)
.replace(/-/g, '+')
.replace(/_/g, '/');
const rawData = window.atob(base64);
const outputArray = new Uint8Array(rawData.length);
for (let i = 0; i < rawData.length; ++i) {
outputArray[i] = rawData.charCodeAt(i);
}
return outputArray;
}