80 lines
2.9 KiB
JavaScript
80 lines
2.9 KiB
JavaScript
(function(root, factory) {
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if (typeof module === 'object' && module.exports) module.exports = factory;
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else root.createPushNotifications = factory;
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})(typeof self !== 'undefined' ? self : this, function createPushNotifications({
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control, status, notification, serviceWorker, fetchJson,
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}) {
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let configuration = null;
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function applicationServerKey(value) {
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const padded = value.replace(/-/g, '+').replace(/_/g, '/') + '='.repeat((4 - value.length % 4) % 4);
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if (typeof atob === 'function') {
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return Uint8Array.from(atob(padded), character => character.charCodeAt(0));
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}
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return Uint8Array.from(Buffer.from(padded, 'base64'));
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}
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async function disable() {
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const registration = await serviceWorker.ready;
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const subscription = await registration.pushManager.getSubscription();
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await fetchJson('api/v1/push-subscription', {method:'DELETE'});
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await subscription?.unsubscribe?.();
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control.checked = false;
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status.textContent = 'New update notifications are off for this device.';
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}
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async function enable() {
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const permission = await notification.requestPermission();
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if (permission !== 'granted') {
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control.checked = false;
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status.textContent = 'Notifications are blocked. Allow them in your browser settings to enable updates.';
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return;
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}
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const registration = await serviceWorker.ready;
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let subscription = await registration.pushManager.getSubscription();
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if (!subscription) {
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subscription = await registration.pushManager.subscribe({
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userVisibleOnly: true,
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applicationServerKey: applicationServerKey(configuration.public_key),
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});
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}
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await fetchJson('api/v1/push-subscription', {
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method:'PUT',
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headers:{'Content-Type':'application/json'},
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body:JSON.stringify(subscription.toJSON()),
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});
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control.checked = true;
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status.textContent = 'New update notifications enabled for this device.';
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}
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async function change() {
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control.disabled = true;
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try {
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if (control.checked) await enable();
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else await disable();
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} catch (error) {
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control.checked = !control.checked;
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status.textContent = 'Could not change update notifications. Check your connection and try again.';
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} finally {
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control.disabled = false;
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}
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}
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async function init() {
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if (!control || !notification || !serviceWorker) return;
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control.addEventListener('change', change);
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configuration = await fetchJson('api/v1/push-subscription');
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if (!configuration.available) {
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control.disabled = true;
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status.textContent = 'New update notifications are not available on this server.';
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return;
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}
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control.checked = Boolean(configuration.subscribed);
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status.textContent = configuration.subscribed
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? 'New update notifications enabled for this device.'
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: 'New update notifications are off for this device.';
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}
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return {init, change};
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});
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