133 lines
5.1 KiB
JavaScript
133 lines
5.1 KiB
JavaScript
'use strict';
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var notification_data = JSON.parse(document.getElementById('notification_data').textContent);
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/** Boolean meaning 'some tab have stream' */
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const STORAGE_KEY_STREAM = 'stream';
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/** Number of notifications. May be increased or reset */
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const STORAGE_KEY_NOTIF_COUNT = 'notification_count';
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var notifications, delivered;
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var notifications_mock = { close: function () { } };
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function get_subscriptions() {
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helpers.xhr('GET', '/api/v1/auth/subscriptions?fields=authorId', {
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retries: 5,
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entity_name: 'subscriptions'
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}, {
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on200: create_notification_stream
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});
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}
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function create_notification_stream(subscriptions) {
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// sse.js can't be replaced to EventSource in place as it lack support of payload and headers
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// see https://developer.mozilla.org/en-US/docs/Web/API/EventSource/EventSource
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notifications = new SSE(
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'/api/v1/auth/notifications?fields=videoId,title,author,authorId,publishedText,published,authorThumbnails,liveNow', {
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withCredentials: true,
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payload: 'topics=' + subscriptions.map(function (subscription) { return subscription.authorId; }).join(','),
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
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});
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delivered = [];
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var start_time = Math.round(new Date() / 1000);
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notifications.onmessage = function (event) {
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if (!event.id) return;
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var notification = JSON.parse(event.data);
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console.info('Got notification:', notification);
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// Ignore not actual and delivered notifications
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if (start_time > notification.published || delivered.includes(notification.videoId)) return;
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delivered.push(notification.videoId);
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let notification_count = helpers.storage.get(STORAGE_KEY_NOTIF_COUNT) || 0;
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notification_count++;
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helpers.storage.set(STORAGE_KEY_NOTIF_COUNT, notification_count);
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update_ticker_count();
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// TODO: ask permission to show notifications via Notification.requestPermission
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// https://developer.mozilla.org/en-US/docs/Web/API/notification
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if (window.Notification && Notification.permission === 'granted') {
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var notification_text = notification.liveNow ? notification_data.live_now_text : notification_data.upload_text;
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notification_text = notification_text.replace('`x`', notification.author);
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var system_notification = new Notification(notification_text, {
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body: notification.title,
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icon: '/ggpht' + new URL(notification.authorThumbnails[2].url).pathname,
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img: '/ggpht' + new URL(notification.authorThumbnails[4].url).pathname
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});
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system_notification.onclick = function (e) {
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open('/watch?v=' + notification.videoId, '_blank');
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};
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}
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};
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notifications.addEventListener('error', function (e) {
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console.warn('Something went wrong with notifications, trying to reconnect...');
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notifications = notifications_mock;
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setTimeout(get_subscriptions, 1000);
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});
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notifications.stream();
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}
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function update_ticker_count() {
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var notification_ticker = document.getElementById('notification_ticker');
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const notification_count = helpers.storage.get(STORAGE_KEY_STREAM);
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if (notification_count > 0) {
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notification_ticker.innerHTML =
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'<span id="notification_count">' + notification_count + '</span> <i class="icon ion-ios-notifications"></i>';
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} else {
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notification_ticker.innerHTML =
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'<i class="icon ion-ios-notifications-outline"></i>';
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}
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}
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function start_stream_if_needed() {
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// random wait for other tabs set 'stream' flag
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setTimeout(function () {
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if (!helpers.storage.get(STORAGE_KEY_STREAM)) {
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// if no one set 'stream', set it by yourself and start stream
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helpers.storage.set(STORAGE_KEY_STREAM, true);
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notifications = notifications_mock;
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get_subscriptions();
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}
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}, Math.random() * 1000 + 50); // [0.050 .. 1.050) second
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}
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addEventListener('storage', function (e) {
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if (e.key === STORAGE_KEY_NOTIF_COUNT)
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update_ticker_count();
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// if 'stream' key was removed
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if (e.key === STORAGE_KEY_STREAM && !helpers.storage.get(STORAGE_KEY_STREAM)) {
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if (notifications) {
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// restore it if we have active stream
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helpers.storage.set(STORAGE_KEY_STREAM, true);
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} else {
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start_stream_if_needed();
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}
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}
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});
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addEventListener('load', function () {
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var notification_count_el = document.getElementById('notification_count');
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var notification_count = notification_count_el ? parseInt(notification_count_el.textContent) : 0;
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helpers.storage.set(STORAGE_KEY_NOTIF_COUNT, notification_count);
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if (helpers.storage.get(STORAGE_KEY_STREAM))
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helpers.storage.remove(STORAGE_KEY_STREAM);
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start_stream_if_needed();
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});
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addEventListener('unload', function () {
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// let chance to other tabs to be a streamer via firing 'storage' event
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if (notifications) helpers.storage.remove(STORAGE_KEY_STREAM);
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});
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