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1922d4bf78
Only restricting cache per age wasn't enough for instances with lots of multimedia usage and high number of posts. MaxEntries is also more effective on cleanup, and purgeOnQuotaError advertise that Discourse cache can be purged if necessary. https://developers.google.com/web/tools/workbox/guides/storage-quota
103 lines
3.0 KiB
Plaintext
103 lines
3.0 KiB
Plaintext
'use strict';
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importScripts("<%= ::UrlHelper.absolute("/javascripts/workbox/workbox-sw.js") %>");
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workbox.setConfig({
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modulePathPrefix: "<%= ::UrlHelper.absolute("/javascripts/workbox") %>",
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debug: false
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});
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const cacheVersion = "1";
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// Cache all GET requests, so Discourse can be used while offline
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workbox.routing.registerRoute(
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new RegExp('.*?'), // Matches all, GET is implicit
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new workbox.strategies.NetworkFirst({ // This will only use the cache when a network request fails
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cacheName: "discourse-" + cacheVersion,
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plugins: [
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new workbox.expiration.Plugin({
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maxAgeSeconds: 7* 24 * 60 * 60, // 7 days
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maxEntries: 500,
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purgeOnQuotaError: true, // safe to automatically delete if exceeding the available storage
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}),
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],
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})
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);
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const idleThresholdTime = 1000 * 10; // 10 seconds
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var lastAction = -1;
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function isIdle() {
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return lastAction + idleThresholdTime < Date.now();
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}
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function showNotification(title, body, icon, badge, tag, baseUrl, url) {
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var notificationOptions = {
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body: body,
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icon: icon,
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badge: badge,
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data: { url: url, baseUrl: baseUrl },
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tag: tag
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}
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return self.registration.showNotification(title, notificationOptions);
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}
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self.addEventListener('push', function(event) {
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var payload = event.data.json();
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if(!isIdle() && payload.hide_when_active) {
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return false;
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}
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event.waitUntil(
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self.registration.getNotifications({ tag: payload.tag }).then(function(notifications) {
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if (notifications && notifications.length > 0) {
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notifications.forEach(function(notification) {
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notification.close();
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});
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}
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return showNotification(payload.title, payload.body, payload.icon, payload.badge, payload.tag, payload.base_url, payload.url);
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})
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);
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});
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self.addEventListener('notificationclick', function(event) {
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// Android doesn't close the notification when you click on it
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// See: http://crbug.com/463146
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event.notification.close();
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var url = event.notification.data.url;
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var baseUrl = event.notification.data.baseUrl;
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// This looks to see if the current window is already open and
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// focuses if it is
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event.waitUntil(
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clients.matchAll({ type: "window" })
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.then(function(clientList) {
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var reusedClientWindow = clientList.some(function(client) {
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if (client.url === baseUrl + url && 'focus' in client) {
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client.focus();
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return true;
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}
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if ('postMessage' in client && 'focus' in client) {
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client.focus();
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client.postMessage({ url: url });
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return true;
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}
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return false;
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});
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if (!reusedClientWindow && clients.openWindow) return clients.openWindow(baseUrl + url);
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})
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);
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});
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self.addEventListener('message', function(event) {
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if('lastAction' in event.data){
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lastAction = event.data.lastAction;
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}});
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<% DiscoursePluginRegistry.service_workers.each do |js| %>
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<%=raw "#{File.read(js)}" %>
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<% end %>
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