102 lines
3.9 KiB
JavaScript
102 lines
3.9 KiB
JavaScript
/**
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* PWA service worker
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*
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* @author Christian Mollekopf <mollekopf@kolabsys.com>
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*
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* @licstart The following is the entire license notice for the
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* JavaScript code in this file.
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*
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* Copyright (C) 2019, Kolab Systems AG <contact@kolabsys.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @licend The above is the entire license notice
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* for the JavaScript code in this file.
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*/
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// Warning: cacheName and assetsToCache vars are set by the PWA plugin
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// when sending this file content to the browser
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self.addEventListener('sync', function(event) {
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if (event.registration.tag == "oneTimeSync") {
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console.dir(self.registration);
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console.log("One Time Sync Fired");
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}
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});
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self.addEventListener('install', function(event) {
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// waitUntil() ensures that the Service Worker will not
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// install until the code inside has successfully occurred
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event.waitUntil(
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// Create cache with the name supplied above and
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// return a promise for it
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caches.open(cacheName).then(function(cache) {
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// Important to `return` the promise here to have `skipWaiting()`
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// fire after the cache has been updated.
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return cache.addAll(assetsToCache);
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}).then(function() {
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// `skipWaiting()` forces the waiting ServiceWorker to become the
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// active ServiceWorker, triggering the `onactivate` event.
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// Together with `Clients.claim()` this allows a worker to take effect
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// immediately in the client(s).
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return self.skipWaiting();
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})
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);
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});
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// Activate event
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// Be sure to call self.clients.claim()
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self.addEventListener('activate', function(event) {
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// `claim()` sets this worker as the active worker for all clients that
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// match the workers scope and triggers an `oncontrollerchange` event for
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// the clients.
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return self.clients.claim();
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});
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self.addEventListener('fetch', function(event) {
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// Ignore non-get request like when accessing the admin panel
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// if (event.request.method !== 'GET') { return; }
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// Don't try to handle non-secure assets because fetch will fail
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if (/http:/.test(event.request.url)) {
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return;
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}
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// Here's where we cache all the things!
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event.respondWith(
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// Open the cache created when install
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caches.open(cacheName).then(function(cache) {
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// Go to the network to ask for that resource
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return fetch(event.request).then(function(networkResponse) {
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// Add a copy of the response to the cache (updating the old version)
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cache.put(event.request, networkResponse.clone());
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// Respond with it
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return networkResponse;
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}).catch(function() {
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// If there is no internet connection, try to match the request
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// to some of our cached resources
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return cache.match(event.request);
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})
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})
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);
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});
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self.addEventListener('beforeinstallprompt', function(e) {
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e.userChoice.then(function(choiceResult) {
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if (choiceResult.outcome == 'dismissed') {
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alert('User cancelled home screen install');
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} else {
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alert('User added to home screen');
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}
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});
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});
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