Pony.fm/public/service-worker.js

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JavaScript
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// Pony.fm - A community for pony fan music.
// Copyright (C) 2016 Josef Citrine
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
var urlsToCache = [
'/offline.html',
'/styles/offline.css',
'/images/ponyfm-logo-white.svg'
];
var CACHE_NAME = 'pfm-offline-v1';
var notifUrlCache = {};
function getChromeVersion () {
var raw = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
return raw ? parseInt(raw[2], 10) : false;
}
// Set the callback for the install step
self.addEventListener('install', function(event) {
// Perform install steps
event.waitUntil(
caches.open(CACHE_NAME)
.then(function(cache) {
cache.addAll(urlsToCache);
})
);
});
// Delete old caches
self.addEventListener('activate', function (event) {
event.waitUntil(caches.keys().then(function (cacheNames) {
return Promise.all(cacheNames.map(function (cacheName) {
if (cacheName != CACHE_NAME) {
return caches.delete(cacheName);
}
}));
}));
});
// Basic offline mode
// Just respond with an offline error page for now
self.addEventListener('fetch', function(event) {
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if (event.request.url.indexOf('stage.pony.fm') > -1 || event.request.url.indexOf('upload' || event.request.url.indexOf('mp3') > -1) > -1) {
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// Ignore some requests
return;
} else {
event.respondWith(
caches.match(event.request).then(function (response) {
return response || fetch(event.request);
}).catch(function () {
if (event.request.mode == 'navigate') {
return caches.match('/offline.html');
}
})
)
}
});
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self.addEventListener('push', function(event) {
console.log(event);
var data = {};
if (event.data) {
console.log(event.data.json());
data = JSON.parse(event.data.text());
}
notifUrlCache['pfm-' + data.id] = data.url;
self.registration.showNotification(data.title, {
body: data.text,
icon: data.image,
tag: 'pfm-' + data.id
})
});
self.addEventListener('notificationclick', function(event) {
event.notification.close();
event.waitUntil(
clients.matchAll({
type: "window"
})
.then(function(clientList) {
var url = notifUrlCache[event.notification.tag];
for (var i = 0; i < clientList.length; i++) {
var client = clientList[i];
if (client.url == url && 'focus' in client)
return client.focus();
}
if (clients.openWindow) {
return clients.openWindow(url);
}
})
);
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});