www/service-worker.js

   1 let cache = null;
   2
   3 self.addEventListener('fetch', function(event) {
   4         if(event.request.url.match(/^\/([a-z]*\.(js|css)|css\/|assets\/)/)) {
   5                 let responder = cache => {
   6                         return cache.match(event.request).then(match => {
   7                                 if(match) {
   8                                         return match;
   9                                 } else {
  10                                         return cache.match(event.request, {ignoreSearch: true}).then(match => {
  11                                                 if(match) cache.delete(match);
  12
  13                                                 return fetch(event.request).then(response => {
  14                                                         cache.put(event.request, response.clone());
  15                                                         return response;
  16                                                 });
  17                                         });
  18                                 }
  19                         });
  20                 };
  21
  22                 if(cache) {
  23                         event.respondWith(responder(cache));
  24                 } else {
  25                         event.respondWith(
  26                                 caches.open("v1").then(openedCache => {
  27                                         cache = openedCache;
  28                                         return responder(cache);
  29                                 })
  30                         );
  31                 }
  32         }
  33 })
  34
  35 let lastNotification = null;
  36
  37 self.addEventListener('push', function(event) {
  38         event.waitUntil(
  39                 fetch("/check-notifications?format=push")
  40                         .then(res => res.json())
  41                         .then(notifications => {
  42                                 if(!notifications) return;
  43                                 for(var i=0; i < notifications.length; i++) {
  44                                         if(lastNotification === notifications[i]._id) {
  45                                                 lastNotification = notifications[i]._id;
  46                                                 return;
  47                                         }
  48                                         self.registration.showNotification(notifications[i].message);
  49                                 }
  50                         })
  51         );
  52 });
  53
  54 self.addEventListener('notificationclick', function(event) {
  55         event.waitUntil(clients.openWindow("/push/go-inbox"));
  56 });
  57
  58 self.addEventListener('install', (event) => {
  59         event.waitUntil(
  60                 caches.open("v1").then(openedCache => { cache = openedCache; }).then(self.skipWaiting())
  61         );
  62 });
  63
  64 self.addEventListener('activate', (event) => {
  65         event.waitUntil(clients.claim());
  66 });