const staticCacheName = 'wieslab-v12';


const filesToCache = [
  '/hubfs/wieslab-app/svar-wieslab-logo.svg',
  '/hubfs/wieslab-app/vial-140.svg',
  '/hubfs/wieslab-app/vial-bl.svg',
  '/hubfs/wieslab-app/language.svg',
  '/hubfs/wieslab-app/home-140.svg',
  '/hubfs/wieslab-app/home-bl.svg',
  '/hubfs/wieslab-app/thermo-140.svg',
  '/hubfs/wieslab-app/thermo-bl.svg',
  '/hubfs/wieslab-app/info-140.svg',
  '/hubfs/wieslab-app/info-bl.svg',
  '/hubfs/wieslab-app/contact-140.svg',
  '/hubfs/wieslab-app/contact-bl.svg',
  '/hubfs/wieslab-app/arrow.svg',
  '/hubfs/wieslab-app/arrow-white.svg',
  'https://www.wieslab.se',
  '/hubfs/wieslab-app/tiny-slider-2.9.4/tiny-slider.js',
  '/hubfs/wieslab-app/tiny-slider-2.9.4/tiny-slider.css',
  '/hubfs/wieslab-app/pdf-js-2.14.305/build/pdf.js',
  '/hubfs/wieslab-app/pdf-js-2.14.305/build/pdf.worker.js'
];

self.addEventListener('message', event => {
  if (event.data.action === 'skipWaiting') {
    self.skipWaiting();
  }
});

self.addEventListener('install', event => {
  console.log('Attempting to install service worker and cache static assets');
  //self.skipWaiting();
  event.waitUntil(
    caches.open(staticCacheName)
    .then(cache => {
      return cache.addAll(filesToCache);
    })
  );
});

this.addEventListener('activate', function(event) {

  event.waitUntil(
    caches.keys().then(function(keyList) {
      return Promise.all(keyList.map(function(key) {
        if (staticCacheName.indexOf(key) === -1) {
          return caches.delete(key);
        }
      }));
    })
  );
});

self.addEventListener('fetch', (event) => {
  const url = new URL(event.request.url);  
  if (url.origin == location.origin && (event.request.url.indexOf('wieslab-app') > -1 || event.request.url.indexOf('Diagnostic') > -1 || url == 'https://www.wieslab.se' || url == 'https://www.wieslab.se/')) {  
    event.respondWith(caches.open(staticCacheName).then((cache) => {
      return cache.match(event.request).then((cachedResponse) => {
        const fetchedResponse = fetch(event.request).then((networkResponse) => {
          console.log("adding to cache: "+event.request.url);
          cache.put(event.request, networkResponse.clone());
          return networkResponse;
        });

        return cachedResponse || fetchedResponse;
      });
    }));
  }
  else {
    return;
  }  
});