// Service Worker
// hier wird alles lokal gespeichert
// der "install" event wird beim ServiceWorker Startup aufgerufen

self.addEventListener('install', function(e) {
    console.log('install');

     // waitUntil tells the browser that the install event is not finished until we have
    // cached all of our files
    e.waitUntil(
    // Here we call our cache "myonsenuipwa", but you can name it anything unique
    caches.open('myonsenuipwa').then(cache => {
      // If the request for any of these resources fails, _none_ of the resources will be
      // added to the cache.
      return cache.addAll([
        '/',
        '/index.html',
        '/manifest.json',
        'https://unpkg.com/onsenui/css/onsenui.min.css',
        'https://unpkg.com/onsenui/css/onsen-css-components.min.css',
        'https://unpkg.com/onsenui/js/onsenui.min.js'
      ]);
    })
  );

});


// der fetch event wird abgefangen und stattdessen die lokale Datei geliefert

self.addEventListener('fetch', function(e) {
    console.log('fetch');
    e.respondWith(
        caches.match(e.request)
        .then(response => response || fetch(e.request))
    );
});