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var VERSION = 'v51 - 2019-12-26';
var toCache = [
'/',
'activePage.js',
'activePage.js.map',
'config.js',
'config.js.map',
'favicon.ico',
'hesla.js',
'hesla.js.map',
'hesla.webapp',
'icon-128.png',
'icon-30.png',
'icon-60.png',
'index_de.html',
'index.html',
'require.js',
'screen.css'
];
self.addEventListener('install', event => {
console.log('install version = ' + VERSION);
event.waitUntil(
caches.open(VERSION)
.then(
c => c.addAll(toCache)
.then(v => console.log('Yay!' + VERSION), e => console.log('Error'))
)
);
});
self.addEventListener('activate', event => {
console.log('activate version = ' + VERSION);
console.log('keys:\n' + caches.keys());
event.waitUntil(caches.keys().then(
keys => Promise.all(
keys.filter(key => key != VERSION).
map(key => caches.delete(key))
)
)
);
});
self.addEventListener('fetch', function(event) {
event.respondWith(caches.match(event.request).then(function(response) {
// caches.match() always resolves
// but in case of success response will have value
if (response !== undefined) {
return response;
} else {
return fetch(event.request).then(function (response) {
// response may be used only once
// we need to save clone to put one copy in cache
// and serve second one
let responseClone = response.clone();
caches.open(VERSION).then(function (cache) {
cache.put(event.request, responseClone);
});
return response;
}).catch(function () {
return caches.match('/sw-test/gallery/myLittleVader.jpg');
});
}
}));
});
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