CaritasPWA/wwwroot/service-worker.js

// In development, always fetch from the network and do not enable offline support.
// This is because caching would make development more difficult (changes would not
// be reflected on the first load after each change).

const staticCacheName = 'site-static-v1';
const assets = [
    '/',
    '/index.html',
    '/account',
    '/account/Found',
    '/account/Missing',
    '/info',
    '/caritas_services',
    '/lost_found',
    '/keydata',
    '/keydata/Found',
    '/keydata/Missing',
    '/conclusion_found',
    '/conclusion_missing',
    '/doneimage',
    'css/app.css',
    '_content/BlazorColorPicker/colorpicker.css',
    '_content/MatBlazor/dist/matBlazor.css',
    'css/united/bootstrap.min.css',
    'css/united/_bootswatch.min.css',
    'css/united/_variables.min.css',
    '_content/BlazorAnimate/blazorAnimateInterop.js',
    '_content/MatBlazor/dist/matBlazor.js',
    '_content/BlazorColorPicker/colorpicker.js',
    'images/batch_found.png',
    'images/batch_fundvelo.png',
    'images/batch_kulturlegi.png',
    'images/batch_markt.png',
    'images/batch_missing.png',
    'images/caritas_logo.png',
    'images/integrate_logo.png',
    'images/done.png',
    'images/icon_camera.png',
    'images/icon_driveupload.png',
    'images/icon_location.png'
];


// install event
self.addEventListener('install', evt => {
    evt.waitUntil(
        caches.open(staticCacheName).then(cache => {
            console.log('caching app assets');
            cache.addAll(assets);
        })
    );
});

// activate event
self.addEventListener('activate', evt => {
    //console.log("Service-Worker has been activated.");
    evt.waitUntil(
        caches.keys().then(keys => {
            return Promise.all(keys
                .filter(key => key !== staticCacheName)
                .map(key => caches.delete())
            )
        })
    );
});


self.addEventListener('fetch', evt => {
    evt.respondWith(
        caches.match(evt.request).then(cacheRes => {
            return cacheRes || fetch(evt.request);
        })
    );
});