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@luisdalmolin luisdalmolin/worker.js
Last active Aug 30, 2016

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What would you like to do?
Service Worker to make the site offline
var version = 'v1::';
// -------------------------------------------------------
// aqui devem ser baixados os recursos offline, que devem vir de uma lista em algum local
// provavelmente alguma API no site
this.addEventListener('install', function(event) {
console.log('Service Worker instalado!');
// return self.clients.skipWaiting();
});
this.addEventListener('activate', function(event) {
console.log('Service worker ativado!');
return self.clients.claim();
});
this.addEventListener('fetch', function(event) {
event.respondWith(
caches.match(event.request).then(function(response) {
return response || fetch(event.request);
}).catch(function(error) {
console.log(event.request.url, error);
})
);
});
this.addEventListener('message', function(event) {
// -------------------------------------------------------
// this is a function called when the 'refresh offline site' its called
if (event.data.action === 'update') {
caches.keys().then(function(keys) {
return Promise.all(keys.map(function(key) {
return caches.delete(keys[key]);
}));
});
// this endpoint returns all URLs and imagens that must me cached
fetch('/ajax/offline', {mode: 'no-cors', cache: 'no-cache'}).then(function(response) {
return response.json();
}).then(function(resources) {
return caches.open(version).then(function(cache) {
return cache.addAll(resources);
});
}).then(function() {
event.ports[0].postMessage({completed: true});
console.log('cache atualzado!');
});
}
// -------------------------------------------------------
// clearing the cache
if (event.data.action === 'clear') {
caches.keys().then(function(keys) {
return Promise.all(keys.map(function(key) {
return caches.delete(keys[key]);
}));
}).then(function() {
event.ports[0].postMessage({completed: true});
console.log('cache limpo!');
});
}
});
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