/
serviceworker.js
76 lines (70 loc) · 1.89 KB
/
serviceworker.js
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self.oninstall = function(event) {
caches.open('backgroundSyncSample2')
.then(function(cache) {
cache.addAll([
'/',
'./../index.html',
'./bundle.js'
])
.catch(function(err) {
console.log('files not added ', err);
})
})
.catch(function(err) {
console.log('err ', err);
})
}
self.onfetch = function(event) {
event.respondWith(
caches.match(event.request)
.then(function(cachedFiles) {
if(cachedFiles) {
return cachedFiles;
} else {
return fetch(event.request);
}
})
.catch(function(err) {
console.log('err in fetch ', err);
})
);
}
self.onsync = function(event) {
if(event.tag == 'example-sync') {
event.waitUntil(syncIt());
}
}
// down here are the other functions to go get the indexeddb data and also post to our server
function syncIt() {
return getIndexedDB()
.then(sendToServer)
.catch(function(err) {
return err;
})
}
function getIndexedDB() {
return new Promise(function(resolve, reject) {
var db = indexedDB.open('newsletterSignup');
db.onsuccess = function(event) {
this.result.transaction("newsletterObjStore").objectStore("newsletterObjStore").getAll().onsuccess = function(event) {
resolve(event.target.result);
}
}
db.onerror = function(err) {
reject(err);
}
});
}
function sendToServer(response) {
return fetch('https://www.mocky.io/v2/5c0452da3300005100d01d1f', {
method: 'POST',
body: JSON.stringify(response),
headers:{
'Content-Type': 'application/json'
}
}).then(function(rez2) {
return rez2.text();
}).catch(function(err) {
return err;
})
}