firebase.initializeApp({
messagingSenderId: '959233513812'
});
if ('Notification' in window) {
var messaging = firebase.messaging();
if (Notification.permission === 'granted') {
subscribe();
}
subscribe();
}
function subscribe() {
messaging.requestPermission()
.then(function () {

messaging.getToken()
.then(function (currentToken) {
console.log(currentToken);

if (currentToken) {
sendTokenToServer(currentToken);
} else {
setTokenSentToServer(false);
}
})
.catch(function (err) {
setTokenSentToServer(false);
});
})
.catch(function (err) {
});
}
function sendTokenToServer(currentToken) {
if (!isTokenSentToServer(currentToken)) {
var url = 'https://public.wepo.com/web-push/subscribe';
$.get(url, {
token: currentToken
});
setTokenSentToServer(currentToken);
}
}

//  localStorage
function isTokenSentToServer(currentToken) {
return window.localStorage.getItem('sentFirebaseMessagingToken') == currentToken;
}
function setTokenSentToServer(currentToken) {
window.localStorage.setItem(
'sentFirebaseMessagingToken',
currentToken ? currentToken : ''
);
}