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<!DOCTYPE html>
<!--
Copyright (c) 2016 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<html>
<head>
<meta charset=utf-8 />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Firebase Cloud Messaging Example</title>
<!-- Material Design Theming -->
<link rel="stylesheet" href="https://code.getmdl.io/1.1.3/material.orange-indigo.min.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
<script defer src="https://code.getmdl.io/1.1.3/material.min.js"></script>
<link rel="stylesheet" href="main.css">
<link rel="manifest" href="/manifest.json">
</head>
<body>
<div class="demo-layout mdl-layout mdl-js-layout mdl-layout--fixed-header">
<!-- Header section containing title -->
<header class="mdl-layout__header mdl-color-text--white mdl-color--light-blue-700">
<div class="mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-grid">
<div class="mdl-layout__header-row mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-cell--8-col-desktop">
<h3>Firebase Cloud Messaging</h3>
</div>
</div>
</header>
<main class="mdl-layout__content mdl-color--grey-100">
<div class="mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-grid">
<!-- Container for the Table of content -->
<div class="mdl-card mdl-shadow--2dp mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-cell--12-col-desktop">
<div class="mdl-card__supporting-text mdl-color-text--grey-600">
<!-- div to display the generated registration token -->
<div id="token_div">
<h4>Registration Token</h4>
<p id="token" style="word-break: break-all;"></p>
<button class="mdl-button mdl-js-button mdl-button--raised mdl-button--colored"
onclick="deleteToken()">Delete Token</button>
</div>
<!-- div to display the UI to allow the request for permission to
notify the user. This is shown if the app has not yet been
granted permission to notify. -->
<div id="permission_div">
<h4>Needs Permission</h4>
<p id="token"></p>
<button class="mdl-button mdl-js-button mdl-button--raised mdl-button--colored"
onclick="requestPermission()">Request Permission</button>
</div>
<!-- div to display messages received by this app. -->
<div id="messages"></div>
</div>
</div>
</div>
</main>
</div>
<!-- Import and configure the Firebase SDK -->
<!-- These scripts are made available when the app is served or deployed on Firebase Hosting -->
<!-- If you do not serve/host your project using Firebase Hosting see https://firebase.google.com/docs/web/setup -->
<script src="/__/firebase/9.14.0/firebase-app-compat.js"></script>
<script src="/__/firebase/9.14.0/firebase-messaging-compat.js"></script>
<script src="/__/firebase/init.js"></script>
<script>
// Retrieve Firebase Messaging object.
const messaging = firebase.messaging();
// IDs of divs that display registration token UI or request permission UI.
const tokenDivId = 'token_div';
const permissionDivId = 'permission_div';
// Handle incoming messages. Called when:
// - a message is received while the app has focus
// - the user clicks on an app notification created by a service worker
// `messaging.onBackgroundMessage` handler.
messaging.onMessage((payload) => {
console.log('Message received. ', payload);
// Update the UI to include the received message.
appendMessage(payload);
});
function resetUI() {
clearMessages();
showToken('loading...');
// Get registration token. Initially this makes a network call, once retrieved
// subsequent calls to getToken will return from cache.
messaging.getToken({vapidKey: 'AIzaSyBNX4fBbzA8o7HkR4lVw3GEI2bXdgKYE3U'}).then((currentToken) => {
if (currentToken) {
sendTokenToServer(currentToken);
updateUIForPushEnabled(currentToken);
} else {
// Show permission request.
console.log('No registration token available. Request permission to generate one.');
// Show permission UI.
updateUIForPushPermissionRequired();
setTokenSentToServer(false);
}
}).catch((err) => {
console.log('An error occurred while retrieving token. ', err);
showToken('Error retrieving registration token. ', err);
setTokenSentToServer(false);
});
}
function showToken(currentToken) {
// Show token in console and UI.
const tokenElement = document.querySelector('#token');
tokenElement.textContent = currentToken;
}
// Send the registration token your application server, so that it can:
// - send messages back to this app
// - subscribe/unsubscribe the token from topics
function sendTokenToServer(currentToken) {
if (!isTokenSentToServer()) {
console.log('Sending token to server...');
// TODO(developer): Send the current token to your server.
setTokenSentToServer(true);
} else {
console.log('Token already sent to server so won\'t send it again ' +
'unless it changes');
}
}
function isTokenSentToServer() {
return window.localStorage.getItem('sentToServer') === '1';
}
function setTokenSentToServer(sent) {
window.localStorage.setItem('sentToServer', sent ? '1' : '0');
}
function showHideDiv(divId, show) {
const div = document.querySelector('#' + divId);
if (show) {
div.style = 'display: visible';
} else {
div.style = 'display: none';
}
}
function requestPermission() {
console.log('Requesting permission...');
Notification.requestPermission().then((permission) => {
if (permission === 'granted') {
console.log('Notification permission granted.');
// TODO(developer): Retrieve a registration token for use with FCM.
// In many cases once an app has been granted notification permission,
// it should update its UI reflecting this.
resetUI();
} else {
console.log('Unable to get permission to notify.');
}
});
}
function deleteToken() {
// Delete registration token.
messaging.getToken().then((currentToken) => {
messaging.deleteToken(currentToken).then(() => {
console.log('Token deleted.');
setTokenSentToServer(false);
// Once token is deleted update UI.
resetUI();
}).catch((err) => {
console.log('Unable to delete token. ', err);
});
}).catch((err) => {
console.log('Error retrieving registration token. ', err);
showToken('Error retrieving registration token. ', err);
});
}
// Add a message to the messages element.
function appendMessage(payload) {
const messagesElement = document.querySelector('#messages');
const dataHeaderElement = document.createElement('h5');
const dataElement = document.createElement('pre');
dataElement.style = 'overflow-x:hidden;';
dataHeaderElement.textContent = 'Received message:';
dataElement.textContent = JSON.stringify(payload, null, 2);
messagesElement.appendChild(dataHeaderElement);
messagesElement.appendChild(dataElement);
}
// Clear the messages element of all children.
function clearMessages() {
const messagesElement = document.querySelector('#messages');
while (messagesElement.hasChildNodes()) {
messagesElement.removeChild(messagesElement.lastChild);
}
}
function updateUIForPushEnabled(currentToken) {
showHideDiv(tokenDivId, true);
showHideDiv(permissionDivId, false);
showToken(currentToken);
}
function updateUIForPushPermissionRequired() {
showHideDiv(tokenDivId, false);
showHideDiv(permissionDivId, true);
}
resetUI();
</script>
</body>
</html>