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google-credentials.html
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google-credentials.html
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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">
<!--
Note that Google Sign In does not work from a file URL. You will need to make
this page available from a web server, either from localhost or using Firebase
Hosting.
Whichever domain it is running on, you'll have to add the origin for that domain
in the Google Developer Console: https://console.developers.google.com, search
for Credentials and create a new credential > OAuth client ID > web application,
and set the domain as an authorised origin (e.g. http://localhost:8000 or https://foo.bar).
-->
<!-- [START google_config] -->
<!-- **********************************************
* TODO(DEVELOPER): Use your Client ID below. *
********************************************** -->
<meta name="google-signin-client_id" content="YOUR_CLIENT_ID">
<meta name="google-signin-cookiepolicy" content="single_host_origin">
<meta name="google-signin-scope" content="profile email">
<!-- [END google_config] -->
<title>Google Sign In 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">
<!-- Google Sign In -->
<script src="https://apis.google.com/js/platform.js" async defer></script>
<!-- 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/9.22.1/firebase-app-compat.js"></script>
<script src="/__/firebase/9.22.1/firebase-auth-compat.js"></script>
<script src="/__/firebase/init.js"></script>
<script type="text/javascript">
function onSignIn(googleUser) {
console.log('Google Auth Response', googleUser);
// We need to register an Observer on Firebase Auth to make sure auth is initialized.
var unsubscribe = firebase.auth().onAuthStateChanged(function(firebaseUser) {
unsubscribe();
// Check if we are already signed-in Firebase with the correct user.
if (!isUserEqual(googleUser, firebaseUser)) {
// Build Firebase credential with the Google ID token.
var credential = firebase.auth.GoogleAuthProvider.credential(
googleUser.getAuthResponse().id_token);
// Sign in with credential from the Google user.
firebase.auth().signInWithCredential(credential).catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// The email of the user's account used.
var email = error.email;
// The firebase.auth.AuthCredential type that was used.
var credential = error.credential;
if (errorCode === 'auth/account-exists-with-different-credential') {
alert('You have already signed up with a different auth provider for that email.');
// If you are using multiple auth providers on your app you should handle linking
// the user's accounts here.
} else {
console.error(error);
}
});
} else {
console.log('User already signed-in Firebase.');
}
});
}
/**
* Check that the given Google user is equals to the given Firebase user.
*/
function isUserEqual(googleUser, firebaseUser) {
if (firebaseUser) {
var providerData = firebaseUser.providerData;
for (var i = 0; i < providerData.length; i++) {
if (providerData[i].providerId === firebase.auth.GoogleAuthProvider.PROVIDER_ID &&
providerData[i].uid === googleUser.getBasicProfile().getId()) {
// We don't need to reauth the Firebase connection.
return true;
}
}
}
return false;
}
/**
* Handle the sign out button press.
*/
function handleSignOut() {
var googleAuth = gapi.auth2.getAuthInstance();
googleAuth.signOut().then(function() {
firebase.auth().signOut();
});
}
/**
* initApp handles setting up UI event listeners and registering Firebase auth listeners:
* - firebase.auth().onAuthStateChanged: This listener is called when the user is signed in or
* out, and that is where we update the UI.
*/
function initApp() {
// Auth state changes.
firebase.auth().onAuthStateChanged(function(user){
if (user) {
// User is signed in.
var displayName = user.displayName;
var email = user.email;
var emailVerified = user.emailVerified;
var photoURL = user.photoURL;
var isAnonymous = user.isAnonymous;
var uid = user.uid;
var providerData = user.providerData;
document.getElementById('quickstart-sign-in-status').textContent = 'Signed in';
document.getElementById('signout').disabled = false;
document.getElementById('quickstart-account-details').textContent = JSON.stringify(user, null, ' ');
} else {
// User is signed out.
document.getElementById('quickstart-sign-in-status').textContent = 'Signed out';
document.getElementById('signout').disabled = true;
document.getElementById('quickstart-account-details').textContent = 'null';
}
});
document.getElementById('signout').addEventListener('click', handleSignOut, false);
}
window.onload = function() {
initApp();
};
</script>
</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">
<a href="/"><h3>Firebase Authentication</h3></a>
</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 demo -->
<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__title mdl-color--light-blue-600 mdl-color-text--white">
<h2 class="mdl-card__title-text">Google Authentication with OAuth Credentials</h2>
</div>
<div class="mdl-card__supporting-text mdl-color-text--grey-600">
<p>Sign in with your Google account below.</p>
<!-- [START google_button] -->
<div class="g-signin2" data-onsuccess="onSignIn" data-theme="dark"></div>
<!-- [END google_button] -->
<br>
<button disabled class="mdl-button mdl-js-button mdl-button--raised" id="signout" name="signout">Sign Out</button>
<div class="quickstart-user-details-container">
Firebase sign-in status: <span id="quickstart-sign-in-status">Unknown</span>
<div>Firebase auth <code>currentUser</code> object value:</div>
<pre><code id="quickstart-account-details">null</code></pre>
</div>
</div>
</div>
</div>
</main>
</div>
</body>
</html>