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email-link.html
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email-link.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">
<title>Email Link Authentication 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">
<!-- 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/7.14.0/firebase-app.js"></script>
<script src="/__/firebase/7.14.0/firebase-auth.js"></script>
<script src="/__/firebase/init.js"></script>
<script type="text/javascript">
/**
* Handles the sign in button press.
*/
function toggleSignIn() {
// Disable the sign-in button during async sign-in tasks.
document.getElementById('quickstart-sign-in').disabled = true;
if (firebase.auth().currentUser) {
// [START signout]
firebase.auth().signOut().catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// [START_EXCLUDE]
handleError(error);
// [END_EXCLUDE]
});
// [END signout]
} else {
var email = document.getElementById('email').value;
// Sending email with sign-in link.
// [START authwithemail]
var actionCodeSettings = {
// URL you want to redirect back to. The domain (www.example.com) for this URL
// must be whitelisted in the Firebase Console.
'url': window.location.href, // Here we redirect back to this same page.
'handleCodeInApp': true // This must be true.
};
firebase.auth().sendSignInLinkToEmail(email, actionCodeSettings).then(function() {
// Save the email locally so you don’t need to ask the user for it again if they open
// the link on the same device.
window.localStorage.setItem('emailForSignIn', email);
// The link was successfully sent. Inform the user.
alert('An email was sent to ' + email + '. Please use the link in the email to sign-in.');
// [START_EXCLUDE]
// Re-enable the sign-in button.
document.getElementById('quickstart-sign-in').disabled = false;
// [END_EXCLUDE]
}).catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// [START_EXCLUDE]
handleError(error);
// [END_EXCLUDE]
});
// [END authwithemail]
}
}
/**
* Handles Errors from various Promises..
*/
function handleError(error) {
// Display Error.
alert('Error: ' + error.message);
console.log(error);
// Re-enable the sign-in button.
document.getElementById('quickstart-sign-in').disabled = false;
}
/**
* Handles automatically signing-in the app if we clicked on the sign-in link in the email.
*/
function handleSignIn() {
// [START handlesignin]
if (firebase.auth().isSignInWithEmailLink(window.location.href)) {
// [START_EXCLUDE]
// Disable the sign-in button during async sign-in tasks.
document.getElementById('quickstart-sign-in').disabled = true;
// [END_EXCLUDE]
// You can also get the other parameters passed in the query string such as state=STATE.
// Get the email if available.
var email = window.localStorage.getItem('emailForSignIn');
if (!email) {
// User opened the link on a different device. To prevent session fixation attacks, ask the
// user to provide the associated email again. For example:
email = window.prompt('Please provide the email you\'d like to sign-in with for confirmation.');
}
if (email) {
// The client SDK will parse the code from the link for you.
firebase.auth().signInWithEmailLink(email, window.location.href).then(function(result) {
// Clear the URL to remove the sign-in link parameters.
if (history && history.replaceState) {
window.history.replaceState({}, document.title, window.location.href.split('?')[0]);
}
// Clear email from storage.
window.localStorage.removeItem('emailForSignIn');
// Signed-in user's information.
var user = result.user;
var isNewUser = result.additionalUserInfo.isNewUser;
console.log(result)
}).catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// [START_EXCLUDE]
handleError(error);
// [END_EXCLUDE]
});
}
}
// [END handlesignin]
}
/**
* 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() {
// Restore the previously used value of the email.
var email = window.localStorage.getItem('emailForSignIn');
document.getElementById('email').value = email;
// Automatically signs the user-in using the link.
handleSignIn();
// Listening for auth state changes.
// [START authstatelistener]
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;
// Update UI.
// [START_EXCLUDE]
document.getElementById('quickstart-sign-in-status').textContent = 'Signed in';
document.getElementById('quickstart-sign-in').textContent = 'Sign out';
document.getElementById('quickstart-account-details').textContent = JSON.stringify(user, null, ' ');
// [END_EXCLUDE]
} else {
// User is signed out.
// Update UI.
// [START_EXCLUDE]
document.getElementById('quickstart-sign-in-status').textContent = 'Signed out';
document.getElementById('quickstart-sign-in').textContent = 'Sign In without password';
document.getElementById('quickstart-account-details').textContent = 'null';
// [END_EXCLUDE]
}
// [START_EXCLUDE silent]
document.getElementById('quickstart-sign-in').disabled = false;
// [END_EXCLUDE]
});
// [END authstatelistener]
document.getElementById('quickstart-sign-in').addEventListener('click', toggleSignIn, false);
}
window.onload = 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">Firebase Email Link Authentication</h2>
</div>
<div class="mdl-card__supporting-text mdl-color-text--grey-600">
<p>Enter your email below and sign in to your account through a link sent to you via email. This will automatically create an account if you do not have one already.</p>
<form onsubmit="return false">
<input class="mdl-textfield__input" style="display:inline;width:auto;" type="text" id="email" name="email" placeholder="Email"/>
<button disabled class="mdl-button mdl-js-button mdl-button--raised" id="quickstart-sign-in" name="signin">Sign In without password</button>
</form>
<!-- Container where we'll display the user details -->
<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>