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<!DOCTYPE html>
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<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/9.14.0/firebase-app-compat.js"></script>
<script src="/__/firebase/9.14.0/firebase-auth-compat.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) {
firebase.auth().signOut().catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
handleError(error);
});
} else {
var email = document.getElementById('email').value;
// Sending email with sign-in link.
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.');
// Re-enable the sign-in button.
document.getElementById('quickstart-sign-in').disabled = false;
}).catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
handleError(error);
});
}
}
/**
* 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() {
if (firebase.auth().isSignInWithEmailLink(window.location.href)) {
// Disable the sign-in button during async sign-in tasks.
document.getElementById('quickstart-sign-in').disabled = true;
// 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;
handleError(error);
});
}
}
}
/**
* 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.
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.
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, ' ');
} else {
// User is signed out.
// Update UI.
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';
}
document.getElementById('quickstart-sign-in').disabled = false;
});
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>