MediaWiki GoogleLogin extension to automatically create new users

GoogleLogin.php

// in getClient() replace:
$client->addScope( 'email' );

// with:
$client->addScope( ['email', 'profile']);

GoogleUserMatching.php

// in getUserFromToken() replace the last occurence of:
return null;

// with the following code snippet:

// make sure we have a valid name for this user
$name = $token['name'];
$tries = 0;
verify_name:
$name = User::getCanonicalName($name, 'creatable');
if ($name === false) {
	// for some reason the name is considered to be invalid
	switch ($tries) {
		// create a safe name instead by the users email address
		// should be OK since we're using a "firstname.lastname@domain.tld" format
		case 0:
			$name = trim(ucfirst(str_replace('.', ' ', explode('@', $token['email'])[0])));
			break;
		case 1:
			// it could be that the user was removed from the Google domain
			// but is added as a new user, then the name will collide with the previous account
			$name = $token['name'].' '.date('Y-m-d');
			break;
		case 2:
			// I give up...we just use someones Google ID then instead
			$name = $token['sub'];
			break;
		default:
			die('Impossible to create a username for you...please contact your local wiki administrator');
	}

	$tries++;
	goto verify_name;
}

// create new user if it doesn't exist
$user = User::createNew($name, [
	'real_name' => $token['name'],
	'email' => $token['email'],
	'email_authenticated' => wfTimestamp(TS_MW),
]);
// store the google id and user id connection
$this->match($user, $token);

return $user;