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<?php

include('core/init.php');

if (isset($_POST['username'], $_POST['password'], $_POST['repeat_password'])){
if (empty($_POST['username'])){
$errors[] = 'The username cannot be empty.';
}

if(empty($_POST['password']) || $_POST['repeat_password']){
$errors[] = 'The password cannot be empty.';
}

if ($_POST['password'] !== $_POST['repeat_password']){
$errors[] = 'One of the passwords are spelled incorrectly.';
}

if (user_exists($_POST['username'])){
$errors[] = 'That username is already taken';
}

if (empty($errors)){
add_user($_POST['username'], $_POST['password']);

$_SESSION['username'] = htmlentities($_POST['username']);

header('Location: protected.php');
die();
}
}

?>