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<?php
include_once './includes/Session.php';
include_once './includes/model/User.php';
include_once './includes/functions_user.php';

session_start();

if ($_SERVER['REQUEST_METHOD'] == 'POST' and $_SESSION['signed_in']) {
	$errors = array();
	$user_pass = "";

	if (empty($_POST['user_pass'])) {
		$errors[] = "You must provide a password.";
	} else {
		$user_pass = $_POST['user_pass'];
		$pass_check = $_POST['user_pass_check'];

		if (preg_match("/^[a-zA-Z0-9\W]*$/", $user_pass) === false) {
			$errors[] = "Password contains invalid characters!";
		}

		if ($user_pass !== $pass_check) {
			$errors[] = "The two passwords do not match.";
		}
	}

	if (!empty($errors)) {
		echo 'Please check the following problems: <ul>';
		foreach ($errors as $err) {
			echo '<li>' . $err . '</li>';
		}
		echo '</ul>';
	} else {
		$pass_hash = password_hash($user_pass, PASSWORD_DEFAULT);
		change_password(Session::get()->get_current_user(), $pass_hash);
		echo 'Password successfully changed!';
	}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Change your password - cflip.net forum</title>
    <link rel="stylesheet" href="styles/style.css">
</head>
<body>
<?php
include_once './includes/templates/header.php';

if (!Session::get()->is_signed_in()) {
	echo '<h2>You must be logged in to change your password.</h2>';
} else {
	echo '
			<h2>Change your password</h2>
			<form action="change_passw.php" method="post">
			<label for="user_pass">Password: </label><br>
			<input type="password" name="user_pass"><br>
			<label for="user_pass_check">Re-enter password: </label><br>
			<input type="password" name="user_pass_check"><br>
			<input type="submit" name="submit">
			</form>
			<br>';
}
?>
</body>
</html>