<?php
/**
 * Created by PhpStorm.
 * User: leanderschmedemann
 * Date: 02/03/2017
 * Time: 10:23
 */

require_once('includes.inc.php');
define('PATTERN', '/^[a-zA-Z0-9 ]{6,20}$/');
$data = '';
$error = 0;
$name = isset($_GET['name']) ?
    $_GET['name'] : '';
$uid = md5(uniqid(rand(), true));
$db = new Database();

if(preg_match(PATTERN, $name) != 1) {
    $error = 11101;
} else {
    // Create user.
    $db->query(
        'INSERT INTO "Users" ("ID", "name")
        VALUES ($1, $2)',
        array($uid, $name)
    );
    // Create error if user to create already exists.
    if(preg_match('/violates unique constraint "Users_name_unique"/', pg_last_error()) == 1) {
        $error = 11102;
    } else {
        $data = array('uid' => $uid, 'name' => $name);
    }
}
$response = Database::create_response($data, $error);
print $response;

?>