<?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();


    $det = $db->query('SELECT "question", "answer0", "answer1", "answer2", "answer3", "Categories_ID"
          FROM "Questions" WHERE "ID" = 1')['data'][0];


    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;

?>