<?php

function regGetUpperDomain($domain) {
	// Remove anything before the first dot and the first dot itself
	return preg_replace("/^[^.]+\./", "", $domain);
}

function regListUserDomains($username) {
	$db = new PDO('sqlite:' . DB_PATH);
	$usernameArray[0] = $username;

	$op = $db->prepare('SELECT domain FROM registry WHERE username = ?');
	$op->execute($usernameArray);

	$domains = false;
	$i = 0;
	$data = $op->fetch();
	$domain = $data['domain'];

	while ($domain != NULL) {
		$domains[$i] = $domain;

		$data = $op->fetch();
		if (isset($data['domain']))
			$domain = $data['domain'];
		else
			$domain = NULL;

		$i++;
	}

	return $domains;
}

function regCheckDomainPossession($domain) {
	checkAbsoluteDomainFormat($domain);

	$db = new PDO('sqlite:' . DB_PATH);
	$username[0] = $_SESSION['username'];

	$op = $db->prepare('SELECT domain FROM registry WHERE username = ?');
	$op->execute($username);

	$dbDomain = $op->fetch()['domain'];

	$owned = false;
	while ($dbDomain != NULL) {
		if ($dbDomain === $domain) {
			$owned = true;
			break;
		}
		$dbDomain = $op->fetch()['domain'];
	}

	if (!($owned === true))
		userError("You don't own this domain.");
}

function regIsFree($domain) {

	$domainArray[0] = $domain;

	$db = new PDO('sqlite:' . DB_PATH);

	$req = $db->prepare('SELECT domain FROM registry WHERE domain = ?');
	$req->execute($domainArray);

	$data = $req->fetch();

	if (isset($data['domain'])) {
		return false;
	} else {
		return true;
	}

}