<?php

function checkDomainFormat($domain) {
	// If the domain must end without a dot
	if (!filter_var($domain, FILTER_VALIDATE_DOMAIN) OR !preg_match("/^([a-z0-9_-]{1,63}\.){1,126}[a-z0-9]{1,63}$/", $domain))
		userError("Domain malformed.");
}

function formatDomain($domain) {
	$domain = rtrim(strtolower($domain), '.');
	checkDomainFormat($domain);
	return $domain;
}

function listFsDirs($username) {
	$absoluteDirs = glob(CONF['ht']['ht_path'] . "/" . $username . "/*/", GLOB_ONLYDIR);
	$dirs = [];
	foreach ($absoluteDirs as $absoluteDir)
		if (preg_match("/^[\p{L}\p{N}_-]+$/u", basename($absoluteDir)))
			array_push($dirs, basename($absoluteDir));
	return $dirs;
}

function addSite($username, $siteDir, $domain, $domainType, $protocol) {
	insert('sites', [
		'username' => $username,
		'site_dir' => $siteDir,
		'domain' => $domain,
		'domain_type' => $domainType,
		'protocol' => $protocol,
		'creation_date' => date("Y-m-d H:i:s"),
	]);
}

function dirsStatuses($username, $domainType, $protocol) {
	$dbDirs = query('select', 'sites', [
		'username' => $username,
		'domain_type' => $domainType,
		'protocol' => $protocol,
	], 'site_dir');
	$dirs = [];
	foreach (listFsDirs($username) as $fsDir)
		$dirs[$fsDir] = in_array($fsDir, $dbDirs);
	return $dirs;
}

function htDeleteSite($dir, $domainType, $protocol) {

	if ($domainType === 'onion') {
		// Delete Tor config
		if (unlink(CONF['ht']['tor_config_path'] . '/' . $_SESSION['username'] . '/' . $dir) !== true)
			serverError("Failed to delete Tor configuration.");

		// Reload Tor
		exec(CONF['ht']['sudo_path'] . " " . CONF['ht']['systemctl_path'] . " reload " . CONF['ht']['tor_service'], $output, $code);
		if ($code !== 0)
			serverError("Failed to reload Tor.");

		// Delete Tor keys
		exec(CONF['ht']['sudo_path'] . ' -u ' . CONF['ht']['tor_user'] . ' ' . CONF['ht']['rm_path'] . ' --recursive ' . CONF['ht']['tor_keys_path'] . '/' . $_SESSION['username'] . '/' . $dir, $output, $code);
		if ($code !== 0)
			serverError("Failed to delete Tor keys.");
	}

	// Delete Nginx config
	$domain = query('select', 'sites', [
		'username' => $_SESSION['username'],
		'domain_type' => $domainType,
		'protocol' => $protocol,
		'site_dir' => $dir,
	], 'domain')[0];
	if (unlink(CONF['ht']['nginx_config_path'] . '/' . $domain . '.conf') !== true)
		serverError("Failed to delete Nginx configuration.");

	// Reload Nginx
	exec(CONF['ht']['sudo_path'] . ' ' . CONF['ht']['systemctl_path'] . ' reload nginx', result_code: $code);
	if ($code !== 0)
		serverError("Failed to reload Nginx.");

	if ($domainType === 'dns') {
		// Delete Let's Encrypt certificate
		exec(CONF['ht']['sudo_path'] . " " . CONF['ht']['certbot_path'] . " delete --quiet --cert-name " . $domain, $output, $code);
		if ($code !== 0)
			serverError("Certbot failed to delete the Let's Encrypt certificate.");
	}

	// Delete from database
	query('delete', 'sites', [
		'username' => $_SESSION['username'],
		'domain_type' => $domainType,
		'protocol' => $protocol,
		'site_dir' => $dir,
	]);
}