<?php

$ldap_domain_name = "woodywood";

$handle = ldap_connect("ldap://$ldap_domain_name.local");
ldap_set_option($handle, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($handle, LDAP_OPT_REFERRALS, 0);

class UserInfo
{
	public ?string $fullName;
	public array $ous;

	public function __construct(?string $fullName, array $ous)
	{
		$this->fullName = $fullName;
		$this->ous = $ous;
	}
}

function LdapConnect(string $domain, string $username, string $password, ?array $controls): LDAP\Result|false
{
	global $handle;
	$bind = ldap_bind_ext($handle, $username . '@' . $domain, $password, $controls);
	LogConnection();
	return $bind;
}

function LogConnection() {}

function LdapConnectAndBind()
{
	global $ldap_domain_name;
	$ldap_instance = ldap_connect("ldap://$ldap_domain_name.local");
	ldap_set_option($ldap_instance, LDAP_OPT_PROTOCOL_VERSION, 3);
	ldap_set_option($ldap_instance, LDAP_OPT_REFERRALS, 0);
	ldap_bind($ldap_instance, "Administrateur@woodywood", "3AFISE+25");
	return $ldap_instance;
}

function LdapGetUserInfo(string $user): ?UserInfo
{
	global $handle;
	global $ldap_domain_name;
	$search_base = "DC=$ldap_domain_name,DC=local";
	$search_filter = "(sAMAccountName=$user)";
	$search_attributes = ["distinguishedname"];
	$result = ldap_search($handle, $search_base, $search_filter, $search_attributes);
	$entries = ldap_get_entries($handle, $result);

	if ($entries['count'] > 0) {
		$dn = $entries[0]['distinguishedname'][0];
		return new UserInfo(GetValue($dn, "CN")[0], GetValue($dn, "OU"));
	}

	return null;
}

function GetValue(string $dnStr, string $key): array
{
	preg_match_all("/$key=([^,]+)/", $dnStr, $matches);
	return isset($matches[1]) ? $matches[1] : [];
}

function LdapGetObjectsInOU(string $ou, string $objectType, string $field): array
{
	global $ldap_domain_name;
	global $handle;
	// $handle = LdapConnectAndBind();
	$searchBase = "DC=$ldap_domain_name,DC=local";
	$filter = "(objectClass=$objectType)";
	$attributes = [];

	$object_values = [];

	$result = ldap_search($handle, $searchBase, $filter, $attributes);
	$entries = ldap_get_entries($handle, $result);

	if ($entries['count'] > 0) {
		foreach ($entries as $key => $entry) {
			if (!isset($entry["dn"]))
				continue;
			$dn = $entry["dn"];
			$ous = GetValue($dn, "OU");

			$res = array_search($ou, $ous);
			if (!is_numeric($res))
				continue;

			$cn = GetValue($dn, $field);
			array_push($object_values, $cn);
		}
	}

	return $object_values;
}

function LdapGetUsersInOU(string $ou): array
{
	return LdapGetObjectsInOU($ou, "user", "CN");
}

function LdapGetGroupsInOU(string $ou): array
{
	return LdapGetObjectsInOU($ou, "group", "CN");
}