<?php
/*
 * @copyright   Copyright (C) 2010-2024 Combodo SAS
 * @license     http://opensource.org/licenses/AGPL-3.0
 */

namespace Combodo\iTop\Core\AttributeDefinition;

use CoreException;
use Exception;
use MetaModel;

/**
 * Set of objects linked to an object (n-n), and being part of its definition
 *
 * @package     iTopORM
 */
class AttributeLinkedSetIndirect extends AttributeLinkedSet
{
	/**
	 * Useless constructor, but if not present PHP 7.4.0/7.4.1 is crashing :( (N°2329)
	 *
	 * @see https://www.php.net/manual/fr/language.oop5.decon.php states that child constructor can be ommited
	 * @see https://bugs.php.net/bug.php?id=79010 bug solved in PHP 7.4.9
	 *
	 * @param string $sCode
	 * @param array $aParams
	 *
	 * @throws Exception
	 * @noinspection SenselessProxyMethodInspection
	 */
	public function __construct($sCode, $aParams)
	{
		parent::__construct($sCode, $aParams);
	}

	public static function ListExpectedParams()
	{
		return array_merge(parent::ListExpectedParams(), array("ext_key_to_remote"));
	}

	public function IsIndirect()
	{
		return true;
	}

	public function GetExtKeyToRemote()
	{
		return $this->Get('ext_key_to_remote');
	}

	public function GetEditClass()
	{
		return "LinkedSet";
	}

	public function DuplicatesAllowed()
	{
		return $this->GetOptional("duplicates", false);
	} // The same object may be linked several times... or not...

	public function GetTrackingLevel()
	{
		return $this->GetOptional('tracking_level',
			MetaModel::GetConfig()->Get('tracking_level_linked_set_indirect_default'));
	}

	/**
	 * Find the corresponding "link" attribute on the target class, if any
	 *
	 * @return null | AttributeDefinition
	 * @throws CoreException
	 */
	public function GetMirrorLinkAttribute()
	{
		$oRet = null;
		/** @var \AttributeExternalKey $oExtKeyToRemote */
		$oExtKeyToRemote = MetaModel::GetAttributeDef($this->GetLinkedClass(), $this->GetExtKeyToRemote());
		$sRemoteClass = $oExtKeyToRemote->GetTargetClass();
		foreach (MetaModel::ListAttributeDefs($sRemoteClass) as $sRemoteAttCode => $oRemoteAttDef) {
			if (!$oRemoteAttDef instanceof AttributeLinkedSetIndirect) {
				continue;
			}
			if ($oRemoteAttDef->GetLinkedClass() != $this->GetLinkedClass()) {
				continue;
			}
			if ($oRemoteAttDef->GetExtKeyToMe() != $this->GetExtKeyToRemote()) {
				continue;
			}
			if ($oRemoteAttDef->GetExtKeyToRemote() != $this->GetExtKeyToMe()) {
				continue;
			}
			$oRet = $oRemoteAttDef;
			break;
		}

		return $oRet;
	}

	/** @inheritDoc */
	public static function IsBulkModifyCompatible(): bool
	{
		return true;
	}

}