PrepareMergeAction::run

public function run(array $params)
{
	if(!Crm\Security\EntityAuthorization::isAuthorized())
	{
		$this->addError(new Main\Error('Access denied.'));
		return null;
	}

	$gridID = isset($params['gridId']) ? $params['gridId'] : '';
	if($gridID === '')
	{
		$this->addError(new Main\Error('The parameter gridId is required.'));
		return null;
	}

	$entityTypeID = isset($params['entityTypeId']) ? (int)$params['entityTypeId'] : \CCrmOwnerType::Undefined;
	if($entityTypeID === \CCrmOwnerType::Undefined)
	{
		$this->addError(new Main\Error('The parameter entityTypeId is required.'));
		return null;
	}

	$entityIDs = isset($params['entityIds']) && is_array($params['entityIds']) ? $params['entityIds'] : null;
	if(!is_array($entityIDs) || empty($entityIDs))
	{
		$this->addError(new Main\Error('The parameter entityIds is required.'));
		return null;
	}

	if(count($entityIDs) < 2)
	{
		$this->addError(new Main\Error('The parameter entityIds must contains at least two elements.'));
		return null;
	}

	if(!isset($_SESSION['CRM_ENTITY_MERGE_DATA']))
	{
		$_SESSION['CRM_ENTITY_MERGE_DATA'] = [];
	}

	sort($entityIDs, SORT_NUMERIC);
	$hash = md5(
		\CCrmOwnerType::ResolveName($entityTypeID).':'.mb_strtoupper($gridID).':'.implode(',', $entityIDs)
	);

	$_SESSION['CRM_ENTITY_MERGE_DATA'][$hash] = [
		'HASH' => $hash,
		'GRID_ID' => $gridID,
		'ENTITY_TYPE_ID' => $entityTypeID,
		'ENTITY_IDS' => $entityIDs
	];

	if(isset($_SESSION['CRM_ENTITY_MERGE_PROGRESS']))
	{
		unset($_SESSION['CRM_ENTITY_MERGE_PROGRESS'][$hash]);
	}

	return [ 'hash' => $hash ];
}