ChannelRepository::getCommunicationsHolders

static function getCommunicationsHolders(ItemIdentifier $source): array
{
	if ($source->getEntityTypeId() === \CCrmOwnerType::Order)
	{
		return self::getCommunicationsHoldersForOrder($source);
	}

	if (!\CCrmOwnerType::isUseFactoryBasedApproach($source->getEntityTypeId()))
	{
		return [];
	}

	$sourceItem = self::fetchItem($source->getEntityTypeId(), $source->getEntityId());
	if (!$sourceItem)
	{
		return [];
	}

	$result = [
		\CCrmOwnerType::Contact => [],
		\CCrmOwnerType::Company => [],
		\CCrmOwnerType::Lead => [],
	];

	if (isset($result[$source->getEntityTypeId()]))
	{
		$result[$source->getEntityTypeId()][$source->getEntityId()] = $source->getEntityId();
	}

	if ($sourceItem->hasField(Item::FIELD_NAME_COMPANY_ID) && $sourceItem->getCompanyId() > 0)
	{
		$result[\CCrmOwnerType::Company][$sourceItem->getCompanyId()] = $sourceItem->getCompanyId();
	}

	if (
		$sourceItem->hasField(Item\Contact::FIELD_NAME_COMPANY_IDS)
		&& !empty($sourceItem->get(Item\Contact::FIELD_NAME_COMPANY_IDS))
	)
	{
		foreach ($sourceItem->get(Item\Contact::FIELD_NAME_COMPANY_IDS) as $companyId)
		{
			if ((int)$companyId > 0)
			{
				$result[\CCrmOwnerType::Company][$companyId] = (int)$companyId;
			}
		}
	}

	if ($sourceItem->hasField(Item::FIELD_NAME_CONTACT_ID) && $sourceItem->getContactId() > 0)
	{
		$result[\CCrmOwnerType::Contact][$sourceItem->getContactId()] = $sourceItem->getContactId();
	}

	if ($sourceItem->hasField(Item::FIELD_NAME_CONTACT_IDS) && !empty($sourceItem->getContactIds()))
	{
		foreach ($sourceItem->getContactIds() as $contactId)
		{
			if ((int)$contactId > 0)
			{
				$result[\CCrmOwnerType::Contact][$contactId] = (int)$contactId;
			}
		}
	}

	return $result;
}