CCrmActivityRestProxy::innerUpdate

protected function innerUpdate($ID, &$fields, &$errors, array $params = null)
{
	$currentFields = CCrmActivity::GetByID($ID);
	CCrmActivity::PrepareStorageElementIDs($currentFields);

	if(!is_array($currentFields))
	{
		$errors[] = 'Activity is not found.';
		return false;
	}

	$typeID = intval($currentFields['TYPE_ID']);
	$currentOwnerID = intval($currentFields['OWNER_ID']);
	$currentOwnerTypeID = intval($currentFields['OWNER_TYPE_ID']);

	if(!CCrmActivity::CheckUpdatePermission($currentOwnerTypeID, $currentOwnerID))
	{
		$errors[] = 'Access denied.';
		return false;
	}

	$ownerID = isset($fields['OWNER_ID']) ? intval($fields['OWNER_ID']) : 0;
	if($ownerID <= 0)
	{
		$ownerID = $currentOwnerID;
	}

	$ownerTypeID = isset($fields['OWNER_TYPE_ID']) ? intval($fields['OWNER_TYPE_ID']) : 0;
	if($ownerTypeID <= 0)
	{
		$ownerTypeID = $currentOwnerTypeID;
	}

	if(($ownerTypeID !== $currentOwnerTypeID || $ownerID !== $currentOwnerID)
		&& !CCrmActivity::CheckUpdatePermission($ownerTypeID, $ownerID))
	{
		$errors[] = 'Access denied.';
		return false;
	}

	if ($currentFields['PROVIDER_ID'] === \Bitrix\Crm\Activity\Provider\RestApp::getId())
	{
		$clientId = $this->getServer()->getClientId();
		$application = $clientId ? \Bitrix\Rest\AppTable::getByClientId($clientId) : null;

		if (!$application)
		{
			$errors[] = 'Application context required.';
			return false;
		}

		if ((int)$currentFields['ASSOCIATED_ENTITY_ID'] !== $application['ID'])
		{
			$errors[] = 'Access denied.';
			return false;
		}
	}
	if (($currentFields['PROVIDER_ID'] ?? null) === \Bitrix\Crm\Activity\Provider\ConfigurableRestApp::getId())
	{
		$errors[] = 'Use crm.activity.configurable.update for this activity provider';

		return false;
	}

	$communications = isset($fields['COMMUNICATIONS']) && is_array($fields['COMMUNICATIONS'])
		? $fields['COMMUNICATIONS'] : null;

	if(is_array($communications))
	{
		$bindings = array();
		if($ownerTypeID > 0 && $ownerID > 0)
		{
			$bindings["{$ownerTypeID}_{$ownerID}"] = array(
				'OWNER_TYPE_ID' => $ownerTypeID,
				'OWNER_ID' => $ownerID
			);
		}

		$this->internalizeCommunications($ownerTypeID, $ownerID, $typeID, $communications, $bindings);

		if(empty($communications))
		{
			$errors[] = 'The field COMMUNICATIONS is not defined or invalid.';
			return false;
		}

		$fields['BINDINGS'] = array_values($bindings);
		$fields['COMMUNICATIONS'] = $communications;
	}


	$storageTypeID = $fields['STORAGE_TYPE_ID'] = CCrmActivity::GetDefaultStorageTypeID();
	unset($fields['STORAGE_ELEMENT_IDS']);
	if($storageTypeID === StorageType::WebDav)
	{
		$webdavElements = isset($fields['WEBDAV_ELEMENTS']) && is_array($fields['WEBDAV_ELEMENTS'])
			? $fields['WEBDAV_ELEMENTS'] : array();

		$prevStorageElementIDs = $currentFields['STORAGE_ELEMENT_IDS'] ?? array();
		$oldStorageElementIDs = array();
		foreach($webdavElements as &$element)
		{
			$elementID = isset($element['ELEMENT_ID']) ? intval($element['ELEMENT_ID']) : 0;
			if($elementID > 0)
			{
				if(!isset($fields['STORAGE_ELEMENT_IDS']))
				{
					$fields['STORAGE_ELEMENT_IDS'] = array();
				}
				$fields['STORAGE_ELEMENT_IDS'][] = $elementID;
			}

			$oldElementID = isset($element['OLD_ELEMENT_ID']) ? intval($element['OLD_ELEMENT_ID']) : 0;
			if($oldElementID > 0
				&& ($elementID > 0 || (isset($element['DELETE']) && $element['DELETE'] === true)))
			{
				if(in_array($oldElementID, $prevStorageElementIDs))
				{
					$oldStorageElementIDs[] = $oldElementID;
				}
			}
		}
		unset($element);
	}
	else if($storageTypeID === StorageType::Disk)
	{
		$diskFiles = isset($fields['FILES']) && is_array($fields['FILES'])
			? $fields['FILES'] : array();

		if(empty($diskFiles))
		{
			//For backward compatibility only
			$diskFiles = isset($fields['WEBDAV_ELEMENTS']) && is_array($fields['WEBDAV_ELEMENTS'])
				? $fields['WEBDAV_ELEMENTS'] : array();
		}

		foreach($diskFiles as &$fileInfo)
		{
			$fileID = isset($fileInfo['FILE_ID']) ? (int)$fileInfo['FILE_ID'] : 0;
			if($fileID > 0)
			{
				if(!isset($fields['STORAGE_ELEMENT_IDS']))
				{
					$fields['STORAGE_ELEMENT_IDS'] = array();
				}
				$fields['STORAGE_ELEMENT_IDS'][] = $fileID;
			}
		}
		unset($fileInfo);
	}

	$regEvent = true;
	if(is_array($params) && isset($params['REGISTER_HISTORY_EVENT']))
	{
		$regEvent = mb_strtoupper($params['REGISTER_HISTORY_EVENT']) === 'Y';
	}
	$result = CCrmActivity::Update($ID, $fields, false, $regEvent, array());
	if($result === false)
	{
		$errors[] = CCrmActivity::GetLastErrorMessage();
	}
	else
	{
		if(is_array($communications))
		{
			CCrmActivity::SaveCommunications($ID, $communications, $fields, false, false);
		}

		if(!empty($oldStorageElementIDs))
		{
			$webdavIBlock = $this->prepareWebDavIBlock();
			foreach($oldStorageElementIDs as $elementID)
			{
				$webdavIBlock->Delete(array('element_id' => $elementID));
			}
		}
	}

	return $result;
}