DepartmentProvider::getStructure

public function getStructure(array $options = []): EO_Section_Collection
{
	$structureIBlockId = self::getStructureIBlockId();
	if ($structureIBlockId <= 0)
	{
		return new EO_Section_Collection();
	}

	$filter = [
		'=IBLOCK_ID' => $structureIBlockId,
		'=ACTIVE' => 'Y',
	];

	if (!empty($options['searchQuery']) && is_string($options['searchQuery']))
	{
		$filter['?NAME'] = $options['searchQuery'];
	}

	if (!empty($options['parentId']) && is_int($options['parentId']))
	{
		$filter['=IBLOCK_SECTION_ID'] = $options['parentId'];
	}

	$limit = isset($options['limit']) && is_int($options['limit']) ? $options['limit'] : 100;

	if ($this->getOptions()['hideChatBotDepartment'])
	{
		$filter['!=XML_ID'] = 'im_bot';
	}

	$rootDepartment = null;
	$rootDepartmentId = self::getRootDepartmentId();
	if ($rootDepartmentId > 0)
	{
		$rootDepartment = SectionTable::getList([
			'select' => ['ID', 'LEFT_MARGIN', 'RIGHT_MARGIN', 'DEPTH_LEVEL'],
			'filter' => [
				'=ID' => $rootDepartmentId,
				'=IBLOCK_ID' => $structureIBlockId,
				'=ACTIVE' => 'Y',
			],
		])->fetchObject();

		if ($rootDepartment)
		{
			$filter['>=LEFT_MARGIN'] = $rootDepartment->getLeftMargin();
			$filter['<=RIGHT_MARGIN'] = $rootDepartment->getRightMargin();
		}
	}

	if (!empty($options['depthLevel']) && is_int($options['depthLevel']))
	{
		if ($rootDepartment)
		{
			$filter['<=DEPTH_LEVEL'] = $options['depthLevel'] + $rootDepartment->getDepthLevel();
		}
		else
		{
			$filter['<=DEPTH_LEVEL'] = $options['depthLevel'];
		}
	}

	return SectionTable::getList([
			'select' => ['ID', 'NAME', 'DEPTH_LEVEL', 'IBLOCK_SECTION_ID', 'LEFT_MARGIN', 'RIGHT_MARGIN'],
			'filter' => $filter,
			'order' => ['LEFT_MARGIN' => 'asc'],
			'limit' => $limit,
	])->fetchCollection();
}