Department.php

<?php
 
namespace Bitrix\Im\Configuration;
 
use Bitrix\Main\Loader;
 
class Department
{
    private $id;
 
    public function __construct(int $id = 0)
    {
        if ($id > 0)
        {
            $this->id = $id;
        }
    }
 
    public function setId(int $id): void
    {
        $this->id = $id;
    }
 
    public function getPathFromHeadToDepartment(): array
    {
        if (!Loader::includeModule('iblock'))
        {
            return [];
        }
 
        $departmentTree = \CIntranetUtils::GetDeparmentsTree(0);
        $topDepartmentId = self::getTopDepartmentId();
 
        if (!$topDepartmentId || empty($departmentTree) || !$this->id)
        {
            return [];
        }
 
        $path[] = $this->id;
        $departmentId = $this->id;
 
        while ($departmentId && $departmentId != $topDepartmentId)
        {
            $departmentId = $this->getHeadDepartmentId($departmentId, $departmentTree) ?? $topDepartmentId;
            $path[] = $departmentId;
        }
 
        return array_reverse($path);
    }
 
    protected function getHeadDepartmentId(int $curId, array $departmentTree): ?int
    {
        foreach ($departmentTree as $headDepartmentId => $subDepartments)
        {
            foreach ($subDepartments as $subDepartmentId)
            {
                if ((int)$subDepartmentId == $curId)
                {
                    return (int)$headDepartmentId;
                }
            }
        }
 
        return null;
    }
 
    public function getAccessCodes(array $departmentIds): array
    {
        $accessCodes = [];
        foreach ($departmentIds as $departmentId)
        {
            if ((int)$departmentId === $this->id)
            {
                $accessCodes[] = 'D' . $this->id;
                $accessCodes[] = 'DR' . $this->id;
            }
            else
            {
                $accessCodes[] = 'DR' . $departmentId;
            }
        }
        return $accessCodes;
    }
 
    public static function getTopDepartmentId()
    {
        if (!Loader::includeModule("iblock"))
        {
            return false;
        }
 
        $departmentId = false;
        $res = \CIBlock::GetList([], ["CODE" => "departments"]);
        if ($iblock = $res->Fetch())
        {
            $res = \CIBlockSection::GetList(
                [],
                [
                    "SECTION_ID" => 0,
                    "IBLOCK_ID" => $iblock["ID"]
                ]
            );
            if ($department = $res->Fetch())
            {
                $departmentId = (int)$department['ID'];
            }
        }
 
        return $departmentId;
    }
}