Background.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Controller\Call;
 
use Bitrix\Main\Engine\Controller;
use Bitrix\UI\InfoHelper;
 
class Background extends Controller
{
    public function getAction()
    {
        $diskFolder = \Bitrix\Im\Call\Background::getUploadFolder();
        $diskFolderId = $diskFolder? (int)$diskFolder->getId(): 0;
        $infoHelperParams = \Bitrix\Main\Loader::includeModule('ui')? InfoHelper::getInitParams(): [];
 
        return [
            'backgrounds' => [
                'default' => \Bitrix\Im\Call\Background::get(),
                'custom' => \Bitrix\Im\Call\Background::getCustom(),
            ],
            'upload' => [
                'folderId' => $diskFolderId,
            ],
            'limits' => \Bitrix\Im\Call\Background::getLimitForJs(),
            'infoHelperParams' => $infoHelperParams,
        ];
    }

    public function commitAction(int $fileId)
    {
        $result = \CIMDisk::CommitBackgroundFile(
            $this->getCurrentUser()->getId(),
            $fileId
        );
 
        if (!$result)
        {
            $this->addError(new \Bitrix\Main\Error(
                "Specified fileId is not located in background folder.",
                "FILE_ID_ERROR"
            ));
 
            return false;
        }
 
        return [
            'result' => true
        ];
    }

    public function deleteAction(int $fileId)
    {
        $result = \CIMDisk::DeleteBackgroundFile(
            $this->getCurrentUser()->getId(),
            $fileId
        );
 
        if (!$result)
        {
            $this->addError(new \Bitrix\Main\Error(
                "Specified fileId is not located in background folder.",
                "FILE_ID_ERROR"
            ));
 
            return false;
        }
 
        return [
            'result' => true
        ];
    }
}