class.ilObjFileStakeholder.php

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<?php
use ILIAS\ResourceStorage\Stakeholder\AbstractResourceStakeholder;
use ILIAS\ResourceStorage\Identification\ResourceIdentification;

class ilObjFileStakeholder extends AbstractResourceStakeholder
{
    protected int $owner = 6;
    protected ?ilDBInterface $database;

    public function __construct(int $owner = 6)
    {
        $this->owner = $owner;
    }

    public function getId(): string
    {
        return 'file_obj';
    }

    public function getOwnerOfNewResources(): int
    {
        return $this->owner;
    }

    public function resourceHasBeenDeleted(ResourceIdentification $identification): bool
    {
        global $DIC;
        $this->database = $DIC->database();
        $r = $this->database->queryF(
            "SELECT file_id FROM file_data WHERE rid = %s",
            ['text'],
            [$identification->serialize()]
        );
        $d = $this->database->fetchObject($r);
        if (isset($d->file_id)) {
            try {
                $this->database->manipulateF(
                    "UPDATE object_data SET offline = 1 WHERE obj_id = %s",
                    ['text'],
                    [$d->file_id]
                );
            } catch (Throwable $t) {
                return false;
            }
            return true;
        }
        return false;
    }
}