class.ilIndividualAssessmentFileStorage.php

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<?php
require_once("Modules/IndividualAssessment/interfaces/FileStorage/interface.IndividualAssessmentFileStorage.php");
include_once('Services/FileSystem/classes/class.ilFileSystemStorage.php');
class ilIndividualAssessmentFileStorage extends ilFileSystemStorage implements IndividualAssessmentFileStorage
{
    public static function getInstance($a_container_id = 0)
    {
        return new self(self::STORAGE_WEB, true, $a_container_id);
    }

    protected function getPathPostfix()
    {
        return 'iass';
    }

    protected function getPathPrefix()
    {
        return 'IASS';
    }

    public function isEmpty()
    {
        $files = $this->readDir();

        return (count($files) == 0) ? true : false;
    }

    public function setUserId($user_id)
    {
        $this->user_id = $user_id;
    }

    public function create()
    {
        if (!file_exists($this->getAbsolutePath())) {
            ilUtil::makeDirParents($this->getAbsolutePath());
        }
        return true;
    }

    public function getAbsolutePath()
    {
        $path = parent::getAbsolutePath();

        if ($this->user_id) {
            $path .= "/user_" . $this->user_id;
        }

        return $path;
    }

    public function readDir()
    {
        if (!is_dir($this->getAbsolutePath())) {
            $this->create();
        }

        $fh = opendir($this->getAbsolutePath());
        $files = array();
        while ($file = readdir($fh)) {
            if ($file != "." && $file != ".." && !is_dir($this->getAbsolutePath() . "/" . $file)) {
                $files[] = $file;
            }
        }
        closedir($fh);

        return $files;
    }

    public function uploadFile($file)
    {
        $path = $this->getAbsolutePath();

        $clean_name = preg_replace("/[^a-zA-Z0-9\_\.\-]/", "", $file["name"]);
        $new_file = $path . "/" . $clean_name;

        ilUtil::moveUploadedFile(
            $file["tmp_name"],
            $clean_name, // This parameter does not do a thing
            $new_file
        );

        return true;
    }

    public function deleteCurrentFile()
    {
        $files = $this->readDir();
        $this->deleteFile($this->getAbsolutePath() . "/" . $files[0]);
    }

    public function getFilePath()
    {
        $files = $this->readDir();
        return $this->getAbsolutePath() . "/" . $files[0];
    }

    public function deleteFileByName($file_name)
    {
        $this->deleteFile($this->getAbsolutePath() . "/" . $file_name);
    }
}