RecursiveDirectoryIterator.php

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<?php

declare(strict_types=1);

namespace ILIAS\Filesystem\Finder\Iterator;

use ILIAS\Filesystem\DTO\Metadata;
use ILIAS\Filesystem\Filesystem;
use ReturnTypeWillChange;

/******************************************************************************
 *
 * This file is part of ILIAS, a powerful learning management system.
 *
 * ILIAS is licensed with the GPL-3.0, you should have received a copy
 * of said license along with the source code.
 *
 * If this is not the case or you just want to try ILIAS, you'll find
 * us at:
 *      https://www.ilias.de
 *      https://github.com/ILIAS-eLearning
 *
 *****************************************************************************/

class RecursiveDirectoryIterator implements \RecursiveIterator
{
    private Filesystem $filesystem;
    protected string $dir;
    protected array $files = [];

    public function __construct(Filesystem $filesystem, string $dir)
    {
        $this->filesystem = $filesystem;
        $this->dir = $dir;
    }

    public function key()
    {
        return key($this->files);
    }

    public function next(): void
    {
        next($this->files);
    }

    public function current(): Metadata
    {
        return current($this->files);
    }

    public function valid(): bool
    {
        return current($this->files) instanceof Metadata;
    }

    public function rewind(): void
    {
        $contents = $this->filesystem->listContents($this->dir, false);
        $this->files = array_combine(array_map(static fn (Metadata $metadata): string => $metadata->getPath(), $contents), $contents);
    }

    public function hasChildren(): bool
    {
        return $this->current()->isDir();
    }

    public function getChildren(): \ILIAS\Filesystem\Finder\Iterator\RecursiveDirectoryIterator
    {
        return new self($this->filesystem, $this->current()->getPath());
    }
}