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;

class RecursiveDirectoryIterator implements \RecursiveIterator
{
    protected array $files = [];

    public function __construct(private Filesystem $filesystem, protected string $dir)
    {
    }

    public function key(): int|string
    {
        return key($this->files);
    }

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

    public function current(): bool|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());
    }
}