Code.php

<?php
declare(strict_types = 1);

namespace Embed\Adapters\Ideone\Detectors;

use Embed\Detectors\Code as Detector;
use Embed\EmbedCode;
use function Embed\html;

/**
 * @extends Detector<\Embed\Adapters\Ideone\Extractor>
 */
class Code extends Detector
{
    public function detect(): ?EmbedCode
    {
        $result = parent::detect();
        return $result !== null ? $result : $this->fallback();
    }

    private function fallback(): ?EmbedCode
    {
        $uri = $this->extractor->getUri();
        $id = explode('/', $uri->getPath())[1] ?? '';

        if ($id === '' || $id === '0') {
            return null;
        }

        return new EmbedCode(
            html('script', ['src' => "https://ideone.com/e.js/{$id}"])
        );
    }
}