<?php
/** Hardened Dompdf renderer for versioned HTML document templates. @package Leanmerce\CommerceCompliance */
namespace Leanmerce\CommerceCompliance\Infrastructure\Pdf;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

use Leanmerce\CommerceCompliance\Domain\Document\HtmlPdfRendererInterface;
final class DompdfHtmlPdfRenderer implements HtmlPdfRendererInterface {
	public function is_available(): bool {
		return class_exists( '\\Dompdf\\Dompdf' ) && class_exists( '\\Dompdf\\Options' ); }
	public function renderer_id(): string {
		return 'dompdf-3.1.6-hardened'; }
	public function render( string $html ): string {
		if ( ! $this->is_available() ) {
			throw new \RuntimeException( 'Dompdf 3.1.6 is unavailable; HTML PDF rendering cannot proceed.' ); }
		$options = new \Dompdf\Options();
		$options->set( 'isRemoteEnabled', false );
		$options->set( 'isPhpEnabled', false );
		$options->set( 'isJavascriptEnabled', false );
		$options->set( 'defaultFont', 'DejaVu Sans' );
		$options->set(
			'allowedProtocols',
			array(
				'data://' => array( 'rules' => array() ),
				'file://' => array( 'rules' => array() ),
			)
		);
		$roots = array();
		foreach ( array( defined( 'LMCC_PLUGIN_DIR' ) ? LMCC_PLUGIN_DIR : null ) as $root ) {
			if ( is_string( $root ) && '' !== $root && is_dir( $root ) ) {
				$real_root = realpath( $root );
				$roots[]   = false !== $real_root ? $real_root : $root; }
		}
		if ( array() !== $roots ) {
			$options->setChroot( $roots ); }
		$dompdf = new \Dompdf\Dompdf( $options );
		$dompdf->loadHtml( $html, 'UTF-8' );
		$dompdf->setPaper( 'A4', 'portrait' );
		$dompdf->render();
		$pdf = $dompdf->output();
		if ( ! is_string( $pdf ) || strlen( $pdf ) < 8 || '%PDF-' !== substr( $pdf, 0, 5 ) ) {
			throw new \RuntimeException( 'Dompdf did not produce a valid PDF payload.' ); }
		return $pdf;
	}
}