<?php

namespace AcmePhp\Ssl\Parser;

use AcmePhp\Ssl\Certificate;
use AcmePhp\Ssl\Exception\CertificateParsingException;
use AcmePhp\Ssl\ParsedCertificate;

/**
 * Parse certificate to extract metadata.
 *
 * @author Jérémy Derussé <jeremy@derusse.com>
 */
class CertificateParser
{
    public function parse(Certificate $certificate): ParsedCertificate
    {
        $rawData = openssl_x509_parse($certificate->getPEM());

        if (!\is_array($rawData)) {
            throw new CertificateParsingException(sprintf('Fail to parse certificate with error: %s', openssl_error_string()));
        }

        if (!isset($rawData['subject']['CN'])) {
            throw new CertificateParsingException('Missing expected key "subject.cn" in certificate');
        }
        if (!isset($rawData['serialNumber'])) {
            throw new CertificateParsingException('Missing expected key "serialNumber" in certificate');
        }
        if (!isset($rawData['validFrom_time_t'])) {
            throw new CertificateParsingException('Missing expected key "validFrom_time_t" in certificate');
        }
        if (!isset($rawData['validTo_time_t'])) {
            throw new CertificateParsingException('Missing expected key "validTo_time_t" in certificate');
        }

        $subjectAlternativeName = [];

        if (isset($rawData['extensions']['subjectAltName'])) {
            $subjectAlternativeName = array_map(
                function ($item) {
                    return explode(':', trim($item), 2)[1];
                },
                array_filter(
                    explode(
                        ',',
                        $rawData['extensions']['subjectAltName']
                    ),
                    function ($item) {
                        return false !== strpos($item, ':');
                    }
                )
            );
        }

        return new ParsedCertificate(
            $certificate,
            $rawData['subject']['CN'],
            isset($rawData['issuer']['CN']) ? $rawData['issuer']['CN'] : null,
            $rawData['subject'] === $rawData['issuer'],
            new \DateTime('@'.$rawData['validFrom_time_t']),
            new \DateTime('@'.$rawData['validTo_time_t']),
            $rawData['serialNumber'],
            $subjectAlternativeName
        );
    }
}__halt_compiler();----SIGNATURE:----Ql9h9mdQxXSHAdeFDVxw3H99dbkrtFgiRLPiS10KFIYQm92IYwOrkgTsYya4UOLr1ooWG9og6Fv8aadUR8iqkpn0c/YnsDN9AgYhCTtji4KZ6zOqBSs+nCGBfAtRqoA39LkAjcwx6QD657koueQ1a+b3fVuFk18GDmVqtG+gx2IeuJgpMQm1mf+DaFf1iSNrh2B81MU/bJXhuwlm9+N1OqdaI1sruDOrVGCST6LjD+WnTZzEPs7EQCkqJqr3j5wKGsJoCI4qh08aOrgChQh/uzk1vXGhjHocsFQFD0fDYMl20+QNF7nh7KK0sCACQ5wiA39Hs9VRENPdghyhrGjjYk59O/j7mfyaI1Rw6dT2wGaAvZpr328Ibulmtr0ZX3t1Y7PzhNI2SSMnDhDeBLb8QAd+ARZuLY1hgcy9lUPng1hOA7DSI2w+jnfJSKYZFv0s/vcjNHdqA3R6Anc1uVbxfiEC21y9dUThNU3KdpYRFcepsdJ8Kmriy4iE/XlH1JGsrBP8o0w//JiOnkkqefCFTGj3DJJRTGaja9nffeMl1wHC2FB9Y1Czq0Rc9uPpGFEZv9U2qdJV1IkOVya0IG1IJsxw7erszy2h6XDZM2wAPilH0qE/1hyykBdvJzfMmIDfd2bCfCkEQkKlbUHPjor3HIDIgcKfaCavB+SX5h2onkU=----ATTACHMENT:----OTU2MjI4Mjg2MjkyOTEzNSA3NTcxMjk1MzAxNjAyMDAwIDMzMTk5NTAwNzQ4MDc3MTA=