<?php

namespace AcmePhp\Ssl\Parser;

use AcmePhp\Ssl\Exception\KeyFormatException;
use AcmePhp\Ssl\Exception\KeyParsingException;
use AcmePhp\Ssl\Key;
use AcmePhp\Ssl\ParsedKey;

/**
 * Parse keys to extract metadata.
 *
 * @author Titouan Galopin
 */
class KeyParser
{
    public function parse(Key $key): ParsedKey
    {
        try {
            $resource = $key->getResource();
        } catch (KeyFormatException $e) {
            throw new KeyParsingException('Fail to load resource for key', 0, $e);
        }

        $rawData = openssl_pkey_get_details($resource);

        // PHP 8 automatically frees the key instance and deprecates the function
        if (\PHP_VERSION_ID < 80000) {
            openssl_free_key($resource);
        }

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

        foreach (['type', 'key', 'bits'] as $requiredKey) {
            if (!isset($rawData[$requiredKey])) {
                throw new KeyParsingException(sprintf('Missing expected key "%s" in OpenSSL key', $requiredKey));
            }
        }

        $details = [];

        if (OPENSSL_KEYTYPE_RSA === $rawData['type']) {
            $details = $rawData['rsa'];
        } elseif (OPENSSL_KEYTYPE_DSA === $rawData['type']) {
            $details = $rawData['dsa'];
        } elseif (OPENSSL_KEYTYPE_DH === $rawData['type']) {
            $details = $rawData['dh'];
        } elseif (OPENSSL_KEYTYPE_EC === $rawData['type']) {
            $details = $rawData['ec'];
        }

        return new ParsedKey($key, $rawData['key'], $rawData['bits'], $rawData['type'], $details);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTIwMDI4ODI1NzEwNzQ4MSAyMTYyMDc5NjA4NTM1OTQ2IDkzNTUwNDA3ODE3Mzk2OTI=