<?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:----OTM1Mzc3MDk2MjkzNjY1MCAyNjU1OTEzMzUxMDQzODAgNTkwMjg3OTgyOTgzODY2OQ==