<?php

namespace AcmePhp\Ssl;

use AcmePhp\Ssl\Exception\KeyFormatException;
use Webmozart\Assert\Assert;

/**
 * Represent a SSL Private key.
 *
 * @author Jérémy Derussé <jeremy@derusse.com>
 */
class PrivateKey extends Key
{
    /**
     * {@inheritdoc}
     */
    public function getResource()
    {
        if (!$resource = openssl_pkey_get_private($this->keyPEM)) {
            throw new KeyFormatException(sprintf('Failed to convert key into resource: %s', openssl_error_string()));
        }

        return $resource;
    }

    public function getPublicKey(): PublicKey
    {
        $resource = $this->getResource();
        if (!$details = openssl_pkey_get_details($resource)) {
            throw new KeyFormatException(sprintf('Failed to extract public key: %s', openssl_error_string()));
        }

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

        return new PublicKey($details['key']);
    }

    public static function fromDER(string $keyDER): self
    {
        Assert::stringNotEmpty($keyDER, __METHOD__.'::$keyDER should be a non-empty string. Got %s');

        $der = base64_encode($keyDER);
        $lines = str_split($der, 65);
        array_unshift($lines, '-----BEGIN PRIVATE KEY-----');
        $lines[] = '-----END PRIVATE KEY-----';
        $lines[] = '';

        return new self(implode("\n", $lines));
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NTI0MDIzOTQzMjczMDIyIDg3MjU5ODM0MjYyMjM1NDAgOTMyMTMzOTk4MDk0NDU4Ng==