<?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:----NjQ1NDMxMjkzODI2MTk3MSA1MDg3MzIzNzE2OTg4MzYxIDc1NjExOTg4MzYwMDgzMDk=