<?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:----MjIyNjk1OTUyMTA0NDc2NSA0Nzg1NzIyNzE2MzEyNDc0IDQxOTM1NzM5Njk2NTUxMTE=