<?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:----MzY2ODQ4NzgyOTIwNjczIDc3NzY5MzkwMTg2MjgxMzAgMzI3MTg2NTQ0MDQ5NDA2Mg==