<?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:----NjUxNDY3MTMzMzI5MzU4NCAzNDc5ODYyMTc0OTU2MzcgOTEwMzYzMTU4MzM5MzM0MQ==