<?php

namespace Jose\Component\Encryption\Algorithm\KeyEncryption;

use AESKW\Wrapper as WrapperInterface;
use InvalidArgumentException;
use Jose\Component\Core\JWK;
use ParagonIE\ConstantTime\Base64UrlSafe;
use RuntimeException;

use function in_array;
use function is_string;

abstract class AESKW implements KeyWrapping
{
    public function __construct()
    {
        if (! interface_exists(WrapperInterface::class)) {
            throw new RuntimeException('Please install "spomky-labs/aes-key-wrap" to use AES-KW algorithms');
        }
    }

    public function allowedKeyTypes(): array
    {
        return ['oct'];
    }

    /**
     * @param array<string, mixed> $completeHeader
     * @param array<string, mixed> $additionalHeader
     */
    public function wrapKey(JWK $key, string $cek, array $completeHeader, array &$additionalHeader): string
    {
        $k = $this->getKey($key);
        $wrapper = $this->getWrapper();

        return $wrapper::wrap($k, $cek);
    }

    /**
     * @param array<string, mixed> $completeHeader
     */
    public function unwrapKey(JWK $key, string $encrypted_cek, array $completeHeader): string
    {
        $k = $this->getKey($key);
        $wrapper = $this->getWrapper();

        return $wrapper::unwrap($k, $encrypted_cek);
    }

    public function getKeyManagementMode(): string
    {
        return self::MODE_WRAP;
    }

    abstract protected function getWrapper(): WrapperInterface;

    private function getKey(JWK $key): string
    {
        if (! in_array($key->get('kty'), $this->allowedKeyTypes(), true)) {
            throw new InvalidArgumentException('Wrong key type.');
        }
        if (! $key->has('k')) {
            throw new InvalidArgumentException('The key parameter "k" is missing.');
        }
        $k = $key->get('k');
        if (! is_string($k)) {
            throw new InvalidArgumentException('The key parameter "k" is invalid.');
        }

        return Base64UrlSafe::decodeNoPadding($k);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjUyMjU2MzA3NDQ1MzcyIDc2NDE3NTQ3NzE5NzM0NjMgMjQ1NzY2ODQ0MTUwMDQxOQ==