<?php

declare (strict_types=1);
namespace GuardDog\Vendor\Webauthn\CeremonyStep;

use GuardDog\Vendor\Webauthn\AuthenticatorAssertionResponse;
use GuardDog\Vendor\Webauthn\AuthenticatorAttestationResponse;
use GuardDog\Vendor\Webauthn\Exception\AuthenticatorResponseVerificationException;
use GuardDog\Vendor\Webauthn\PublicKeyCredentialCreationOptions;
use GuardDog\Vendor\Webauthn\PublicKeyCredentialRequestOptions;
use GuardDog\Vendor\Webauthn\PublicKeyCredentialSource;
final class CheckBackupBitsAreConsistent implements CeremonyStep
{
    public function process(PublicKeyCredentialSource $publicKeyCredentialSource, AuthenticatorAssertionResponse|AuthenticatorAttestationResponse $authenticatorResponse, PublicKeyCredentialRequestOptions|PublicKeyCredentialCreationOptions $publicKeyCredentialOptions, ?string $userHandle, string $host): void
    {
        $authData = $authenticatorResponse instanceof AuthenticatorAssertionResponse ? $authenticatorResponse->authenticatorData : $authenticatorResponse->attestationObject->authData;
        if ($authData->isBackupEligible()) {
            return;
        }
        $authData->isBackedUp() !== \true || throw AuthenticatorResponseVerificationException::create('Backup up bit is set but the backup is not eligible.');
    }
}
