<?php

declare(strict_types=1);

namespace Facile\OpenIDClient\Middleware;

use Facile\OpenIDClient\Authorization\AuthRequestInterface;
use function Facile\OpenIDClient\base64url_encode;
use Facile\OpenIDClient\Client\ClientInterface;
use Facile\OpenIDClient\Exception\LogicException;
use Facile\OpenIDClient\Exception\RuntimeException;
use Facile\OpenIDClient\Service\AuthorizationService;
use Facile\OpenIDClient\Session\AuthSessionInterface;
use Http\Discovery\Psr17FactoryDiscovery;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use function random_bytes;

class AuthRedirectHandler implements RequestHandlerInterface
{
    /** @var AuthorizationService */
    private $authorizationService;

    /** @var ResponseFactoryInterface */
    private $responseFactory;

    /** @var null|ClientInterface */
    private $client;

    /**
     * @var int
     *
     * @psalm-var positive-int
     */
    private $randomBytes;

    /**
     * @psalm-param positive-int $randomBytes
     */
    public function __construct(
        AuthorizationService $authorizationService,
        ?ResponseFactoryInterface $responseFactory = null,
        ?ClientInterface $client = null,
        int $randomBytes = 32
    ) {
        $this->authorizationService = $authorizationService;
        $this->responseFactory = $responseFactory ?? Psr17FactoryDiscovery::findResponseFactory();
        $this->client = $client;
        $this->randomBytes = $randomBytes;
    }

    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $authRequest = $request->getAttribute(AuthRequestInterface::class);

        if (! $authRequest instanceof AuthRequestInterface) {
            throw new RuntimeException('Unable to find a valid attribute for ' . AuthRequestInterface::class);
        }

        /** @var null|AuthSessionInterface $authSession */
        $authSession = $request->getAttribute(AuthSessionInterface::class);

        if ($authSession instanceof AuthSessionInterface) {
            $state = $authRequest->getState() ?? base64url_encode(random_bytes($this->randomBytes));
            $nonce = $authRequest->getNonce() ?? base64url_encode(random_bytes($this->randomBytes));

            $authSession->setState($state);
            $authSession->setNonce($nonce);

            $authRequest = $authRequest->withParams(['state' => $state]);
            $authRequest = $authRequest->withParams(['nonce' => $nonce]);
        }

        $client = $this->client ?? $request->getAttribute(ClientInterface::class);

        if (! $client instanceof ClientInterface) {
            throw new LogicException('No OpenID client provided');
        }

        $uri = $this->authorizationService->getAuthorizationUri($client, $authRequest->createParams());

        return $this->responseFactory->createResponse(302)
            ->withHeader('location', $uri);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTA1ODc2NTc1NDM5MDU1NiAyNjc2NzQ0MjExODI2NjMyIDkzNzE1MzUzMjA4MDU5MDk=