<?php

namespace Facile\OpenIDClient\Service;

use Facile\OpenIDClient\Client\ClientInterface as OpenIDClient;
use Facile\OpenIDClient\Exception\RuntimeException;
use Psr\Http\Client\ClientExceptionInterface;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;

use function Facile\OpenIDClient\get_endpoint_uri;
use function Facile\OpenIDClient\parse_metadata_response;

/**
 * RFC 7662 Token Introspection
 *
 * @link https://tools.ietf.org/html/rfc7662 RFC 7662
 */
final class IntrospectionService
{
    /** @var ClientInterface */
    private $client;

    /** @var RequestFactoryInterface */
    private $requestFactory;

    public function __construct(ClientInterface $client, RequestFactoryInterface $requestFactory)
    {
        $this->client = $client;
        $this->requestFactory = $requestFactory;
    }

    /**
     * @param array<string, mixed> $params
     *
     * @return array<string, mixed>
     */
    public function introspect(OpenIDClient $client, string $token, array $params = []): array
    {
        $endpointUri = get_endpoint_uri($client, 'introspection_endpoint');

        $authMethod = $client->getAuthMethodFactory()
            ->create($client->getMetadata()->getIntrospectionEndpointAuthMethod());

        $tokenRequest = $this->requestFactory->createRequest('POST', $endpointUri)
            ->withHeader('content-type', 'application/x-www-form-urlencoded');

        $params += [
            'token' => $token,
            'aud' => $client->getIssuer()->getMetadata()->getIntrospectionEndpoint(),
        ];
        $tokenRequest = $authMethod->createRequest($tokenRequest, $client, $params);

        $httpClient = $client->getHttpClient() ?? $this->client;

        try {
            $response = $httpClient->sendRequest($tokenRequest);
        } catch (ClientExceptionInterface $e) {
            throw new RuntimeException('Unable to get introspection response', 0, $e);
        }

        return parse_metadata_response($response, 200);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NTE5NzEyMjYxNzg2Njc2OCA2MzgwODg1NjU3MjQ3MTIzIDgwNTE2MTc5MTQ4MjgyMTU=