<?php
declare(strict_types=1);
namespace Butschster\ContextGenerator\Lib\HttpClient;
use Butschster\ContextGenerator\Lib\HttpClient\Exception\HttpException;
use Butschster\ContextGenerator\Lib\HttpClient\Exception\HttpRequestException;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;
use Psr\Http\Message\StreamFactoryInterface;
final readonly class Psr18Client implements HttpClientInterface
{
private const int MAX_REDIRECTS = 5;
public function __construct(
private ClientInterface $httpClient,
private RequestFactoryInterface $requestFactory,
private StreamFactoryInterface $streamFactory,
) {}
public function get(string $url, array $headers = []): HttpResponse
{
return $this->request('GET', $url, $headers);
}
public function post(string $url, array $headers = [], ?string $body = null): HttpResponse
{
return $this->request('POST', $url, $headers, $body);
}
public function getWithRedirects(string $url, array $headers = []): HttpResponse
{
$redirectCount = 0;
$currentUrl = $url;
while (true) {
$response = $this->get($currentUrl, $headers);
if (!$response->isRedirect() || $redirectCount >= self::MAX_REDIRECTS) {
return $response;
}
$location = $response->getHeader('Location');
if ($location === null) {
throw HttpRequestException::missingRedirectLocation();
}
$currentUrl = $location;
$redirectCount++;
}
}
/**
* Send a request with the specified method to the URL
*
* @param string $method The HTTP method
* @param string $url The URL to request
* @param array<string, string> $headers Optional request headers
* @param string|null $body Optional request body (for POST, PUT, etc.)
* @return HttpResponse The response object
*
* @throws HttpException If the request fails
*/
private function request(string $method, string $url, array $headers = [], ?string $body = null): HttpResponse
{
$request = $this->requestFactory->createRequest($method, $url);
foreach ($headers as $name => $value) {
$request = $request->withHeader($name, $value);
}
// Add body if provided and stream factory is available
if ($body !== null) {
$bodyStream = $this->streamFactory->createStream($body);
$request = $request->withBody($bodyStream);
}
try {
$response = $this->httpClient->sendRequest($request);
$responseHeaders = [];
foreach ($response->getHeaders() as $name => $values) {
$responseHeaders[$name] = \implode(', ', $values);
}
return new HttpResponse(
statusCode: $response->getStatusCode(),
body: $response->getBody()->getContents(),
headers: $responseHeaders,
);
} catch (\Throwable $e) {
throw new HttpException(\sprintf('Failed to request URL "%s": %s', $url, $e->getMessage()), 0, $e);
}
}
}
