<?php

use GuzzleHttp\Client;

use GuzzleHttp\Handler\CurlHandler;

use GuzzleHttp\HandlerStack;

use Psr\Http\Message\RequestInterface;

use Unleash\Client\UnleashBuilder;

use Symfony\Component\HttpClient\Psr18Client;

require __DIR__ . '/_common.php';

// let's create some middleware

$headerMiddleware = function (string $headerName, string $headerValue) {

return function (callable $next) use ($headerName, $headerValue) {

return function (RequestInterface $request, array $options) use ($next, $headerName, $headerValue) {

$request = $request->withHeader($headerName, $headerValue);

return $next($request, $options);

};

};

};

$handlerStack = new HandlerStack(new CurlHandler());

$handlerStack->push($headerMiddleware('X-My-Custom-Header', 'Hello there'));

$httpClient = new Client(['handler' => $handlerStack]);

// let's say you want to use Guzzle http client but Symfony/Nyholm request factory. Sure, you can!

$requestFactory = new Psr18Client();

$unleash = UnleashBuilder::create()

->withAppName($appName)

->withAppUrl($appUrl)

->withInstanceId($instanceId)

->withHttpClient($httpClient) // now every request will contain header X-My-Custom-Header with value Hello there

->withRequestFactory($requestFactory) // requests will now be created by Symfony factory

->withHeader('Authorization', $apiKey)

->build();

var_dump($unleash->isEnabled('test'));