<?php

use Amp\Http\Client\HttpClientBuilder;
use Amp\Http\Client\HttpException;
use Amp\Http\Client\Request;
use Amp\Http\Client\Response;
use Amp\Loop;

require __DIR__ . '/../.helper/functions.php';

Loop::run(static function () use ($argv) {
    try {
        // Instantiate the HTTP client
        $client = HttpClientBuilder::buildDefault();

        $request = new Request($argv[1] ?? 'https://httpbin.org/user-agent');
        $request->setHeader('foo', 'bar');

        // Make an asynchronous HTTP request
        $promise = $client->request($request);

        // Client::request() is asynchronous! It doesn't return a response. Instead, it returns a promise to resolve the
        // response at some point in the future when we've received the headers of the response. Here we use yield which
        // pauses the execution of the current coroutine until the promise resolves. Amp will automatically continue the
        // coroutine then.
        /** @var Response $response */
        $response = yield $promise;

        dumpRequestTrace($response->getRequest());
        dumpResponseTrace($response);

        dumpResponseBodyPreview(yield $response->getBody()->buffer());
    } catch (HttpException $error) {
        // If something goes wrong Amp will throw the exception where the promise was yielded.
        // The HttpClient::request() method itself will never throw directly, but returns a promise.
        echo $error;
    }
});