<?php

use GuzzleHttp\Client;
use GuzzleHttp\Exception\ClientException;
use Phly\Http\ServerRequestFactory;
use Phly\Http\ServerRequest;
use Phly\Http\Response;

require __DIR__.'/vendor/autoload.php';

/**
 * Sends an HTTP response.
 *
 * @param Response $response
 */
function sendResponse(Response $response)
{
    http_response_code($response->getStatusCode());

    foreach ($response->getHeaders() as $header => $values) {
        header(sprintf('%s: %s'."\n", $header, implode(', ', $values)));
    }

    echo $response->getBody();
}

/**
 * Does a request to the API of Bittrex.
 *
 * @param ServerRequest $request
 * @param Client        $client
 *
 * @return \GuzzleHttp\Psr7\Response
 */
function doRequest(ServerRequest $request, Client $client)
{
    $headers = [];

    foreach ($request->getHeaders() as $name => $value) {
        $headers[$name] = $value[0];
    }

    $serverParams = $request->getServerParams();
    $url = sprintf('https://gitnet.fr%s', $serverParams['PATH_INFO'] ?? $serverParams['REQUEST_URI']);

    unset($headers['host']);

    return $client->request(
        $request->getMethod(),
        $url,
        [
            'headers' => $headers,
            'body' => $request->getBody(),
        ]
    );
}

try {
    $apiResponse = doRequest(
        ServerRequestFactory::fromGlobals(),
        new Client()
    );
} catch (ClientException $e) {
    $apiResponse = $e->getResponse();
}

return sendResponse(new Response(
    $apiResponse->getBody(),
    $apiResponse->getStatusCode(),
    $apiResponse->getHeaders()
));