Client.php

<?php
/*
 * This file is part of the Fritz Payment JSON RPC package.
 *
 * (c) Fritz Payment GmbH <info@fritz-payment.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace FritzPayment\JsonRpc;
use FritzPayment\JsonRpc\Rpc\Codec;
use FritzPayment\JsonRpc\Client\Transport;
use FritzPayment\JsonRpc\Request;
use FritzPayment\JsonRpc\Response;
use FritzPayment\JsonRpc\Exception\ClientException;
use FritzPayment\JsonRpc\Exception\CodecException;
use FritzPayment\JsonRpc\Exception\TransportException;

class Client
{
    /**
     * @var string
     */
    protected $url;
    /**
     * @var Rpc\Codec
     */
    protected $codec;
    /**
     * @var Client\Transport
     */
    protected $transport;

    public function __construct($url, Codec $codec, Transport $transport) {
        $this->url       = $url;
        $this->codec     = $codec;
        $this->transport = $transport;
        if (!$this->transport->setUrl($this->url)) {
            throw new ClientException('Error setting URL for transport.');
        }
    }

    /**
     * @return Request
     */
    public function newRequest() {
        return $this->codec->getRequest();
    }

    /**
     * @param Request $request
     *
     * @return bool|Response
     * @throws Exception\CodecException
     * @throws Exception\TransportException
     */
    public function exec(Request $request) {
        if (!$this->codec->isCodecRequest($request)) {
            throw new CodecException('Invalid request. Codec cannot handle request object.');
        }
        try {
            $responseBody = $this->transport->send($request);
        } catch (\Exception $e) {
            $ex = new TransportException('Error sending request.', 0, $e);
            throw $ex;
        }
        if ($responseBody === false) {
            return false;
        }
        $response = $this->codec->getResponse();
        $response->setRequest($request)
            ->setResponseBody($responseBody)
            ->parseResponse();
        return $response;
    }
}