class CurlService

class CurlService implements CurlServiceInterface {
    
    /**
     * @var array
     */
    private $defaultOptions;
    
    /**
     * Constructor
     *
     * @param mixed $defaultOptions
     */
    public function __construct($defaultOptions = array()) {
        $this->defaultOptions = is_array($defaultOptions) ? $defaultOptions : array();
    }
    
    /**
     * {@inheritdoc}
     */
    public function execute($requestMethod, $url, $parameters = null, $extraOptions = array()) {
        $customHeaders = array(
            'Content-Type: application/json;charset=utf-8',
            'Accept: application/json',
        );
        $curl = curl_init($url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        switch ($requestMethod) {
            case 'GET':
                break;
            case 'POST':
                if ($parameters && is_array($parameters)) {
                    curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($parameters));
                }
                else {
                    curl_setopt($curl, CURLOPT_POSTFIELDS, "{}");
                    $customHeaders[] = 'Content-Length: 2';
                    // Suppress "Transfer-Encoding: chunked" header automatically added by cURL that
                    // causes a 400 bad request (bad content-length).
                    $customHeaders[] = 'Transfer-Encoding:';
                }
                // Suppress "Expect: 100-continue" header automatically added by cURL that
                // causes a 1 second delay if the remote server does not support Expect.
                $customHeaders[] = 'Expect:';
                curl_setopt($curl, CURLOPT_POST, true);
                break;
            case 'DELETE':
                curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'DELETE');
                break;
            case 'PUT':
                if ($parameters && is_array($parameters)) {
                    curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($parameters));
                }
                else {
                    curl_setopt($curl, CURLOPT_POSTFIELDS, "{}");
                    $customHeaders[] = 'Content-Length: 2';
                    // Suppress "Transfer-Encoding: chunked" header automatically added by cURL that
                    // causes a 400 bad request (bad content-length).
                    $customHeaders[] = 'Transfer-Encoding:';
                }
                // Suppress "Expect: 100-continue" header automatically added by cURL that
                // causes a 1 second delay if the remote server does not support Expect.
                $customHeaders[] = 'Expect:';
                curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');
                break;
        }
        foreach (array_replace($this->defaultOptions, $extraOptions) as $option => $value) {
            curl_setopt($curl, $option, $value);
        }
        curl_setopt($curl, CURLOPT_HTTPHEADER, $customHeaders);
        $rawResult = curl_exec($curl);
        $rawResult = is_string($rawResult) ? trim($rawResult) : '';
        $info = curl_getinfo($curl);
        $info['request_method'] = $requestMethod;
        $info['errno'] = curl_errno($curl);
        $info['error'] = curl_error($curl);
        if (array_key_exists(CURLOPT_FAILONERROR, $extraOptions) && $extraOptions[CURLOPT_FAILONERROR] && CURLE_GOT_NOTHING !== ($errno = curl_errno($curl)) && ($error = curl_error($curl))) {
            curl_close($curl);
            $e = new CurlExecException(sprintf("Curl error thrown for http %s to %s%s\n\n%s", $requestMethod, $url, $parameters && is_array($parameters) ? ' with params: ' . json_encode($parameters) : '', $error), $errno);
            $e->setCurlInfo($info);
            throw $e;
        }
        curl_close($curl);
        return array(
            $rawResult,
            $info,
        );
    }

}