<?php
/* --------------------------------------------------------------
   AutoUpdaterCurlClient.inc.php 2018-09-27
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2018 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

/**
 * Class AutoUpdaterCurlClient
 */
class AutoUpdaterCurlClient
{
	/**
	 * @var string
	 */
	private $responseContent;
	
	/**
	 * @var array
	 */
	private $responseInformation;
	
	
	/**
	 * Executes a get request with curl.
	 *
	 * @param string $url
	 * @param array  $options
	 */
	public function executeGet($url, $options = [])
	{
		$options = $options + [
				CURLOPT_URL            => $url,
				CURLOPT_CONNECTTIMEOUT => isset($options[CURLOPT_CONNECTTIMEOUT]) ? $options[CURLOPT_CONNECTTIMEOUT] : 10,
				CURLOPT_RETURNTRANSFER => isset($options[CURLOPT_RETURNTRANSFER]) ? $options[CURLOPT_RETURNTRANSFER] : true,
			];
		
		$curlHandle = curl_init();
		curl_setopt_array($curlHandle, $options);
		$this->responseContent     = curl_exec($curlHandle);
		$this->responseInformation = curl_getinfo($curlHandle);
		curl_close($curlHandle);
	}
	
	
	/**
	 * Executes a post request with curl.
	 *
	 * @param string $url
	 * @param array  $data
	 * @param array  $options
	 */
	public function executePost($url, $data = [], $options = [])
	{
		$options = $options + [
				CURLOPT_URL            => $url,
				CURLOPT_POST           => true,
				CURLOPT_POSTFIELDS     => $data,
				CURLOPT_CONNECTTIMEOUT => isset($options[CURLOPT_CONNECTTIMEOUT]) ? $options[CURLOPT_CONNECTTIMEOUT] : 10,
				CURLOPT_RETURNTRANSFER => isset($options[CURLOPT_RETURNTRANSFER]) ? $options[CURLOPT_RETURNTRANSFER] : true,
			];
		
		$curlHandle = curl_init();
		curl_setopt_array($curlHandle, $options);
		$this->responseContent     = curl_exec($curlHandle);
		$this->responseInformation = curl_getinfo($curlHandle);
		curl_close($curlHandle);
	}
	
	
	/**
	 * Executes a head request with curl.
	 *
	 * @param string $url
	 * @param array  $options
	 */
	public function executeHead($url, $options = [])
	{
		$options = $options + [
				CURLOPT_URL            => $url,
				CURLOPT_NOBODY         => true,
				CURLOPT_CONNECTTIMEOUT => isset($options[CURLOPT_CONNECTTIMEOUT]) ? $options[CURLOPT_CONNECTTIMEOUT] : 10,
				CURLOPT_RETURNTRANSFER => isset($options[CURLOPT_RETURNTRANSFER]) ? $options[CURLOPT_RETURNTRANSFER] : true,
			];
		
		$curlHandle = curl_init();
		curl_setopt_array($curlHandle, $options);
		curl_exec($curlHandle);
		$this->responseContent     = null;
		$this->responseInformation = curl_getinfo($curlHandle);
		curl_close($curlHandle);
	}
	
	
	/**
	 * Returns the content of the curl response.
	 *
	 * @return string|null
	 */
	public function getContent()
	{
		if(isset($this->responseContent))
		{
			return $this->responseContent;
		}
		
		return null;
	}
	
	
	/**
	 * Returns the status code of the curl response.
	 *
	 * @return int|null
	 */
	public function getStatusCode()
	{
		if(isset($this->responseInformation['http_code']))
		{
			return $this->responseInformation['http_code'];
		}
		
		return null;
	}
	
	
	/**
	 * Returns the content type of the curl response.
	 *
	 * @return string|null
	 */
	public function getContentType()
	{
		if(isset($this->responseInformation['content_type']))
		{
			return $this->responseInformation['content_type'];
		}
		
		return null;
	}
	
	
	/**
	 * Returns all or a specific information of the curl response.
	 *
	 * @param string|null $key
	 *
	 * @return array|mixed|null
	 */
	public function getInformation($key = null)
	{
		if($key === null && isset($this->responseInformation))
		{
			return $this->responseInformation;
		}
		elseif($key !== null && isset($this->responseInformation[$key]))
		{
			return $this->responseInformation[$key];
		}
		
		return null;
	}
}