<?php
  /**
   * PHP OpenCloud library.
   * 
   * @copyright 2014 Rackspace Hosting, Inc. See LICENSE for information.
   * @license   https://www.apache.org/licenses/LICENSE-2.0
   * @author    Jamie Hannaford <jamie.hannaford@rackspace.com>
   */
  
  namespace OpenCloud\Common\Http;
  
  use Guzzle\Http\Client as GuzzleClient;
  use Guzzle\Http\Curl\CurlHandle;
  use Guzzle\Http\Curl\CurlVersion;
  use OpenCloud\Common\Exceptions\UnsupportedVersionError;
  
  /**
   * Base client object which handles HTTP transactions. Each service is based off of a Client which acts as a
   * centralized parent.
   */ 
  class Client extends GuzzleClient
  {
      const VERSION = '1.9.0';
      const MINIMUM_PHP_VERSION = '5.3.0';
  
      public function __construct($baseUrl = '', $config = null)
      {
          // @codeCoverageIgnoreStart
      	if (PHP_VERSION < self::MINIMUM_PHP_VERSION) {
      		throw new UnsupportedVersionError(sprintf(
                  'You must have PHP version >= %s installed.',
                  self::MINIMUM_PHP_VERSION
              ));
          }
          // @codeCoverageIgnoreEnd
  
          parent::__construct($baseUrl, $config);
      }
      
      public function getDefaultUserAgent()
      {
          return 'OpenCloud/' . self::VERSION
              . ' cURL/' . CurlVersion::getInstance()->get('version')
              . ' PHP/' . PHP_VERSION;
      }
  
      public function getUserAgent()
      {
          return $this->userAgent;
      }
      
  }