<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Oauth
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/

/** Zend_Http_Client */
#require_once 'Zend/Http/Client.php';

/**
* @category Zend
* @package Zend_Oauth
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Oauth
{
const REQUEST_SCHEME_HEADER = 'header';
const REQUEST_SCHEME_POSTBODY = 'postbody';
const REQUEST_SCHEME_QUERYSTRING = 'querystring';
const GET = 'GET';
const POST = 'POST';
const PUT = 'PUT';
const DELETE = 'DELETE';
const HEAD = 'HEAD';
const OPTIONS = 'OPTIONS';

/**
* Singleton instance if required of the HTTP client
*
* @var Zend_Http_Client
*/
protected static $httpClient = null;

/**
* Allows the external environment to make Zend_Oauth use a specific
* Client instance.
*
* @param Zend_Http_Client $httpClient
* @return void
*/
public static function setHttpClient(Zend_Http_Client $httpClient)
{
self::$httpClient = $httpClient;
}

/**
* Return the singleton instance of the HTTP Client. Note that
* the instance is reset and cleared of previous parameters and
* Authorization header values.
*
* @return Zend_Http_Client
*/
public static function getHttpClient()
{
if (!isset(self::$httpClient)) {
self::$httpClient = new Zend_Http_Client;
} else {
self::$httpClient->setHeaders('Authorization', null);
self::$httpClient->resetParameters();
}
return self::$httpClient;
}

/**
* Simple mechanism to delete the entire singleton HTTP Client instance
* which forces an new instantiation for subsequent requests.
*
* @return void
*/
public static function clearHttpClient()
{
self::$httpClient = null;
}
}