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<?php
/**
* Copyright 2017 Facebook, Inc.
*
* You are hereby granted a non-exclusive, worldwide, royalty-free license to
* use, copy, modify, and distribute this software in source code or binary
* form for use in connection with the web services and APIs provided by
* Facebook.
*
* As with any software that integrates with the Facebook platform, your use
* of this software is subject to the Facebook Developer Principles and
* Policies [http://developers.facebook.com/policy/]. This copyright notice
* shall be included in all copies or substantial portions of the software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
namespace Facebook\Helpers;
use Facebook\FacebookApp;
use Facebook\FacebookClient;
/**
* Class FacebookPageTabHelper
*
* @package Facebook
*/
class FacebookPageTabHelper extends FacebookCanvasHelper
{
/**
* @var array|null
*/
protected $pageData;
/**
* Initialize the helper and process available signed request data.
*
* @param FacebookApp $app The FacebookApp entity.
* @param FacebookClient $client The client to make HTTP requests.
* @param string|null $graphVersion The version of Graph to use.
*/
public function __construct(FacebookApp $app, FacebookClient $client, $graphVersion = null)
{
parent::__construct($app, $client, $graphVersion);
if (!$this->signedRequest) {
return;
}
$this->pageData = $this->signedRequest->get('page');
}
/**
* Returns a value from the page data.
*
* @param string $key
* @param mixed|null $default
*
* @return mixed|null
*/
public function getPageData($key, $default = null)
{
if (isset($this->pageData[$key])) {
return $this->pageData[$key];
}
return $default;
}
/**
* Returns true if the user is an admin.
*
* @return boolean
*/
public function isAdmin()
{
return $this->getPageData('admin') === true;
}
/**
* Returns the page id if available.
*
* @return string|null
*/
public function getPageId()
{
return $this->getPageData('id');
}
}
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