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