How to check whether user is admin after click"continue as" - php

Question

I am creating a facebook quiz, but i had stuck with the following problem a couple of days. When user starts the game and after click "continue as" (the screen where facebook asks to get a couple of users information) i want to check whether that user who enters in the game is admin or not. So far, when user allow to share his informations, he enters in the game as user. I've tried a couple of different solutions, i have tried with sending a couple of different api's, i have read a tons of examples but so far i don't have any luck. At developers.facebook.com where my app is i have set the manage_pages and my user profile is select as a "administrator". This is my login.php script (the commented out code are my checked solutions). Any help will be much appreciated.
<?php
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
include_once ('fb_sdk/src/Facebook/autoload.php');
$fb = new Facebook\Facebook([
'app_id' => '*******',
'app_secret' => '*******',
'default_graph_version' => 'v2.8',
]);
$helper = $fb->getCanvasHelper();
try {
if (isset($_SESSION['facebook_access_token'])) {
$accessToken = $_SESSION['facebook_access_token'];
} else {
$accessToken = $helper->getAccessToken();
}
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (isset($accessToken)) {
if (isset($_SESSION['facebook_access_token'])) {
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
} else {
$_SESSION['facebook_access_token'] = (string) $accessToken;
// OAuth 2.0 client handler
$oAuth2Client = $fb->getOAuth2Client();
// Exchanges a short-lived access token for a long-lived one
$longLivedAccessToken = $oAuth2Client->getLongLivedAccessToken($_SESSION['facebook_access_token']);
$_SESSION['facebook_access_token'] = (string) $longLivedAccessToken;
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
// validating the access token
/*try {
$request = $fb->get('/me');
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
if ($e->getCode() == 190) {
unset($_SESSION['facebook_access_token']);
$helper = $fb->getRedirectLoginHelper();
$loginUrl = $helper->getLoginUrl('https://apps.facebook.com/facebookquiz/', $permissions);
echo "<script>window.top.location.href='".$loginUrl."'</script>";
exit;
}
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}*/
// getting basic info about user
try {
$profile_request = $fb->get('/me?fields=first_name, last_name, email');
$profile = $profile_request->getGraphNode()->asArray();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
unset($_SESSION['facebook_access_token']);
echo "<script>window.top.location.href='https://apps.facebook.com/facebookquiz/'</script>";
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
// priting basic info about user on the screen
$first_name = $profile['first_name'];
$last_name = $profile['last_name'];
$email = $profile['email'];
$fbUserId = $profile['id'];
print_r ($profile);
include_once('database/dbInsert.inc');
include_once('database/db_select.inc');
$fbUser = getUserByFBID($fbUserId);
if($fbUser == false){
$userID = insertUserInfo($fbUserId,$first_name, $last_name, $email);
$_SESSION['user_id'] = $userID;
}else{
$_SESSION['user_id'] = $fbUser->Id;
}
header("Location: index.php");
//redirect if is administrator
} else {
$helper = $fb->getRedirectLoginHelper();
$permissions = ['email', 'public_profile', 'publish_actions', 'manage_pages']; // optionnal 'user_managed_groups'
$loginUrl = $helper->getLoginUrl('https://apps.facebook.com/facebookquiz/login.php', $permissions);
echo "<script>window.top.location.href='".$loginUrl."'</script>";
}
?><?php
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
include_once ('fb_sdk/src/Facebook/autoload.php');
$fb = new Facebook\Facebook([
'app_id' => 'app-if',
'app_secret' => 'app-secret',
'default_graph_version' => 'v2.8',
]);
$helper = $fb->getCanvasHelper();
try {
if (isset($_SESSION['facebook_access_token'])) {
$accessToken = $_SESSION['facebook_access_token'];
} else {
$accessToken = $helper->getAccessToken();
}
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (isset($accessToken)) {
if (isset($_SESSION['facebook_access_token'])) {
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
} else {
$_SESSION['facebook_access_token'] = (string) $accessToken;
// OAuth 2.0 client handler
$oAuth2Client = $fb->getOAuth2Client();
// Exchanges a short-lived access token for a long-lived one
$longLivedAccessToken = $oAuth2Client->getLongLivedAccessToken($_SESSION['facebook_access_token']);
$_SESSION['facebook_access_token'] = (string) $longLivedAccessToken;
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
// validating the access token
/*try {
$request = $fb->get('/me');
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
if ($e->getCode() == 190) {
unset($_SESSION['facebook_access_token']);
$helper = $fb->getRedirectLoginHelper();
$loginUrl = $helper->getLoginUrl('https://apps.facebook.com/facebookquiz/', $permissions);
echo "<script>window.top.location.href='".$loginUrl."'</script>";
exit;
}
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}*/
// getting basic info about user
try {
$profile_request = $fb->get('/me?fields=first_name, last_name, email');
$profile = $profile_request->getGraphNode()->asArray();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
unset($_SESSION['facebook_access_token']);
echo "<script>window.top.location.href='https://apps.facebook.com/facebookquiz/'</script>";
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
// priting basic info about user on the screen
$first_name = $profile['first_name'];
$last_name = $profile['last_name'];
$email = $profile['email'];
$fbUserId = $profile['id'];
print_r ($profile);
include_once('database/dbInsert.inc');
include_once('database/db_select.inc');
$fbUser = getUserByFBID($fbUserId);
if($fbUser == false){
$userID = insertUserInfo($fbUserId,$first_name, $last_name, $email);
$_SESSION['user_id'] = $userID;
}else{
$_SESSION['user_id'] = $fbUser->Id;
}
/*$getPages = (new Facebook\FacebookRequest(
$session,
'GET',
'/me/accounts'
))->execute()->getGraphObject()->asArray();
$pageID = $getPages['data'][0]->id;
$pageAccessToken = $getPages['data'][0]->accessToken;
(new FacebookRequest(
$session,
'POST',
'/' . $pageID . '/feed',
array(
'accessToken' => $pageAccessToken;
'message' => 'Facebook app';
)
))->execute();*/
//foreach ($getPages['data'] as $key) {
//print_r($getPages);
/*echo $key->id;
echo "<br>";
echo $key->name;
echo "<br>";*/
//}
/*$response = $request->execute();
$graphObject = $response->getGraphObject();*/
/*$request = new FacebookRequest(
$_SESSION,
'POST',
'/883093058488924/roles',
array (
'user' => '123456789',
'role' => 'administrators',
)
);
$response = $request->execute();
$graphObject = $response->getGraphObject();
var_dump($graphObject);*/
header("Location: index.php");
//redirect if is administrator
// Now you can redirect to another page and use the access token from $_SESSION['facebook_access_token']
} else {
$helper = $fb->getRedirectLoginHelper();
$permissions = ['email', 'public_profile', 'publish_actions', 'manage_pages']; // optionnal 'user_managed_groups'
$loginUrl = $helper->getLoginUrl('https://apps.facebook.com/facebookquiz/login.php', $permissions);
echo "<script>window.top.location.href='".$loginUrl."'</script>";
}
?>