From 028a02bdb7a872460ee168c5b772ae3444b51433 Mon Sep 17 00:00:00 2001
From: adrian7 <adrian.silimon@yahoo.com>
Date: Mon, 2 Oct 2017 21:36:32 +0300
Subject: [PATCH] support for setting custom persistent data handler

---
 src/API/Facebook/App.php                 | 26 +++++++++++++++++++-----
 src/API/Facebook/GraphAccessProvider.php |  9 +++++---
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/src/API/Facebook/App.php b/src/API/Facebook/App.php
index 43fdd24..49c73f6 100644
--- a/src/API/Facebook/App.php
+++ b/src/API/Facebook/App.php
@@ -7,6 +7,7 @@
 
 namespace DevLib\API\Facebook;
 
+use Facebook\Facebook;
 use Facebook\Authentication\OAuth2Client;
 use Facebook\Exceptions\FacebookSDKException;
 use Facebook\Exceptions\FacebookResponseException;
@@ -50,12 +51,13 @@ class App{
     protected $provider;
 
     /**
-     * FB Login Constructor.
+     * FB App Constructor.
      *
      * @param $appId
      * @param $appSecret
      * @param $callbackURL
      * @param array $permissions
+     * @param null $persistentDataHandler
      * @param string $defaultGraphVersion
      */
     public function __construct(
@@ -63,17 +65,23 @@ public function __construct(
         $appSecret,
         $callbackURL,
         $permissions=['id', 'email'],
-        $defaultGraphVersion='v2.10'
+        $persistentDataHandler=NULL,
+        $defaultGraphVersion='latest'
     ) {
 
         $this->appId               = $appId;
         $this->callbackUrl         = $callbackURL;
 
+        $defaultGraphVersion = ( 'latest' == $defaultGraphVersion ) ?
+            Facebook::DEFAULT_GRAPH_VERSION :
+            $defaultGraphVersion;
+
         //init provider
         $this->provider = GraphAccessProvider::getInstance([
-            'app_id'                => $appId,
-            'app_secret'            => $appSecret,
-            'default_graph_version' => $defaultGraphVersion
+            'app_id'                    => $appId,
+            'app_secret'                => $appSecret,
+            'persistent_data_handler'   => $persistentDataHandler,
+            'default_graph_version'     => $defaultGraphVersion
         ]);
 
         //init redirect helper
@@ -84,6 +92,14 @@ public function __construct(
 
     }
 
+    public static function create(){
+        //TODO Allow creation using static
+    }
+
+    public static function withGraphAccessProvider(GraphAccessProvider $provider){
+        //TODO
+    }
+
     /**
      * @param $message
      * @param string $type
diff --git a/src/API/Facebook/GraphAccessProvider.php b/src/API/Facebook/GraphAccessProvider.php
index 3bdfdac..f8c493b 100644
--- a/src/API/Facebook/GraphAccessProvider.php
+++ b/src/API/Facebook/GraphAccessProvider.php
@@ -69,15 +69,18 @@ protected function __construct(Facebook $facebook) {
     /**
      * Retrieve a graph access provider instance
      * @param array $params
+     * @param null|string $instanceId
      *
-     * @return GraphAccessProvider
+     * @return mixed
      */
-    public static function getInstance(array $params){
+    public static function getInstance(array $params, $instanceId=NULL){
 
         if( ! isset($params['app_id']) or ! isset($params['app_secret']) )
             throw new \InvalidArgumentException("Missing app_id or app_secret from input params... .");
 
-        $instanceId = substr(strval($params['app_id']), 0, 7);
+        $instanceId = empty($instanceId) ?
+            substr( strval($params['app_id']), 0, 7 ) :
+            $instanceId;
 
         if( ! isset( self::$instances[$instanceId] ) ){