FacebookBridge - make a huge fuss if we can't create a valid Facebookclient

plugins/FacebookBridge/lib/facebookclient.php

@@ -51,6 +51,13 @@ class Facebookclient
     function __construct($notice)
     {
         $this->facebook = self::getFacebook();
+
+        if (empty($this->facebook)) {
+            throw new FacebookApiException(
+                "Could not create Facebook client! Bad application ID or secret?"
+            );
+        }
+
         $this->notice = $notice;
 
         $this->flink = Foreign_link::getByUserID(
@@ -89,6 +96,22 @@ class Facebookclient
             $secret = common_config('facebook', 'global_secret');
         }
 
+        if (empty($appId)) {
+            common_log(
+                LOG_WARNING,
+                "Couldn't find Facebook application ID!",
+                __FILE__
+            );
+        }
+
+        if (empty($secret)) {
+            common_log(
+                LOG_WARNING,
+                "Couldn't find Facebook application ID!",
+                __FILE__
+            );
+        }
+
         return new Facebook(
             array(
                'appId'  => $appId,