Migrate RainLoop Webmail to use Facebook Graph API instead of FQL

rainloop/v/0.0.0/app/libraries/GuzzleHttp/Adapter/MockAdapter.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace GuzzleHttp\Adapter;
+
+use GuzzleHttp\Event\RequestEvents;
+use GuzzleHttp\Message\ResponseInterface;
+
+/**
+ * Adapter that can be used to associate mock responses with a transaction
+ * while still emulating the event workflow of real adapters.
+ */
+class MockAdapter implements AdapterInterface
+{
+    private $response;
+
+    /**
+     * @param ResponseInterface|callable $response Response to serve or function
+     *     to invoke that handles a transaction
+     */
+    public function __construct($response = null)
+    {
+        $this->setResponse($response);
+    }
+
+    /**
+     * Set the response that will be served by the adapter
+     *
+     * @param ResponseInterface|callable $response Response to serve or
+     *     function to invoke that handles a transaction
+     */
+    public function setResponse($response)
+    {
+        $this->response = $response;
+    }
+
+    public function send(TransactionInterface $transaction)
+    {
+        RequestEvents::emitBefore($transaction);
+        if (!$transaction->getResponse()) {
+
+            // Read the request body if it is present
+            if ($transaction->getRequest()->getBody()) {
+                $transaction->getRequest()->getBody()->__toString();
+            }
+
+            $response = is_callable($this->response)
+                ? call_user_func($this->response, $transaction)
+                : $this->response;
+            if (!$response instanceof ResponseInterface) {
+                throw new \RuntimeException('Invalid mocked response');
+            }
+
+            $transaction->setResponse($response);
+            RequestEvents::emitHeaders($transaction);
+            RequestEvents::emitComplete($transaction);
+        }
+
+        return $transaction->getResponse();
+    }
+}