* Facebook support

1 files changed, 250 insertions, 0 deletions

diff --git a/lib/facebook-graph-sdk/src/Facebook/FacebookClient.php b/lib/facebook-graph-sdk/src/Facebook/FacebookClient.php
new file mode 100644
index 0000000..b10762f
--- /dev/null
+++ b/lib/facebook-graph-sdk/src/Facebook/FacebookClient.php
@@ -0,0 +1,250 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\HttpClients\FacebookHttpClientInterface;
+use Facebook\HttpClients\FacebookCurlHttpClient;
+use Facebook\HttpClients\FacebookStreamHttpClient;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookClient
+ *
+ * @package Facebook
+ */
+class FacebookClient
+{
+    /**
+     * @const string Production Graph API URL.
+     */
+    const BASE_GRAPH_URL = 'https://graph.facebook.com';
+
+    /**
+     * @const string Graph API URL for video uploads.
+     */
+    const BASE_GRAPH_VIDEO_URL = 'https://graph-video.facebook.com';
+
+    /**
+     * @const string Beta Graph API URL.
+     */
+    const BASE_GRAPH_URL_BETA = 'https://graph.beta.facebook.com';
+
+    /**
+     * @const string Beta Graph API URL for video uploads.
+     */
+    const BASE_GRAPH_VIDEO_URL_BETA = 'https://graph-video.beta.facebook.com';
+
+    /**
+     * @const int The timeout in seconds for a normal request.
+     */
+    const DEFAULT_REQUEST_TIMEOUT = 60;
+
+    /**
+     * @const int The timeout in seconds for a request that contains file uploads.
+     */
+    const DEFAULT_FILE_UPLOAD_REQUEST_TIMEOUT = 3600;
+
+    /**
+     * @const int The timeout in seconds for a request that contains video uploads.
+     */
+    const DEFAULT_VIDEO_UPLOAD_REQUEST_TIMEOUT = 7200;
+
+    /**
+     * @var bool Toggle to use Graph beta url.
+     */
+    protected $enableBetaMode = false;
+
+    /**
+     * @var FacebookHttpClientInterface HTTP client handler.
+     */
+    protected $httpClientHandler;
+
+    /**
+     * @var int The number of calls that have been made to Graph.
+     */
+    public static $requestCount = 0;
+
+    /**
+     * Instantiates a new FacebookClient object.
+     *
+     * @param FacebookHttpClientInterface|null $httpClientHandler
+     * @param boolean                          $enableBeta
+     */
+    public function __construct(FacebookHttpClientInterface $httpClientHandler = null, $enableBeta = false)
+    {
+        $this->httpClientHandler = $httpClientHandler ?: $this->detectHttpClientHandler();
+        $this->enableBetaMode = $enableBeta;
+    }
+
+    /**
+     * Sets the HTTP client handler.
+     *
+     * @param FacebookHttpClientInterface $httpClientHandler
+     */
+    public function setHttpClientHandler(FacebookHttpClientInterface $httpClientHandler)
+    {
+        $this->httpClientHandler = $httpClientHandler;
+    }
+
+    /**
+     * Returns the HTTP client handler.
+     *
+     * @return FacebookHttpClientInterface
+     */
+    public function getHttpClientHandler()
+    {
+        return $this->httpClientHandler;
+    }
+
+    /**
+     * Detects which HTTP client handler to use.
+     *
+     * @return FacebookHttpClientInterface
+     */
+    public function detectHttpClientHandler()
+    {
+        return function_exists('curl_init') ? new FacebookCurlHttpClient() : new FacebookStreamHttpClient();
+    }
+
+    /**
+     * Toggle beta mode.
+     *
+     * @param boolean $betaMode
+     */
+    public function enableBetaMode($betaMode = true)
+    {
+        $this->enableBetaMode = $betaMode;
+    }
+
+    /**
+     * Returns the base Graph URL.
+     *
+     * @param boolean $postToVideoUrl Post to the video API if videos are being uploaded.
+     *
+     * @return string
+     */
+    public function getBaseGraphUrl($postToVideoUrl = false)
+    {
+        if ($postToVideoUrl) {
+            return $this->enableBetaMode ? static::BASE_GRAPH_VIDEO_URL_BETA : static::BASE_GRAPH_VIDEO_URL;
+        }
+
+        return $this->enableBetaMode ? static::BASE_GRAPH_URL_BETA : static::BASE_GRAPH_URL;
+    }
+
+    /**
+     * Prepares the request for sending to the client handler.
+     *
+     * @param FacebookRequest $request
+     *
+     * @return array
+     */
+    public function prepareRequestMessage(FacebookRequest $request)
+    {
+        $postToVideoUrl = $request->containsVideoUploads();
+        $url = $this->getBaseGraphUrl($postToVideoUrl) . $request->getUrl();
+
+        // If we're sending files they should be sent as multipart/form-data
+        if ($request->containsFileUploads()) {
+            $requestBody = $request->getMultipartBody();
+            $request->setHeaders([
+                'Content-Type' => 'multipart/form-data; boundary=' . $requestBody->getBoundary(),
+            ]);
+        } else {
+            $requestBody = $request->getUrlEncodedBody();
+            $request->setHeaders([
+                'Content-Type' => 'application/x-www-form-urlencoded',
+            ]);
+        }
+
+        return [
+            $url,
+            $request->getMethod(),
+            $request->getHeaders(),
+            $requestBody->getBody(),
+        ];
+    }
+
+    /**
+     * Makes the request to Graph and returns the result.
+     *
+     * @param FacebookRequest $request
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function sendRequest(FacebookRequest $request)
+    {
+        if (get_class($request) === 'FacebookRequest') {
+            $request->validateAccessToken();
+        }
+
+        list($url, $method, $headers, $body) = $this->prepareRequestMessage($request);
+
+        // Since file uploads can take a while, we need to give more time for uploads
+        $timeOut = static::DEFAULT_REQUEST_TIMEOUT;
+        if ($request->containsFileUploads()) {
+            $timeOut = static::DEFAULT_FILE_UPLOAD_REQUEST_TIMEOUT;
+        } elseif ($request->containsVideoUploads()) {
+            $timeOut = static::DEFAULT_VIDEO_UPLOAD_REQUEST_TIMEOUT;
+        }
+
+        // Should throw `FacebookSDKException` exception on HTTP client error.
+        // Don't catch to allow it to bubble up.
+        $rawResponse = $this->httpClientHandler->send($url, $method, $body, $headers, $timeOut);
+
+        static::$requestCount++;
+
+        $returnResponse = new FacebookResponse(
+            $request,
+            $rawResponse->getBody(),
+            $rawResponse->getHttpResponseCode(),
+            $rawResponse->getHeaders()
+        );
+
+        if ($returnResponse->isError()) {
+            throw $returnResponse->getThrownException();
+        }
+
+        return $returnResponse;
+    }
+
+    /**
+     * Makes a batched request to Graph and returns the result.
+     *
+     * @param FacebookBatchRequest $request
+     *
+     * @return FacebookBatchResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function sendBatchRequest(FacebookBatchRequest $request)
+    {
+        $request->prepareRequestsForBatch();
+        $facebookResponse = $this->sendRequest($request);
+
+        return new FacebookBatchResponse($request, $facebookResponse);
+    }
+}