Facebook and Blitz+

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ThePict

(Posted 2013) [#1]

To help my game go viral and take over the planet (I sound like a megalomaniac) I'd like to give my users (now I sound like a drug dealer) the option to Share their recent victories on their Facebook page (with a link to my download page so their friends can check out my game too - ad infinitum).
Looking at the FB developer pages I found this.

<?php
  // Remember to copy files from the SDK's src/ directory to a
  // directory in your application on the server, such as php-sdk/
  require_once('php-sdk/facebook.php');

  $config = array(
    'appId' => 'YOUR_APP_ID',
    'secret' => 'YOUR_APP_SECRET',
  );

  $facebook = new Facebook($config);
  $user_id = $facebook->getUser();
?>
<html>
  <head></head>
  <body>

  <?php
    if($user_id) {

      // We have a user ID, so probably a logged in user.
      // If not, we'll get an exception, which we handle below.
      try {
        $ret_obj = $facebook->api('/me/feed', 'POST',
                                    array(
                                      'link' => 'www.example.com',
                                      'message' => 'Posting with the PHP SDK!'
                                 ));
        echo '<pre>Post ID: ' . $ret_obj['id'] . '</pre>';

        // Give the user a logout link 
        echo '<br /><a href="' . $facebook->getLogoutUrl() . '">logout</a>';
      } catch(FacebookApiException $e) {
        // If the user is logged out, you can have a 
        // user ID even though the access token is invalid.
        // In this case, we'll get an exception, so we'll
        // just ask the user to login again here.
        $login_url = $facebook->getLoginUrl( array(
                       'scope' => 'publish_stream'
                       )); 
        echo 'Please <a href="' . $login_url . '">login.</a>';
        error_log($e->getType());
        error_log($e->getMessage());
      }   
    } else {

      // No user, so print a link for the user to login
      // To post to a user's wall, we need publish_stream permission
      // We'll use the current URL as the redirect_uri, so we don't
      // need to specify it here.
      $login_url = $facebook->getLoginUrl( array( 'scope' => 'publish_stream' ) );
      echo 'Please <a href="' . $login_url . '">login.</a>';

    } 

  ?>      

  </body> 
</html>

I think this should be easy enough to translate into bb using some of the http functions and code available in the code archives.
Others among us must have tried this before, are there any pitfalls to watch out for?