Facebook.php
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<?php
/**
* Note: If there is an inconsistent error
* it's due to how I changed the FB load
* process, may need to change how JS is loaded
* Proabably move FB.init and FB.Event.subscribe
* to my init method
*
* This needs to go in the <html tag
* xmlns:fb="http://www.facebook.com/2008/fbml"
*
* http://wpdev.tenzinghost.com
* API Key: 83f54e078b9aa0e303bba959dc0a566f
* App Secret: e542aca35ab698121fa5917211013a41
* App ID: 105917066126941
*
* http://wp.cb
* API Key: 3bcccfd8c28c52197141266d9e417649
* App Secret: 9bfcd828bc6ccef12336dea57df93ecb
* App ID: 138943536118944
*
* Graph API Reference:
* http://developers.facebook.com/docs/reference/api/user
*/
namespace Tz\WordPress\Tools\Auth\Facebook;
use Tz\WordPress\Tools;
use Tz\WordPress\Tools\Auth;
use FB;
use InvalidArgumentException;
const OPTION_NAME = 'tz_auth_fb';
call_user_func(function() {
Vars::$options = new Tools\WP_Option(OPTION_NAME, Array('button_title' => 'Login'));
Tools\add_actions(__NAMESPACE__ . '\Actions');
Tools\add_shortcodes(__NAMESPACE__ . '\ShortCodes');
if (is_admin()) {
require_once(__DIR__ . DIRECTORY_SEPARATOR . 'Settings.php');
}
});
/**
* Generates markup for a Facebook Login button
* @param {Boolean} $echo TRUE to echo the button, false to return a string
* @returns NULL|String
*/
function drawLoginButton($echo = true) {
$title = Vars::$options['button_title'] ?: 'Login';
$btn = '<a id="TzFB" class="fb_button fb_button_medium"><span class="fb_button_text">' . $title . '</span></a>';
if (!$echo) {
return $btn;
}
echo $btn;
}
// This might need some work...what happens if the object fails?
function getSDK() {
static $instance = false;
if (false === $instance) {
require_once(__DIR__ . DIRECTORY_SEPARATOR . 'facebook-sdk.php');
$instance = new FB\Facebook(Array(
'appId' => Vars::$options['application_id']
, 'secret' => Vars::$options['application_secret']
, 'cookie' => true
));
}
return $instance;
}
/*
* Logic for all these methods needs to be re-thought out
* Should only load FB stuff when something happens (decide)
* 1) drawLoginButton() has been called
* 2) User is on the login_page
* 3) Some other clever way of deciding if FB stuff should load
*/
class Actions {
/**
* Logs the user in to WP if they logged into FB
* @global $post
*/
public static function wp() {
global $post; // I want a better way to do this
if ($post->ID == Auth\Vars::$options['login_page'] && !is_user_logged_in()) {
$sdk = getSDK();
if ($sdk->getSession()) {
$info = $sdk->api('/me');
// get email, verify vs database
// register and/or login
}
}
}
/**
* Load the Facebook scripts for login
*/
public static function wp_enqueue_scripts() {
if (is_admin() || is_user_logged_in()) {
return;
}
_enqueue_script('facebook-all', 'http://connect.facebook.net/en_US/all.js');
_enqueue_script('tz-facebook', Tools\url('tz-facebook.js', __FILE__), Array('addEvent'));
_localize_script('tz-facebook', 'TzFBData', Array('AppID' => Vars::$options['application_id'], 'ext_perms' => implode(',', array_keys(Vars::$options['ext_perms']))));
}
/**
* Creates the anchor needed for Facebook scripts
*/
public static function get_footer() {
echo '<div id="fb-root"></div>';
}
/**
* Destroy Facebook session data on site if the log out of WordPress
*/
public static function wp_logout() {
$sdk = getSDK();
$sdk->setSession(); // I think this is how you log them out of Facebook
}
}
class ShortCodes {
public static function fb_login_button() {
if (is_user_logged_in()) {
return '';
}
$sdk = getSDK();
if ($sdk->getSession()) {
ob_start();
print_r($sdk->api('/me'));
$data = '<pre>' . ob_get_contents() . '</pre>';
ob_end_clean();
return $data;
} else {
return drawLoginButton(false);
}
}
}
class Vars {
/**
* WordPress option for this module
* @type WP_Option
*/
public static $options;
}
?>