public static function getInstance($arg)
{
if (!self::$instance instanceof self) {
self::$instance = new self($arg);
}
return self::$instance;
}
/**
* Initializes Facebook Connect
*/
public static function init()
{
widget::add('foot', html::script(array('js/fbconnect.js', 'http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php/en_US')));
widget::add('foot', html::script_source("FB.init('" . FB::$config['api_key'] . "');"));
// Add logged in Facebook user id to session for easier access
if ($logged_in = FB::instance()->get_loggedin_user()) {
$_SESSION['fb_uid'] = $logged_in;
}
}
/**
* Facebook connect
*/
public function _facebook()
{
$this->tab_id = 'facebook';
// Only owner may view this for now
$owner = $this->user && $this->member->id == $this->user->id;
if (!$owner) {
url::redirect(url::user($this->member));
}
// Are we logged in Facebook?
$fb_uid = FB::instance()->get_loggedin_user();
$external_user = $fb_uid ? $this->member->find_external_by_id($fb_uid) : $this->member->find_external_by_provider(User_External_Model::PROVIDER_FACEBOOK);
// Did we do an action?
if (request::method() == 'post') {
// Connect accounts
if ($_POST['connect'] == User_External_Model::PROVIDER_FACEBOOK && $fb_uid) {
if (!$external_user->loaded() && $this->member->map_external($fb_uid, User_External_Model::PROVIDER_FACEBOOK)) {
// Map succesful
} else {
// Map failed
}
} else {
// Not connected or invalid post
}
url::redirect(url::user($this->member) . '/facebook');
}
$parameters = array();
if ($fb_uid) {
$parameters['fb_uid'] = $fb_uid;
}
if ($external_user->loaded) {
$parameters['external_user'] = $external_user;
}
widget::add('main', View::factory('member/facebook', $parameters));
$this->_side_views();
}
/**
* Attempt to login with 3rd party account
*
* @return bool
*/
public function external_login($provider)
{
if ($provider == Model_User_External::PROVIDER_FACEBOOK && ($fb_uid = FB::instance()->get_loggedin_user())) {
// Load the external user
$user = Model_User::find_user_by_external($fb_uid, $provider);
if ($user->loaded() && $this->complete_login($user)) {
$this->_session->set($this->_config['session_key'] . '_provider', $provider);
return true;
}
}
return false;
}
/**
* Log out a user by removing the related session variables.
*
* @param boolean $destroy completely destroy the session
* @return boolean
*/
public function logout($destroy = false)
{
// Delete the autologin cookie to prevent re-login
if (cookie::get($this->config['cookie_name'])) {
cookie::delete($this->config['cookie_name']);
}
// Logout 3rd party?
if (FB::enabled() && Visitor::instance()->get_provider()) {
$this->session->delete($this->config['session_key'] . '_provider');
try {
FB::instance()->expire_session();
} catch (Exception $e) {
}
}
// Destroy the session completely?
if ($destroy === true) {
$this->session->destroy();
} else {
// Remove the user from the session
$this->session->delete($this->config['session_key']);
// Regenerate session_id
$this->session->regenerate();
}
// Double check
return !$this->logged_in();
}