/**
* Connect facebook user
* Uses Facebook api to determine login state.
* Retrieve and set user data and permissions.
*
* @return boolean
*/
public function connect()
{
$uid = $this->FacebookApi->getUser();
$accessToken = $this->FacebookApi->getAccessToken();
// check if accessToken has changed (e.g. after requesting/revoking permissions)
if ($this->_accessToken !== $accessToken) {
// reset without destroying the facebook session
$this->disconnect(false);
}
if ($uid && $this->user) {
// connected and active session
// we are all set. just return the cached user data.
// Check UserIds
if ($uid === $this->user['id']) {
return true;
}
// UserIds do not match
// reset without destroying the facebook session
// and update user info
$this->disconnect(false);
$this->log(__d('facebook', 'UserIds do not match. Expected: %s / Actual: %s. Disconnect.', $this->user['id'], $uid), 'warning');
} elseif (!$uid && $this->user) {
// not connected but active session
// reset the session
$this->log(__d('facebook', 'User with ID %s is not connected but has active session. Disconnect.', $uid), 'info');
$this->disconnect(true);
return false;
} elseif (!$uid) {
// not connected
return false;
}
//@todo confirm identity/verify access token
//@see https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow/#confirm
// connected but not in session
// retrieve data from facebook
$this->updateUserInfo();
$this->log(__d('facebook', 'Connected user with ID %s', $uid), 'info');
//@todo dispatch event facebook.connect
return true;
}
