function updateUserSettings()
{
    $request = \Slim\Slim::getInstance()->request();
    $data = json_decode($request->getBody());
    $response['success'] = false;

    $userDetails = getUserBySignature();
    $uid = $userDetails->uid;

    $user = $request->post('user_data');
    $firstName = $user['first_name'];
    $lastName = $user['last_name'];
    $password = $user['password'];
    $img = $user['profile_pic'];
    $update = array(
        'first_name' => $firstName,
        'last_name' => $lastName,
        'uid' => $uid;
    );

    $db = getDB();

    $sql="UPDATE users SET first_name = '?', last_name = '?' WHERE uid = ? ";
    $stmt = $db->prepare($sql);
    $stmt->execute(array_values($update));

/*
    if (!empty($password) && strlen($password) > 6) {
        $insert['pasword'] = $password;
        $sql.= ', password = ?';
    }
 let me copy a function here
    if (isset($img) && substr_count($img, ',') > 0) {

        $save_path = 'uploads/usersPic/';
        $img = md5(time()) . '.jpg';

        if (base64_to_jpeg($user['profile_pic'], $save_path . $img)) {//thats wrong
            $insert['profile_pic'] = $img;
            $sql.= ', profile_pic = ?';
        }
    }
    */


        // Log activity
        $log = array(
            'id_user' => $uid,
            'id_media' => NULL,
            'id_flow' => NULL,
            'description' => ' changed his Settings. ',
            'added_at' => date('Y-m-d H:i:s'),
        );
        logActivity($log);


        $db = null;
        $response['success'] = true;
        $response['message'] = 'Points saved';

        echo json_encode($response);

}