def get_client_info(client_id):
    """Get the status of a perticular client, as to he/she is connected or not
    
    @param client_id: ID of client user
    @return JSON object {
        "driver_status": webdriver status
        "is_alive": if driver is active or not
        "is_logged_in": if user is logged in or not
        "is_timer": if timer is running or not
    }
    """
    if client_id not in drivers:
        return None

    driver_status = drivers[client_id].get_status()
    is_alive = False
    is_logged_in = False
    if (driver_status == WhatsAPIDriverStatus.NotLoggedIn
        or driver_status == WhatsAPIDriverStatus.LoggedIn):
        is_alive = True
    if driver_status == WhatsAPIDriverStatus.LoggedIn:
        is_logged_in = True
    
    return {
        "is_alive": is_alive,
        "is_logged_in": is_logged_in,
        "is_timer": bool(timers[client_id]) and timers[client_id].is_running
    }