/**
 * Get Input Labels
 * @param string $message_key
 * @return array
 */
function inputLabels(string $message_key):array
{
    $labels = [];
    foreach(array_keys(Core\Input::all()) as $name)
    {
        $dot_key = "{$message_key}.{$name}";
        if (Core\Lang::has($dot_key))
        {
            $labels[$name] = Core\Lang::get($dot_key);
        }
    }
    return $labels;
}

/**
 * Get input($_GET or $_POST depending on the method) data
 * @param string $key
 * @param mixed $default
 * @return string
 */
function input(string $key, $default=null)
{
    return Core\Input::get($key, $default);
}

/**
 * Get QueryString data
 * @param string $key
 * @param mixed $default
 * @return string
 */
function queryString(string $key, $default=null)
{
    return Core\QueryString::get($key, $default);
}

/**
 * Get session($_SESSION) date
 * @param string $key
 * @param mixed $default
 * @return mixed
 */
function session(string $key, $default=null)
{
    return Core\Session::get($key, $default);
}

/**
 * Get flash date
 * @param string $key
 * @param mixed $default
 * @return mixed
 */
function flash(string $key, $default=null)
{
    return Core\Flash::get($key, $default);
}

/**
 * Get cookie($_COOKIE) date
 * @param string $key
 * @param mixed $default
 * @return string
 */
function cookie(string $key, $default=null)
{
    return Core\Cookie::get($key, $default);
}