<?php

/**
 * Kunena Component
 *
 * @package       Kunena.Administrator.Template
 * @subpackage    Categories
 *
 * @copyright     Copyright (C) 2008 - @currentyear@ Kunena Team. All rights reserved.
 * @license       https://www.gnu.org/copyleft/gpl.html GNU/GPL
 * @link          https://www.kunena.org
 **/

namespace Kunena\Forum\Libraries\Request;

\defined('_JEXEC') or die();

use InvalidArgumentException;
use Joomla\Input\Input;
use Kunena\Forum\Libraries\Controller\KunenaControllerBase;

/**
 * implements \Kunena Request class.
 *
 * This class is part of Kunena HMVC implementation, allowing calls to
 * any display controller in the component.
 *
 * <code>
 *    // Executes the controller and sets the layout for the view.
 *    echo \Kunena\Forum\Libraries\Request\Request::factory('User/Login')->execute()->set('layout', 'form');
 *
 *    // If there are no parameters for the view, this shorthand works also.
 *    echo \Kunena\Forum\Libraries\Request\Request::factory('User/Registration');
 * </code>
 *
 * Individual controller classes are located in /components/com_kunena/controller
 * sub-folders eg: controller/user/login/display.php
 *
 * @see     KunenaLayout
 * @since   Kunena 6.0
 */
class KunenaRequest
{
    /**
     * Returns controller.
     *
     * @param   string      $path     Controller path.
     * @param   Input|null  $input    input
     * @param   mixed       $options  options
     *
     * @return  KunenaControllerBase| KunenaControllerDisplay
     *
     * @throws \Exception
     *@since   Kunena 6.0
     */
    public static function factory(string $path, ?Input $input = null, $options = null)
    {
        // Normalize input.
        $words = ucwords(strtolower(trim(preg_replace('/[^a-z0-9_]+/i', ' ', (string) $path))));

        if (!$words) {
            throw new InvalidArgumentException('No controller given.', 404);
        }

        // Attempt to load controller.
        $ex      = explode(' ', $words);
        $subpart = '';

        if (\count($ex) == 4) {
            $subpart = '' . $ex[2] . '\\';
        }

        $classnamespaced = 'Kunena\Forum\Site\Controller\\' . $ex[0] . '\\' . $ex[1] . '\\' . $subpart . str_replace(' ', '', $words);

        if (!class_exists($classnamespaced)) {
            throw new InvalidArgumentException(sprintf('In the KunenaRequest class the controller %s doesn\'t exist.', $classnamespaced), 404);
        }

        // Create controller object.
        return new $classnamespaced($input, null, $options);
    }
}