<?php

/**
 * @author      Guillermo Vargas <guille@vargas.co.cr>
 * @author      Branko Wilhelm <branko.wilhelm@gmail.com>
 * @link        http://www.z-index.net
 * @copyright   (c) 2005 - 2009 Joomla! Vargas. All rights reserved.
 * @copyright   (c) 2015 Branko Wilhelm. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

/**
 * Class XmapRoute
 *
 * @todo should be instanceof JComponentRouterBase
 */
class XmapRoute
{
    /**
     * @var null
     */
    protected static $lookup = null;

    /**
     * @param $id
     * @param string $view
     *
     * @return string
     */
    public static function sitemap($id, $view = 'html')
    {
        $needles = array(
            'html' => (int)$id
        );

        //Create the link
        $link = 'index.php?option=com_xmap&view=' . $view . '&id=' . $id;

        if ($itemId = self::_findItemId($needles))
        {
            $link .= '&Itemid=' . $itemId;
        };

        return $link;
    }

    /**
     * @param $needles
     *
     * @return null
     * @throws Exception
     */
    protected static function _findItemId($needles)
    {
        // Prepare the reverse lookup array.
        if (is_null(self::$lookup))
        {
            self::$lookup = array();

            $component = JComponentHelper::getComponent('com_xmap');
            $menus = JFactory::getApplication()->getMenu();
            $items = $menus->getItems('component_id', $component->id);

            foreach ($items as &$item)
            {
                if (isset($item->query) && isset($item->query['view']))
                {
                    $view = $item->query['view'];
                    if (!isset(self::$lookup[$view]))
                    {
                        self::$lookup[$view] = array();
                    }
                    if (isset($item->query['id']))
                    {
                        self::$lookup[$view][$item->query['id']] = $item->id;
                    }
                }
            }
        }

        $match = null;

        foreach ($needles as $view => $id)
        {
            if (isset(self::$lookup[$view]))
            {
                if (isset(self::$lookup[$view][$id]))
                {
                    return self::$lookup[$view][$id];
                }
            }
        }

        return null;
    }
}

/**
 * Build the route for the com_content component
 *
 * @param    array    An array of URL arguments
 *
 * @return    array    The URL arguments to use to assemble the subsequent URL.
 */
function XmapBuildRoute(&$query)
{
    $segments = array();

    // get a menu item based on Itemid or currently active
    $app = JFactory::getApplication();
    $menu = $app->getMenu();

    if (empty($query['Itemid']))
    {
        $menuItem = $menu->getActive();
    } else
    {
        $menuItem = $menu->getItem($query['Itemid']);
    }
    $mView = (empty($menuItem->query['view'])) ? null : $menuItem->query['view'];
    $mId = (empty($menuItem->query['id'])) ? null : $menuItem->query['id'];

    if (!empty($query['Itemid']))
    {
        unset($query['view']);
        unset($query['id']);
    } else
    {
        if (!empty($query['view']))
        {
            $segments[] = $query['view'];
        }
    }


    if (isset($query['id']))
    {
        if (empty($query['Itemid']))
        {
            $segments[] = $query['id'];
        } else
        {
            if (isset($menuItem->query['id']))
            {
                if ($query['id'] != $mId)
                {
                    $segments[] = $query['id'];
                }
            } else
            {
                $segments[] = $query['id'];
            }
        }
        unset($query['id']);
    };

    if (isset($query['layout']))
    {
        if (!empty($query['Itemid']) && isset($menuItem->query['layout']))
        {
            if ($query['layout'] == $menuItem->query['layout'])
            {

                unset($query['layout']);
            }
        } else
        {
            if ($query['layout'] == 'default')
            {
                unset($query['layout']);
            }
        }
    };

    return $segments;
}

/**
 * Parse the segments of a URL.
 *
 * @param    array    The segments of the URL to parse.
 *
 * @return    array    The URL attributes to be used by the application.
 */
function XmapParseRoute($segments)
{
    $vars = array();

    //G et the active menu item.
    $app = JFactory::getApplication();
    $menu = $app->getMenu();
    $item = $menu->getActive();

    // Count route segments
    $count = count($segments);

    // Standard routing for articles.
    if (!isset($item))
    {
        $vars['view'] = $segments[0];
        $vars['id'] = $segments[$count - 1];

        return $vars;
    }

    $vars['view'] = $item->query['view'];
    $vars['id'] = $item->query['id'];

    return $vars;
}