<?php
/**
 * @package SP Page Builder
 * @author JoomShaper http://www.joomshaper.com
 * @copyright Copyright (c) 2010 - 2015 JoomShaper
 * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 or later
*/
//no direct accees
defined ('_JEXEC') or die ('Restricted access');

abstract class SppagebuilderHelperRoute
{
	protected static $lookup = array();
	protected static $lang_lookup = array();

	public static function getPageRoute($id, $language = 0)
	{
		$needles = array(
			'page'  => array((int) $id)
		);

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

		if ($language && $language != "*" && JLanguageMultilang::isEnabled())
		{
			self::buildLanguageLookup();

			if (isset(self::$lang_lookup[$language]))
			{
				$link .= '&lang=' . self::$lang_lookup[$language];
				$needles['language'] = $language;
			}
		}

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

		return $link;
	}

	protected static function buildLanguageLookup()
	{
		if (count((array) self::$lang_lookup) == 0)
		{
			$db    = JFactory::getDbo();
			$query = $db->getQuery(true)
				->select('a.sef AS sef')
				->select('a.lang_code AS lang_code')
				->from('#__languages AS a');

			$db->setQuery($query);
			$langs = $db->loadObjectList();

			foreach ($langs as $lang)
			{
				self::$lang_lookup[$lang->lang_code] = $lang->sef;
			}
		}
	}

	protected static function _findItem($needles = null)
	{
		$app      = JFactory::getApplication();
		$menus    = $app->getMenu('site');
		$language = isset($needles['language']) ? $needles['language'] : '*';

		// Prepare the reverse lookup array.
		if (!isset(self::$lookup[$language]))
		{
			self::$lookup[$language] = array();

			$component  = JComponentHelper::getComponent('com_sppagebuilder');

			$attributes = array('component_id');
			$values     = array($component->id);

			if ($language != '*')
			{
				$attributes[] = 'language';
				$values[]     = array($needles['language'], '*');
			}

			$items = $menus->getItems($attributes, $values);

			foreach ($items as $item)
			{
				if (isset($item->query) && isset($item->query['view']))
				{
					$view = $item->query['view'];

					if (!isset(self::$lookup[$language][$view]))
					{
						self::$lookup[$language][$view] = array();
					}

					if (isset($item->query['id']))
					{
						if (!isset(self::$lookup[$language][$view][$item->query['id']]) || $item->language != '*')
						{
							self::$lookup[$language][$view][$item->query['id']] = $item->id;
						}
					}
				}
			}
		}

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

		// Check if the active menuitem matches the requested language
		$active = $menus->getActive();

		if ($active && $active->component == 'com_sppagebuilder' && ($language == '*' || in_array($active->language, array('*', $language)) || !JLanguageMultilang::isEnabled()))
		{
			return $active->id;
		}

		// If not found, return language specific home link
		$default = $menus->getDefault($language);

		return !empty($default->id) ? $default->id : null;
	}
}