<?php

/**
 * @copyright	Copyright (C) 2005 - 2012 Open Source Matters, Inc. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 */
// No direct access.
defined('_JEXEC') or die;

jimport('joomla.application.component.modellist');

/**
 * Modules Component Module Model
 *
 * @package		Joomla.Administrator
 * @subpackage	com_modules
 * @since		1.5
 */
class ModulesModelModules extends JModelList
{

	/**
	 * Constructor.
	 *
	 * @param	array	An optional associative array of configuration settings.
	 * @see		JController
	 * @since	1.6
	 */
	public function __construct($config = array ())
	{
		if (empty($config['filter_fields']))
		{
			$config['filter_fields'] = array (
				'id', 'a.id',
				'title', 'a.title',
				'checked_out', 'a.checked_out',
				'checked_out_time', 'a.checked_out_time',
				'published', 'a.published',
				'access', 'a.access', 'access_level',
				'ordering', 'a.ordering',
				'module', 'a.module',
				'language', 'a.language', 'language_title',
				'publish_up', 'a.publish_up',
				'publish_down', 'a.publish_down',
				'client_id', 'a.client_id',
				'position', 'a.position',
				'pages',
				'name', 'e.name',
			);
		}

		parent::__construct($config);
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @since	1.6
	 */
	protected function populateState($ordering = null, $direction = null)
	{
		// Initialise variables.
		$app = JFactory::getApplication('administrator');
		// Load the filter state.
		$search = $this -> getUserStateFromRequest($this -> context . '.filter.search', 'filter_search');
		$this -> setState('filter.search', $search);

		$accessId = $this -> getUserStateFromRequest($this -> context . '.filter.access', 'filter_access', null, 'int');
		$this -> setState('filter.access', $accessId);

		$state = $this -> getUserStateFromRequest($this -> context . '.filter.state', 'filter_state', '', 'string');
		$this -> setState('filter.state', $state);

		$position = $this -> getUserStateFromRequest($this -> context . '.filter.position', 'filter_position', '', 'string');
		$this -> setState('filter.position', $position);

		$module = $this -> getUserStateFromRequest($this -> context . '.filter.module', 'filter_module', '', 'string');
		$this -> setState('filter.module', $module);

		$clientId = $this -> getUserStateFromRequest($this -> context . '.filter.client_id', 'filter_client_id', 0, 'int', false);
		
		$template = $this -> getUserStateFromRequest($this -> context . '.filter.template', 'filter_template', '', 'string');
		$this -> setState('filter.template', $template);
		
		$previousId = $app -> getUserState($this -> context . '.filter.client_id_previous', null);
		if ($previousId != $clientId || $previousId === null)
		{
			$this -> getUserStateFromRequest($this -> context . '.filter.client_id_previous', 'filter_client_id_previous', 0, 'int', true);
			$app -> setUserState($this -> context . '.filter.client_id_previous', $clientId);
		}
		$this -> setState('filter.client_id', $clientId);

		$language = $this -> getUserStateFromRequest($this -> context . '.filter.language', 'filter_language', '');
		$this -> setState('filter.language', $language);

		// Load the parameters.
		$params = JComponentHelper::getParams('com_modules');
		$this -> setState('params', $params);

		// List state information.
		parent::populateState('position', 'asc');
	}

	/**
	 * Method to get a store id based on model configuration state.
	 *
	 * This is necessary because the model is used by the component and
	 * different modules that might need different sets of data or different
	 * ordering requirements.
	 *
	 * @param	string	A prefix for the store id.
	 *
	 * @return	string	A store id.
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id .= ':' . $this -> getState('filter.search');
		$id .= ':' . $this -> getState('filter.access');
		$id .= ':' . $this -> getState('filter.state');
		$id .= ':' . $this -> getState('filter.position');
		$id .= ':' . $this -> getState('filter.module');
		$id .= ':' . $this -> getState('filter.client_id');
		$id .= ':' . $this -> getState('filter.language');

		return parent::getStoreId($id);
	}

	/**
	 * Returns an object list
	 *
	 * @param	string The query
	 * @param	int Offset
	 * @param	int The number of records
	 * @return	array
	 */
	protected function _getList($query, $limitstart = 0, $limit = 0)
	{
		$ordering = $this -> getState('list.ordering', 'ordering');
		if (in_array($ordering, array ('pages', 'name')))
		{
			$this -> _db -> setQuery($query);
			$result = $this -> _db -> loadObjectList();
			$this -> translate($result);
			$lang = JFactory::getLanguage();
			JArrayHelper::sortObjects($result, $ordering, $this -> getState('list.direction') == 'desc' ? -1 : 1, true, $lang -> getLocale());
			$total = count($result);
			$this -> cache[$this -> getStoreId('getTotal')] = $total;
			if ($total < $limitstart)
			{
				$limitstart = 0;
				$this -> setState('list.start', 0);
			}
			return array_slice($result, $limitstart, $limit ? $limit : null);
		} else
		{
			if ($ordering == 'ordering')
			{
				$query -> order('a.position ASC');
				$ordering = 'a.ordering';
			}
			if ($ordering == 'language_title')
			{
				$ordering = 'l.title';
			}
			$query -> order($this -> _db -> quoteName($ordering) . ' ' . $this -> getState('list.direction'));
			if ($ordering == 'position')
			{
				$query -> order('a.ordering ASC');
			}
			$result = parent::_getList($query, $limitstart, $limit);
			$this -> translate($result);
			return $result;
		}
	}

	/**
	 * Translate a list of objects
	 *
	 * @param	array The array of objects
	 * @return	array The array of translated objects
	 */
	protected function translate(&$items)
	{
		$lang = JFactory::getLanguage();
		$client = $this -> getState('filter.client_id') ? 'administrator' : 'site';
		foreach ($items as $item)
		{
			$extension = $item -> module;
			$source = constant('JPATH_' . strtoupper($client)) . "/modules/$extension";
			$lang -> load("$extension.sys", constant('JPATH_' . strtoupper($client)), null, false, false) || $lang -> load("$extension.sys", $source, null, false, false) || $lang -> load("$extension.sys", constant('JPATH_' . strtoupper($client)), $lang -> getDefault(), false, false) || $lang -> load("$extension.sys", $source, $lang -> getDefault(), false, false);
			$item -> name = JText::_($item -> name);
			if (is_null($item -> pages))
			{
				$item -> pages = JText::_('JNONE');
			} elseif ($item -> pages < 0)
			{
				$item -> pages = JText::_('COM_MODULES_ASSIGNED_VARIES_EXCEPT');
			} elseif ($item -> pages > 0)
			{
				$item -> pages = JText::_('COM_MODULES_ASSIGNED_VARIES_ONLY');
			} else
			{
				$item -> pages = JText::_('JALL');
			}
		}
	}

	/**
	 * Build an SQL query to load the list data.
	 *
	 * @return	JDatabaseQuery
	 */
	protected function getListQuery()
	{
		// Create a new query object.
		$db = $this -> getDbo();
		$query = $db -> getQuery(true);

		// Select the required fields from the table.
		$query -> select(
				$this -> getState(
						'list.select', 'a.id, a.title, a.note, a.position, a.module, a.language,' .
						'a.checked_out, a.checked_out_time, a.published+2*(e.enabled-1) as published, a.access, a.ordering, a.publish_up, a.publish_down'
				)
		);
		$query -> from($db -> quoteName('#__modules') . ' AS a');

		// Join over the language
		$query -> select('l.title AS language_title');
		$query -> join('LEFT', $db -> quoteName('#__languages') . ' AS l ON l.lang_code = a.language');

		// Join over the users for the checked out user.
		$query -> select('uc.name AS editor');
		$query -> join('LEFT', '#__users AS uc ON uc.id=a.checked_out');

		// Join over the asset groups.
		$query -> select('ag.title AS access_level');
		$query -> join('LEFT', '#__viewlevels AS ag ON ag.id = a.access');

		// Join over the module menus
		$query -> select('MIN(mm.menuid) AS pages');
		$query -> join('LEFT', '#__modules_menu AS mm ON mm.moduleid = a.id');

		// Join over the extensions
		$query -> select('e.name AS name');
		$query -> join('LEFT', '#__extensions AS e ON e.element = a.module');
		$query -> group('a.id, a.title, a.note, a.position, a.module, a.language,a.checked_out,' .
				'a.checked_out_time, a.published, a.access, a.ordering,l.title, uc.name, ag.title, e.name,' .
				'l.lang_code, uc.id, ag.id, mm.moduleid, e.element, a.publish_up, a.publish_down,e.enabled');

		// Filter by access level.
		if ($access = $this -> getState('filter.access'))
		{
			$query -> where('a.access = ' . (int) $access);
		}
		// Filter by client.
		$clientId = $this -> getState('filter.client_id');
		if (is_numeric($clientId))
		{
			$query -> where('a.client_id = ' . (int) $clientId . ' AND e.client_id =' . (int) $clientId);
		}
		// Filter by template
		$template = $this -> getState('filter.template');
		if ($template)
		{
			$listPosition = ModulesHelper::getPositionsByTemplate();
			if(!empty($listPosition)){
				$query -> where('a.position in (' .$listPosition.')');
			}		
		}	
		// Filter by published state
		$state = $this -> getState('filter.state');
		if (is_numeric($state))
		{
			$query -> where('a.published = ' . (int) $state);
		} elseif ($state === '')
		{
			$query -> where('(a.published IN (0, 1))');
		}

		// Filter by position
		$position = $this -> getState('filter.position');
		if ($position && $position != 'none')
		{
			$query -> where('a.position = ' . $db -> Quote($position));
		} elseif ($position == 'none')
		{
			$query -> where('a.position = ' . $db -> Quote(''));
		}

		// Filter by module
		$module = $this -> getState('filter.module');
		if ($module)
		{
			$query -> where('a.module = ' . $db -> Quote($module));
		}

		// Filter by search in title
		$search = $this -> getState('filter.search');
		if (!empty($search))
		{
			if (stripos($search, 'id:') === 0)
			{
				$query -> where('a.id = ' . (int) substr($search, 3));
			} else
			{
				$search = $db -> Quote('%' . $db -> escape($search, true) . '%');
				$query -> where('(' . 'a.title LIKE ' . $search . ' OR a.note LIKE ' . $search . ')');
			}
		}

		// Filter on the language.
		if ($language = $this -> getState('filter.language'))
		{
			$query -> where('a.language = ' . $db -> quote($language));
		}

		//echo nl2br(str_replace('#__','jos_',$query));
		
		return $query;
	}

}
