<?php
/* @package Joomla
 * @copyright Copyright (C) Open Source Matters. All rights reserved.
 * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
 * @extension Phoca Extension
 * @copyright Copyright (C) Jan Pavelka www.phoca.cz
 * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
 */

defined( '_JEXEC' ) or die();
jimport('joomla.application.component.modellist');

class PhocaDownloadCpModelPhocaDownloadCats extends JModelList
{
	protected $option 		= 'com_phocadownload';	
	protected $total		= 0;
	
	public function __construct($config = array())
	{
		if (empty($config['filter_fields'])) {
			$config['filter_fields'] = array(
				'id', 'a.id',
				'title', 'a.title',
				'alias', 'a.alias',
				'checked_out', 'a.checked_out',
				'checked_out_time', 'a.checked_out_time',
				'category_id', 'category_id',
				'state', 'a.state',
				'access', 'a.access', 'access_level',
				'ordering', 'a.ordering',
				'language', 'a.language',
				'hits', 'a.hits',
				'average', 'v.average',
				'published','a.published',
				'autorized', 'a.approved',
				'owner_id','a.owner_id',
				'parentcat_title', 'parentcat_title'
			);
		}
		parent::__construct($config);
	}
	
	protected function populateState($ordering = NULL, $direction = NULL)
	{
		// Initialise variables.
		$app = JFactory::getApplication('administrator');

		// Load the filter state.
		$search = $app->getUserStateFromRequest($this->context.'.filter.search', 'filter_search');
		$this->setState('filter.search', $search);

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

		$state = $app->getUserStateFromRequest($this->context.'.filter.state', 'filter_published', '', 'string');
		$this->setState('filter.state', $state);
		
		// Not used in SQL - used in view in recursive category tree function
		$levels = $app->getUserStateFromRequest($this->context.'.filter.level', 'filter_level', '', 'string');
		$this->setState('filter.level', $levels);

		$categoryId = $app->getUserStateFromRequest($this->context.'.filter.parent_id', 'filter_parent_id', null);
		$this->setState('filter.parent_id', $categoryId);

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

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

		// List state information.
		parent::populateState('a.title', 'asc');
	}
	
	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.category_id');
		$id	.= ':'.$this->getState('filter.file_id');

		return parent::getStoreId($id);
	}
	
	/*
	 * Because of tree we need to load all the items
	 *
	 * We need to load all items because of creating tree
	 * After creating tree we get info from pagination
	 * and will set displaying of categories for current pagination
	 * E.g. pagination is limitstart 5, limit 5 - so only categories from 5 to 10 will be displayed (in Default.php)
	 */
		
	public function getItems()
	{
		// Get a storage key.
		$store = $this->getStoreId();

		// Try to load the data from internal storage.
		if (!empty($this->cache[$store])) {
			return $this->cache[$store];
		}

		// Load the list items.
		//$query	= $this->getListQuery();
		//$items	= $this->_getList($query, $this->getState('list.start'), $this->getState('list.limit'));
		//$items	= $this->_getList($query);
		
		// Check for a database error.
/*		if ($this->_db->getErrorNum()) {
			throw new Exception($this->_db->getErrorMsg(), 500);
			return false;
		}*/
		
		try {
			// Load the list items.
			$query	= $this->getListQuery();
			//$items	= $this->_getList($query, $this->getState('list.start'), $this->getState('list.limit'));

			$items	= $this->_getList($query);
		} catch (RuntimeException $e) {
			
			throw new Exception($e->getMessage(), 500);
			return false;
		}

		// Add the items to the internal cache.
		$this->cache[$store] = $items;

		return $this->cache[$store];
	}
	
	protected function getListQuery()
	{
		/*
		$query = ' SELECT a.*, cc.title AS parentname, u.name AS editor, v.average AS ratingavg, ua.username AS usercatname, c.countid AS countid, ag.title AS access_level'
		. ' FROM #__phocadownload_categories AS a '
		. ' LEFT JOIN #__users AS u ON u.id = a.checked_out '
		. ' LEFT JOIN #__viewlevels AS ag ON ag.id = a.access '
		. ' LEFT JOIN #__phocadownload_categories AS cc ON cc.id = a.parent_id'
		. ' LEFT JOIN #__phocadownload_votes_statistics AS v ON v.catid = a.id'
		. ' LEFT JOIN #__users AS ua ON ua.id = a.owner_id'
		. ' JOIN (SELECT c.parent_id, count(*) AS countid'
		. ' FROM #__phocadownload_categories AS c'
		.' GROUP BY c.parent_id ) AS c'
		.' ON a.parent_id = c.parent_id'
		. $where
		. $orderby;
		*/
		// 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.*'
			)
		);
		$query->from('`#__phocadownload_categories` AS a');

		// Join over the language
		$query->select('l.title AS language_title');
		$query->join('LEFT', '`#__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 categories.
		$query->select('c.title AS parentcat_title, c.id AS parentcat_id');
		$query->join('LEFT', '#__phocadownload_categories AS c ON c.id = a.parent_id');
		
		//$query->select('ua.id AS userid, ua.username AS username, ua.name AS usernameno');
		//$query->join('LEFT', '#__users AS ua ON ua.id = a.owner_id');
		
		
		
		$query->select('cc.countid AS countid');
		$query->join('LEFT', '(SELECT cc.parent_id, count(*) AS countid'
		. ' FROM #__phocadownload_categories AS cc'
		.' GROUP BY cc.parent_id ) AS cc'
		.' ON a.parent_id = cc.parent_id');
		

		// Filter by access level.
		if ($access = $this->getState('filter.access')) {
			$query->where('a.access = '.(int) $access);
		}

		// Filter by published state.
		$published = $this->getState('filter.state');
		if (is_numeric($published)) {
			$query->where('a.published = '.(int) $published);
		}
		else if ($published === '') {
			$query->where('(a.published IN (0, 1))');
		}

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

		// 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.alias LIKE '.$search.')');
			}
		}
		
		//$query->group('a.id');

		// Add the list ordering clause.
		$orderCol	= $this->state->get('list.ordering', 'title');
		$orderDirn	= $this->state->get('list.direction', 'asc');
		/*if ($orderCol == 'a.ordering' || $orderCol == 'parentcat_title') {
			$orderCol = 'parentcat_title '.$orderDirn.', a.ordering';
		}*/
		$query->order($db->escape($orderCol.' '.$orderDirn));

		//echo nl2br(str_replace('#__', 'jos_', $query->__toString()));
		
		
		return $query;
	}
	
	public function getTotal() {
		$store = $this->getStoreId('getTotal');
		if (isset($this->cache[$store])) {
			return $this->cache[$store];
		}

		// PHOCAEDIT
		if (isset($this->total) && (int)$this->total > 0) {
			$total = (int)$this->total;
		} else {
			$query = $this->_getListQuery();

			try {
				$total = (int) $this->_getListCount($query);
			}
			catch (RuntimeException $e) {
				
				throw new Exception($e->getMessage(), 500);

				return false;
			}
		}

		$this->cache[$store] = $total;
		return $this->cache[$store];
	}
	
	public function setTotal($total) {
		// When we use new total and new pagination, we need to clean their cache
		$store1 = $this->getStoreId('getTotal');
		$store2 = $this->getStoreId('getStart');
		$store3 = $this->getStoreId('getPagination');
		
		unset($this->cache[$store1]);
		unset($this->cache[$store2]);
		unset($this->cache[$store3]);
		$this->total = (int)$total;
	}

}
?>