<?php
/**
 * @copyright	Copyright (c) 2013 Skyline Technology Ltd (http://extstore.com). All rights reserved.
 * @license		http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

// No direct access.
defined('_JEXEC') or die;

/**
 * Methods supporting a list of Project records.
 *
 * @package		Joomla.Administrator
 * @subpakage	ExtStore.AdvPortfolioPro
 */
class AdvPortfolioProModelProjects extends JModelList {
	/**
	 * Constructor.
	 *
	 * @param	array	An optional associative array of configuration settings.
	 * @see		JControllerLegacy
	 */
	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',
				'catid', 'a.catid', 'category_title',
				'state', 'a.state',
				'access', 'a.access', 'access_level',
				'created', 'a.created',
				'created_by', 'a.created_by',
				'ordering', 'a.ordering',
				'language', 'a.language',
			);
		}

		parent::__construct($config);
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 */
	protected function populateState($ordering = null, $direction = null) {
		// Initialize 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);

		$published	= $this->getUserStateFromRequest($this->context . '.filter.published', 'filter_published', '', 'string');
		$this->setState('filter.published', $published);
		
		$categoryId	= $this->getUserStateFromRequest($this->context . '.filter.category_id', 'filter_category_id', '');
		$this->setState('filter.category_id', $categoryId);

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

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

		// List state information.
		parent::populateState($ordering ? $ordering : 'a.ordering', $direction ? $direction : '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		$id	A prefix for the store id.
	 * @return	string		A store id.
	 */
	protected function getStoreId($id = '') {
		// compile the store id.
		$id	.= ':' . $this->getState('filter.search');
		$id	.= ':' . $this->getState('filter.access');
		$id	.= ':' . $this->getState('filter.published');
		$id	.= ':' . $this->getState('filter.category_id');
		$id	.= ':' . $this->getState('filter.language');

		return parent::getStoreId($id);
	}

	/**
	 * 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);
		$user	= JFactory::getUser();

		// Select the required fields from the table.
		$query->select(
			$this->getState(
				'list.select',
				'a.id, a.title, a.alias, a.checked_out, a.checked_out_time, a.catid,
				 a.state, a.access, a.ordering,
				 a.language, a.created, a.featured'
			)
		);

		$query->from('#__advportfoliopro_projects 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 category_title');
		$query->join('LEFT', '#__categories AS c ON c.id = a.catid');

		// Join over the users for the author.
		$query->select('ua.name AS author_name');
		$query->join('LEFT', '#__users AS ua ON ua.id = a.created_by');

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

		// Implement View Level Access.
		if (!$user->authorise('core.admin')) {
			$groups	= implode(', ', $user->getAuthorisedViewLevels());
			$query->where('a.access IN (' . $groups . ')');
		}

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

		// Filter by category.
		$categoryId	= $this->getState('filter.category_id');
		if (is_numeric($categoryId)) {
			$query->where('a.catid = ' . (int) $categoryId);
		}

		// 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 . ')');
			}
		}

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

		// Add the list ordering clause.
		$orderCol	= $this->getState('list.ordering');
		$orderDirn	= $this->getState('list.direction');

		if ($orderCol == 'a.ordering' || $orderCol == 'category_title') {
			$orderCol = 'category_title ' . $orderDirn . ', a.ordering';
		}

		$query->order($db->escape($orderCol . ' ' . $orderDirn));

		return $query;
	}
}