<?php
/**
 * @package    Joomla.Component.Builder
 *
 * @created    30th April, 2015
 * @author     Llewellyn van der Merwe <http://www.joomlacomponentbuilder.com>
 * @github     Joomla Component Builder <https://github.com/vdm-io/Joomla-Component-Builder>
 * @copyright  Copyright (C) 2015 - 2018 Vast Development Method. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import the Joomla modellist library
jimport('joomla.application.component.modellist');

/**
 * Libraries Model
 */
class ComponentbuilderModelLibraries extends JModelList
{
	public function __construct($config = array())
	{
		if (empty($config['filter_fields']))
        {
			$config['filter_fields'] = array(
				'a.id','id',
				'a.published','published',
				'a.ordering','ordering',
				'a.created_by','created_by',
				'a.modified_by','modified_by',
				'a.name','name',
				'a.description','description',
				'a.type','type',
				'a.how','how'
			);
		}

		parent::__construct($config);
	}
	
	/**
	 * Method to auto-populate the model state.
	 *
	 * @return  void
	 */
	protected function populateState($ordering = null, $direction = null)
	{
		$app = JFactory::getApplication();

		// Adjust the context to support modal layouts.
		if ($layout = $app->input->get('layout'))
		{
			$this->context .= '.' . $layout;
		}
		$name = $this->getUserStateFromRequest($this->context . '.filter.name', 'filter_name');
		$this->setState('filter.name', $name);

		$description = $this->getUserStateFromRequest($this->context . '.filter.description', 'filter_description');
		$this->setState('filter.description', $description);

		$type = $this->getUserStateFromRequest($this->context . '.filter.type', 'filter_type');
		$this->setState('filter.type', $type);

		$how = $this->getUserStateFromRequest($this->context . '.filter.how', 'filter_how');
		$this->setState('filter.how', $how);
        
		$sorting = $this->getUserStateFromRequest($this->context . '.filter.sorting', 'filter_sorting', 0, 'int');
		$this->setState('filter.sorting', $sorting);
        
		$access = $this->getUserStateFromRequest($this->context . '.filter.access', 'filter_access', 0, 'int');
		$this->setState('filter.access', $access);
        
		$search = $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search');
		$this->setState('filter.search', $search);

		$published = $this->getUserStateFromRequest($this->context . '.filter.published', 'filter_published', '');
		$this->setState('filter.published', $published);
        
		$created_by = $this->getUserStateFromRequest($this->context . '.filter.created_by', 'filter_created_by', '');
		$this->setState('filter.created_by', $created_by);

		$created = $this->getUserStateFromRequest($this->context . '.filter.created', 'filter_created');
		$this->setState('filter.created', $created);

		// List state information.
		parent::populateState($ordering, $direction);
	}
	
	/**
	 * Method to get an array of data items.
	 *
	 * @return  mixed  An array of data items on success, false on failure.
	 */
	public function getItems()
	{ 
		// check in items
		$this->checkInNow();

		// load parent items
		$items = parent::getItems();

		// set values to display correctly.
		if (ComponentbuilderHelper::checkArray($items))
		{
			// get user object.
			$user = JFactory::getUser();
			foreach ($items as $nr => &$item)
			{
				$access = ($user->authorise('library.access', 'com_componentbuilder.library.' . (int) $item->id) && $user->authorise('library.access', 'com_componentbuilder'));
				if (!$access)
				{
					unset($items[$nr]);
					continue;
				}

			}
		} 

		// set selection value to a translatable value
		if (ComponentbuilderHelper::checkArray($items))
		{
			foreach ($items as $nr => &$item)
			{
				// convert type
				$item->type = $this->selectionTranslation($item->type, 'type');

				// convert how
				$item->how = $this->selectionTranslation($item->how, 'how');

			}
		}
 
        
		// return items
		return $items;
	}

	/**
	* Method to convert selection values to translatable string.
	*
	* @return translatable string
	*/
	public function selectionTranslation($value,$name)
	{
		// Array of type language strings
		if ($name === 'type')
		{
			$typeArray = array(
				1 => 'COM_COMPONENTBUILDER_LIBRARY_MAIN',
				2 => 'COM_COMPONENTBUILDER_LIBRARY_BUNDLE'
			);
			// Now check if value is found in this array
			if (isset($typeArray[$value]) && ComponentbuilderHelper::checkString($typeArray[$value]))
			{
				return $typeArray[$value];
			}
		}

		// Array of how language strings
		if ($name === 'how')
		{
			$howArray = array(
				1 => 'COM_COMPONENTBUILDER_ALWAYS_ADD',
				2 => 'COM_COMPONENTBUILDER_CONDITIONS',
				3 => 'COM_COMPONENTBUILDER_CUSTOM_SCRIPT',
				4 => 'COM_COMPONENTBUILDER_BUILDIN',
				0 => 'COM_COMPONENTBUILDER_DO_NOT_ADD'
			);
			// Now check if value is found in this array
			if (isset($howArray[$value]) && ComponentbuilderHelper::checkString($howArray[$value]))
			{
				return JText::_($howArray[$value]);
			}
		}

		return $value;
	}
	
	/**
	 * Method to build an SQL query to load the list data.
	 *
	 * @return	string	An SQL query
	 */
	protected function getListQuery()
	{
		// Get the user object.
		$user = JFactory::getUser();
		// Create a new query object.
		$db = JFactory::getDBO();
		$query = $db->getQuery(true);

		// Select some fields
		$query->select('a.*');

		// From the componentbuilder_item table
		$query->from($db->quoteName('#__componentbuilder_library', 'a'));

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

		// Join over the asset groups.
		$query->select('ag.title AS access_level');
		$query->join('LEFT', '#__viewlevels AS ag ON ag.id = a.access');
		// Filter by access level.
		if ($access = $this->getState('filter.access'))
		{
			$query->where('a.access = ' . (int) $access);
		}
		// Implement View Level Access
		if (!$user->authorise('core.options', 'com_componentbuilder'))
		{
			$groups = implode(',', $user->getAuthorisedViewLevels());
			$query->where('a.access IN (' . $groups . ')');
		}
		// Filter by search.
		$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) . '%');
				$query->where('(a.name LIKE '.$search.' OR a.description LIKE '.$search.')');
			}
		}

		// Filter by how.
		if ($how = $this->getState('filter.how'))
		{
			$query->where('a.how = ' . $db->quote($db->escape($how)));
		}
		// Filter by Type.
		if ($type = $this->getState('filter.type'))
		{
			$query->where('a.type = ' . $db->quote($db->escape($type)));
		}

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

		return $query;
	} 
	
	/**
	 * Method to get a store id based on model configuration state.
	 *
	 * @return  string  A store id.
	 *
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id .= ':' . $this->getState('filter.id');
		$id .= ':' . $this->getState('filter.search');
		$id .= ':' . $this->getState('filter.published');
		$id .= ':' . $this->getState('filter.ordering');
		$id .= ':' . $this->getState('filter.created_by');
		$id .= ':' . $this->getState('filter.modified_by');
		$id .= ':' . $this->getState('filter.name');
		$id .= ':' . $this->getState('filter.description');
		$id .= ':' . $this->getState('filter.type');
		$id .= ':' . $this->getState('filter.how');

		return parent::getStoreId($id);
	}

	/**
	* Build an SQL query to checkin all items left checked out longer then a set time.
	*
	* @return  a bool
	*
	*/
	protected function checkInNow()
	{
		// Get set check in time
		$time = JComponentHelper::getParams('com_componentbuilder')->get('check_in');
		
		if ($time)
		{

			// Get a db connection.
			$db = JFactory::getDbo();
			// reset query
			$query = $db->getQuery(true);
			$query->select('*');
			$query->from($db->quoteName('#__componentbuilder_library'));
			$db->setQuery($query);
			$db->execute();
			if ($db->getNumRows())
			{
				// Get Yesterdays date
				$date = JFactory::getDate()->modify($time)->toSql();
				// reset query
				$query = $db->getQuery(true);

				// Fields to update.
				$fields = array(
					$db->quoteName('checked_out_time') . '=\'0000-00-00 00:00:00\'',
					$db->quoteName('checked_out') . '=0'
				);

				// Conditions for which records should be updated.
				$conditions = array(
					$db->quoteName('checked_out') . '!=0', 
					$db->quoteName('checked_out_time') . '<\''.$date.'\''
				);

				// Check table
				$query->update($db->quoteName('#__componentbuilder_library'))->set($fields)->where($conditions); 

				$db->setQuery($query);

				$db->execute();
			}
		}

		return false;
	}
}