Joomla-Sermon-Distributor/site/models/categories.php

<?php
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/-------------------------------------------------------------------------------------------------------------------------------/

	@version		@update number 20 of this MVC
	@build			28th November, 2016
	@created		5th November, 2015
	@package		Sermon Distributor
	@subpackage		categories.php
	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
	@copyright		Copyright (C) 2015. All Rights Reserved
	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
	
	A sermon distributor that links to Dropbox. 
                                                             
/-----------------------------------------------------------------------------------------------------------------------------*/

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import the Joomla modellist library
jimport('joomla.application.component.modellist');

/**
 * Sermondistributor Model for Categories
 */
class SermondistributorModelCategories extends JModelList
{
	/**
	 * Model user data.
	 *
	 * @var        strings
	 */
	protected $user;
	protected $userId;
	protected $guest;
	protected $groups;
	protected $levels;
	protected $app;
	protected $input;
	protected $uikitComp;

	/**
	 * Method to build an SQL query to load the list data.
	 *
	 * @return      string  An SQL query
	 */
	protected function getListQuery()
	{
		// Get the current user for authorisation checks
		$this->user		= JFactory::getUser();
		$this->userId		= $this->user->get('id');
		$this->guest		= $this->user->get('guest');
                $this->groups		= $this->user->get('groups');
                $this->authorisedGroups	= $this->user->getAuthorisedGroups();
		$this->levels		= $this->user->getAuthorisedViewLevels();
		$this->app		= JFactory::getApplication();
		$this->input		= $this->app->input;
		$this->initSet		= true; 
		// Get a db connection.
		$db = JFactory::getDbo();

		// Create a new query object.
		$query = $db->getQuery(true);

		// Get from #__categories as a
		$query->select($db->quoteName(
			array('a.id','a.title','a.alias','a.description','a.hits','a.language','a.params'),
			array('id','name','alias','description','hits','language','params')));
		$query->from($db->quoteName('#__categories', 'a'));
		$query->where('a.access IN (' . implode(',', $this->levels) . ')');
		$query->where('a.published = 1');
		$query->where('a.extension = "com_sermondistributor.sermons"');
		$query->order('a.title ASC');

		// return the query object
		return $query;
	}

	/**
	 * Method to get an array of data items.
	 *
	 * @return  mixed  An array of data items on success, false on failure.
	 */
	public function getItems()
	{
		$user = JFactory::getUser();
		// check if this user has permission to access item
		if (!$user->authorise('site.categories.access', 'com_sermondistributor'))
		{
			$app = JFactory::getApplication();
			$app->enqueueMessage(JText::_('COM_SERMONDISTRIBUTOR_NOT_AUTHORISED_TO_VIEW_CATEGORIES'), 'error');
			// redirect away to the default view if no access allowed.
			$app->redirect(JRoute::_('index.php?option=com_sermondistributor&view=preachers'));
			return false;
		}  
		// load parent items
		$items = parent::getItems();

		// Get the global params
		$globalParams = JComponentHelper::getParams('com_sermondistributor', true);

		// Convert the parameter fields into objects.
		if (SermondistributorHelper::checkArray($items))
		{
			foreach ($items as $nr => &$item)
			{
				// Always create a slug for sef URL's
				$item->slug = (isset($item->alias) && isset($item->id)) ? $item->id.':'.$item->alias : $item->id;
				// set idCatidSermonB to the $item object.
				$item->idCatidSermonB = $this->getIdCatidSermonEfee_B($item->id);
			}
		} 


		if (SermondistributorHelper::checkArray($items))
		{
			foreach ($items as $nr => &$item)
			{
				if (!SermondistributorHelper::checkArray($item->idCatidSermonB))
				{
					// remove empty category
					unset($items[$nr]);
				}
				// set the icon if found
				if (SermondistributorHelper::checkJson($item->params))
				{
					$params = json_decode($item->params, true);
					if (isset($params['image']) && SermondistributorHelper::checkString($params['image']))
					{
						$item->icon = $params['image'];
					}
				}
			}
		}

		// return items
		return $items;
	} 

	/**
	* Method to get an array of Sermon Objects.
	*
	* @return mixed  An array of Sermon Objects on success, false on failure.
	*
	*/
	public function getIdCatidSermonEfee_B($id)
	{
		// Get a db connection.
		$db = JFactory::getDbo();

		// Create a new query object.
		$query = $db->getQuery(true);

		// Get from #__sermondistributor_sermon as b
		$query->select($db->quoteName(
			array('b.id'),
			array('id')));
		$query->from($db->quoteName('#__sermondistributor_sermon', 'b'));
		$query->where('b.catid = ' . $db->quote($id));
		$query->where('b.access IN (' . implode(',', $this->levels) . ')');
		$query->where('b.published = 1');

		// Reset the query using our newly populated query object.
		$db->setQuery($query);
		$db->execute();

		// check if there was data returned
		if ($db->getNumRows())
		{
			return $db->loadObjectList();
		}
		return false;
	}


	/**
	* Get the uikit needed components
	*
	* @return mixed  An array of objects on success.
	*
	*/
	public function getUikitComp()
	{
		if (isset($this->uikitComp) && SermondistributorHelper::checkArray($this->uikitComp))
		{
			return $this->uikitComp;
		}
		return false;
	}  
}