Demo-Component/site/helpers/demo.php

<?php
/*----------------------------------------------------------------------------------|  www.vdm.io  |----/
				Vast Development Method 
/-------------------------------------------------------------------------------------------------------/

	@version		2.0.0
	@build			5th May, 2018
	@created		18th October, 2016
	@package		Demo
	@subpackage		demo.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
  ____  _____  _____  __  __  __      __       ___  _____  __  __  ____  _____  _  _  ____  _  _  ____ 
 (_  _)(  _  )(  _  )(  \/  )(  )    /__\     / __)(  _  )(  \/  )(  _ \(  _  )( \( )( ___)( \( )(_  _)
.-_)(   )(_)(  )(_)(  )    (  )(__  /(__)\   ( (__  )(_)(  )    (  )___/ )(_)(  )  (  )__)  )  (   )(  
\____) (_____)(_____)(_/\/\_)(____)(__)(__)   \___)(_____)(_/\/\_)(__)  (_____)(_)\_)(____)(_)\_) (__) 

/------------------------------------------------------------------------------------------------------*/

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

/**
 * Demo component helper
 */
abstract class DemoHelper
{ 

	/**
	 *	Change to nice fancy date
	 */
	public static function fancyDate($date)
	{
		if (!self::isValidTimeStamp($date))
		{
			$date = strtotime($date);
		}
		return date('jS \o\f F Y',$date);
	}

	/**
	 *	Change to nice fancy time and date
	 */
	public static function fancyDateTime($time)
	{
		if (!self::isValidTimeStamp($time))
		{
			$time = strtotime($time);
		}
		return date('(G:i) jS \o\f F Y',$time);
	}

	/**
	 *	Change to nice hour:minutes time
	 */
	public static function fancyTime($time)
	{
		if (!self::isValidTimeStamp($time))
		{
			$time = strtotime($time);
		}
		return date('G:i',$time);
	}

	/**
	 *	Check if string is a valid time stamp
	 */
	public static function isValidTimeStamp($timestamp)
	{
		return ((int) $timestamp === $timestamp)
		&& ($timestamp <= PHP_INT_MAX)
		&& ($timestamp >= ~PHP_INT_MAX);
	}
 
	
	public static function jsonToString($value, $sperator = ", ", $table = null, $id = 'id', $name = 'name')
	{
		// do some table foot work
		$external = false;
		if (strpos($table, '#__') !== false)
		{
			$external = true;
			$table = str_replace('#__', '', $table);
		}
		// check if string is JSON
		$result = json_decode($value, true);
		if (json_last_error() === JSON_ERROR_NONE)
		{
			// is JSON
			if (self::checkArray($result))
			{
				if (self::checkString($table))
				{
					$names = array();
					foreach ($result as $val)
					{
						if ($external)
						{
							if ($name = self::getVar(null, $val, $id, $name, '=', $table))
							{
								$names[] = $name;
							}
						}
						else
						{
							if ($name = self::getVar($table, $val, $id, $name))
							{
								$names[] = $name;
							}
						}
					}
					if (self::checkArray($names))
					{
						return (string) implode($sperator,$names);
					}	
				}
				return (string) implode($sperator,$result);
			}
			return (string) json_decode($value);
		}
		return $value;
	}

	/**
	*	Load the Component xml manifest.
	**/
	public static function manifest()
	{
		$manifestUrl = JPATH_ADMINISTRATOR."/components/com_demo/demo.xml";
		return simplexml_load_file($manifestUrl);
	}

	/**
	*	Joomla version object
	**/	
	protected static $JVersion;

	/**
	*	set/get Joomla version
	**/
	public static function jVersion()
	{
		// check if set
		if (!self::checkObject(self::$JVersion))
		{
			self::$JVersion = new JVersion();
		}
		return self::$JVersion;
	}

	/**
	*	Load the Contributors details.
	**/
	public static function getContributors()
	{
		// get params
		$params	= JComponentHelper::getParams('com_demo');
		// start contributors array
		$contributors = array();
		// get all Contributors (max 20)
		$searchArray = range('0','20');
		foreach($searchArray as $nr)
		{
			if ((NULL !== $params->get("showContributor".$nr)) && ($params->get("showContributor".$nr) == 2 || $params->get("showContributor".$nr) == 3))
			{
				// set link based of selected option
				if($params->get("useContributor".$nr) == 1)
                                {
					$link_front = '<a href="mailto:'.$params->get("emailContributor".$nr).'" target="_blank">';
					$link_back = '</a>';
				}
                                elseif($params->get("useContributor".$nr) == 2)
                                {
					$link_front = '<a href="'.$params->get("linkContributor".$nr).'" target="_blank">';
					$link_back = '</a>';
				}
                                else
                                {
					$link_front = '';
					$link_back = '';
				}
				$contributors[$nr]['title']	= self::htmlEscape($params->get("titleContributor".$nr));
				$contributors[$nr]['name']	= $link_front.self::htmlEscape($params->get("nameContributor".$nr)).$link_back;
			}
		}
		return $contributors;
	}

	/**
	*	Can be used to build help urls.
	**/
	public static function getHelpUrl($view)
	{
		return false;
	}

	/**
	*	Get any component's model
	**/
	public static function getModel($name, $path = JPATH_COMPONENT_SITE, $component = 'Demo', $config = array())
	{
		// fix the name
		$name = self::safeString($name);
		// full path
		$fullPath = $path . '/models';
		// set prefix
		$prefix = $component.'Model';
		// load the model file
		JModelLegacy::addIncludePath($fullPath, $prefix);
		// get instance
		$model = JModelLegacy::getInstance($name, $prefix, $config);
		// if model not found (strange)
		if ($model == false)
		{
			jimport('joomla.filesystem.file');
			// get file path
			$filePath = $path.'/'.$name.'.php';
			$fullPath = $fullPath.'/'.$name.'.php';
			// check if it exists
			if (JFile::exists($filePath))
			{
				// get the file
				require_once $filePath;
			}
			elseif (JFile::exists($fullPath))
			{
				// get the file
				require_once $fullPath;
			}
			// build class names
			$modelClass = $prefix.$name;
			if (class_exists($modelClass))
			{
				// initialize the model
				return new $modelClass($config);
			}
		}
		return $model;
	}

	/**
	*	Add to asset Table
	*/
	public static function setAsset($id,$table)
	{
		$parent = JTable::getInstance('Asset');
		$parent->loadByName('com_demo');
		
		$parentId = $parent->id;
		$name     = 'com_demo.'.$table.'.'.$id;
		$title    = '';

		$asset = JTable::getInstance('Asset');
		$asset->loadByName($name);

		// Check for an error.
		$error = $asset->getError();

		if ($error)
		{
			$this->setError($error);

			return false;
		}
		else
		{
			// Specify how a new or moved node asset is inserted into the tree.
			if ($asset->parent_id != $parentId)
			{
				$asset->setLocation($parentId, 'last-child');
			}

			// Prepare the asset to be stored.
			$asset->parent_id = $parentId;
			$asset->name      = $name;
			$asset->title     = $title;
			// get the default asset rules
			$rules = self::getDefaultAssetRules('com_demo',$table);
			if ($rules instanceof JAccessRules)
			{
				$asset->rules = (string) $rules;
			}

			if (!$asset->check() || !$asset->store())
			{
				JFactory::getApplication()->enqueueMessage($asset->getError(), 'warning');
				return false;
			}
			else
			{
				// Create an asset_id or heal one that is corrupted.
				$object = new stdClass();

				// Must be a valid primary key value.
				$object->id = $id;
				$object->asset_id = (int) $asset->id;

				// Update their asset_id to link to the asset table.
				return JFactory::getDbo()->updateObject('#__demo_'.$table, $object, 'id');
			}
		}
		return false;
	}

	/**
	 *	Gets the default asset Rules for a component/view.
	 */
	protected static function getDefaultAssetRules($component,$view)
	{
		// Need to find the asset id by the name of the component.
		$db = JFactory::getDbo();
		$query = $db->getQuery(true)
			->select($db->quoteName('id'))
			->from($db->quoteName('#__assets'))
			->where($db->quoteName('name') . ' = ' . $db->quote($component));
		$db->setQuery($query);
		$db->execute();
		if ($db->loadRowList())
		{
			// asset alread set so use saved rules
			$assetId = (int) $db->loadResult();
			$result =  JAccess::getAssetRules($assetId);
			if ($result instanceof JAccessRules)
			{
				$_result = (string) $result;
				$_result = json_decode($_result);
				foreach ($_result as $name => &$rule)
				{
					$v = explode('.', $name);
					if ($view !== $v[0])
					{
						// remove since it is not part of this view
						unset($_result->$name);
					}
					else
					{
						// clear the value since we inherit
						$rule = array();
					}
				}
				// check if there are any view values remaining
				if (count($_result))
				{
					$_result = json_encode($_result);
					$_result = array($_result);
					// Instantiate and return the JAccessRules object for the asset rules.
					$rules = new JAccessRules($_result);

					return $rules;
				}
				return $result;
			}
		}
		return JAccess::getAssetRules(0);
	}

	/**
	 * xmlAppend
	 *
	 * @param   SimpleXMLElement   $xml      The XML element reference in which to inject a comment
	 * @param   mixed              $node     A SimpleXMLElement node to append to the XML element reference, or a stdClass object containing a comment attribute to be injected before the XML node and a fieldXML attribute containing a SimpleXMLElement
	 *
	 * @return  null
	 *
	 */
	public static function xmlAppend(&$xml, $node)
	{
		if (!$node)
		{
			// element was not returned
			return;
		}
		switch (get_class($node))
		{
			case 'stdClass':
				if (property_exists($node, 'comment'))
				{
					self::xmlComment($xml, $node->comment);
				}
				if (property_exists($node, 'fieldXML'))
				{
					self::xmlAppend($xml, $node->fieldXML);
				}
				break;
			case 'SimpleXMLElement':
				$domXML = dom_import_simplexml($xml);
				$domNode = dom_import_simplexml($node);
				$domXML->appendChild($domXML->ownerDocument->importNode($domNode, true));
				$xml = simplexml_import_dom($domXML);
				break;
		}
	}

	/**
	 * xmlComment
	 *
	 * @param   SimpleXMLElement   $xml        The XML element reference in which to inject a comment
	 * @param   string             $comment    The comment to inject
	 *
	 * @return  null
	 *
	 */
	public static function xmlComment(&$xml, $comment)
	{
		$domXML = dom_import_simplexml($xml);
		$domComment = new DOMComment($comment);
		$nodeTarget = $domXML->ownerDocument->importNode($domComment, true);
		$domXML->appendChild($nodeTarget);
		$xml = simplexml_import_dom($domXML);
	}

	/**
	 * xmlAddAttributes
	 *
	 * @param   SimpleXMLElement   $xml          The XML element reference in which to inject a comment
	 * @param   array              $attributes   The attributes to apply to the XML element
	 *
	 * @return  null
	 *
	 */
	public static function xmlAddAttributes(&$xml, $attributes = array())
	{
		foreach ($attributes as $key => $value)
		{
			$xml->addAttribute($key, $value);
		}
	}

	/**
	 * xmlAddOptions
	 *
	 * @param   SimpleXMLElement   $xml          The XML element reference in which to inject a comment
	 * @param   array              $options      The options to apply to the XML element
	 *
	 * @return  void
	 *
	 */
	public static function xmlAddOptions(&$xml, $options = array())
	{
		foreach ($options as $key => $value)
		{
			$addOption = $xml->addChild('option');
			$addOption->addAttribute('value', $key);
			$addOption[] = $value;
		}
	}

	/**
	 * Render Bool Button
	 *
	 * @param   array    $args   All the args for the button
	 *                             0) name
	 *                             1) additional (options class) // not used at this time
	 *                             2) default
	 *                             3) yes (name)
	 *                             4) no (name)
	 *
	 * @return  string    The input html of the button
	 *
	 */
	public static function renderBoolButton()
	{
		$args = func_get_args();
		// check if there is additional button class
		$additional = isset($args[1]) ? (string) $args[1] : ''; // not used at this time
		// start the xml
		$buttonXML = new SimpleXMLElement('<field/>');
		// button attributes
		$buttonAttributes = array(
			'type' => 'radio',
			'name' => isset($args[0]) ? self::htmlEscape($args[0]) : 'bool_button',
			'label' => isset($args[0]) ? self::safeString(self::htmlEscape($args[0]), 'Ww') : 'Bool Button', // not seen anyway
			'class' => 'btn-group',
			'filter' => 'INT',
			'default' => isset($args[2]) ? (int) $args[2] : 0);
		// load the haskey attributes
		self::xmlAddAttributes($buttonXML, $buttonAttributes);
		// set the button options
		$buttonOptions = array(
			'1' => isset($args[3]) ? self::htmlEscape($args[3]) : 'JYES',
			'0' => isset($args[4]) ? self::htmlEscape($args[4]) : 'JNO');
		// load the button options
		self::xmlAddOptions($buttonXML, $buttonOptions);

		// get the radio element
		$button = JFormHelper::loadFieldType('radio');

		// run
		$button->setup($buttonXML, $buttonAttributes['default']);

		return $button->input;
	}

	/**
	* 	UIKIT Component Classes
	**/
	public static $uk_components = array(
			'data-uk-grid' => array(
				'grid' ),
			'uk-accordion' => array(
				'accordion' ),
			'uk-autocomplete' => array(
				'autocomplete' ),
			'data-uk-datepicker' => array(
				'datepicker' ),
			'uk-form-password' => array(
				'form-password' ),
			'uk-form-select' => array(
				'form-select' ),
			'data-uk-htmleditor' => array(
				'htmleditor' ),
			'data-uk-lightbox' => array(
				'lightbox' ),
			'uk-nestable' => array(
				'nestable' ),
			'UIkit.notify' => array(
				'notify' ),
			'data-uk-parallax' => array(
				'parallax' ),
			'uk-search' => array(
				'search' ),
			'uk-slider' => array(
				'slider' ),
			'uk-slideset' => array(
				'slideset' ),
			'uk-slideshow' => array(
				'slideshow',
				'slideshow-fx' ),
			'uk-sortable' => array(
				'sortable' ),
			'data-uk-sticky' => array(
				'sticky' ),
			'data-uk-timepicker' => array(
				'timepicker' ),
			'data-uk-tooltip' => array(
				'tooltip' ),
			'uk-placeholder' => array(
				'placeholder' ),
			'uk-dotnav' => array(
				'dotnav' ),
			'uk-slidenav' => array(
				'slidenav' ),
			'uk-form' => array(
				'form-advanced' ),
			'uk-progress' => array(
				'progress' ),
			'upload-drop' => array(
				'upload', 'form-file' )
			);
	
	/**
	* 	Add UIKIT Components
	**/
	public static $uikit = false;

	/**
	* 	Get UIKIT Components
	**/
	public static function getUikitComp($content,$classes = array())
	{
		if (strpos($content,'class="uk-') !== false)
		{
			// reset
			$temp = array();
			foreach (self::$uk_components as $looking => $add)
			{
				if (strpos($content,$looking) !== false)
				{
					$temp[] = $looking;
				}
			}
			// make sure uikit is loaded to config
			if (strpos($content,'class="uk-') !== false)
			{
				self::$uikit = true;
			}
			// sorter
			if (self::checkArray($temp))
			{
				// merger
				if (self::checkArray($classes))
				{
					$newTemp = array_merge($temp,$classes);
					$temp = array_unique($newTemp);
				}
				return $temp;
			}
		}	
		if (self::checkArray($classes))
		{
			return $classes;
		}
		return false;
	} 

	/**
	 * Get a variable 
	 *
	 * @param   string   $table        The table from which to get the variable
	 * @param   string   $where        The value where
	 * @param   string   $whereString  The target/field string where/name
	 * @param   string   $what         The return field
	 * @param   string   $operator     The operator between $whereString/field and $where/value
	 * @param   string   $main         The component in which the table is found
	 *
	 * @return  mix string/int/float
	 *
	 */
	public static function getVar($table, $where = null, $whereString = 'user', $what = 'id', $operator = '=', $main = 'demo')
	{
		if(!$where)
		{
			$where = JFactory::getUser()->id;
		}
		// Get a db connection.
		$db = JFactory::getDbo();
		// Create a new query object.
		$query = $db->getQuery(true);
		$query->select($db->quoteName(array($what)));		
		if (empty($table))
		{
			$query->from($db->quoteName('#__'.$main));
		}
		else
		{
			$query->from($db->quoteName('#__'.$main.'_'.$table));
		}
		if (is_numeric($where))
		{
			$query->where($db->quoteName($whereString) . ' '.$operator.' '.(int) $where);
		}
		elseif (is_string($where))
		{
			$query->where($db->quoteName($whereString) . ' '.$operator.' '. $db->quote((string)$where));
		}
		else
		{
			return false;
		}
		$db->setQuery($query);
		$db->execute();
		if ($db->getNumRows())
		{
			return $db->loadResult();
		}
		return false;
	}

	/**
	 * Get array of variables
	 *
	 * @param   string   $table        The table from which to get the variables
	 * @param   string   $where        The value where
	 * @param   string   $whereString  The target/field string where/name
	 * @param   string   $what         The return field
	 * @param   string   $operator     The operator between $whereString/field and $where/value
	 * @param   string   $main         The component in which the table is found
	 * @param   bool     $unique       The switch to return a unique array
	 *
	 * @return  array
	 *
	 */
	public static function getVars($table, $where = null, $whereString = 'user', $what = 'id', $operator = 'IN', $main = 'demo', $unique = true)
	{
		if(!$where)
		{
			$where = JFactory::getUser()->id;
		}

		if (!self::checkArray($where) && $where > 0)
		{
			$where = array($where);
		}

		if (self::checkArray($where))
		{
			// prep main <-- why? well if $main='' is empty then $table can be categories or users
			if (self::checkString($main))
			{
				$main = '_'.ltrim($main, '_');
			}
			// Get a db connection.
			$db = JFactory::getDbo();
			// Create a new query object.
			$query = $db->getQuery(true);

			$query->select($db->quoteName(array($what)));
			if (empty($table))
			{
				$query->from($db->quoteName('#__'.$main));
			}
			else
			{
				$query->from($db->quoteName('#_'.$main.'_'.$table));
			}
			$query->where($db->quoteName($whereString) . ' '.$operator.' (' . implode(',',$where) . ')');
			$db->setQuery($query);
			$db->execute();
			if ($db->getNumRows())
			{
				if ($unique)
				{
					return array_unique($db->loadColumn());
				}
				return $db->loadColumn();
			}
		}
		return false;
	} 

	public static function isPublished($id,$type)
	{
		if ($type == 'raw')
		{
			$type = 'item';
		}
		$db = JFactory::getDbo();
		$query = $db->getQuery(true);
		$query->select(array('a.published'));
		$query->from('#__demo_'.$type.' AS a');
		$query->where('a.id = '. (int) $id);
		$query->where('a.published = 1');
		$db->setQuery($query);
		$db->execute();
		$found = $db->getNumRows();
		if($found)
		{
			return true;
		}
		return false;
	}

	public static function getGroupName($id)
	{
		$db = JFactory::getDBO();
		$query = $db->getQuery(true);
		$query->select(array('a.title'));
		$query->from('#__usergroups AS a');
		$query->where('a.id = '. (int) $id);
		$db->setQuery($query);
		$db->execute();
		$found = $db->getNumRows();
		if($found)
		{
			return $db->loadResult();
		}
		return $id;
	}

	/**
	*	Get the actions permissions
	**/
	public static function getActions($view,&$record = null,$views = null)
	{
		jimport('joomla.access.access');

		$user	= JFactory::getUser();
		$result	= new JObject;
		$view	= self::safeString($view);
		if (self::checkString($views))
		{
			$views = self::safeString($views);
		}
		// get all actions from component
		$actions = JAccess::getActions('com_demo', 'component');
		// set acctions only set in component settiongs
		$componentActions = array('core.admin','core.manage','core.options','core.export');
		// loop the actions and set the permissions
		foreach ($actions as $action)
		{
			// set to use component default
			$fallback = true;
			if (self::checkObject($record) && isset($record->id) && $record->id > 0 && !in_array($action->name,$componentActions))
			{
				// The record has been set. Check the record permissions.
				$permission = $user->authorise($action->name, 'com_demo.'.$view.'.' . (int) $record->id);
				if (!$permission) // TODO removed && !is_null($permission)
				{
					if ($action->name == 'core.edit' || $action->name == $view.'.edit')
					{
						if ($user->authorise('core.edit.own', 'com_demo.'.$view.'.' . (int) $record->id))
						{
							// If the owner matches 'me' then allow.
							if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
							{
								$result->set($action->name, true);
								// set not to use component default
								$fallback = false;
							}
							else
							{
								$result->set($action->name, false);
								// set not to use component default
								$fallback = false;
							}
						}
						elseif ($user->authorise($view.'edit.own', 'com_demo.'.$view.'.' . (int) $record->id))
						{
							// If the owner matches 'me' then allow.
							if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
							{
								$result->set($action->name, true);
								// set not to use component default
								$fallback = false;
							}
							else
							{
								$result->set($action->name, false);
								// set not to use component default
								$fallback = false;
							}
						}
						elseif ($user->authorise('core.edit.own', 'com_demo'))
						{
							// If the owner matches 'me' then allow.
							if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
							{
								$result->set($action->name, true);
								// set not to use component default
								$fallback = false;
							}
							else
							{
								$result->set($action->name, false);
								// set not to use component default
								$fallback = false;
							}
						}
						elseif ($user->authorise($view.'edit.own', 'com_demo'))
						{
							// If the owner matches 'me' then allow.
							if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
							{
								$result->set($action->name, true);
								// set not to use component default
								$fallback = false;
							}
							else
							{
								$result->set($action->name, false);
								// set not to use component default
								$fallback = false;
							}
						}
					}
				}
				elseif (self::checkString($views) && isset($record->catid) && $record->catid > 0)
				{
					// make sure we use the core. action check for the categories
					if (strpos($action->name,$view) !== false && strpos($action->name,'core.') === false ) {
						$coreCheck		= explode('.',$action->name);
						$coreCheck[0]	= 'core';
						$categoryCheck	= implode('.',$coreCheck);
					}
					else
					{
						$categoryCheck = $action->name;
					}
					// The record has a category. Check the category permissions.
					$catpermission = $user->authorise($categoryCheck, 'com_demo.'.$views.'.category.' . (int) $record->catid);
					if (!$catpermission && !is_null($catpermission))
					{
						if ($action->name == 'core.edit' || $action->name == $view.'.edit')
						{
							if ($user->authorise('core.edit.own', 'com_demo.'.$views.'.category.' . (int) $record->catid))
							{
								// If the owner matches 'me' then allow.
								if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
								{
									$result->set($action->name, true);
									// set not to use component default
									$fallback = false;
								}
								else
								{
									$result->set($action->name, false);
									// set not to use component default
									$fallback = false;
								}
							}
							elseif ($user->authorise($view.'edit.own', 'com_demo.'.$views.'.category.' . (int) $record->catid))
							{
								// If the owner matches 'me' then allow.
								if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
								{
									$result->set($action->name, true);
									// set not to use component default
									$fallback = false;
								}
								else
								{
									$result->set($action->name, false);
									// set not to use component default
									$fallback = false;
								}
							}
							elseif ($user->authorise('core.edit.own', 'com_demo'))
							{
								// If the owner matches 'me' then allow.
								if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
								{
									$result->set($action->name, true);
									// set not to use component default
									$fallback = false;
								}
								else
								{
									$result->set($action->name, false);
									// set not to use component default
									$fallback = false;
								}
							}
							elseif ($user->authorise($view.'edit.own', 'com_demo'))
							{
								// If the owner matches 'me' then allow.
								if (isset($record->created_by) && $record->created_by > 0 && ($record->created_by == $user->id))
								{
									$result->set($action->name, true);
									// set not to use component default
									$fallback = false;
								}
								else
								{
									$result->set($action->name, false);
									// set not to use component default
									$fallback = false;
								}
							}
						}
					}
				}
			}
			// if allowed then fallback on component global settings
			if ($fallback)
			{
				$result->set($action->name, $user->authorise($action->name, 'com_demo'));
			}
		}
		return $result;
	}

	/**
	*	Check if have an json string
	*
	*	@input	string   The json string to check
	*
	*	@returns bool true on success
	**/
	public static function checkJson($string)
	{
		if (self::checkString($string))
		{
			json_decode($string);
			return (json_last_error() === JSON_ERROR_NONE);
		}
		return false;
	}

	/**
	*	Check if have an object with a length
	*
	*	@input	object   The object to check
	*
	*	@returns bool true on success
	**/
	public static function checkObject($object)
	{
		if (isset($object) && is_object($object))
		{
			return count((array)$object) > 0;
		}
		return false;
	}

	/**
	*	Check if have an array with a length
	*
	*	@input	array   The array to check
	*
	*	@returns bool true on success
	**/
	public static function checkArray($array, $removeEmptyString = false)
	{
		if (isset($array) && is_array($array) && count($array) > 0)
		{
			// also make sure the empty strings are removed
			if ($removeEmptyString)
			{
				foreach ($array as $key => $string)
				{
					if (empty($string))
					{
						unset($array[$key]);
					}
				}
				return self::checkArray($array, false);
			}
			return true;
		}
		return false;
	}

	/**
	*	Check if have a string with a length
	*
	*	@input	string   The string to check
	*
	*	@returns bool true on success
	**/
	public static function checkString($string)
	{
		if (isset($string) && is_string($string) && strlen($string) > 0)
		{
			return true;
		}
		return false;
	}

	/**
	*	Check if we are connected
	*	Thanks https://stackoverflow.com/a/4860432/1429677
	*
	*	@returns bool true on success
	**/
	public static function isConnected()
	{
		// If example.com is down, then probably the whole internet is down, since IANA maintains the domain. Right?
		$connected = @fsockopen("www.example.com", 80); 
			// website, port  (try 80 or 443)
		if ($connected)
		{
			//action when connected
			$is_conn = true;
			fclose($connected);
		}
		else
		{
			//action in connection failure
			$is_conn = false;
		}
		return $is_conn;
	}

	/**
	*	Merge an array of array's
	*
	*	@input	array   The arrays you would like to merge
	*
	*	@returns array on success
	**/
	public static function mergeArrays($arrays)
	{
		if(self::checkArray($arrays))
		{
			$arrayBuket = array();
			foreach ($arrays as $array)
			{
				if (self::checkArray($array))
				{
					$arrayBuket = array_merge($arrayBuket, $array);
				}
			}
			return $arrayBuket;
		}
		return false;
	}

	// typo sorry!
	public static function sorten($string, $length = 40, $addTip = true)
	{
		return self::shorten($string, $length, $addTip);
	}

	/**
	*	Shorten a string
	*
	*	@input	string   The you would like to shorten
	*
	*	@returns string on success
	**/
	public static function shorten($string, $length = 40, $addTip = true)
	{
		if (self::checkString($string))
		{
			$initial = strlen($string);
			$words = preg_split('/([\s\n\r]+)/', $string, null, PREG_SPLIT_DELIM_CAPTURE);
			$words_count = count($words);

			$word_length = 0;
			$last_word = 0;
			for (; $last_word < $words_count; ++$last_word)
			{
				$word_length += strlen($words[$last_word]);
				if ($word_length > $length)
				{
					break;
				}
			}

			$newString	= implode(array_slice($words, 0, $last_word));
			$final	= strlen($newString);
			if ($initial != $final && $addTip)
			{
				$title = self::shorten($string, 400 , false);
				return '<span class="hasTip" title="'.$title.'" style="cursor:help">'.trim($newString).'...</span>';
			}
			elseif ($initial != $final && !$addTip)
			{
				return trim($newString).'...';
			}
		}
		return $string;
	}

	/**
	*	Making strings safe (various ways)
	*
	*	@input	string   The you would like to make safe
	*
	*	@returns string on success
	**/
	public static function safeString($string, $type = 'L', $spacer = '_', $replaceNumbers = true)
	{
		if ($replaceNumbers === true)
		{
			// remove all numbers and replace with english text version (works well only up to millions)
			$string = self::replaceNumbers($string);
		}
		// 0nly continue if we have a string
		if (self::checkString($string))
		{
			// create file name without the extention that is safe
			if ($type === 'filename')
			{
				// make sure VDM is not in the string
				$string = str_replace('VDM', 'vDm', $string);
				// Remove anything which isn't a word, whitespace, number
				// or any of the following caracters -_()
				// If you don't need to handle multi-byte characters
				// you can use preg_replace rather than mb_ereg_replace
				// Thanks @Łukasz Rysiak!
				// $string = mb_ereg_replace("([^\w\s\d\-_\(\)])", '', $string);
				$string = preg_replace("([^\w\s\d\-_\(\)])", '', $string);
				// http://stackoverflow.com/a/2021729/1429677
				return preg_replace('/\s+/', ' ', $string);
			}
			// remove all other characters
			$string = trim($string);
			$string = preg_replace('/'.$spacer.'+/', ' ', $string);
			$string = preg_replace('/\s+/', ' ', $string);
			$string = preg_replace("/[^A-Za-z ]/", '', $string);
			// select final adaptations
			if ($type === 'L' || $type === 'strtolower')
			{
				// replace white space with underscore
				$string = preg_replace('/\s+/', $spacer, $string);
				// default is to return lower
				return strtolower($string);
			}
			elseif ($type === 'W')
			{
				// return a string with all first letter of each word uppercase(no undersocre)
				return ucwords(strtolower($string));
			}
			elseif ($type === 'w' || $type === 'word')
			{
				// return a string with all lowercase(no undersocre)
				return strtolower($string);
			}
			elseif ($type === 'Ww' || $type === 'Word')
			{
				// return a string with first letter of the first word uppercase and all the rest lowercase(no undersocre)
				return ucfirst(strtolower($string));
			}
			elseif ($type === 'WW' || $type === 'WORD')
			{
				// return a string with all the uppercase(no undersocre)
				return strtoupper($string);
			}
			elseif ($type === 'U' || $type === 'strtoupper')
			{
				// replace white space with underscore
				$string = preg_replace('/\s+/', $spacer, $string);
				// return all upper
				return strtoupper($string);
			}
			elseif ($type === 'F' || $type === 'ucfirst')
			{
				// replace white space with underscore
				$string = preg_replace('/\s+/', $spacer, $string);
				// return with first caracter to upper
				return ucfirst(strtolower($string));
			}
			elseif ($type === 'cA' || $type === 'cAmel' || $type === 'camelcase')
			{
				// convert all words to first letter uppercase
				$string = ucwords(strtolower($string));
				// remove white space
				$string = preg_replace('/\s+/', '', $string);
				// now return first letter lowercase
				return lcfirst($string);
			}
			// return string
			return $string;
		}
		// not a string
		return '';
	}

	public static function htmlEscape($var, $charset = 'UTF-8', $shorten = false, $length = 40)
	{
		if (self::checkString($var))
		{
			$filter = new JFilterInput();
			$string = $filter->clean(html_entity_decode(htmlentities($var, ENT_COMPAT, $charset)), 'HTML');
			if ($shorten)
			{
           		return self::shorten($string,$length);
			}
			return $string;
		}
		else
		{
			return '';
		}
	}

	public static function replaceNumbers($string)
	{
		// set numbers array
		$numbers = array();
		// first get all numbers
		preg_match_all('!\d+!', $string, $numbers);
		// check if we have any numbers
		if (isset($numbers[0]) && self::checkArray($numbers[0]))
		{
			foreach ($numbers[0] as $number)
			{
				$searchReplace[$number] = self::numberToString((int)$number);
			}
			// now replace numbers in string
			$string = str_replace(array_keys($searchReplace), array_values($searchReplace),$string);
			// check if we missed any, strange if we did.
			return self::replaceNumbers($string);
		}
		// return the string with no numbers remaining.
		return $string;
	}

	/**
	*	Convert an integer into an English word string
	*	Thanks to Tom Nicholson <http://php.net/manual/en/function.strval.php#41988>
	*
	*	@input	an int
	*	@returns a string
	**/
	public static function numberToString($x)
	{
		$nwords = array( "zero", "one", "two", "three", "four", "five", "six", "seven",
			"eight", "nine", "ten", "eleven", "twelve", "thirteen",
			"fourteen", "fifteen", "sixteen", "seventeen", "eighteen",
			"nineteen", "twenty", 30 => "thirty", 40 => "forty",
			50 => "fifty", 60 => "sixty", 70 => "seventy", 80 => "eighty",
			90 => "ninety" );

		if(!is_numeric($x))
		{
			$w = $x;
		}
		elseif(fmod($x, 1) != 0)
		{
			$w = $x;
		}
		else
		{
			if($x < 0)
			{
				$w = 'minus ';
				$x = -$x;
			}
			else
			{
				$w = '';
				// ... now $x is a non-negative integer.
			}

			if($x < 21)   // 0 to 20
			{
				$w .= $nwords[$x];
			}
			elseif($x < 100)  // 21 to 99
			{ 
				$w .= $nwords[10 * floor($x/10)];
				$r = fmod($x, 10);
				if($r > 0)
				{
					$w .= ' '. $nwords[$r];
				}
			}
			elseif($x < 1000)  // 100 to 999
			{
				$w .= $nwords[floor($x/100)] .' hundred';
				$r = fmod($x, 100);
				if($r > 0)
				{
					$w .= ' and '. self::numberToString($r);
				}
			}
			elseif($x < 1000000)  // 1000 to 999999
			{
				$w .= self::numberToString(floor($x/1000)) .' thousand';
				$r = fmod($x, 1000);
				if($r > 0)
				{
					$w .= ' ';
					if($r < 100)
					{
						$w .= 'and ';
					}
					$w .= self::numberToString($r);
				}
			} 
			else //  millions
			{    
				$w .= self::numberToString(floor($x/1000000)) .' million';
				$r = fmod($x, 1000000);
				if($r > 0)
				{
					$w .= ' ';
					if($r < 100)
					{
						$w .= 'and ';
					}
					$w .= self::numberToString($r);
				}
			}
		}
		return $w;
	}

	/**
	*	Random Key
	*
	*	@returns a string
	**/
	public static function randomkey($size)
	{
		$bag = "abcefghijknopqrstuwxyzABCDDEFGHIJKLLMMNOPQRSTUVVWXYZabcddefghijkllmmnopqrstuvvwxyzABCEFGHIJKNOPQRSTUWXYZ";
		$key = array();
		$bagsize = strlen($bag) - 1;
		for ($i = 0; $i < $size; $i++)
		{
			$get = rand(0, $bagsize);
			$key[] = $bag[$get];
		}
		return implode($key);
	}
}