<?php
/**
 * @package    Joomla.Members.Manager
 *
 * @created    6th September, 2015
 * @author     Llewellyn van der Merwe <https://www.joomlacomponentbuilder.com/>
 * @github     Joomla Members Manager <https://github.com/vdm-io/Joomla-Members-Manager>
 * @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');

/**
 * Membersmanager component helper.
 */
abstract class MembersmanagerHelper
{

	/**
	*	The Global Admin Event Method.
	**/
	public static function globalEvent($document)
	{
		// the Session keeps track of all data related to the current session of this user
		self::loadSession();
	}  

	/**
	* the params
	**/
	protected static $params;

	/**
	* set the session defaults if not set
	**/
	protected static function setSessionDefaults()
	{
		// noting for now
		return true;
	}

	/**
	* 	the Butler
	**/
	public static $session = array();

	/**
	* 	the Butler Assistant 
	**/
	protected static $localSession = array();

	/**
	* 	start a session if not already set, and load with data
	**/
	public static function loadSession()
	{
		if (!isset(self::$session) || !self::checkObject(self::$session))
		{
			self::$session = JFactory::getSession();
		}
		// set the defaults
		self::setSessionDefaults();
	}

	/**
	* 	give Session more to keep
	**/
	public static function set($key, $value)
	{
		// set to local memory to speed up program
		self::$localSession[$key] = $value;
		// load to session for later use
		return self::$session->set($key, self::$localSession[$key]);
	}

	/**
	* 	get info from Session
	**/
	public static function get($key, $default = null)
	{
		// check if in local memory
		if (!isset(self::$localSession[$key]))
		{
			// set to local memory to speed up program
			self::$localSession[$key] = self::$session->get($key, $default);
		}
		return self::$localSession[$key];
	}


	/**
	*	Get the file path or url
	* 
	*	@param  string   $type              The (url/path) type to return
	*	@param  string   $target            The Params Target name (if set)
	*	@param  string   $default           The default path if not set in Params (fallback path)
	*	@param  bool     $createIfNotSet    The switch to create the folder if not found
	*
	*	@return  string    On success the path or url is returned based on the type requested
	* 
	*/
	public static function getFolderPath($type = 'path', $target = 'folderpath', $default = JPATH_SITE . '/images/', $createIfNotSet = true)
	{
		// get the global settings
		if (!self::checkObject(self::$params))
		{
			self::$params = JComponentHelper::getParams('com_membersmanager');
		}
		$folderPath = self::$params->get($target, $default);
		jimport('joomla.filesystem.folder');
		// create the folder if it does not exist
		if ($createIfNotSet && !JFolder::exists($folderPath))
		{
			JFolder::create($folderPath);
		}
		// return the url
		if ('url' === $type)
		{
			if (strpos($folderPath, JPATH_SITE) !== false)
			{
				$folderPath = trim( str_replace( JPATH_SITE, '', $folderPath), '/');
				return JURI::root() . $folderPath . '/';
			}
			// since the path is behind the root folder of the site, return only the root url (may be used to build the link)
			return JURI::root();
		}
		// sanitize the path
		return '/' . trim( $folderPath, '/' ) . '/';
	}


	/**
	 * @param $fileName
	 * @param $fileFormat
	 * @param $target
	 * @param $path
	 * @param $fullPath
	 * @return bool
	 */
	public static function resizeImage($fileName, $fileFormat, $target, $path, $fullPath)
	{
		// get the global settings
		if (!self::checkObject(self::$params))
		{
			self::$params = JComponentHelper::getParams('com_membersmanager');
		}
		// first check if we should resize this target
		if (1 == self::$params->get('crop_'.$target, 0))
		{
			// load the size to be set
			$height = self::$params->get($target.'_height', 'not_set');
			$width = self::$params->get($target.'_width', 'not_set');
			// get image properties
			$image = self::getImageFileProperties($fileName.'.'.$fileFormat, $path);
			// make sure we have an object
			if (self::checkObject($image))
			{
				if ($width !== 'not_set' && $height !== 'not_set' && ($image->width != $width || $image->height != $height))
				{
					// if image is huge and should only be scaled, resize it on the fly
					if(($image->width > 900 || $image->height > 700) && ($height == 0 || $width == 0))
					{
						if($fileFormat == "jpg" || $fileFormat == "jpeg" )
						{
							$src = imagecreatefromjpeg($fullPath);
						}
						elseif($fileFormat == "png")
						{
							$src = imagecreatefrompng($fullPath);
						}
						elseif($fileFormat == "gif")
						{
							$src = imagecreatefromgif($fullPath);
						}
						else
						{
							return false;
						}
						if ($height != 0)
						{
							$hRatio = $image->height / $height;
						}
						if ($width != 0)
						{
							$wRatio = $image->width / $width;
						}
						if (isset($hRatio) && isset($wRatio))
						{
							$maxRatio	= max($wRatio, $hRatio);
						}
						elseif (isset($wRatio))
						{
							$maxRatio	= $wRatio;
						}
						elseif (isset($hRatio))
						{
							$maxRatio	= $hRatio;
						}
						if ($maxRatio > 1)
						{
							$newwidth	= $image->width / $maxRatio;
							$newheight	= $image->height / $maxRatio;
						}
						else
						{
							$newwidth	= $image->width;
							$newheight	= $image->height;
						}

						$tmp			= imagecreatetruecolor($newwidth, $newheight);
						$backgroundColor	= imagecolorallocate($tmp, 255, 255, 255);

						imagefill($tmp, 0, 0, $backgroundColor);
						imagecopyresampled($tmp, $src, 0, 0, 0, 0,$newwidth, $newheight, $image->width, $image->height);
						imagejpeg($tmp, $fullPath, 100);
						imagedestroy($src);
						imagedestroy($tmp);
					}
					// only continue if image should be cropped
					if ($height != 0 && $width != 0)
					{
						// Include wideimage - http://wideimage.sourceforge.net
						require_once(JPATH_ADMINISTRATOR . '/components/com_membersmanager/helpers/wideimage/WideImage.php');
						$builder = WideImage::load($fullPath);
						$resized = $builder->resize($width, $height, 'outside')->crop('center', 'middle', $width, $height);
						$resized->saveToFile($fullPath);
					}
				}
				return true;
			}
		}
		return false;
	}

	/**
	 * @param $image
	 * @return bool|stdClass
	 */
	public static function getImageFileProperties($image, $folder = false)
	{
		if ($folder)
		{
			$localfolder = $folder;
		}
		else
		{
			$setimagesfolder = JComponentHelper::getParams('com_membersmanager')->get('setimagesfolder', 1);
			if (2 == $setimagesfolder)
			{
				$localfolder = JComponentHelper::getParams('com_membersmanager')->get('imagesfolder', JPATH_SITE.'/images/membersmanager');
			}
			elseif (1 == $setimagesfolder)
			{
				$localfolder =  JPATH_SITE.'/images';
			}
			else // just in-case :)
			{
				$localfolder =  JPATH_SITE.'/images/membersmanager';
			}
		}
		// import all needed classes
		jimport('joomla.filesystem.folder');
		jimport('joomla.filesystem.file');
		jimport('joomla.image.image');
		// setup the folder if it does not exist
		if (JFolder::exists($localfolder) && JFile::exists($localfolder.'/'.$image))
		{
			$properties = JImage::getImageFileProperties($localfolder.'/'.$image);
			// check if we have properties
			if (self::checkObject($properties))
			{
				// remove the server path
				$imagePath = trim(str_replace(JPATH_SITE,'',$localfolder),'/').'/'.$image;
				// now add the src path to show the image
				$properties->src = JURI::root().$imagePath;
				// return the image properties
				return $properties;
			}
		}
		return false;
	}


	/**
	 * @return array of link options
	 */
	public static function getLinkOptions($lock = 0, $session = 0)
	{
		// get the global settings
		if (!self::checkObject(self::$params))
		{
			self::$params = JComponentHelper::getParams('com_membersmanager');
		}
		$linkoptions = self::$params->get('link_option', null);
		// set the options to array
		$options = array('lock' => $lock, 'session' => $session);
		if (MembersmanagerHelper::checkArray($linkoptions))
		{
			if (in_array(1, $linkoptions))
			{
				// lock the filename
				$options['lock'] = 1;
			}
			if (in_array(2, $linkoptions))
			{
				// add session to the links
				$options['session'] = 1;
			}
		}
		return $options;
	}

	/**
	* Get the html/link of the image
	* 
	* @param  object   $item    The item to get image for
	* @param  string   $target   The target in the item to use
	* @param  string   $name   The name target in item to use
	* @param  string   $filelink   The file link
	*
	* @return  string    image html/link
	* 
	*/
	public static function getImageLink(&$item, $target, $name = 'name', $filelink = null, $html = true)
	{
		// check that we have a value
		if (isset($item->{$target}) && MembersmanagerHelper::checkString($item->{$target}))
		{
			// load the file link path if not set
			if (!$filelink)
			{
				$filelink = self::getFolderPath('url');
			}
			// set image link
			if (strpos($item->{$target}, '_') !== false)
			{
				$extention = explode('_', $item->{$target});
				$actualName = self::safeString($target, 'w');
				if (strpos($item->{$target}, 'VDM') !== false)
				{
					$fileNameArray = explode('VDM', $item->{$target});
					if (isset($fileNameArray[1]) && MembersmanagerHelper::checkString($fileNameArray[1]))
					{
						$actualName = $fileNameArray[1];
					}
				}
				// check if we have the extention
				if (isset($extention[2]))
				{
					// set the link
					$link = $filelink . $item->{$target} . '.' . $extention[2];
					// return ready html
					if ($html)
					{
						return '<img src="' . $link . '" alt="' . $actualName . ' ' . $item->{$name} . '" data-uk-tooltip title="' . $item->{$name} . '"/>';
					}
					// return just the link
					else
					{
						return $link;
					}
				}
			}
		}
		return false;
	}

	/**
	* Get the edit button
	* 
	* @param  int        $item           The item to edit
	* @param  string   $view           The type of item to edit
	* @param  string   $views         The list view controller name
	* @param  string   $ref              The return path
	* @param  string   $headsup    The message to show on click of button
	*
	* @return  string    On success the full html edit button
	* 
	*/
	public static function  getEditButton(&$item, $view, $views, $ref = '', $headsup = 'COM_MEMBERSMANAGER_ALL_UNSAVED_WORK_ON_THIS_PAGE_WILL_BE_LOST_ARE_YOU_SURE_YOU_WANT_TO_CONTINUE')
	{
		// check that we have the ID
		if (self::checkObject($item) && isset($item->id))
		{
			$id = (int) $item->id;
			// check if the checked_out is available
			if (isset($item->checked_out))
			{
				$checked_out = (int) $item->checked_out;
			}
		}
		elseif (self::checkArray($item) && isset($item['id']))
		{
			$id = (int) $item['id'];
			// check if the checked_out is available
			if (isset($item['checked_out']))
			{
				$checked_out = (int) $item['checked_out'];
			}
		}
		elseif (is_numeric($item))
		{
			$id = (int) $item;
		}
		// check ID
		if (isset($id) && $id > 0)
		{
			// can edit
			if (JFactory::getUser()->authorise($view.'.edit', 'com_membersmanager.'.$view.'.' . (int) $id))
			{
				// set the edit link
				$edit = "index.php?option=com_membersmanager&view=".$views."&task=".$view.".edit&id=".$id.$ref;
				// set the link title
				$title = self::safeString(JText::_('COM_MEMBERSMANAGER_EDIT').' '.$view, 'W');
				// check that there is a check message
				if (self::checkString($headsup))
				{
					$href = 'onclick="UIkit.modal.confirm(\''.JText::_($headsup).'\', function(){ window.location.href = \'' . $edit . '\' })"  href="javascript:void(0)"';
				}
				else
				{
					$href = 'href="' . $edit . '"';
				}
				// check if it is checked out
				if (isset($checked_out) && $checked_out > 0)
				{
					// is this user the one who checked it out
					if ($checked_out == JFactory::getUser()->id)
					{
						return ' <a ' . $href . ' class="uk-icon-lock" title="' . $title . '"></a>';
					}
					return ' <a href="#" disabled class="uk-icon-lock" title="' . JText::sprintf('COM_MEMBERSMANAGER__HAS_BEEN_CHECKED_OUT_BY_S', self::safeString($view, 'W'), JFactory::getUser($checked_out)->name) . '"></a>'; 
				}
				// return normal edit link
				return ' <a ' . $href . ' class="uk-icon-pencil" title="' . $title . '"></a>';
			}
		}
		return '';
	}

	/**
	*	Load the Component xml manifest.
	**/
	public static function manifest()
	{
		$manifestUrl = JPATH_ADMINISTRATOR."/components/com_membersmanager/membersmanager.xml";
		return simplexml_load_file($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_membersmanager');
		// 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) == 1 || $params->get("showContributor".$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;
	}

	/**
	*	Configure the Linkbar.
	**/
	public static function addSubmenu($submenu)
	{
		// load user for access menus
		$user = JFactory::getUser();
		// load the submenus to sidebar
		
		if ($user->authorise('member.access', 'com_membersmanager') && $user->authorise('member.submenu', 'com_membersmanager'))
		{
			JHtmlSidebar::addEntry(JText::_('COM_MEMBERSMANAGER_SUBMENU_MEMBERS'), 'index.php?option=com_membersmanager&view=members', $submenu === 'members');
		}
		if ($user->authorise('country.access', 'com_membersmanager') && $user->authorise('country.submenu', 'com_membersmanager'))
		{
			JHtmlSidebar::addEntry(JText::_('COM_MEMBERSMANAGER_SUBMENU_COUNTRIES'), 'index.php?option=com_membersmanager&view=countries', $submenu === 'countries');
		}
		if ($user->authorise('currency.access', 'com_membersmanager') && $user->authorise('currency.submenu', 'com_membersmanager'))
		{
			JHtmlSidebar::addEntry(JText::_('COM_MEMBERSMANAGER_SUBMENU_CURRENCIES'), 'index.php?option=com_membersmanager&view=currencies', $submenu === 'currencies');
		}
	}

	/**
	 * Greate user and update given table
	 */
	public static function createUser($new)
	{
		// load the user component language files if there is an error.
		$lang = JFactory::getLanguage();
		$extension = 'com_users';
		$base_dir = JPATH_SITE;
		$language_tag = 'en-GB';
		$reload = true;
		$lang->load($extension, $base_dir, $language_tag, $reload);
		// load the user regestration model
		$model = self::getModel('registration', JPATH_ROOT. '/components/com_users', 'Users');
		// make sure no activation is needed
		$useractivation = self::setParams('com_users','useractivation',0);
		// make sure password is send
		$sendpassword = self::setParams('com_users','sendpassword',1);
		// Check if password was set
		if (isset($new['password']) && isset($new['password2']) && self::checkString($new['password']) && self::checkString($new['password2']))
		{
			// Use the users passwords
			$password = $new['password'];
			$password2 = $new['password2'];
		}
		else
		{
			// Set random password
			$password = self::randomkey(8);
			$password2 = $password;
		}
		// set username if not set
		if (!isset($new['username']) || !self::checkString($new['username']))
		{
			$new['username'] = self::safeString($new['name']);
		}
		// linup new user data
		$data = array(
			'username' => $new['username'],
			'name' => $new['name'],
			'email1' => $new['email'],
			'password1' => $password, // First password field
			'password2' => $password2, // Confirm password field
			'block' => 0 );
		// register the new user
		$userId = $model->register($data);
		// set activation back to default
		self::setParams('com_users','useractivation',$useractivation);
		// set send password back to default
		self::setParams('com_users','sendpassword',$sendpassword);
		// if user is created
		if ($userId > 0)
		{
			return $userId;
		}
		return $model->getError();
	}

	protected static function setParams($component,$target,$value)
	{
		// Get the params and set the new values
		$params = JComponentHelper::getParams($component);
		$was = $params->get($target, null);
		if ($was != $value)
		{
			$params->set($target, $value);
			// Get a new database query instance
			$db = JFactory::getDBO();
			$query = $db->getQuery(true);
			// Build the query
			$query->update('#__extensions AS a');
			$query->set('a.params = ' . $db->quote((string)$params));
			$query->where('a.element = ' . $db->quote((string)$component));
			
			// Execute the query
			$db->setQuery($query);
			$db->query();
		}
		return $was;
	}

	/**
	 * Update user values
	 */
	public static function updateUser($new)
	{
		// load the user component language files if there is an error.
		$lang = JFactory::getLanguage();
		$extension = 'com_users';
		$base_dir = JPATH_ADMINISTRATOR;
		$language_tag = 'en-GB';
		$reload = true;
		$lang->load($extension, $base_dir, $language_tag, $reload);
		// load the user model
		$model = self::getModel('user', JPATH_ADMINISTRATOR . '/components/com_users', 'Users');
		// Check if password was set
		if (isset($new['password']) && isset($new['password2']) && self::checkString($new['password']) && self::checkString($new['password2']))
		{
			// Use the users passwords
			$password = $new['password'];
			$password2 = $new['password2'];
		}
		// set username
		if (isset($new['username']) && self::checkString($new['username']))
		{
			$new['username'] = self::safeString($new['username']);
		}
		else
		{
			$new['username'] = self::safeString($new['name']);
		}
		// linup update user data
		$data = array(
			'id' => $new['id'],
			'username' => $new['username'],
			'name' => $new['name'],
			'email' => $new['email'],
			'password1' => $password, // First password field
			'password2' => $password2, // Confirm password field
			'block' => 0 );
		// set groups if found
		if (isset($new['groups']) && self::checkArray($new['groups']))
		{
			$data['groups'] = $new['groups'];
		}
		// register the new user
		$done = $model->save($data);
		// if user is updated
		if ($done)
		{
			return $new['id'];
		}
		return $model->getError();
	} 

	/**
	 *  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;
	} 

	/**
	 * Prepares the xml document
	 */
	public static function xls($rows,$fileName = null,$title = null,$subjectTab = null,$creator = 'Joomla Component Builder',$description = null,$category = null,$keywords = null,$modified = null)
	{
		// set the user
		$user = JFactory::getUser();
		
		// set fieldname if not set
		if (!$fileName)
		{
			$fileName = 'exported_'.JFactory::getDate()->format('jS_F_Y');
		}
		// set modiefied if not set
		if (!$modified)
		{
			$modified = $user->name;
		}
		// set title if not set
		if (!$title)
		{
			$title = 'Book1';
		}
		// set tab name if not set
		if (!$subjectTab)
		{
			$subjectTab = 'Sheet1';
		}

		// make sure the file is loaded
		JLoader::import('PHPExcel', JPATH_COMPONENT_ADMINISTRATOR . '/helpers');

		// Create new PHPExcel object
		$objPHPExcel = new PHPExcel();

		// Set document properties
		$objPHPExcel->getProperties()->setCreator($creator)
			->setCompany('Joomla Component Builder')
			->setLastModifiedBy($modified)
			->setTitle($title)
			->setSubject($subjectTab);
		if (!$description)
		{
			$objPHPExcel->getProperties()->setDescription($description);
		}
		if (!$keywords)
		{
			$objPHPExcel->getProperties()->setKeywords($keywords);
		}
		if (!$category)
		{
			$objPHPExcel->getProperties()->setCategory($category);
		}

		// Some styles
		$headerStyles = array(
			'font'  => array(
				'bold'  => true,
				'color' => array('rgb' => '1171A3'),
				'size'  => 12,
				'name'  => 'Verdana'
		));
		$sideStyles = array(
			'font'  => array(
				'bold'  => true,
				'color' => array('rgb' => '444444'),
				'size'  => 11,
				'name'  => 'Verdana'
		));
		$normalStyles = array(
			'font'  => array(
				'color' => array('rgb' => '444444'),
				'size'  => 11,
				'name'  => 'Verdana'
		));

		// Add some data
		if (self::checkArray($rows))
		{
			$i = 1;
			foreach ($rows as $array){
				$a = 'A';
				foreach ($array as $value){
					$objPHPExcel->setActiveSheetIndex(0)->setCellValue($a.$i, $value);
					if ($i == 1){
						$objPHPExcel->getActiveSheet()->getColumnDimension($a)->setAutoSize(true);
						$objPHPExcel->getActiveSheet()->getStyle($a.$i)->applyFromArray($headerStyles);
						$objPHPExcel->getActiveSheet()->getStyle($a.$i)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
					} elseif ($a === 'A'){
						$objPHPExcel->getActiveSheet()->getStyle($a.$i)->applyFromArray($sideStyles);
					} else {
						$objPHPExcel->getActiveSheet()->getStyle($a.$i)->applyFromArray($normalStyles);
					}
					$a++;
				}
				$i++;
			}
		}
		else
		{
			return false;
		}

		// Rename worksheet
		$objPHPExcel->getActiveSheet()->setTitle($subjectTab);

		// Set active sheet index to the first sheet, so Excel opens this as the first sheet
		$objPHPExcel->setActiveSheetIndex(0);

		// Redirect output to a client's web browser (Excel5)
		header('Content-Type: application/vnd.ms-excel');
		header('Content-Disposition: attachment;filename="'.$fileName.'.xls"');
		header('Cache-Control: max-age=0');
		// If you're serving to IE 9, then the following may be needed
		header('Cache-Control: max-age=1');

		// If you're serving to IE over SSL, then the following may be needed
		header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
		header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
		header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
		header ('Pragma: public'); // HTTP/1.0

		$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
		$objWriter->save('php://output');
		jexit();
	}

	/**
	 * Get CSV Headers
	 */
	public static function getFileHeaders($dataType)
	{
		// make sure these files are loaded
		JLoader::import('PHPExcel', JPATH_COMPONENT_ADMINISTRATOR . '/helpers');
		JLoader::import('ChunkReadFilter', JPATH_COMPONENT_ADMINISTRATOR . '/helpers/PHPExcel/Reader');
		// get session object
		$session = JFactory::getSession();
		$package = $session->get('package', null);
		$package = json_decode($package, true);
		// set the headers
		if(isset($package['dir']))
		{
			$chunkFilter = new PHPExcel_Reader_chunkReadFilter();
			// only load first three rows
			$chunkFilter->setRows(2,1);
			// identify the file type
			$inputFileType = PHPExcel_IOFactory::identify($package['dir']);
			// create the reader for this file type
			$excelReader = PHPExcel_IOFactory::createReader($inputFileType);
			// load the limiting filter
			$excelReader->setReadFilter($chunkFilter);
			$excelReader->setReadDataOnly(true);
			// load the rows (only first three)
			$excelObj = $excelReader->load($package['dir']);
			$headers = array();
			foreach ($excelObj->getActiveSheet()->getRowIterator() as $row)
			{
				if($row->getRowIndex() == 1)
				{
					$cellIterator = $row->getCellIterator();
					$cellIterator->setIterateOnlyExistingCells(false);
					foreach ($cellIterator as $cell)
					{
						if (!is_null($cell))
						{
							$headers[$cell->getColumn()] = $cell->getValue();
						}
					}
					$excelObj->disconnectWorksheets();
					unset($excelObj);
					break;
				}
			}
			return $headers;
		}
		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 = '=', $main = 'membersmanager')
	{
		if(!$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 = 'membersmanager', $unique = true)
	{
		if(!$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 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;
	}

	public static function isPublished($id,$type)
	{
		if ($type == 'raw')
		{
			$type = 'item';
		}
		$db = JFactory::getDbo();
		$query = $db->getQuery(true);
		$query->select(array('a.published'));
		$query->from('#__membersmanager_'.$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_membersmanager', '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_membersmanager.'.$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_membersmanager.'.$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($view.'edit.own', 'com_membersmanager.'.$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_membersmanager'))
						{
							// 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($view.'edit.own', 'com_membersmanager'))
						{
							// If the owner matches 'me' then allow.
							if (isset($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_membersmanager.'.$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_membersmanager.'.$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($view.'edit.own', 'com_membersmanager.'.$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_membersmanager'))
							{
								// 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($view.'edit.own', 'com_membersmanager'))
							{
								// If the owner matches 'me' then allow.
								if (isset($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_membersmanager'));
			}
		}
		return $result;
	}

	/**
	*	Get any component's model
	**/
	public static function getModel($name, $path = JPATH_COMPONENT_ADMINISTRATOR, $component = 'Membersmanager', $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_membersmanager');
		
		$parentId = $parent->id;
		$name     = 'com_membersmanager.'.$table.'.'.$id;
		$title    = '';

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

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

		if ($error)
		{
			return false;
		}
		else
		{
			// Specify how a new or moved node asset is inserted into the tree.
			if ($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
			$rules = self::getDefaultAssetRules('com_membersmanager',$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('#__membersmanager_'.$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
						$rule = array();
					}
				}
				// check if there are any view values remaining
				if (count((array)$_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;
	}

	/**
	*	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($array) && count((array)$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);
			$words_count = count((array)$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, $keepOnlyCharacters = true)
	{
		if ($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+/', ' ', $string);
			// remove all and keep only characters
			if ($keepOnlyCharacters)
			{
				$string = preg_replace("/[^A-Za-z ]/", '', $string);
			}
			// keep both numbers and characters
			else
			{
				$string = preg_replace("/[^A-Za-z0-9 ]/", '', $string);
			}
			// select final adaptations
			if ($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);
	}

	/**
	 *	Get The Encryption Keys
	 *
	 *	@param  string        $type     The type of key
	 *	@param  string/bool   $default  The return value if no key was found
	 *
	 *	@return  string   On success
	 *
	 **/
	public static function getCryptKey($type, $default = false)
	{
		// Get the global params
		$params = JComponentHelper::getParams('com_membersmanager', true);
		// Medium Encryption Type
		if ('medium' === $type)
		{
			// check if medium key is already loaded.
			if (self::checkString(self::$mediumCryptKey))
			{
				return (self::$mediumCryptKey !== 'none') ? trim(self::$mediumCryptKey) : $default;
			}
			// get the path to the medium encryption key.
			$medium_key_path = $params->get('medium_key_path', null);
			if (self::checkString($medium_key_path))
			{
				// load the key from the file.
				if (self::getMediumCryptKey($medium_key_path))
				{
					return trim(self::$mediumCryptKey);
				}
			}
		}

		return $default;
	}


	/**
	 *	The Medium Encryption Key
	 *
	 *	@var  string/bool
	 **/
	protected static $mediumCryptKey = false;

	/**
	 *	Get The Medium Encryption Key
	 *
	 *	@param   string    $path  The path to the medium crypt key folder
	 *
	 *	@return  string    On success
	 *
	 **/
	public static function getMediumCryptKey($path)
	{
		// Prep the path a little
		$path = '/'. trim(str_replace('//', '/', $path), '/');
		jimport('joomla.filesystem.folder');
		/// Check if folder exist
		if (!JFolder::exists($path))
		{
			// Lock key.
			self::$mediumCryptKey = 'none';
			// Set the error message.
			JFactory::getApplication()->enqueueMessage(JText::_('COM_MEMBERSMANAGER_CONFIG_MEDIUM_KEY_PATH_ERROR'), 'Error');
			return false;
		}
		// Create FileName and set file path
		$filePath = $path.'/.'.md5('medium_crypt_key_file');
		// Check if we already have the file set
		if ((self::$mediumCryptKey = @file_get_contents($filePath)) !== FALSE)
		{
			return true;
		}
		// Set the key for the first time
		self::$mediumCryptKey = self::randomkey(128);
		// Open the key file
		$fh = @fopen($filePath, 'w');
		if (!is_resource($fh))
		{
			// Lock key.
			self::$mediumCryptKey = 'none';
			// Set the error message.
			JFactory::getApplication()->enqueueMessage(JText::_('COM_MEMBERSMANAGER_CONFIG_MEDIUM_KEY_PATH_ERROR'), 'Error');
			return false;
		}
		// Write to the key file
		if (!fwrite($fh, self::$mediumCryptKey))
		{
			// Close key file.
			fclose($fh);
			// Lock key.
			self::$mediumCryptKey = 'none';
			// Set the error message.
			JFactory::getApplication()->enqueueMessage(JText::_('COM_MEMBERSMANAGER_CONFIG_MEDIUM_KEY_PATH_ERROR'), 'Error');
			return false;
		}
		// Close key file.
		fclose($fh);
		// Key is set.
		return true;
	}
}
