<?php

/**
 * JEvents Component for Joomla! 3.x
 *
 * @version     $Id: cpanel.php 3546 2012-04-20 09:08:44Z geraintedwards $
 * @package     JEvents
 * @copyright   Copyright (C) 2008-2019 GWE Systems Ltd
 * @license     GNU/GPLv2, see http://www.gnu.org/licenses/gpl-2.0.html
 * @link        http://www.jevents.net
 */
defined('JPATH_BASE') or die('Direct Access to this location is not allowed.');

jimport('joomla.application.component.controlleradmin');

class AdminCpanelController extends JControllerAdmin
{

	/**
	 * Controler for the Control Panel
	 * @param array		configuration
	 */
	function __construct($config = array())
	{
		parent::__construct($config);
		$this->registerTask('show', 'cpanel');
		$this->registerDefaultTask("cpanel");

	}

	function cpanel()
	{
		
		$db = JFactory::getDbo();
                
                // Enable Jevents Installer Plugin
               // $query = "UPDATE #__extensions SET enabled=1 WHERE folder='installer' and type='plugin' and element='jeventsinstaller'";
               // $db->setQuery($query);
               // $db->execute();
            
                // Make sure RSVP Pro and RSVP are not both enabled
                $rsvpplugin = JPluginHelper::isEnabled("jevents", "jevrsvp");
                $rsvpproplugin = JPluginHelper::isEnabled("jevents", "jevrsvppro");
                if ($rsvpproplugin && $rsvpplugin) {
                    JFactory::getApplication()->enqueueMessage(JText::_("JEV_INSTALLED_RSVP_AND_RSVPPRO_INCOMPATIBLE"), "ERROR");
                }
                
		// Add one category by default if none exist already
		$sql = "SELECT id from #__categories where extension='com_jevents'";
		$db->setQuery($sql);
		$catid = $db->loadResult();
		
		if (!$catid) {
			JLoader::register('JEventsCategory',JEV_ADMINPATH."/libraries/categoryClass.php");
			$cat = new JEventsCategory($db);
			$cat->bind(array("title"=>JText::_( 'DEFAULT' ), "published"=>1, "color"=>"#CCCCFF", "access"=>1));
			$cat->store();
			$catid=$cat->id;
		}
		
		// Add one native calendar by default if none exist already
		$sql = "SELECT ics_id from #__jevents_icsfile WHERE icaltype=2";
		$db->setQuery($sql);
		$ics = $db->loadResult();

		if (!$ics || is_null($ics) || $ics == 0)
		{
			$sql = "INSERT INTO #__jevents_icsfile (label,filename,	icaltype,state,	access,	catid, isdefault) VALUES ('Default','Initial ICS File',2,1,1,$catid,1)";
			$db->setQuery($sql);
			$db->execute();
			echo $db->getErrorMsg();
		}
		
		if (false && file_exists(JEV_ADMINPATH."install.php")){
			include_once(JEV_ADMINPATH."install.php");
			$installer = new com_jeventsInstallerScript();
			$installer->update(false);
		}
		
		// are config values setup correctyl
		$params = JComponentHelper::getParams(JEV_COM_COMPONENT);
		$jevadmin = $params->get("jevadmin", -1);
		if ($jevadmin == -1)
		{
			$this->setRedirect(JRoute::_("index.php?option=" . JEV_COM_COMPONENT . "&task=params.edit", false), JText::_('PLEASE_CHECK_CONFIGURATION_AND_SAVE'));
			$this->redirect();
		}

		// Make sure jevlayout is copied and up to date
		if ($params->get("installlayouts", 0))
		{

			// RSH Fix to allow the installation to work with J!1.6 11/19/10 - Adapater is now a subclass of JAdapterInstance!
			$jevlayout_file = 'jevlayout.php';

			jimport('joomla.filesystem.file');
			if (!JFile::exists(JPATH_SITE . "/libraries/joomla/installer/adapters/jevlayout.php") ||
					md5_file(JEV_ADMINLIBS . $jevlayout_file) != md5_file(JPATH_SITE . "/libraries/joomla/installer/adapters/jevlayout.php"))
			{
				JFile::copy(JEV_ADMINLIBS . $jevlayout_file, JPATH_SITE . "/libraries/joomla/installer/adapters/jevlayout.php");
			}
		}

		$this->mergeMenus();
				
		// get the view
		$this->view = $this->getView("cpanel", "html");
		$sql = 'SHOW TABLES LIKE "' . $db->getPrefix() . 'events"';
		$db->setQuery($sql);
		$tables = $db->loadObjectList();
		if (count($tables) > 0)
		{
			$this->view->assign('migrated', 1);
		}
		else
		{
			$this->view->assign('migrated', 0);
		}
			$this->checkCategoryAssets();
		

		// get all the raw native calendars
		$this->dataModel = new JEventsDataModel("JEventsAdminDBModel");
		$nativeCals = $this->dataModel->queryModel->getNativeIcalendars();
		if (is_null($nativeCals) || count($nativeCals) == 0)
		{
			JError::raiseWarning("100", JText::_('CALENDARS_NOT_SETUP_PROPERLY'));
		}

		/*
		 * We disable this check as in Joomla 3.4 they changed the way packages names are stored in DB and it's no longer necessary.
		 if (JEVHelper::isAdminUser())
		{
			$this->checkLanguagePackages();
		}*/

		// Check for orphan events and correct this
		$this->fixOrphanEvents();

		// Set the layout
		$this->view->setLayout('cpanel');
		$this->view->assign('title', JText::_('CONTROL_PANEL'));

		$this->view->display();

	}
	
	function support()
	{
		//Get the view
		$this->view = $this->getView("cpanel", "html");
		
		// Set the layout
		$this->view->setLayout('support');
		$this->view->assign('title', JText::_('CONTROL_PANEL'));

		$this->view->display();
	}

	function fixExceptions()
	{

		$db = JFactory::getDbo();
		$db->setQuery("SELECT * FROM #__jevents_exception where exception_type=1 AND (oldstartrepeat='0000-00-00 00:00:00' OR  oldstartrepeat is null) ORDER BY eventid ASC, startrepeat asc");
		//$db->setQuery("SELECT * FROM #__jevents_exception where exception_type=1 ORDER BY eventid ASC, startrepeat asc");
		$rows = $db->loadObjectList("rp_id");
		echo $db->getErrorMsg();

		$eventexceptions = array();
		foreach ($rows as $row)
		{
			if (!array_key_exists($row->eventid, $eventexceptions))
			{
				$eventexceptions[$row->eventid] = array();
			}
			$eventexceptions[$row->eventid][$row->rp_id] = $row;
		}

		$this->dataModel = new JEventsDataModel("JEventsAdminDBModel");

		foreach ($eventexceptions as $eventid => $exceptions)
		{

			//echo "<hr/>processing event $eventid<br/>";
			$db->setQuery("SELECT * FROM #__jevents_exception where exception_type=0 and eventid=$eventid ORDER BY eventid ASC, startrepeat asc");
			$deletedexceptions = $db->loadObjectList("rp_id");

			$vevent = $this->dataModel->queryModel->getVEventById($eventid);
			// skip any orphans
			if (!$vevent)
			{
				// double check it doesn't exist then remove it
				$db->setQuery("SELECT ev.* FROM #__jevents_vevent as ev WHERE ev.ev_id = '$eventid'");
				$row = $db->loadObject();

				continue;
			}
			$event = new jIcalEventDB($vevent);
			if (!$event)
			{
				// we have a problem
				continue;
			}

			$array = get_object_vars($vevent);
			foreach ($array as $k => $v)
			{
				$array[strtoupper($k)] = $v;
			}
			$icalevent = iCalEvent::iCalEventFromDB($array);

			// fix the rrule data
			$icalevent->rrule->eventid = $eventid;
			if ($icalevent->rrule->until == 0)
				$icalevent->rrule->until = "";

			ob_start();
			$generatedrepetitions = $icalevent->getRepetitions(true);
			ob_get_clean();

			// Now put in the pseudo repeat ids
			$icalevent = $this->dataModel->queryModel->getEventById($eventid, 1, 'icaldb');
			$firstrepeat = $icalevent->getOriginalFirstRepeat();
			for ($r = 0; $r < count($generatedrepetitions); $r++)
			{
				$generatedrepetitions[$r]->pseudo_rp_id = $firstrepeat->rp_id() + $r;
			}

			// get the current repeats (will not include deleted ones)
			$db->setQuery("Select rpt.* from #__jevents_repetition as rpt where rpt.eventid = $eventid order by rpt.rp_id asc");
			$currentreprows = $db->loadObjectList("rp_id");
			$rpids = array_merge(array_keys($currentreprows), array_keys($deletedexceptions));
			sort($rpids);

			$currentrepetitions = array();
			$rindex = 0;
			foreach ($rpids as $rid)
			{
				if (!array_key_exists($rid, $currentreprows))
				{
					$rindex+=1;
					continue;
				}
				else
					$currentrepetitions[$rindex] = $currentreprows[$rid];
				$rindex+=1;
			}

			if (count($currentrepetitions) > 0)
			{
				if (count($generatedrepetitions) > 0)
				{

					// The repetitions should be in the same sequence
					$countcurrent = count($currentrepetitions);
					$countgenerated = count($generatedrepetitions);
					foreach ($currentrepetitions as $c => $current)
					{
						foreach ($generatedrepetitions as $g => $generated)
						{
							if ($current->startrepeat == $generated->startrepeat)
							{
								// now set the oldstartrepeat field if this is an exception
								//echo "matched $current->startrepeat rpid=" . $current->rp_id . " pseudo rp_id= " . $generated->pseudo_rp_id . "<br/>";
								if (array_key_exists($current->rp_id, $exceptions))
								{
									$db->setQuery("Update #__jevents_exception set oldstartrepeat=" . $db->Quote($current->startrepeat) . " WHERE rp_id=" . $current->rp_id);
									$db->execute();
									unset($eventexceptions[$eventid][$current->rp_id]);
									unset($exceptions[$current->rp_id]);
								}
								unset($currentrepetitions[$c]);
								unset($generatedrepetitions[$g]);
							}
						}
					}

					// We have now dealt with the exceptions with matching dates (the easy ones!)
					// we have no more exceptions to look through so continue
					if (count($generatedrepetitions) == 0)
						continue;

					// This won't deal with scenario where a repeat has been moved and then deleted!
					if (count($deletedexceptions) > 0)
					{
						foreach ($deletedexceptions as $delrpid => $delex)
						{
							foreach ($generatedrepetitions as $g => $generated)
							{
								if ($generated->startrepeat == $delex->startrepeat)
								{
									unset($generatedrepetitions[$g]);
									unset($deletedexceptions[$delrpid]);
								}
							}
						}
					}

					// now match them by pseudo rp_id
					if (count($currentrepetitions) > 0)
					{
						//echo "Still more to process<br/>";
						foreach ($currentrepetitions as $c => $current)
						{
							foreach ($generatedrepetitions as $g => $generated)
							{
								if ($current->rp_id == $generated->pseudo_rp_id)
								{
									//echo "matched $current->startrepeat rpid=" . $current->rp_id . " pseudo rp_id= " . $generated->pseudo_rp_id . "<br/>";
									if (array_key_exists($current->rp_id, $exceptions))
									{
										$db->setQuery("Update #__jevents_exception set oldstartrepeat=" . $db->Quote($current->startrepeat) . " WHERE rp_id=" . $current->rp_id);
										$db->execute();
										unset($eventexceptions[$eventid][$current->rp_id]);
										unset($exceptions[$current->rp_id]);
									}
									unset($currentrepetitions[$c]);
									unset($generatedrepetitions[$g]);
								}
							}
						}
					}

					if (count($deletedexceptions) == 0 && count($generatedrepetitions) == count($currentrepetitions))
					{
						$countcurrent = count($currentrepetitions);
						$gplus = 0;
						foreach ($currentrepetitions as $c => $current)
						{
							if (!array_key_exists($c, $generatedrepetitions))
							{
								$x = 1;
							}
							if (array_key_exists($current->rp_id, $exceptions))
							{
								$generated = $generatedrepetitions[$c];
								$db->setQuery("Update #__jevents_exception set oldstartrepeat=" . $db->Quote($generated->startrepeat) . " WHERE rp_id=" . $current->rp_id);
								$db->execute();
								unset($eventexceptions[$eventid][$current->rp_id]);
								unset($exceptions[$current->rp_id]);
							}
							unset($currentrepetitions[$c]);
							unset($generatedrepetitions[$c]);
						}
					}

					foreach ($exceptions as $rpid => $exception)
					{
						$matched = false;
						foreach ($generatedrepetitions as $generatedrepetition)
						{
							if ($generatedrepetition->startrepeat == $exception->startrepeat)
							{
								
							}
						}
					}

					foreach ($currentrepetitions as $rep)
					{

						if (array_key_exists($rep->rp_id, $exceptions))
						{

							$db->setQuery("Update #__jevents_exception set oldstartrepeat=" . $db->Quote($rep->startrepeat) . " WHERE rp_id=" . $rep->rp_id);
							$db->execute();
							//echo $rep->startrepeat . " " . $rep->rp_id . "<Br/>";
						}
					}
				}
				else
				{
					echo "no repeats?<br/>";
				}
			}
		}
		echo "all done";
		return;

	}

	public function checkCategoryAssets()
	{
		$db = JFactory::getDbo();
		$db->setQuery("SELECT * FROM #__categories WHERE asset_id=0 and extension='com_jevents' order by level , id");
		$missingassets = $db->loadObjectList();
		if (count($missingassets) > 0)
		{
			foreach ($missingassets as $missingasset)
			{
				$this->insertAsset($missingasset);
			}
		}

		// Fix assets with no permissions set!
		$db->setQuery("SELECT * FROM #__assets WHERE name like 'com_jevents.category.%' AND rules=''");
		$blankruleassets = $db->loadObjectList('id');
		if ($blankruleassets && count ($blankruleassets)>0){
			$db->setQuery("UPDATE #__assets SET rules='".'{"core.create":[],"core.delete":[],"core.edit":[],"core.edit.state":[],"core.edit.own":[]}'."' WHERE name like 'com_jevents.category.%' AND rules=''");
			$db->execute();
		}

		// Fix assets with no parents set!
		$db->setQuery("SELECT * FROM #__assets WHERE name like 'com_jevents.category.%' AND parent_id=0");
		$blankparentassets = $db->loadObjectList('id');
		foreach ($blankparentassets as $blankparentasset){
			$catid = str_replace('com_jevents.category.', "", $blankparentasset->name);
			$cat = JTable::getInstance("category");
			$cat->load($catid);
			$cat->store();
		}

		// Fix assets with no parents set!
		$db->setQuery("SELECT * FROM #__assets WHERE name like 'com_jevpeople.category.%' AND parent_id=0");
		$blankparentassets = $db->loadObjectList('id');
		foreach ($blankparentassets as $blankparentasset){
			$catid = str_replace('com_jevpeople.category.', "", $blankparentasset->name);
			$cat = JTable::getInstance("category");
			$cat->load($catid);
			$cat->store();
		}

	}

	private function checkLanguagePackages()
	{
		$languages = JLanguage::getKnownLanguages();

		foreach($languages as $language)
		{
			$oldPackage = false;
			if(!in_array($language['tag'], array("en-GB")))
			{
				if(is_file(JPATH_SITE . "/language/".$language['tag']."/".$language['tag'].".com_jevents.ini") || is_file(JPATH_ADMINISTRATOR. "/language/".$language['tag']."/".$language['tag'].".com_jevents.ini"))
				{
					$oldPackage = true;

					$db = JFactory::getDbo();
					// Add one category by default if none exist already
					$sql = "SELECT element from #__extensions WHERE type = 'file'";
					$db->setQuery($sql);
					$elements = $db->loadObjectList();
					foreach($elements as $element)
					{
						if($element->element === $language['tag']."_JEvents")
						{
							$oldPackage = false;
						}
					}
				}
				
				if($oldPackage)
				{
					if (JText::_("JEV_UPDATE_LANGUAGE_PACKAGE")=="JEV_UPDATE_LANGUAGE_PACKAGE")
					{
						$updateLanguagePackMessage = JText::sprintf('Your JEvents language package for %s is not the latest official release from JEvents. Please go to <a href="http://www.jevents.net/translations">JEvents site</a> and get the latest version to enable live update system for JEvents languages.',$language['name']);
					}
					else
					{
						$updateLanguagePackMessage = JText::sprintf('JEV_UPDATE_LANGUAGE_PACKAGE',$language['name']);
					}
					JError::raiseNotice("100", $updateLanguagePackMessage);
				}
			}			
		}
	}

	private function insertAsset($object)
	{
		$db = JFactory::getDbo();
		// Getting the asset table
		$table = JTable::getInstance('Asset', 'JTable', array('dbo' => $db));

		// Getting the categories id's
		$db->setQuery("SELECT * FROM #__categories WHERE extension='com_jevents'");
		$categories = $db->loadObjectList('id');

		$db->setQuery("SELECT * FROM #__assets WHERE name like 'com_jevents.category.%'");
		$assets = $db->loadObjectList('id');

		$db->setQuery("SELECT * FROM #__assets WHERE name = 'com_jevents' and parent_id=1");
		$rootasset = $db->loadObject();

		$assets[$rootasset->id] = $rootasset;

		//
		// Correct extension
		//
		$id = $object->id;
		$table->name = "com_jevents.category.{$id}";

		// Setting rules values
		$table->rules = '{"core.create":[],"core.delete":[],"core.edit":[],"core.edit.state":[],"core.edit.own":[]}';
		$table->title = $db->escape($object->title);

		if ($object->parent_id==1)
		{
			$table->parent_id = $rootasset->id;
			// Check for logic 
			/*
			$db->setQuery("SELECT * FROM #__assets WHERE name = 'com_jevents.category." . $object->id . "'");
			$asset = $db->loadObject();
			echo $asset->name." ".$asset->parent_id . " vs ".$table->name . " ".$table->parent_id . "<br/>";
			 * 
			 */	 
		}
		else if (array_key_exists($object->parent_id, $categories) && $categories[$object->parent_id]->asset_id > 0)
		{
			$table->parent_id = $categories[$object->parent_id]->asset_id;
			// Check for logic 
			/*
			$db->setQuery("SELECT * FROM #__assets WHERE name = 'com_jevents.category." . $object->id . "'");
			$asset = $db->loadObject();
			echo $asset->name." ".$asset->parent_id . " vs ".$table->name . " ".$table->parent_id . "<br/>";
			 * 
			 */
		}
		
		// Make sure this asset doesn't exist already
		$db->setQuery("SELECT * FROM #__assets WHERE name = ".$db->quote($table->name));		
		$asset = $db->loadObject();
		if (!$asset){
			// Insert the asset
			$table->store();
		}
		else {
			$table = $asset;
		}

		// updating the category asset_id;
		$updatetable = '#__categories';
		$query = "UPDATE {$updatetable} SET asset_id = {$table->id}"
				. " WHERE id = {$id}";
		$db->setQuery($query);
		$db->execute();

		// Check for query error.
		$error = $db->getErrorMsg();

		if ($error)
		{
			throw new Exception($error);
			return false;
		}

		return true;

	}

	private function mergeMenus(){
		$params = JComponentHelper::getParams(JEV_COM_COMPONENT);
		$db = JFactory::getDbo();
		// merge/unmerge menu items?
		// Joomla 2.5 version
		$sql = 'select id from #__menu where client_id=1 and parent_id=1 and (title="com_jevents" OR title="COM_JEVENTS_MENU")';
		$db->setQuery($sql);			
		$parent = $db->loadResult();

		$tochange = 'LOWER(title)="com_jevlocations"  OR LOWER(title)="com_jeventstags"  OR LOWER(title)="com_jevpeople"  OR LOWER(title)="com_rsvppro" OR LOWER(title)="com_jevlocations_menu"  OR LOWER(title)="com_jeventstags_menu"  OR LOWER(title)="com_jevpeople_menu"  OR LOWER(title)="com_rsvppro_menu" OR LOWER(alias)="jevents-tags"  ';
		$toexist = ' link="index.php?option=com_jevlocations"  OR link="index.php?option=com_jeventstags"  OR link="index.php?option=com_jevpeople"  OR link="index.php?option=com_rsvppro" ';
			
		// is this an upgrade of JEvents in which case we may have lost the submenu items and may need to recreate them
		$sql = 'SELECT id, title, alias, link FROM #__menu where client_id=1 AND (
		'.$toexist.'
		)';
		// order by parent id to remove the appropriate duplicate - list the ones we want to keep first
		$sql .= ' ORDER BY parent_id '.($params->get("mergemenus", 1) ? 'desc':'asc');
		$db->setQuery($sql);			
		$existingmenus =  $db->loadObjectList();

		if (!$existingmenus) {
			$existingmenus = array();
		}

		// are there any duplicates
		$links = array();
		$updatemenus = false;			
		foreach ($existingmenus as $em){
			if (array_key_exists($em->link, $links)){
				$sql = "DELETE FROM #__menu where client_id and id=$em->id OR parent_id=$em->id";
				$db->setQuery($sql);			
				$db->execute();
				$updatemenus = true;
			}
			else {
				$links[$em->link]=$em;
			}
		}
		if ($updatemenus) {
			JLoader::register('JTableMenu', JPATH_PLATFORM . '/joomla/database/table/menu.php');
			// rebuild the menus
			$menu = JTable::getInstance('Menu');
			$menu->rebuild();
		}
			
		// find list of installed addons
		$installed = 'element="com_jevlocations"  OR element="com_jeventstags"  OR element="com_jevpeople"  OR element="com_rsvppro" ';
		$sql = 'SELECT element,extension_id FROM #__extensions  where type="component" AND (
		'.$installed.'
		)';
		$db->setQuery($sql);			
		$installed  =  $db->loadObjectList();

		foreach ($installed as $missingmenu){
			if (array_key_exists("index.php?option=".$missingmenu->element, $links)){
				continue;
			}
			JLoader::register('JTableMenu', JPATH_PLATFORM . '/joomla/database/table/menu.php');
			$table = JTable::getInstance('Menu', 'JTable');
			$table->id = 0;
			$table->title = $missingmenu->element;
			$table->alias = str_replace("_", "-", $missingmenu->element);
			$table->path = $table->alias;
			$table->link = "index.php?option=".$missingmenu->element;
			$table->type = "component" ;
			$table->img = "class:component";
			$table->parent_id = 1;
			$table->client_id = 1;
			$table->component_id = $missingmenu->extension_id;
			$table->level = 1;
			$table->home = 0;
			$table->checked_out = 0;
			$table->checked_out_time = $db->getNullDate();
			$table->setLocation(1, "last-child");
			$table->store();
			}					

		// Fix Tags menu item title if needed
		$sql = 'UPDATE  #__menu
		set title = "COM_JEVENTSTAGS"
		where client_id=1 AND alias="jevents-tags"';

		$db->setQuery($sql);
		$db->execute();
		echo $db->getErrorMsg();

		// Fix Managed People menu item if needed
		$sql = 'UPDATE  #__menu
		set menutype = "main" where client_id=1 AND menutype="" AND alias="com-jevpeople"';

		$db->setQuery($sql);
		$db->execute();
		echo $db->getErrorMsg();

		// Is the JEvents menu item completely missing or corrupted - if so then skip the rest
		if (!$parent) {
			return;
		}

		$updatemenus = false;			
		if ($params->get("mergemenus", 1)){
											
			$sql = 'SELECT count(id) FROM #__menu 
			where client_id=1 AND parent_id=1 AND (
				'.$tochange.'
			)';
			$db->setQuery($sql);			
			$mus = $db->loadResult();
			if ($mus){
				// check to see if we are creating a duplicate from an upgrade of an addon!
				$sql = 'SELECT * FROM #__menu 
				where client_id=1 AND parent_id=1 AND (
					'.$tochange.'
				)';
				$db->setQuery($sql);			
				$tomerge = $db->loadObjectList();

	                           $sql = 'SELECT * FROM #__menu
				where client_id=1 AND parent_id='.$parent.'  AND (
					'.$tochange.'
				)';
				$db->setQuery($sql);			
				$alreadymerged = $db->loadObjectList();

				if ($alreadymerged){
					foreach ($tomerge as $checkitem){
						foreach ($alreadymerged as $merged){
							if ($merged->alias == $checkitem->alias && $merged->link == $checkitem->link){
								// remove duplicates
								$sql = "DELETE FROM #__menu  where id=$checkitem->id";
								$db->setQuery($sql);			
								$db->execute();
							}
						}
					}
				}
				$updatemenus = true;
				
				$sql = 'UPDATE  #__menu 
				set parent_id = '.$parent.'
				where client_id=1 AND parent_id=1 AND (
				'.$tochange.'
				)';
				$db->setQuery($sql);			
				$db->execute();
				echo $db->getErrorMsg();
			}
		}
		else {
			$sql = 'SELECT count(id) FROM #__menu 
			where client_id=1 AND parent_id='.$parent.' AND (
			'.$tochange.'
			)';
			$db->setQuery($sql);			
			$mus = $db->loadResult();
			if ($mus){
        			$updatemenus = true;
				// Joomla 2.5 version
					$sql = 'UPDATE  #__menu 
					set parent_id = 1
					where client_id=1 AND parent_id='.$parent.' AND (
					'.$tochange.'
					)';
					$db->setQuery($sql);			
					$db->execute();
					echo $db->getErrorMsg();				
				}
			}
			
			if ($updatemenus) {
				JLoader::register('JTableMenu', JPATH_PLATFORM . '/joomla/database/table/menu.php');
				// rebuild the menus
				$menu = JTable::getInstance('Menu');
				$menu->rebuild();
			}		
	}

	public function fixcollations(){

		if (!JEVHelper::isAdminUser())
		{
			JFactory::getApplication()->redirect("index.php?option=" . JEV_COM_COMPONENT . "&task=cpanel.cpanel", "Not Authorised - must be admin");
			return;
		}

		$db = JFactory::getDbo();
		$db->setQuery("SHOW TABLES LIKE '" . $db->getPrefix() . "jev_%'");
		$alltables = $db->loadResultArray();

		// find collation for com_content
		$db->setQuery("SHOW FULL COLUMNS FROM #__content");
		$contentdata = $db->loadObjectList('Field');
		$collation = $contentdata['title']->Collation;

		$db->setQuery("SHOW TABLE STATUS LIKE '" . $db->getPrefix() . "jev_%'");
		$tables = $db->loadObjectList('Name');

		if (JRequest::getInt("ft",0)){
			foreach ($tables as $tablename=>$table){
				if ($table->Collation != $collation){
					$db->setQuery("ALTER TABLE $tablename convert to character set utf8 collate $collation");
					$db->execute();
				}
			}
		}

		$db->setQuery("SHOW TABLE STATUS LIKE '" . $db->getPrefix() . "jev_%'");
		$tables = $db->loadObjectList('Name');

		$fixtables = false;
		foreach ($tables as $tablename=>$table){
			if ($table->Collation != $collation){
				echo "Table $tablename has collation ".$table->Collation." it should probably be ".$collation."<Br/>";
				$fixtables = true;
			}
			$db->setQuery("SHOW FULL COLUMNS FROM $tablename");
			$columndata = $db->loadObjectList('Field');
			foreach ($columndata  as $columnname => $columndata){
				if ($columndata->Collation && $columndata->Collation!=$collation){
					echo "Column $columnname in Table $tablename has collation ".$columndata->Collation." it should probably be ".$collation."<Br/>";
				}
			}
		}
		if ($fixtables){
			echo  "<hr/><br/><strong><a href='".JURI::root()."/administrator/index.php?option=com_jevents&task=cpanel.fixcollations&ft=1"."'>Click here to fix these tables</a></strong>
				<h2>MAKE SURE YOU DATABASE IS BACKED UP BEFORE YOU DO THIS</h2>";
		}
	}

	private function fixOrphanEvents() {
		$db = JFactory::getDbo();
		$hasOrphans = false;

		$sql = "SELECT ev.ev_id from #__jevents_vevent as ev
LEFT JOIN #__categories as cat on cat.id=ev.catid AND extension='com_jevents'
WHERE cat.id is null
";
		$db->setQuery($sql);
		$orphans =$db->loadColumn();

		if ($orphans && count($orphans)>0){
			$catid=$this->createOrphanCategory();
			if ($catid){
				$sql = "UPDATE #__jevents_vevent SET catid=$catid where ev_id IN (".implode(",", $orphans).")";
				$db->setQuery($sql);
				$db->execute();
				$hasOrphans  = true;
			}
		}

		$params = JComponentHelper::getParams(JEV_COM_COMPONENT);
		$multicategory = $params->get("multicategory",0);
		if ($multicategory) {

			// Start by removing orphans from the category mapping table itself
			$sql = "DELETE FROM #__jevents_catmap 
			WHERE evid NOT IN (SELECT ev_id FROM #__jevents_vevent)";
			$db->setQuery($sql);
			$db->execute();

			// Do the bad category Ids first
			$sql = "SELECT catmap.* FROM #__jevents_catmap as catmap 
	LEFT JOIN #__categories as cat on cat.id=catmap.catid AND extension='com_jevents'
	WHERE cat.id is null	";
			$db->setQuery($sql);
			$orphans =$db->loadObjectList("evid");

			if ($orphans && count($orphans)>0){
				$catid=$this->createOrphanCategory();
				if ($catid){
					foreach ($orphans as $orphan){
						// should not set multiple copies of this
						$sql = "SELECT catmap.* FROM #__jevents_catmap as catmap  where evid=".$orphan->evid." AND catid=".$catid;
						$db->setQuery($sql);
						if ($db->loadObject()){
							$sql = "DELETE FROM #__jevents_catmap where evid=".$orphan->evid." AND catid=".$orphan->catid;
							$db->setQuery($sql);
							$db->execute();
						}
						else {
							$sql = "UPDATE #__jevents_catmap SET catid=$catid where evid=".$orphan->evid." AND catid=".$orphan->catid;
							$db->setQuery($sql);
							$db->execute();
						}
						$hasOrphans  = true;
					}
				}
			}
			// Now do the missing category mappings!
			$sql = "SELECT ev.ev_id from #__jevents_vevent as ev
	LEFT JOIN  #__jevents_catmap as catmap on ev.ev_id=catmap.evid
	LEFT JOIN #__categories as cat on cat.id=catmap.catid AND extension='com_jevents'
	WHERE cat.id is null
	";
			$db->setQuery($sql);
			$orphans =$db->loadColumn();

			if ($orphans && count($orphans)>0){
				$catid=$this->createOrphanCategory();
				if ($catid){
					foreach ($orphans as $orphan){
						$sql = "REPLACE INTO #__jevents_catmap (evid, catid) VALUES($orphan, $catid)";
						$db->setQuery($sql);
						$db->execute();
						$hasOrphans  = true;
					}
				}
			}
		}

		$sql = "SELECT ev.ev_id from #__jevents_vevent as ev
LEFT JOIN #__jevents_icsfile as ics on ics.ics_id=ev.icsid
WHERE ics.ics_id is null
";
		$db->setQuery($sql);
		$orphans =$db->loadColumn();

		if ($orphans && count($orphans)>0){
			$icsid=$this->createOrphanCalendar();
			if ($icsid){
				$sql = "UPDATE #__jevents_vevent SET icsid=$icsid where ev_id IN (".implode(",", $orphans).")";
				$db->setQuery($sql);
				$db->execute();
				$hasOrphans  = true;
			}
		}


		if ($hasOrphans){
			JFactory::getApplication()->enqueueMessage(JText::_("JEV_ORPHAN_EVENTS_DETECTED_AND_PLACED_IN_SPECIAL_ORPHAN_EVENT_CATEGORY_OR_CALENDAR"));
		}


	}

	private function createOrphanCalendar() {
		$catid=$this->createOrphanCategory();
		$db = JFactory::getDbo();
		// Add orphan native calendar by default if none exist already
		$sql = "SELECT ics_id from #__jevents_icsfile WHERE icaltype=2 and label='Orphans'";
		$db->setQuery($sql);
		$ics = $db->loadResult();

		if (!$ics || is_null($ics) || $ics == 0)
		{
			$sql = "INSERT INTO #__jevents_icsfile (label,filename,	icaltype,state,	access,	catid, isdefault) VALUES ('Orphans','Orphan ICS File',2,0,1,$catid,0)";
			$db->setQuery($sql);
			$db->execute();

			$sql = "SELECT ics_id from #__jevents_icsfile WHERE icaltype=2 and label='Orphans'";
			$db->setQuery($sql);
			$ics = $db->loadResult();
		}
		return $ics;
	}


	private function createOrphanCategory() {
		$db = JFactory::getDbo();

		$sql = "SELECT id from #__categories where extension='com_jevents' AND title='Orphans'";
		$db->setQuery($sql);
		$catid = $db->loadResult();

		// Add orphan category if none exist already
		if (!$catid) {
			JLoader::register('JEventsCategory',JEV_ADMINPATH."/libraries/categoryClass.php");
			$cat = new JEventsCategory($db);
			$cat->bind(array("title"=>"Orphans", "published"=>0, "color"=>"#CCCCFF", "access"=>1));
			$cat->store();
			$catid=$cat->id;
		}

		return $catid;

	}
}