<?php
/**
 * VirtueMart script file
 *
 * This file is executed during install/upgrade and uninstall
 *
 * @author Max Milbers, RickG, impleri
 * @package VirtueMart
 */
defined('_JEXEC') or die('Restricted access');

//Maybe it is possible to set this within the xml file note by Max Milbers
$memory_limit = (int) substr(ini_get('memory_limit'),0,-1);
if(!empty($memory_limit) and $memory_limit<128)  @ini_set( 'memory_limit', '128M' );

$maxtime = (int) ini_get('max_execution_time');
if($maxtime < 140){
	@ini_set( 'max_execution_time', '140' );
}

defined('DS') or define('DS', DIRECTORY_SEPARATOR);
defined('VMPATH_ROOT') or define('VMPATH_ROOT', JPATH_ROOT);
defined('VMPATH_ADMIN') or define('VMPATH_ADMIN', VMPATH_ROOT.DS.'administrator'.DS.'components'.DS.'com_virtuemart');


// hack to prevent defining these twice in 1.6 installation
if (!defined('_VM_SCRIPT_INCLUDED')) {
	define('_VM_SCRIPT_INCLUDED', true);


	/**
	 * VirtueMart custom installer class
	 */
	class com_virtuemartInstallerScript {


		/**
		 * method must be called after preflight
		 * Sets the paths and loads VMFramework config
		 */
		public function loadVm() {
// 			$this->path = JInstaller::getInstance()->getPath('extension_administrator');

			if(empty($this->path)){
				$this->path = VMPATH_ADMIN;
			}
			if(!class_exists('VmConfig')) require_once($this->path .'/helpers/config.php');
			VmConfig::loadConfig(false,true);
			if(!class_exists('VmTable')) require_once($this->path .'/helpers/vmtable.php');
			if(!class_exists('VmModel')) require_once($this->path .'/helpers/vmmodel.php');
			VmTable::addIncludePath($this->path.DS.'tables','Table');
			VmModel::addIncludePath($this->path.DS.'models','VirtueMartModel');

		}

		public function checkIfUpdate(){

			$update = false;
			$this->_db = vFactory::getDbo();
			$q = 'SHOW TABLES LIKE "'.$this->_db->getPrefix().'virtuemart_adminmenuentries"'; //=>jos_virtuemart_shipment_plg_weight_countries
			$this->_db->setQuery($q);
			if($this->_db->loadResult()){

				$q = "SELECT count(id) AS idCount FROM `#__virtuemart_adminmenuentries`";
				$this->_db->setQuery($q);
				$result = $this->_db->loadResult();

				if (empty($result)) {
					$update = false;
				} else {
					$update = true;
				}
			} else {
				$update = false;
			}

			$this->update = $update;
			return $update;
		}


		/**
		 * Pre-process method (e.g. install/upgrade) and any header HTML
		 *
		 * @param string Process type (i.e. install, uninstall, update)
		 * @param object JInstallerComponent parent
		 * @return boolean True if VM exists, null otherwise
		 */
		public function preflight ($type, $parent=null) {

			//We want disable the redirect in the installation process
			if(version_compare(JVERSION,'1.6.0','ge') and version_compare(JVERSION,'3.0.0','le')) {

				$this->_db = JFactory::getDbo();
				$q = 'SELECT extension_id FROM #__extensions WHERE `type` = "component" AND `element` = "com_virtuemart" ';
				$this->_db ->setQuery($q);
				$extensionId = $this->_db->loadResult();
				if($extensionId){
					$q = 'DELETE FROM `#__menu` WHERE `component_id` = "'.$extensionId.'" AND `client_id`="1" ';
					$this->_db -> setQuery($q);
					$this->_db -> execute();
				}
				/*else {
					$q = 'DELETE FROM `#__menu` WHERE `menutype` = "main" AND `type` = "component" AND `client_id`="1"
						AND `link`="%option=com_virtuemart%" )';
				}*/

			}

		}


		/**
		 * Install script
		 * Triggers after database processing
		 *
		 * @param object JInstallerComponent parent
		 * @return boolean True on success
		 */
		public function install ($loadVm = true) {

			if($loadVm) $this->loadVm();

			if($this->checkIfUpdate()){
				return $this->update($loadVm);
			}
			$_REQUEST['install'] = 1;
			if(!class_exists('vFolder')) require($this->path .DS. 'vmf' .DS. 'filesystem' .DS. 'vfolder.php');
			if(!class_exists('vFile')) require($this->path .DS. 'vmf' .DS. 'filesystem' .DS. 'vfile.php');

			$this -> joomlaSessionDBToMediumText();

			// install essential and required data
			// should this be covered in install.sql (or 1.6's JInstaller::parseSchemaUpdates)?
			//			if(!class_exists('VirtueMartModelUpdatesMigration')) require(VMPATH_ADMIN.DS.'models'.DS.'updatesMigration.php');
			$params = JComponentHelper::getParams('com_languages');
			$lang = $params->get('site', 'en-GB');//use default joomla
			$lang = strtolower(strtr($lang,'-','_'));

			if(!class_exists('VmModel')) require $this->path.DS.'helpers'.DS.'vmmodel.php';

			if(!class_exists('VirtueMartModelUpdatesMigration')) require($this->path . DS . 'models' . DS . 'updatesmigration.php');
			$model = VmModel::getModel('updatesmigration');
			$model->execSQLFile($this->path.DS.'install'.DS.'install.sql');
			$model->execSQLFile($this->path.DS.'install'.DS.'install_essential_data.sql');
			$model->execSQLFile($this->path.DS.'install'.DS.'install_required_data.sql');

			$model->setStoreOwner();

			//copy sampel media
			$src = $this->path .DS. 'assets' .DS. 'images' .DS. 'vmsampleimages';
			// 			if(version_compare(JVERSION,'1.6.0','ge')) {

			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'shipment');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'payment');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'category');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'category'.DS.'resized');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'manufacturer');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'manufacturer'.DS.'resized');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'product');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'product'.DS.'resized');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'forSale');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'forSale'.DS.'invoices');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'forSale'.DS.'resized');
			$this->createIndexFolder(VMPATH_ROOT .DS. 'images'.DS.'stories'.DS.'virtuemart'.DS.'typeless');


			$dst = VMPATH_ROOT .DS. 'images' .DS. 'stories' .DS. 'virtuemart';

			$this->recurse_copy($src,$dst);

			if(!class_exists('GenericTableUpdater')) require($this->path . DS . 'helpers' . DS . 'tableupdater.php');
			$updater = new GenericTableUpdater();
			$updater->createLanguageTables();

			$this->checkAddDefaultShoppergroups();

			$model->updateJoomlaUpdateServer('component','com_virtuemart',$this->path.DS.'virtuemart.xml');

			$this->deleteSwfUploader();

			$this->displayFinished(false);

			//include($this->path.DS.'install'.DS.'install.virtuemart.html.php');

			// perhaps a redirect to updatesMigration here rather than the html file?
			//			$parent->getParent()->setRedirectURL('index.php?option=com_virtuemart&view=updatesMigration');

			return true;
		}


		/**
		 * creates a folder with empty html file
		 *
		 * @author Max Milbers
		 *
		 */
		public function createIndexFolder($path){

			if(vFolder::create($path)) {
				return true;
			}
			return false;
		}

		/**
		 * Update script
		 * Triggers after database processing
		 *
		 * @param object JInstallerComponent parent
		 * @return boolean True on success
		 */
		public function update ($loadVm = true) {

			if($loadVm) $this->loadVm();

			if(!$this->checkIfUpdate()){
				return $this->install($loadVm);
			}

			if(!class_exists('vFolder')) require(VMPATH_ADMIN .DS. 'vmf' .DS. 'filesystem' .DS. 'vfolder.php');
			if(!class_exists('vFile')) require(VMPATH_ADMIN .DS. 'vmf' .DS. 'filesystem' .DS. 'vfile.php');

			//Delete Cache
			$cache = vFactory::getCache();
			$cache->clean();

			$this->_db = vFactory::getDbo();

			if(empty($this->path)) $this->path = VMPATH_ADMIN;

			$params = JComponentHelper::getParams('com_languages');
			$lang = $params->get('site', 'en-GB');//use default joomla
			$lang = strtolower(strtr($lang,'-','_'));

			if(!class_exists('VmModel')) require $this->path.DS.'helpers'.DS.'vmmodel.php';
			if(!class_exists('VirtueMartModelUpdatesMigration')) require($this->path . DS . 'models' . DS . 'updatesmigration.php');
			$model = VmModel::getModel('updatesmigration');
			//$model = new VirtueMartModelUpdatesMigration(); //JModel::getInstance('updatesmigration', 'VirtueMartModel');
			$model->execSQLFile($this->path.DS.'install'.DS.'install.sql');

			$this -> joomlaSessionDBToMediumText();

			$this->updateToVm3 = $this->isUpdateToVm3();


			$this->alterTable('#__virtuemart_product_prices',
				array(
				'product_price_vdate' => '`product_price_publish_up` DATETIME NULL DEFAULT NULL AFTER `product_currency`',
				'product_price_edate' => '`product_price_publish_down` DATETIME NULL DEFAULT NULL AFTER `product_price_publish_up`'
			));
			$this->alterTable('#__virtuemart_customs',array(
				'custom_field_desc' => '`custom_desc` char(255) COMMENT \'description or unit\'',
			));
			$this->alterTable('#__virtuemart_product_customfields',array(
				'custom_value' => ' `customfield_value` varchar(2500) COMMENT \'field value\'',
				'custom_price' => ' `customfield_price` DECIMAL(15,6) COMMENT \'price\'',
				'custom_param' => ' `customfield_params` varchar(17000) NULL DEFAULT NULL',
				'idx_custom_value' => ' INDEX `idx_published` (`published`)'
			));


			$this->alterTable('#__virtuemart_userfields',array(
				'params' => '`userfield_params` varchar(17500) NOT NULL DEFAULT "" COMMENT \'userfield params\'',
			));

			$this->alterTable('#__virtuemart_orders',array(
				'customer_note' => '`oc_note` varchar(20000) NOT NULL DEFAULT "" COMMENT \'old customer notes\'',
			));

			if(!class_exists('GenericTableUpdater')) require($this->path . DS . 'helpers' . DS . 'tableupdater.php');
			$updater = new GenericTableUpdater();

			$updater->updateMyVmTables();
			$result = $updater->createLanguageTables();

			$this->checkAddDefaultShoppergroups();

			//$this->adjustDefaultOrderStates();

			$this->fixOrdersVendorId();

			$this->updateAdminMenuEntries();

			if($this->updateToVm3){
				$this->migrateCustoms();
				$this->checkUserfields();
			}

			//copy sampel media
			$src = $this->path .DS. 'assets' .DS. 'images' .DS. 'vmsampleimages';
			if(vFolder::exists($src)){
				$dst = VMPATH_ROOT .DS. 'images' .DS. 'stories' .DS. 'virtuemart';
				$this->recurse_copy($src,$dst);
			}

			$model->updateJoomlaUpdateServer('component','com_virtuemart', $this->path.DS.'virtuemart.xml');
			//fix joomla BE menu
			$this->checkFixJoomlaBEMenuEntries();

			$this->deleteSwfUploader();
			if($loadVm) $this->displayFinished(true);

			return true;
		}

		private function deleteSwfUploader(){
			if(JVM_VERSION>0){
				if( vFolder::exists(VMPATH_ROOT. DS. 'media' .DS. 'system'. DS. 'swf')){
					vFolder::delete(VMPATH_ROOT. DS. 'media' .DS. 'system'. DS. 'swf');
				}
				if( vFile::exists(VMPATH_ROOT. DS. 'administrator' .DS. 'language' .DS. 'en-GB'. DS. 'en-GB.com_virtuemart.sys.ini')){
					vFile::delete(VMPATH_ROOT. DS. 'administrator' .DS. 'language' .DS. 'en-GB'. DS. 'en-GB.com_virtuemart.sys.ini');
				}

			}
		}

		private function isUpdateToVm3(){

			if(empty($this->_db)) {
				$this->_db = vFactory::getDbo();
			}

			$tablename = '#__virtuemart_product_customfields';
			$this->_db->setQuery('SHOW FULL COLUMNS  FROM `'.$tablename.'` ');
			//$fullColumns = $this->_db->loadObjectList();
			$columns = $this->_db->loadColumn(0);
			if(in_array('custom_value',$columns) or in_array('custom_price',$columns)){
				vmInfo('Upgrade of VM2 to VM3');
				return true;
			} else {
				vmdebug('Update of VM3');
				return false;
			}

		}

		private function fixOrdersVendorId(){

			$multix = Vmconfig::get('multix','none');

			if( $multix == 'none'){

				if(empty($this->_db)){
					$this->_db = vFactory::getDbo();
				}

				$q = 'SELECT `virtuemart_user_id` FROM #__virtuemart_orders WHERE virtuemart_vendor_id = "0" ';
				$this->_db->setQuery($q);
				$res = $this->_db->loadResult();

				if($res){
					//vmdebug('fixOrdersVendorId ',$res);
					$q = 'UPDATE #__virtuemart_orders SET `virtuemart_vendor_id`=1 WHERE virtuemart_vendor_id = "0" ';
					$this->_db->setQuery($q);
					$res = $this->_db->execute();
					$err = $this->_db->getErrorMsg();
					if(!empty($err)){
						vmError('fixOrdersVendorId update orders '.$err);
					}
					$q = 'UPDATE #__virtuemart_order_items SET `virtuemart_vendor_id`=1 WHERE virtuemart_vendor_id = "0" ';
					$this->_db->setQuery($q);
					$res = $this->_db->execute();
					$err = $this->_db->getErrorMsg();
					if(!empty($err)){
						vmError('fixOrdersVendorId update order_item '.$err);
					}
				}

			}

		}

		private function adjustDefaultOrderStates(){

			if(empty($this->_db)){
				$this->_db = vFactory::getDbo();
			}

			$order_stock_handles = array('P'=>'R', 'C'=>'R', 'X'=>'A', 'R'=>'A', 'S'=>'O');

			foreach($order_stock_handles as $k=>$v){

				$q = 'SELECT `order_stock_handle` FROM `#__virtuemart_orderstates`';
				$this->_db->setQuery($q);
				$res = $this->_db->execute();
				$err = $this->_db->getErrorMsg();
				if(empty($res) and empty($err) ){
					$q = 'UPDATE `#__virtuemart_orderstates` SET `order_stock_handle`="'.$v.'" WHERE  `order_status_code`="'.$k.'" ;';
					$this->_db->setQuery($q);

					if(!$this->_db->execute()){
						$app = vFactory::getApplication();
						$app->enqueueMessage('Error: Install alterTable '.$this->_db->getErrorMsg() );
						$ok = false;
					}
				}
			}

		}

		/**
		 *
		 */
		public function checkFixJoomlaBEMenuEntries(){

			$db = JFactory::getDbo();
			$db->setQuery('SELECT `extension_id` FROM `#__extensions` WHERE `type` = "component" AND `element`="com_virtuemart"');
			$jId = $db->loadResult();

			if($jId){
				$mId = false;
				$qME = 'SELECT * FROM `#__menu` WHERE `component_id` = "'.$jId.'" AND `type` = "component" AND `parent_id` = "1" AND `client_id` = "1" AND id > 1';
				//now lets check if there are menue entries
				$db->setQuery($qME);
				$mEntries = $db->loadAssocList();

				if(!$mEntries){
					$db->setQuery('SELECT `id` FROM `#__menu` WHERE `path`="com-virtuemart" AND `type` = "component" AND `parent_id` = "1" AND `client_id` = "1" AND id > 1');
					if($id = $db->loadResult()){
						$db->setQuery('UPDATE `#__menu` SET `component_id`="'.$jId.'", `language`="*" WHERE `id` = "'.$id.'" ');
						$db->execute();

						$db->setQuery($qME);
						$mEntries = $db->loadAssocList();

					} else {
						vmError('Could not find VirtueMart submenues, please install VirtueMart again');
					}
				}

				if($mEntries){
					if(is_array($mEntries)){
						if(count($mEntries)>1){
							vmError('Multiple menues found');
						} else if(isset($mEntries[0])) {
							$mId = $mEntries[0]['id'];
						}
					}
				} else {
					vmError('Could not find VirtueMart submenues, please install VirtueMart again');
				}

				if($mId){
					$db->setQuery('UPDATE `#__menu` SET `component_id`="'.$jId.'", `language`="*", `menutype`="vmadmin" WHERE `parent_id` = "'.$mId.'" ');
					$db->execute();
					$db->setQuery('UPDATE `#__menu` SET `language`="*", `menutype`="vmadmin" WHERE `id` = "'.$mId.'" ');
					$db->execute();
				}

			}
		}

		private function updateAdminMenuEntries(){

			$sqlfile = VMPATH_ADMIN .DS. 'install' .DS. 'install_essential_data.sql';
			$db = vFactory::getDbo();
			$queries = $db->splitSql(file_get_contents($sqlfile));

			if (count($queries) == 0) {
				vmError('SQL file has no queries!');
				return false;
			}
			$query = trim($queries[0]);

			$q = 'SELECT * FROM `#__virtuemart_adminmenuentries` ';
			$db->setQuery($q);
			$existing = $db->loadAssocList();

			if($existing){

				$queryLines = explode("\n",$query);
				$oldIds = array();
				foreach($queryLines as $n=>$line){
					if(empty($line)){
						unset($queryLines[$n]);
					} else {
						$line = trim($line);
						if(empty($line) or strpos($line, '--' )===0){
							unset($queryLines[$n]);
						}

						if(strpos($line, 'CREATE' )===0 or strpos( $line, 'INSERT')===0){
							$open = strpos($line,'(')+1;
							$close = strrpos($line,')') - $open;
							$keyLine = substr($line,$open,$close);
							//vmdebug('Update Admin menu entries define ',$length,$open,$close,$line,$keyLine);
							$keys = explode(',',$keyLine);

						} else if(strpos($line, '(' )===0){
							$open = strpos($line,'(')+1;
							$close = strrpos($line,')') - $open;
							$valueLine = substr($line,$open,$close);
							$values = explode(',',$valueLine);

							foreach($existing as $entry){
								$name = '\''.$entry['name'].'\'';
								if($name==trim($values[3])){
									//The entry exists, lets update it
									$oldIds[$entry['id']] = $values;
									unset($queryLines[$n]);
								}
							}
						}
					}
				}


				if(count($queryLines)>1){
					$query = trim(implode("\n",$queryLines));
					$query = substr($query,0,-1).';';
				} else {
					$query = false;
				}

				if(count($oldIds)>0){

					$updateBase = 'UPDATE `#__virtuemart_adminmenuentries` SET ';
					foreach($oldIds as $id=>$values){
						$updateQuery = '';
						foreach($keys as $index => $key){
							if($key=='`id`'){
								continue;
							}
							$value = trim($values[$index]);
							if(strpos($value,'\'')===0){
								$value = substr($value,1,-1);
							}
							$updateQuery .= $key . ' = "'.$value.'", ';
						}
						$updateQuery = substr($updateQuery,0,-2);
						$updateQuery .= ' WHERE `id` = '.$id.';';
						$db->setQuery($updateBase.$updateQuery);
						if (!$db->execute()) {
							vmWarn( 'JInstaller::install: '.$sqlfile.' '.vmText::_('COM_VIRTUEMART_SQL_ERROR')." ".$db->stderr(true));
							$ok = false;
						}
						//vmdebug('Update Admin menu entries value $updateQuery',$updateBase.$updateQuery);
					}
				}

			}

			if(!empty($query)){
				$db->setQuery($query);
				if (!$db->execute()) {
					vmWarn( 'JInstaller::install: '.$sqlfile.' '.vmText::_('COM_VIRTUEMART_SQL_ERROR')." ".$db->stderr(true));
				}
			}

		}

		private function checkUserfields(){

			$model = VmModel::getModel('userfields');
			$field = $model->getUserfield('customer_note','name');

			$data = array ('type' => 'textarea'
			, 'maxlength' => 2500
			, 'cols' => 60
			, 'rows' => 1
			, 'name' => 'customer_note'
			, 'title' => 'COM_VIRTUEMART_CNOTES_CART'
			, 'description' => ''
			, 'default' => ''
			, 'required' => 0
			, 'cart' => 1
			, 'account' => 0
			, 'shipment' => 0
			, 'readonly' => 0
			, 'published' => 1
			);

			if(!empty($field->virtuemart_userfield_id)) {
				if($field->published){
					$field->cart = 1;
					$id = $model->store((array)$field);
				}
			} else {
				$id = $model->store($data);
			}

			if($id)	vmInfo('Created shopperfield customer_note');


			$field = $model->getUserfield('tos','name');

			$data = array ('type' => 'custom'
			, 'name' => 'tos'
			, 'title' => 'COM_VIRTUEMART_STORE_FORM_TOS'
			, 'description' => ''
			, 'required' => 1
			, 'cart' => 1
			, 'account' => 0
			, 'shipment' => 0
			, 'readonly' => 0
			, 'published' => 1
			);

			if(!empty($field->virtuemart_userfield_id)) {
				if($field->published){
					$field->cart = 1;
					$field->required = 1;
					$id = $model->store((array)$field);
				}
			} else {
				$id = $model->store($data);
			}

			if($id)	vmInfo('Created shopperfield tos for cart and account');

			$field = $model->getUserfield('agreed','name');
			if($field){
				$field ->published = 0;
				$id = $model->store($field);
				if($id)	vmInfo('Disabled shopperfield agreed, replaced by tos');
			}

		}

		private function migrateCustoms(){

			$db = vFactory::getDbo();
			$q = 'UPDATE `#__virtuemart_product_customfields` SET `published`= "1"  WHERE `published`="0" ';
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished update published '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `field_type`='S',`is_cart_attribute`=1,`is_input`=1,`is_list`='0' WHERE `field_type`='V'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `is_input`=1 WHERE `field_type`='M' AND `is_cart_attribute`=1";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `field_type`='S' WHERE `field_type`='I'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `field_type`='S', `custom_value`='JYES;JNO',`is_list`='1' WHERE `field_type`='B'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `layout_pos`='addtocart' WHERE `is_input`='1'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `layout_pos`='ontop',`is_cart_attribute`=1 WHERE `field_type`='A'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `layout_pos`='related_products' WHERE `field_type`='R'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `layout_pos`='related_categories' WHERE `field_type`='Z'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}

			$q = "UPDATE `#__virtuemart_customs` SET `field_type`='G' WHERE `field_type`='P'";
			$db->setQuery($q);
			$db->execute();
			$err = $db->getErrorMsg();
			if(!empty($err)){
				vmError('updateCustomfieldsPublished migrateCustoms '.$err);
			}
		}

		/**
		 * @author Max Milbers
		 * @param unknown_type $tablename
		 * @param unknown_type $fields
		 * @param unknown_type $command
		 */
		private function alterTable($tablename,$fields,$command='CHANGE'){

			$ok = true;

			if(empty($this->_db)){
				$this->_db = vFactory::getDbo();
			}

			$query = 'SHOW COLUMNS FROM `'.$tablename.'` ';
			$this->_db->setQuery($query);
			$columns = $this->_db->loadColumn(0);

			foreach($fields as $fieldname => $alterCommand){
				if(in_array($fieldname,$columns)){
					$query = 'ALTER TABLE `'.$tablename.'` '.$command.' COLUMN `'.$fieldname.'` '.$alterCommand;

					$this->_db->setQuery($query);
					if(!$this->_db->execute()){
						$app = vFactory::getApplication();
						$app->enqueueMessage('Error: Install alterTable '.$this->_db->getErrorMsg() );
						$ok = false;
					}
				}
			}

			return $ok;
		}


		/**
		* Checks if both types of default shoppergroups are set
		* @author Max Milbers
		*/

		private function checkAddDefaultShoppergroups(){

			$q = 'SELECT `virtuemart_shoppergroup_id` FROM `#__virtuemart_shoppergroups` WHERE `default` = "1" ';

			$this->_db = vFactory::getDbo();
			$this->_db->setQuery($q);
			$res = $this->_db ->loadResult();

			if(empty($res)){
				$q = "INSERT INTO `#__virtuemart_shoppergroups` (`virtuemart_shoppergroup_id`, `virtuemart_vendor_id`, `shopper_group_name`, `shopper_group_desc`, `default`, `shared`) VALUES
								(NULL, 1, '-default-', 'This is the default shopper group.', 1, 1);";
				$this->_db->setQuery($q);
				$this->_db->execute();
			}

			$q = 'SELECT `virtuemart_shoppergroup_id` FROM `#__virtuemart_shoppergroups` WHERE `default` = "2" ';

			$this->_db->setQuery($q);
			$res = $this->_db ->loadResult();

			if(empty($res)){
				$q = "INSERT INTO `#__virtuemart_shoppergroups` (`virtuemart_shoppergroup_id`, `virtuemart_vendor_id`, `shopper_group_name`, `shopper_group_desc`, `default`, `shared`) VALUES
								(NULL, 1, '-anonymous-', 'Shopper group for anonymous shoppers', 2, 1);";
				$this->_db->setQuery($q);
				$this->_db->execute();
			}

		}


		private function joomlaSessionDBToMediumText(){

			if(version_compare(JVERSION,'1.6.0','ge')) {
				$fields = array('data'=>'`data` mediumtext NULL AFTER `time`');
				$this->alterTable('#__session',$fields);
			}
		}

		/**
		 * Uninstall script
		 * Triggers before database processing
		 *
		 * @param object JInstallerComponent parent
		 * @return boolean True on success
		 */
		public function uninstall ($parent=null) {

			if(empty($this->path)){
				$this->path = VMPATH_ADMIN;
			}
			//$this->loadVm();
			//include($this->path.DS.'install'.DS.'uninstall.virtuemart.html.php');

			return true;
		}

		/**
		 * Post-process method (e.g. footer HTML, redirect, etc)
		 *
		 * @param string Process type (i.e. install, uninstall, update)
		 * @param object JInstallerComponent parent
		 */
		public function postflight ($type, $parent=null) {
			$_REQUEST['install'] = 0;
			if ($type != 'uninstall') {
				$this->loadVm();
				//fix joomla BE menu
				$model = VmModel::getModel('updatesmigration');


				// 				VmConfig::loadConfig(true);
				if(!class_exists('VirtueMartModelConfig')) require(VMPATH_ADMIN .'/models/config.php');
				$res  = VirtueMartModelConfig::checkConfigTableExists();

				if(!empty($res)){
					vRequest::setVar(vRequest::getFormToken(), '1');
					$config = VmModel::getModel('config');

					$config->setDangerousToolsOff();
				}

			}


			return true;
		}

		/**
		 * copy all $src to $dst folder and remove it
		 *
		 * @author Max Milbers
		 * @param String $src path
		 * @param String $dst path
		 * @param String $type modules, plugins, languageBE, languageFE
		 */
		private function recurse_copy($src,$dst ) {

			$dir = '';
			if(vFolder::exists($src)){
				$dir = opendir($src);
				$this->createIndexFolder($dst);

				if(is_resource($dir)){
					while(false !== ( $file = readdir($dir)) ) {
						if (( $file != '.' ) && ( $file != '..' )) {
							if ( is_dir($src .DS. $file) ) {
								if(!vFolder::create($dst . DS . $file)){
									$app = vFactory::getApplication ();
									$app->enqueueMessage ('Couldnt create folder ' . $dst . DS . $file);
								}
								$this->recurse_copy($src .DS. $file,$dst .DS. $file);
							}
							else {
								if(vFile::exists($dst .DS. $file)){
									if(!vFile::delete($dst .DS. $file)){
										$app = vFactory::getApplication();
										$app -> enqueueMessage('Couldnt delete '.$dst .DS. $file);
									}
								}
								if(!vFile::copy($src .DS. $file,$dst .DS. $file)){
									$app = vFactory::getApplication();
									$app -> enqueueMessage('Couldnt move '.$src .DS. $file.' to '.$dst .DS. $file);
								}
							}
						}
					}
					closedir($dir);
					if (is_dir($src)) vFolder::delete($src);
					return true;
				}
			}

			$app = vFactory::getApplication();
			$app -> enqueueMessage('Couldnt read dir '.$dir.' source '.$src);

		}

		public function displayFinished($update){

			include(VMPATH_ADMIN.'/views/updatesmigration/tmpl/insfinished.php');

		}

	}

} // if(defined)

// pure php no tag