<?php

defined ('_JEXEC') or die('Restricted access');
/**
 * abstract class for payment/shipment plugins
 *
 * @package    VirtueMart
 * @subpackage Plugins
 * @author Max Milbers
 * @author Valérie Isaksen
 * @link http://www.virtuemart.net
 * @copyright Copyright (c) 2004 - 2011 VirtueMart Team. All rights reserved.
 * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
 * VirtueMart is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 * @version $Id$
 */
if (!class_exists ('vmPlugin')) {
	require(JPATH_VM_PLUGINS . DS . 'vmplugin.php');
}

abstract class vmPSPlugin extends vmPlugin {

	function __construct (& $subject, $config) {

		parent::__construct ($subject, $config);

		$this->_tablepkey = 'id'; //virtuemart_order_id';
		$this->_idName = 'virtuemart_' . $this->_psType . 'method_id';
		$this->_configTable = '#__virtuemart_' . $this->_psType . 'methods';
		$this->_configTableFieldName = $this->_psType . '_params';
		$this->_configTableFileName = $this->_psType . 'methods';
		$this->_configTableClassName = 'Table' . ucfirst ($this->_psType) . 'methods'; //TablePaymentmethods
		// 		$this->_configTableIdName = $this->_psType.'_jplugin_id';
		$this->_loggable = TRUE;

		$this->_tableChecked = TRUE;
	}

	public function getVarsToPush () {

		$black_list = array('spacer');
		$data = array();
		if (JVM_VERSION === 2) {
			$filename = JPATH_SITE . '/plugins/' . $this->_type . '/' . $this->_name . '/' . $this->_name . '.xml';
		} else {
			$filename = JPATH_SITE . '/plugins/' . $this->_type . '/' . $this->_name . '.xml';
		}
		// Check of the xml file exists
		$filePath = JPath::clean ($filename);
		if (is_file ($filePath)) {
			$xml = JFactory::getXMLParser ('simple');
			$result = $xml->loadFile ($filename);
			if ($result) {
				if ($params = $xml->document->params) {
					foreach ($params as $param) {
						if ($param->_name = "params") {
							if ($children = $param->_children) {
								foreach ($children as $child) {
									if (isset($child->_attributes['name'])) {
										$data[$child->_attributes['name']] = array('', 'char');
										$result = TRUE;
									}
								}
							}
						}
					}
				}
			}
		}

		return $data;
	}

	/**
	 * check if it is the correct type
	 *
	 * @param string $psType either payment or shipment
	 * @return boolean
	 */
	public function selectedThisType ($psType) {

		if ($this->_psType <> $psType) {
			return FALSE;
		} else {
			return TRUE;
		}
	}

	/**
	 * Create the table for this plugin if it does not yet exist.
	 * This functions checks if the called plugin is active one.
	 * When yes it is calling the standard method to create the tables
	 *
	 * @author Valérie Isaksen
	 *
	 */
	protected function onStoreInstallPluginTable ($jplugin_id, $name = FALSE) {

		if ($res = $this->selectedThisByJPluginId ($jplugin_id)) {
			parent::onStoreInstallPluginTable ($this->_psType);
		}
		return $res;
	}

	/**
	 * This event is fired after the payment method has been selected. It can be used to store
	 * additional payment info in the cart.
	 *
	 * @author Max Milbers
	 * @author Valérie isaksen
	 *
	 * @param VirtueMartCart $cart: the actual cart
	 * @return null if the payment was not selected, true if the data is valid, error message if the data is not vlaid
	 *
	 */
	public function onSelectCheck (VirtueMartCart $cart) {

		$idName = $this->_idName; //vmdebug('OnSelectCheck',$idName);
		if (!$this->selectedThisByMethodId ($cart->$idName)) {
			return NULL; // Another method was selected, do nothing
		}
		return TRUE; // this method was selected , and the data is valid by default
	}

	/**
	 * displayListFE
	 * This event is fired to display the pluginmethods in the cart (edit shipment/payment) for example
	 *
	 * @param object  $cart Cart object
	 * @param integer $selected ID of the method selected
	 * @return boolean True on success, false on failures, null when this plugin was not selected.
	 * On errors, JError::raiseWarning (or JError::raiseError) must be used to set a message.
	 *
	 * @author Valerie Isaksen
	 * @author Max Milbers
	 */
	public function displayListFE (VirtueMartCart $cart, $selected = 0, &$htmlIn) {

		if ($this->getPluginMethods ($cart->vendorId) === 0) {
			if (empty($this->_name)) {
				vmAdminInfo ('displayListFE cartVendorId=' . $cart->vendorId);
				$app = JFactory::getApplication ();
				$app->enqueueMessage (JText::_ ('COM_VIRTUEMART_CART_NO_' . strtoupper ($this->_psType)));
				return FALSE;
			} else {
				return FALSE;
			}
		}

		$html = array();
		$method_name = $this->_psType . '_name';
		foreach ($this->methods as $method) {
			if ($this->checkConditions ($cart, $method, $cart->pricesUnformatted)) {

				//$methodSalesPrice = $this->calculateSalesPrice ($cart, $method, $cart->pricesUnformatted);
				/* Because of OPC: the price must not be overwritten directly in the cart */
				$pricesUnformatted= $cart->pricesUnformatted;
				$methodSalesPrice = $this->setCartPrices ($cart, $pricesUnformatted,$method);
				$method->$method_name = $this->renderPluginName ($method);
				$html [] = $this->getPluginHtml ($method, $selected, $methodSalesPrice);
			}
		}
		if (!empty($html)) {
			$htmlIn[] = $html;
			return TRUE;
		}

		return FALSE;
	}

	/*
	 * onSelectedCalculatePrice
	* Calculate the price (value, tax_id) of the selected method
	* It is called by the calculator
	* This function does NOT to be reimplemented. If not reimplemented, then the default values from this function are taken.
	* @author Valerie Isaksen
	* @cart: VirtueMartCart the current cart
	* @cart_prices: array the new cart prices
	* @return null if the method was not selected, false if the shipping rate is not valid any more, true otherwise
	*
	*/

	public function onSelectedCalculatePrice (VirtueMartCart $cart, array &$cart_prices, &$cart_prices_name) {

		$id = $this->_idName;
		if (!($method = $this->selectedThisByMethodId ($cart->$id))) {
			return NULL; // Another method was selected, do nothing
		}

		if (!($method = $this->getVmPluginMethod ($cart->$id))) {
			return NULL;
		}

		$cart_prices_name = '';
		//$cart_prices[$this->_psType . '_tax_id'] = 0;
		$cart_prices['cost'] = 0;

		if (!$this->checkConditions ($cart, $method, $cart_prices)) {
			return FALSE;
		}
		$paramsName = $this->_psType . '_params';
		$cart_prices_name = $this->renderPluginName ($method);

		$this->setCartPrices ($cart, $cart_prices, $method);

		return TRUE;
	}


	/**
	 * onCheckAutomaticSelected
	 * Checks how many plugins are available. If only one, the user will not have the choice. Enter edit_xxx page
	 * The plugin must check first if it is the correct type
	 *
	 * @author Valerie Isaksen
	 * @param VirtueMartCart cart: the cart object
	 * @return null if no plugin was found, 0 if more then one plugin was found,  virtuemart_xxx_id if only one plugin is found
	 *
	 */
	function onCheckAutomaticSelected (VirtueMartCart $cart, array $cart_prices = array(), &$methodCounter = 0) {

		$nbPlugin = 0;
		$virtuemart_pluginmethod_id = 0;

		$nbMethod = $this->getSelectable ($cart, $virtuemart_pluginmethod_id, $cart_prices);
		$methodCounter += $nbMethod;
		if ($nbMethod == NULL) {
			return NULL;
		} else {
			if ($nbMethod == 1) {
				return $virtuemart_pluginmethod_id;
			} else {
				return 0;
			}
		}
	}

	/**
	 * This method is fired when showing the order details in the frontend.
	 * It displays the method-specific data.
	 *
	 * @param integer $order_id The order ID
	 * @return mixed Null for methods that aren't active, text (HTML) otherwise
	 * @author Max Milbers
	 * @author Valerie Isaksen
	 */
	protected function onShowOrderFE ($virtuemart_order_id, $virtuemart_method_id, &$method_info) {

		if (!($this->selectedThisByMethodId ($virtuemart_method_id))) {
			return NULL;
		}
		$method_info = $this->getOrderMethodNamebyOrderId ($virtuemart_order_id);
	}

	/**
	 *
	 * @author Valerie Isaksen
	 * @author Max Milbers
	 * @param int $virtuemart_order_id
	 * @return string pluginName from the plugin table
	 */
	private function getOrderMethodNamebyOrderId ($virtuemart_order_id) {

		$db = JFactory::getDBO ();
		$q = 'SELECT * FROM `' . $this->_tablename . '` '
			. 'WHERE `virtuemart_order_id` = ' . $virtuemart_order_id;
		$db->setQuery ($q);
		$err =$db->getErrorMsg ();
		if (!($pluginInfo = $db->loadObject ())) {
			vmdebug ('Attention, ' . $this->_tablename . ' has not any entry for order_id = '.$virtuemart_order_id);
			if(!empty($err)){
				vmWarn ('Attention, ' . $this->_tablename . ' has not any entry for order_id = '.$virtuemart_order_id. ' err = '.$err);
			}

			return NULL;
		}
		$idName = $this->_psType . '_name';

		return $pluginInfo->$idName;
	}

	/**
	 *
	 * @author Valerie Isaksen
	 * @author Max Milbers
	 * @param int $virtuemart_order_id
	 * @return string pluginName from the plugin table
	 */
	private function getOrderPluginNamebyOrderId ($virtuemart_order_id) {

		$db = JFactory::getDBO ();
		$q = 'SELECT * FROM `' . $this->_tablename . '` '
			. 'WHERE `virtuemart_order_id` = ' . $virtuemart_order_id;
		$db->setQuery ($q);
		if (!($pluginInfo = $db->loadObject ())) {
			vmWarn (500, $q . " getOrderPluginNamebyOrderId " . $db->getErrorMsg ());
			return NULL;
		}
		$idName = $this->_idName;

		return $pluginInfo->$idName;
	}

	/**
	 * check if it is the correct element
	 *
	 * @param string $element either standard or paypal
	 * @return boolean
	 */
	public function selectedThisElement ($element) {

		if ($this->_name <> $element) {
			return FALSE;
		} else {
			return TRUE;
		}
	}

	/**
	 * This method is fired when showing the order details in the backend.
	 * It displays the the payment method-specific data.
	 * All plugins *must* reimplement this method.
	 *
	 * @param integer $_virtuemart_order_id The order ID
	 * @param integer $_paymethod_id Payment method used for this order
	 * @return mixed Null when for payment methods that were not selected, text (HTML) otherwise
	 * @author Max Milbers
	 * @author Valerie Isaksen
	 */
	function onShowOrderBE ($_virtuemart_order_id, $_method_id) {

		return NULL;
	}

	/**
	 * This method is fired when showing when priting an Order
	 * It displays the the payment method-specific data.
	 *
	 * @param integer $_virtuemart_order_id The order ID
	 * @param integer $method_id  method used for this order
	 * @return mixed Null when for payment methods that were not selected, text (HTML) otherwise
	 * @author Valerie Isaksen
	 */
	function onShowOrderPrint ($order_number, $method_id) {

		if (!$this->selectedThisByMethodId ($method_id)) {
			return NULL; // Another method was selected, do nothing
		}
		if (!($order_name = $this->getOrderPluginName ($order_number, $method_id))) {
			return NULL;
		}

		JFactory::getLanguage ()->load ('com_virtuemart');
		$html = '<table class="admintable">' . "\n"
			. '	<thead>' . "\n"
			. '		<tr>' . "\n"
			. '			<td class="key" style="text-align: center;" colspan="2">' . JText::_ ('COM_VIRTUEMART_ORDER_PRINT_' . strtoupper($this->_type) . '_LBL') . '</td>' . "\n"
			. '		</tr>' . "\n"
			. '	</thead>' . "\n"
			. '	<tr>' . "\n"
			. '		<td class="key">' . JText::_ ('COM_VIRTUEMART_ORDER_PRINT_' . strtoupper($this->_type) . '_LBL') . ': </td>' . "\n"
			. '		<td align="left">' . $order_name . '</td>' . "\n"
			. '	</tr>' . "\n";

		$html .= '</table>' . "\n";
		return $html;
	}

	private function getOrderPluginName ($order_number, $pluginmethod_id) {

		$db = JFactory::getDBO ();
		$q = 'SELECT * FROM `' . $this->_tablename . '` WHERE `order_number` = "' . $order_number . '"
		AND `' . $this->_idName . '` =' . $pluginmethod_id;
		$db->setQuery ($q);
		if (!($order = $db->loadObject ())) {
			return NULL;
		}

		$plugin_name = $this->_psType . '_name';
		return $order->$plugin_name;
	}

	/**
	 * Save updated order data to the method specific table
	 *
	 * @param array $_formData Form data
	 * @return mixed, True on success, false on failures (the rest of the save-process will be
	 * skipped!), or null when this method is not actived.
	 * @author Oscar van Eijk
	 */
	public function onUpdateOrder ($formData) {

		return NULL;
	}

	/**
	 * Save updated orderline data to the method specific table
	 *
	 * @param array $_formData Form data
	 * @return mixed, True on success, false on failures (the rest of the save-process will be
	 * skipped!), or null when this method is not actived.
	 * @author Oscar van Eijk
	 */
	public function onUpdateOrderLine ($formData) {

		return NULL;
	}

	/**
	 * OnEditOrderLineBE
	 * This method is fired when editing the order line details in the backend.
	 * It can be used to add line specific package codes
	 *
	 * @param integer $_orderId The order ID
	 * @param integer $_lineId
	 * @return mixed Null for method that aren't active, text (HTML) otherwise
	 * @author Oscar van Eijk
	 */
	public function onEditOrderLineBE ($orderId, $lineId) {

		return NULL;
	}

	/**
	 * This method is fired when showing the order details in the frontend, for every orderline.
	 * It can be used to display line specific package codes, e.g. with a link to external tracking and
	 * tracing systems
	 *
	 * @param integer $_orderId The order ID
	 * @param integer $_lineId
	 * @return mixed Null for method that aren't active, text (HTML) otherwise
	 * @author Oscar van Eijk
	 */
	public function onShowOrderLineFE ($orderId, $lineId) {

		return NULL;
	}

	/**
	 * This event is fired when the  method notifies you when an event occurs that affects the order.
	 * Typically,  the events  represents for payment authorizations, Fraud Management Filter actions and other actions,
	 * such as refunds, disputes, and chargebacks.
	 *
	 * NOTE for Plugin developers:
	 *  If the plugin is NOT actually executed (not the selected payment method), this method must return NULL
	 *
	 * @param      $return_context: it was given and sent in the payment form. The notification should return it back.
	 * Used to know which cart should be emptied, in case it is still in the session.
	 * @param int  $virtuemart_order_id : payment  order id
	 * @param char $new_status : new_status for this order id.
	 * @return mixed Null when this method was not selected, otherwise the true or false
	 *
	 * @author Valerie Isaksen
	 *
	 */
	public function onNotification () {

		return NULL;
	}

	/**
	 * OnResponseReceived
	 * This event is fired when the  method returns to the shop after the transaction
	 *
	 *  the method itself should send in the URL the parameters needed
	 * NOTE for Plugin developers:
	 *  If the plugin is NOT actually executed (not the selected payment method), this method must return NULL
	 *
	 * @param int  $virtuemart_order_id : should return the virtuemart_order_id
	 * @param text $html: the html to display
	 * @return mixed Null when this method was not selected, otherwise the true or false
	 *
	 * @author Valerie Isaksen
	 *
	 */
	function onResponseReceived (&$virtuemart_order_id, &$html) {

		return NULL;
	}

	function getDebug () {

		return $this->_debug;
	}

	function setDebug ($params) {

		return $this->_debug = $params->get ('debug', 0);
	}

	/**
	 * Get Plugin Data for a go given plugin ID
	 *
	 * @author Valérie Isaksen
	 * @param int $pluginmethod_id The method ID
	 * @return  method data
	 */
	final protected function getPluginMethod ($method_id) {

		if (!$this->selectedThisByMethodId ($method_id)) {
			return FALSE;
		}

		return $this->getVmPluginMethod ($method_id);

	}

	/**
	 * Fill the array with all plugins found with this plugin for the current vendor
	 *
	 * @return True when plugins(s) was (were) found for this vendor, false otherwise
	 * @author Oscar van Eijk
	 * @author max Milbers
	 * @author valerie Isaksen
	 */
	protected function getPluginMethods ($vendorId) {

		if (!class_exists ('VirtueMartModelUser')) {
			require(JPATH_VM_ADMINISTRATOR . DS . 'models' . DS . 'user.php');
		}

		$usermodel = VmModel::getModel ('user');
		$user = $usermodel->getUser ();
		$user->shopper_groups = (array)$user->shopper_groups;

		$db = JFactory::getDBO ();

		$select = 'SELECT l.*, v.*, ';

		if (JVM_VERSION === 1) {
			$extPlgTable = '#__plugins';
			$extField1 = 'id';
			$extField2 = 'element';

			$select .= 'j.`' . $extField1 . '`, j.`name`, j.`element`, j.`folder`, j.`client_id`, j.`access`,
				j.`params`,  j.`checked_out`, j.`checked_out_time`,  s.virtuemart_shoppergroup_id ';
		} else {
			$extPlgTable = '#__extensions';
			$extField1 = 'extension_id';
			$extField2 = 'element';

			$select .= 'j.`' . $extField1 . '`,j.`name`, j.`type`, j.`element`, j.`folder`, j.`client_id`, j.`enabled`, j.`access`, j.`protected`, j.`manifest_cache`,
				j.`params`, j.`custom_data`, j.`system_data`, j.`checked_out`, j.`checked_out_time`, j.`state`,  s.virtuemart_shoppergroup_id ';
		}

		$q = $select . ' FROM   `#__virtuemart_' . $this->_psType . 'methods_' . VMLANG . '` as l ';
		$q .= ' JOIN `#__virtuemart_' . $this->_psType . 'methods` AS v   USING (`virtuemart_' . $this->_psType . 'method_id`) ';
		$q .= ' LEFT JOIN `' . $extPlgTable . '` as j ON j.`' . $extField1 . '` =  v.`' . $this->_psType . '_jplugin_id` ';
		$q .= ' LEFT OUTER JOIN `#__virtuemart_' . $this->_psType . 'method_shoppergroups` AS s ON v.`virtuemart_' . $this->_psType . 'method_id` = s.`virtuemart_' . $this->_psType . 'method_id` ';
		$q .= ' WHERE v.`published` = "1" AND j.`' . $extField2 . '` = "' . $this->_name . '"
	    						AND  (v.`virtuemart_vendor_id` = "' . $vendorId . '" OR   v.`virtuemart_vendor_id` = "0")
	    						AND  (';

		foreach ($user->shopper_groups as $groups) {
			$q .= ' s.`virtuemart_shoppergroup_id`= "' . (int)$groups . '" OR';
		}
		$q .= ' (s.`virtuemart_shoppergroup_id`) IS NULL ) GROUP BY v.`virtuemart_' . $this->_psType . 'method_id` ORDER BY v.`ordering`';

		$db->setQuery ($q);

		$this->methods = $db->loadObjectList ();

		$err = $db->getErrorMsg ();
		if (!empty($err)) {
			vmError ('Error reading getPluginMethods ' . $err);
		}
		if ($this->methods) {
			foreach ($this->methods as $method) {
				VmTable::bindParameterable ($method, $this->_xParams, $this->_varsToPushParam);
			}
		}
		// 		vmdebug('getPluginMethods',$this->methods);
		return count ($this->methods);
	}

	/**
	 * Get Method Data for a given Payment ID
	 *
	 * @author Valérie Isaksen
	 * @param int $virtuemart_order_id The order ID
	 * @return  $methodData
	 */
	final protected function getDataByOrderId ($virtuemart_order_id) {

		$db = JFactory::getDBO ();
		$q = 'SELECT * FROM `' . $this->_tablename . '` '
			. 'WHERE `virtuemart_order_id` = ' . $virtuemart_order_id;

		$db->setQuery ($q);
		$methodData = $db->loadObject ();

		return $methodData;
	}

	/**
	 * Get Method Datas for a given Payment ID
	 *
	 * @author Valérie Isaksen
	 * @param int $virtuemart_order_id The order ID
	 * @return  $methodData
	 */
	final protected function getDatasByOrderId ($virtuemart_order_id) {

		$db = JFactory::getDBO ();
		$q = 'SELECT * FROM `' . $this->_tablename . '` '
			. 'WHERE `virtuemart_order_id` = ' . $virtuemart_order_id;

		$db->setQuery ($q);
		$methodData = $db->loadObjectList ();

		return $methodData;
	}

	/**
	 * Get the total weight for the order, based on which the proper shipping rate
	 * can be selected.
	 *
	 * @param object $cart Cart object
	 * @return float Total weight for the order
	 * @author Oscar van Eijk
	 */
	protected function getOrderWeight (VirtueMartCart $cart, $to_weight_unit) {

		static $weight = 0.0;
		if(count($cart->products)>0 and empty($weight)){
			foreach ($cart->products as $product) {
				vmdebug('getOrderWeight',$product->product_weight);
				$weight += (ShopFunctions::convertWeigthUnit ($product->product_weight, $product->product_weight_uom, $to_weight_unit) * $product->quantity);
			}
		}
		return $weight;
	}

	/**
	 * getThisName
	 * Get the name of the method
	 *
	 * @param int $id The method ID
	 * @author Valérie Isaksen
	 * @return string Shipment name
	 */
	final protected function getThisName ($virtuemart_method_id) {

		$db = JFactory::getDBO ();
		$q = 'SELECT `' . $this->_psType . '_name` '
			. 'FROM #__virtuemart_' . $this->_psType . 'methods '
			. 'WHERE ' . $this->_idName . ' = "' . $virtuemart_method_id . '" ';
		$db->setQuery ($q);
		return $db->loadResult (); // TODO Error check
	}


	/**
	 * Extends the standard function in vmplugin. Extendst the input data by virtuemart_order_id
	 * Calls the parent to execute the write operation
	 *
	 * @author Max Milbers
	 * @param array  $_values
	 * @param string $_table
	 */
	protected function storePSPluginInternalData ($values, $primaryKey = 0, $preload = FALSE) {

		if (!class_exists ('VirtueMartModelOrders')) {
			require(JPATH_VM_ADMINISTRATOR . DS . 'models' . DS . 'orders.php');
		}
		if (!isset($values['virtuemart_order_id'])) {
			$values['virtuemart_order_id'] = VirtueMartModelOrders::getOrderIdByOrderNumber ($values['order_number']);
		}
		return $this->storePluginInternalData ($values, $primaryKey, 0, $preload);
	}

	/**
	 * Something went wrong, Send notification to all administrators
	 *
	 * @param string subject of the mail
	 * @param string message
	 */
	protected function sendEmailToVendorAndAdmins ($subject, $message) {

		// recipient is vendor and admin
		$vendorId = 1;
		$vendorModel = VmModel::getModel ('vendor');
		$vendorEmail = $vendorModel->getVendorEmail ($vendorId);
		$vendorName = $vendorModel->getVendorName ($vendorId);
		JUtility::sendMail ($vendorEmail, $vendorName, $vendorEmail, $subject, $message);
		if (JVM_VERSION === 1) {
			//get all super administrator
			$query = 'SELECT name, email, sendEmail' .
				' FROM #__users' .
				' WHERE LOWER( usertype ) = "super administrator"';
		} else {
			$query = 'SELECT name, email, sendEmail' .
				' FROM #__users' .
				' WHERE sendEmail=1';
		}
		$db = JFactory::getDBO ();
		$db->setQuery ($query);
		$rows = $db->loadObjectList ();

		$subject = html_entity_decode ($subject, ENT_QUOTES);

		// get superadministrators id
		foreach ($rows as $row) {
			if ($row->sendEmail) {
				$message = html_entity_decode ($message, ENT_QUOTES);
				JUtility::sendMail ($vendorEmail, $vendorName, $row->email, $subject, $message);
			}
		}
	}

	/**
	 * displays the logos of a VirtueMart plugin
	 *
	 * @author Valerie Isaksen
	 * @author Max Milbers
	 * @param array $logo_list
	 * @return html with logos
	 */
	protected function displayLogos ($logo_list) {

		$img = "";

		if (!(empty($logo_list))) {
			$url = JURI::root () . 'images/stories/virtuemart/' . $this->_psType . '/';
			if (!is_array ($logo_list)) {
				$logo_list = (array)$logo_list;
			}
			foreach ($logo_list as $logo) {
				$alt_text = substr ($logo, 0, strpos ($logo, '.'));
				$img .= '<span class="vmCartPaymentLogo" ><img align="middle" src="' . $url . $logo . '"  alt="' . $alt_text . '" /></span> ';
			}
		}
		return $img;
	}

	/**
	 * @param $plugin plugin
	 */

	protected function renderPluginName ($plugin) {

		$return = '';
		$plugin_name = $this->_psType . '_name';
		$plugin_desc = $this->_psType . '_desc';
		$description = '';
		// 		$params = new JParameter($plugin->$plugin_params);
		// 		$logo = $params->get($this->_psType . '_logos');
		$logosFieldName = $this->_psType . '_logos';
		$logos = $plugin->$logosFieldName;
		if (!empty($logos)) {
			$return = $this->displayLogos ($logos) . ' ';
		}
		if (!empty($plugin->$plugin_desc)) {
			$description = '<span class="' . $this->_type . '_description">' . $plugin->$plugin_desc . '</span>';
		}
		$pluginName = $return . '<span class="' . $this->_type . '_name">' . $plugin->$plugin_name . '</span>' . $description;
		return $pluginName;
	}

	protected function getPluginHtml ($plugin, $selectedPlugin, $pluginSalesPrice) {

		$pluginmethod_id = $this->_idName;
		$pluginName = $this->_psType . '_name';
		if ($selectedPlugin == $plugin->$pluginmethod_id) {
			$checked = 'checked="checked"';
		} else {
			$checked = '';
		}

		if (!class_exists ('CurrencyDisplay')) {
			require(JPATH_VM_ADMINISTRATOR . DS . 'helpers' . DS . 'currencydisplay.php');
		}
		$currency = CurrencyDisplay::getInstance ();
		$costDisplay = "";
		if ($pluginSalesPrice) {
			$costDisplay = $currency->priceDisplay ($pluginSalesPrice);
			$costDisplay = '<span class="' . $this->_type . '_cost"> (' . JText::_ ('COM_VIRTUEMART_PLUGIN_COST_DISPLAY') . $costDisplay . ")</span>";
		}

		$html = '<input type="radio" name="' . $pluginmethod_id . '" id="' . $this->_psType . '_id_' . $plugin->$pluginmethod_id . '"   value="' . $plugin->$pluginmethod_id . '" ' . $checked . ">\n"
			. '<label for="' . $this->_psType . '_id_' . $plugin->$pluginmethod_id . '">' . '<span class="' . $this->_type . '">' . $plugin->$pluginName . $costDisplay . "</span></label>\n";

		return $html;
	}

	/**
	 *
	 */

	protected function getHtmlHeaderBE () {

		$class = "class='key'";
		$html = ' 	<thead>' . "\n"
			. '		<tr>' . "\n"
			. '			<th ' . $class . ' style="text-align: center;" colspan="2">' . JText::_ ('COM_VIRTUEMART_ORDER_PRINT_' . strtoupper($this->_psType) . '_LBL') . '</th>' . "\n"
			. '		</tr>' . "\n"
			. '	</thead>' . "\n";

		return $html;
	}

	/**
	 *
	 */

	protected function getHtmlRow ($key, $value, $class = '') {

		$lang = JFactory::getLanguage ();
		$key_text = '';
		$complete_key = strtoupper ($this->_type . '_' . $key);
		// vmdebug('getHtmlRow',$key,$complete_key);
		// vmdebug('getHtmlRow',$key,$complete_key);
		if ($lang->hasKey($complete_key)) {
			$key_text = JText::_ ($complete_key);
		} else {
			$key_text = JText::_ ($key);
		}
		$more_key = $complete_key . '_' . $value;
		if ($lang->hasKey ($more_key)) {
			$value .= " (" . JText::_ ($more_key) . ")";
		}
		$html = "<tr>\n<td " . $class . ">" . $key_text . "</td>\n <td align='left'>" . $value . "</td>\n</tr>\n";
		return $html;
	}

	protected function getHtmlRowBE ($key, $value) {

		return $this->getHtmlRow ($key, $value, "class='key'");
	}

	/**
	 * getSelectable
	 * This method returns the number of valid methods
	 *
	 * @param VirtueMartCart cart: the cart object
	 * @param $method_id eg $virtuemart_shipmentmethod_id
	 *
	 */

	function getSelectable (VirtueMartCart $cart, &$method_id, $cart_prices) {

		$nbMethod = 0;

		if ($this->getPluginMethods ($cart->vendorId) === 0) {
			return FALSE;
		}

		foreach ($this->methods as $method) {
			if ($nb = (int)$this->checkConditions ($cart, $method, $cart_prices)) {
				$nbMethod = $nbMethod + $nb;
				$idName = $this->_idName;
				$method_id = $method->$idName;
			}
		}
		return $nbMethod;
	}

	/**
	 *
	 * Enter description here ...
	 *
	 * @author Valerie Isaksen
	 * @author Max Milbers
	 * @param VirtueMartCart $cart
	 * @param int            $method
	 * @param array          $cart_prices
	 */
	protected function checkConditions ($cart, $method, $cart_prices) {

		vmAdminInfo ('vmPsPlugin function checkConditions not overriden, gives always back FALSE');
		return FALSE;
	}

	function getCosts (VirtueMartCart $cart, $method, $cart_prices) {

		return 0;
	}

	function getPaymentCurrency (&$method, $getCurrency = FALSE) {

		if (!isset($method->payment_currency) or empty($method->payment_currency) or !$method->payment_currency or $getCurrency) {
			// 	    if (!class_exists('VirtueMartModelVendor')) require(JPATH_VM_ADMINISTRATOR . DS . 'models' . DS . 'vendor.php');
			$vendorId = 1; //VirtueMartModelVendor::getLoggedVendor();
			$db = JFactory::getDBO ();

			$q = 'SELECT   `vendor_currency` FROM `#__virtuemart_vendors` WHERE `virtuemart_vendor_id`=' . $vendorId;
			$db->setQuery ($q);
			$method->payment_currency = $db->loadResult ();
		}
	}

	function getEmailCurrency (&$method) {

		if (!isset($method->email_currency)  or $method->email_currency=='vendor') {
			// 	    if (!class_exists('VirtueMartModelVendor')) require(JPATH_VM_ADMINISTRATOR . DS . 'models' . DS . 'vendor.php');
			$vendorId = 1; //VirtueMartModelVendor::getLoggedVendor();
			$db = JFactory::getDBO ();

			$q = 'SELECT   `vendor_currency` FROM `#__virtuemart_vendors` WHERE `virtuemart_vendor_id`=' . $vendorId;
			$db->setQuery ($q);
			return $db->loadResult ();
		} else {
			return $method->payment_currency; // either the vendor currency, either same currency as payment
		}
	}

	/**
	 * displayTaxRule
	 *
	 * @param int $tax_id
	 * @return string $html:
	 */

	function displayTaxRule ($tax_id) {

		$html = '';
		$db = JFactory::getDBO ();
		if (!empty($tax_id)) {
			$q = 'SELECT * FROM #__virtuemart_calcs WHERE `virtuemart_calc_id`="' . $tax_id . '" ';
			$db->setQuery ($q);
			$taxrule = $db->loadObject ();

			$html = $taxrule->calc_name . '(' . $taxrule->calc_kind . ':' . $taxrule->calc_value_mathop . $taxrule->calc_value . ')';
		}
		return $html;
	}

	/**
	 * update the plugin cart_prices
	 *
	 * @author Valérie Isaksen
	 *
	 * @param $cart_prices: $cart_prices['salesPricePayment'] and $cart_prices['paymentTax'] updated. Displayed in the cart.
	 * @param $value :   fee
	 * @param $tax_id :  tax id
	 */

	function setCartPrices (VirtueMartCart $cart, &$cart_prices, $method) {


		if (!class_exists ('calculationHelper')) {
			require(JPATH_VM_ADMINISTRATOR . DS . 'helpers' . DS . 'calculationh.php');
		}

		$calculator = calculationHelper::getInstance ();
		$value = $calculator->roundInternal ($this->getCosts ($cart, $method, $cart_prices), 'salesPrice');
		$_psType = ucfirst ($this->_psType);
		$cart_prices[$this->_psType . 'Value'] = $value;

		$taxrules = array();
		if(isset($method->tax_id) and (int)$method->tax_id === -1){

		} else if (!empty($method->tax_id)) {
			$cart_prices[$this->_psType . '_calc_id'] = $method->tax_id;

			$db = JFactory::getDBO ();
			$q = 'SELECT * FROM #__virtuemart_calcs WHERE `virtuemart_calc_id`="' . $method->tax_id . '" ';
			$db->setQuery ($q);
			$taxrules = $db->loadAssocList ();
		} else {
			//This construction makes trouble, if there are products with different vats in the cart
			//on the other side, it is very unlikely to have different vats in the cart and simultan it is not possible to use a fixed tax rule for the shipment
			if(!empty($calculator->_cartData['VatTax']) and count ($calculator->_cartData['VatTax']) == 1){
				$taxrules = $calculator->_cartData['VatTax'];
				foreach($taxrules as &$rule){
					$rule['subTotal'] = $cart_prices[$this->_psType . 'Value'];
				}

			} else {
				$taxrules = $calculator->_cartData['taxRulesBill'];
				foreach($taxrules as &$rule){
					unset($rule['subTotal']);
				}
			}
		}
		
		if (count ($taxrules) > 0) {

			$cart_prices['salesPrice' . $_psType] = $calculator->roundInternal ($calculator->executeCalculation ($taxrules, $cart_prices[$this->_psType . 'Value'],false,false), 'salesPrice');
			$cart_prices[$this->_psType . 'Tax'] = $calculator->roundInternal (($cart_prices['salesPrice' . $_psType] - $cart_prices[$this->_psType . 'Value']), 'salesPrice');
			reset($taxrules);
			$taxrule =  current($taxrules);
			$cart_prices[$this->_psType . '_calc_id'] = $taxrule['virtuemart_calc_id'];

		} else {
			$cart_prices['salesPrice' . $_psType] = $value;
			$cart_prices[$this->_psType . 'Tax'] = 0;
			$cart_prices[$this->_psType . '_calc_id'] = 0;
		}
		return $cart_prices['salesPrice' . $_psType];
	}

	/**
	 * calculateSalesPrice
	 *
	 * @param $value
	 * @param $tax_id: tax id
	 * @return $salesPrice
	 */

	protected function calculateSalesPrice ($cart, $method, $cart_prices) {

		return $this -> setCartPrices($cart,$cart_prices,$method);
	}


	/**
	 * logPaymentInfo
	 * to help debugging Payment notification for example
	 */
	protected function logInfo ($text, $type = 'message') {

		if ($this->_debug) {
			$file = JPATH_ROOT . "/logs/" . $this->_name . ".log";
			$date = JFactory::getDate ();

			$fp = fopen ($file, 'a');
			fwrite ($fp, "\n\n" . $date->toFormat ('%Y-%m-%d %H:%M:%S'));
			fwrite ($fp, "\n" . $type . ': ' . $text);
			fclose ($fp);
		}
	}

	public function processConfirmedOrderPaymentResponse ($returnValue, $cart, $order, $html, $payment_name, $new_status = '') {

		if ($returnValue == 1) {
			//We delete the old stuff
			// send the email only if payment has been accepted
			// update status

			$modelOrder = VmModel::getModel ('orders');
			$order['order_status'] = $new_status;
			$order['customer_notified'] = 1;
			$order['comments'] = '';
			$modelOrder->updateStatusForOneOrder ($order['details']['BT']->virtuemart_order_id, $order, TRUE);

			$order['paymentName'] = $payment_name;
			//if(!class_exists('shopFunctionsF')) require(JPATH_VM_SITE.DS.'helpers'.DS.'shopfunctionsf.php');
			//shopFunctionsF::sentOrderConfirmedEmail($order);
			//We delete the old stuff
			$cart->emptyCart ();
			JRequest::setVar ('html', $html);
			// payment echos form, but cart should not be emptied, data is valid
		} elseif ($returnValue == 2) {
			$cart->_confirmDone = FALSE;
			$cart->_dataValidated = FALSE;
			$cart->setCartIntoSession ();
			JRequest::setVar ('html', $html);
		} elseif ($returnValue == 0) {
			// error while processing the payment
			$mainframe = JFactory::getApplication ();
			$mainframe->enqueueMessage ($html);
			$mainframe->redirect (JRoute::_ ('index.php?option=com_virtuemart&view=cart',FALSE), JText::_ ('COM_VIRTUEMART_CART_ORDERDONE_DATA_NOT_VALID'));
		}
	}

	function emptyCart ($session_id = NULL, $order_number = NULL) {

		if (!class_exists ('VirtueMartCart')) {
			require(JPATH_VM_SITE . DS . 'helpers' . DS . 'cart.php');
		}
		$this->logInfo ('Notification: emptyCart ' . $session_id, 'message');
		if ($session_id != NULL and $order_number != NULL) {
			// Recover session from the storage session in wich the payment is done
			$this->emptyCartFromStorageSession ($session_id, $order_number);
		} else {

			$cart = VirtueMartCart::getCart ();
			$cart->emptyCart ();
		}
		return TRUE;
	}

	/*
		 * recovers the session from Storage, and only empty the cart if it has not been done already
		 */
	function emptyCartFromStorageSession ($session_id, $order_number) {

		$conf = JFactory::getConfig ();
		$handler = $conf->get ('session_handler', 'none');

		$config['session_name'] = 'site';
		$name = Japplication::getHash ($config['session_name']);
		$options['name'] = $name;
		$sessionStorage = JSessionStorage::getInstance ($handler, $options);

		// The session store MUST be registered.
		$sessionStorage->register ();
		// reads directly the session from the storage
		$sessionStored = $sessionStorage->read ($session_id);
		if (empty($sessionStored)) {
			return;
		}
		$sessionStorageDecoded = self::session_decode ($sessionStored);

		$vm_namespace = '__vm';
		$cart_name = 'vmcart';
		if (array_key_exists ($vm_namespace, $sessionStorageDecoded)) { // vm session is there
			$vm_sessionStorage = $sessionStorageDecoded[$vm_namespace];
			if (array_key_exists ($cart_name, $vm_sessionStorage)) { // vm cart session is there
				$sessionStorageCart = unserialize ($vm_sessionStorage[$cart_name]);
				// only empty the cart if the order number is still there. If not there, it means that the cart has already been emptied.
				if ($sessionStorageCart->order_number == $order_number) {
					if (!class_exists ('VirtueMartCart')) {
						require(JPATH_VM_SITE . DS . 'helpers' . DS . 'cart.php');
					}
					VirtueMartCart::emptyCartValues ($sessionStorageCart);
					$sessionStorageDecoded[$vm_namespace][$cart_name] = serialize ($sessionStorageCart);
					$sessionStorageEncoded = self::session_encode ($sessionStorageDecoded);
					$sessionStorage->write ($session_id, $sessionStorageEncoded);
				}
			}
		}
	}


	private static function session_decode ($session_data) {

		$decoded_session = array();
		$offset = 0;
		while ($offset < strlen ($session_data)) {
			if (!strstr (substr ($session_data, $offset), "|")) {
				return array();
			}
			$pos = strpos ($session_data, "|", $offset);
			$num = $pos - $offset;
			$varname = substr ($session_data, $offset, $num);
			$offset += $num + 1;
			$data = unserialize (substr ($session_data, $offset));
			$decoded_session[$varname] = $data;
			$offset += strlen (serialize ($data));
		}
		return $decoded_session;
	}


	private static function session_encode ($session_data_array) {

		$encoded_session = "";
		foreach ($session_data_array as $key => $session_data) {
			$encoded_session .= $key . "|" . serialize ($session_data);
		}
		return $encoded_session;
	}

	/**
	 * get_passkey
	 * Retrieve the payment method-specific encryption key
	 *
	 * @author Oscar van Eijk
	 * @author Valerie Isaksen
	 * @return mixed
	 * @deprecated
	 */
	function get_passkey () {

		return TRUE;
		$_db = JFactory::getDBO ();
		$_q = 'SELECT ' . VM_DECRYPT_FUNCTION . "(secret_key, '" . ENCODE_KEY . "') as passkey "
			. 'FROM #__virtuemart_paymentmethods '
			. "WHERE virtuemart_paymentmethod_id='" . (int)$this->_virtuemart_paymentmethod_id . "'";
		$_db->setQuery ($_q);
		$_r = $_db->loadAssoc (); // TODO Error check
		return $_r['passkey'];
	}

	/**
	 * validateVendor
	 * Check if this plugin has methods for the current vendor.
	 *
	 * @author Oscar van Eijk
	 * @param integer $_vendorId The vendor ID taken from the cart.
	 * @return True when a  id was found for this vendor, false otherwise
	 *
	 * @deprecated ????
	 */
	protected function validateVendor ($_vendorId) {

		if (!$_vendorId) {
			$_vendorId = 1;
		}

		$_db = JFactory::getDBO ();

		if (JVM_VERSION === 1) {
			$_q = 'SELECT 1 '
				. 'FROM   #__virtuemart_' . $this->_psType . 'methods v '
				. ',      #__plugins             j '
				. 'WHERE j.`element` = "' . $this->_name . '" '
				. 'AND   v.`' . $this->_psType . '_jplugin_id` = j.`id` '
				. 'AND   v.`virtuemart_vendor_id` = "' . $_vendorId . '" '
				. 'AND   v.`published` = 1 ';
		} else {
			$_q = 'SELECT 1 '
				. 'FROM   #__virtuemart_' . $this->_psType . 'methods AS v '
				. ',      #__extensions   AS     j '
				. 'WHERE j.`folder` = "' . $this->_type . '" '
				. 'AND j.`element` = "' . $this->_name . '" '
				. 'AND   v.`' . $this->_psType . '_jplugin_id` = j.`extension_id` '
				. 'AND   v.`virtuemart_vendor_id` = "' . $_vendorId . '" '
				. 'AND   v.`published` = 1 ';
		}

		$_db->setQuery ($_q);
		$_r = $_db->loadAssoc ();

		if ($_r) {
			return TRUE;
		} else {
			return FALSE;
		}
	}

	function handlePaymentUserCancel ($virtuemart_order_id) {

		if ($virtuemart_order_id) {
			// set the order to cancel , to handle the stock correctly
			if (!class_exists ('VirtueMartModelOrders')) {
				require(JPATH_VM_ADMINISTRATOR . DS . 'models' . DS . 'orders.php');
			}

			$modelOrder = VmModel::getModel ('orders');
			$order['order_status'] = 'X';
			$order['virtuemart_order_id'] = $virtuemart_order_id;
			$order['customer_notified'] = 0;
			$order['comments'] = JText::_ ('COM_VIRTUEMART_PAYMENT_CANCELLED_BY_SHOPPER');
			$modelOrder->updateStatusForOneOrder ($virtuemart_order_id, $order, TRUE);
			//$modelOrder->remove (array('virtuemart_order_id' => $virtuemart_order_id));
		}
	}

}
