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Created: Wed, Oct 8, 12:49 AM

coupons_event_handler.php
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	<?php
	/**
	* @version $Id: coupons_event_handler.php 14641 2011-10-05 15:31:23Z alex $
	* @package In-Commerce
	* @copyright Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
	* @license Commercial License
	* This software is protected by copyright law and international treaties.
	* Unauthorized reproduction or unlicensed usage of the code of this program,
	* or any portion of it may result in severe civil and criminal penalties,
	* and will be prosecuted to the maximum extent possible under the law
	* See http://www.in-portal.org/commercial-license for copyright notices and details.
	*/

	defined('FULL_PATH') or die('restricted access!');

	class CouponsEventHandler extends kDBEventHandler {

	/**
	* Allows to override standart permission mapping
	*
	*/
	function mapPermissions()
	{
	parent::mapPermissions();
	$permissions = Array(
	'OnItemBuild' => Array('self' => true),
	'OnApplyClone' => Array('self' => 'add'),
	'OnPrepareClone' => Array('self' => 'view'),
	);

	$this->permMapping = array_merge($this->permMapping, $permissions);
	}

	/**
	* Prepares coupon cloning
	*
	* @param kEvent $event
	*/
	function OnPrepareClone(&$event)
	{
	$this->StoreSelectedIDs($event);

	$event->CallSubEvent('OnNew');

	$object =& $event->getObject();
	/* @var $object kDBItem */

	$this->setCloningRequired($object);
	$clone_count = $this->Application->RecallVar('CoupLastCloneCount');

	if ( is_numeric($clone_count) && $clone_count > 0 ) {
	$object->SetDBField('CouponCount', $clone_count);
	}

	$expire_days = $this->Application->ConfigValue('Comm_DefaultCouponDuration');
	$default_expiration = strtotime('+' . $expire_days . ' days');

	$object->SetDBField('DefaultExpiration_date', $default_expiration);
	$object->SetDBField('DefaultExpiration_time', $default_expiration);
	}

	/**
	* Occurs before an item has been cloned
	* Id of newly created item is passed as event' 'id' param
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeClone(&$event)
	{
	parent::OnBeforeClone($event);

	$object =& $event->getObject();
	/* @var $object kDBItem */

	$this->SetNewCode($object);

	$object->SetDBField('LastUsedBy', NULL);
	$object->SetDBField('LastUsedOn', NULL);
	$object->SetDBField('NumberOfUses', NULL);

	$expiration = $this->Application->GetVar('clone_coupon_expiration');
	$object->SetDBField('Expiration_date', $expiration);
	$object->SetDBField('Expiration_time', $expiration);
	}

	function OnApplyClone(&$event)
	{
	if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
	$event->status = kEvent::erFAIL;
	return;
	}

	$object =& $event->getObject( Array ('skip_autoload' => true) );
	/* @var $object kDBItem */

	$this->setCloningRequired($object);

	$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
	list($id, $field_values) = each($items_info);
	$object->SetFieldsFromHash($field_values);
	$object->setID($id);

	if ( !$object->Validate() ) {
	$event->status = kEvent::erFAIL;
	return ;
	}

	$temp =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');
	/* @var $temp kTempTablesHandler */

	$original_coupon_ids = $this->getSelectedIDs($event, true);
	$clone_count = $object->GetDBField('CouponCount');
	$this->Application->StoreVar('CoupLastCloneCount', $clone_count);
	$this->Application->SetVar('clone_coupon_expiration', $object->GetDBField('DefaultExpiration'));

	for ($i = 0; $i < $clone_count; $i++) {
	$temp->CloneItems($event->Prefix, $event->Special, $original_coupon_ids);
	}

	$event->SetRedirectParam('opener', 'u');
	}

	/**
	* Sets fields required during coupon cloning
	*
	* @param kDBItem $object
	* @return void
	* @access protected
	*/
	protected function setCloningRequired(&$object)
	{
	$this->RemoveRequiredFields($object);
	$object->setRequired('CouponCount');
	$object->setRequired('DefaultExpiration');
	}

	function SetNewCode(&$item)
	{
	do{
	$new_code = $this->RandomCouponCode();
	$exists = $this->Conn->GetOne('SELECT COUNT(*) FROM '.TABLE_PREFIX.'ProductsCoupons WHERE Code='.$this->Conn->qstr($new_code));
	if ($exists){
	$new_code = false;
	}
	} while (!$new_code);

	$item->SetDBField('Code', $new_code);
	}

	function RandomCouponCode()
	{
	$rand_code = '';

	for ($i = 0; $i < 10; $i++) {
	$is_letter = rand(0, 1);
	$rand_code .= ($is_letter ? chr(rand(65, 90)) : rand(0, 9));
	}

	return $rand_code;
	}

	/**
	* Prepare temp tables for creating new item
	* but does not create it. Actual create is
	* done in OnPreSaveCreated
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnPreCreate(&$event)
	{
	parent::OnPreCreate($event);

	$object =& $event->getObject();
	/* @var $object kDBItem */

	$exp_date = adodb_mktime();
	$default_duration = $this->Application->ConfigValue('Comm_DefaultCouponDuration');

	if ( $default_duration && $default_duration > 0 ) {
	$exp_date += (int)$default_duration * 86400;
	}

	$object->SetDBField('Expiration_date', $exp_date);
	}

	/**
	* Occurs before updating item
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemUpdate(&$event)
	{
	parent::OnBeforeItemUpdate($event);

	$this->itemChanged($event);
	}

	/**
	* Occurs before creating item
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemCreate(&$event)
	{
	parent::OnBeforeItemCreate($event);

	$this->itemChanged($event);
	}

	/**
	* Occurs before item is changed
	*
	* @param kEvent $event
	*/
	function itemChanged(&$event)
	{
	$object =& $event->getObject();
	/* @var $object kDBItem */

	$object->SetDBField('Amount', abs($object->GetDBField('Amount')));
	}
	}

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