<?php

	class OrderItemsEventHandler extends kDBEventHandler
	{


		/**
		 * Allows to override standart permission mapping
		 *
		 */
		function mapPermissions()
		{
			parent::mapPermissions();
			$permissions = Array(
									'OnSaveItems'	=>	Array('subitem' => 'add|edit'),
							);
			$this->permMapping = array_merge($this->permMapping, $permissions);
		}

		/**
		 * Processes item selection from popup item selector
		 *
		 * @param kEvent $event
		 */
		function OnProcessSelected(&$event)
		{
			$object =& $event->getObject( Array('skip_autoload' => true) );

			$selected_ids = $this->Application->GetVar('selected_ids');
			$product_ids = $selected_ids['p'];

			if ($product_ids) {
				//after adding Options Selection during adding products to order in admin, selector is in single mode
				// = allows selecting one item at a time, but we leave this code just in case :)
				$product_ids = explode(',', $product_ids);

				$product_object =& $this->Application->recallObject('p.-item', null, array('skip_autoload' => true));
				$orders_h =& $this->Application->recallObject('ord_EventHandler');
				/* @var $orders_h OrdersEventHandler */
				
				foreach ($product_ids as $product_id) {
					$product_object->Load($product_id);
					if ($product_object->GetDBField('HasRequiredOptions')) {
						$event->SetRedirectParam('opener', 'u');

						$current_stack_name = rtrim('opener_stack_'.$this->Application->GetVar('m_wid'), '_');
						$current_opener_stack = $this->Application->RecallVar($current_stack_name);
						$current_opener_stack = $current_opener_stack ? unserialize($current_opener_stack) : Array();


						// actually it should be real parent_wid for the thing to work in popups mode
						// but currently there is no way to get that here
						$parent_wid = '';

						$parent_stack_name = rtrim('opener_stack_'.$parent_wid, '_');
						$parent_opener_stack = $this->Application->RecallVar($parent_stack_name);
						$parent_opener_stack = $parent_opener_stack ? unserialize($parent_opener_stack) : Array();

						$current_url = preg_replace('/(:m[0-9]+-[^-]*-[^-]*-[^-]*-)(s)(-.*)/', '\1u\3', array_pop($current_opener_stack));

						array_push($parent_opener_stack, $current_url);

						$new_level = $this->Application->BuildEnv(
							'in-commerce/orders/order_product_edit',
							Array($event->Prefix.'_event' => 'OnNew', 'm_wid' => $parent_wid, 'p_id' => $product_id, 'm_opener' => 's'),
							'm,ord,p',
							true
						);
						array_push($current_opener_stack, 'index.php|'.ltrim($new_level, ENV_VAR_NAME.'=') );

						$this->Application->StoreVar($current_stack_name, serialize($current_opener_stack));
						$this->Application->StoreVar($parent_stack_name, serialize($parent_opener_stack));

						return ;
					}
					else {
						// 1 for PacakgeNum - temporary solution to overcome splitting into separate sub-orders
						// of orders with items added through admin when approving them
						$orders_h->AddItemToOrder($event, $product_id, null, 1);
					}
				}
			}

			$this->finalizePopup($event);
		}

		/**
		 * Updates subtotal field in order record
		 *
		 * @param kEvent $event
		 */
		function OnUpdate(&$event)
		{
			parent::OnUpdate($event);
			if( !($this->Application->GetVar('t') == 'in-commerce/orders/orders_edit_items') ) return true;

			$object =& $event->getObject();

			$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );

			if($items_info)
			{
				$sub_total = 0;
				foreach($items_info as $id => $field_values)
				{
	 				$sub_total += $field_values['Quantity']*$field_values['Price'];
				}
			}
			else {
				return; // no need to update subtotal if there was no items_info
			}

			$table_info = $object->getLinkedInfo();
			$main_object =& $this->Application->recallObject($table_info['ParentPrefix']);
			$main_object->SetDBField('SubTotal', $sub_total);
			$main_object->Update();
		}

		/**
		 * Saves selected items
		 *
		 * @param kEvent $event
		 */
		function OnSaveItems(&$event)
		{
			$event->CallSubEvent('OnUpdate');
			$event->redirect = false;
			$event->redirect_params = Array('opener'=>'s','pass'=>'all');
		}

		/**
		 * Occures after an item has been cloned
		 * Id of newly created item is passed as event' 'id' param
		 *
		 * @param kEvent $event
		 */
		function OnAfterClone(&$event)
		{
			$id = $event->getEventParam('id');
			$table = $this->Application->getUnitOption($event->Prefix,'TableName');
			$id_field = $this->Application->getUnitOption($event->Prefix,'IDField');
			$sql = 'UPDATE '.$table.' SET QuantityReserved = NULL WHERE '.$id_field.' = '.$id;
			$this->Conn->Query($sql);
		}

		function OnAfterItemLoad(&$event)
		{
			$object =& $event->getObject();
			if( $item_info = $object->GetDBField('ItemData') )
			{
				$item_info = unserialize($item_info);
				$object->SetDBField('DiscountType', getArrayValue($item_info, 'DiscountType'));
				$object->SetDBField('DiscountId', getArrayValue($item_info, 'DiscountId'));
			}
		}


		function SetCustomQuery(&$event)
		{
			parent::SetCustomQuery($event);

			$object =& $event->getObject();

			$package_num = $event->getEventParam('package_num');
			if ($package_num) $object->addFilter('package_num', 'PackageNum = '.$package_num);

			$type = $event->getEventParam('product_type');
			if ($type) {
				$object->addFilter('product_type', 'p.Type ='.$type);
			}
		}
	}

?>