/*
 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
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 */


package com.sun.j2ee.blueprints.petstore.controller.ejb.actions;

import java.util.Map;
import java.util.Iterator;
import java.util.Locale;

// WAF imports
import com.sun.j2ee.blueprints.waf.event.Event;
import com.sun.j2ee.blueprints.waf.event.EventResponse;
import com.sun.j2ee.blueprints.waf.event.EventException;
import com.sun.j2ee.blueprints.waf.controller.ejb.action.EJBActionSupport;

// petstore imports
import com.sun.j2ee.blueprints.petstore.controller.events.CartEvent;
import com.sun.j2ee.blueprints.cart.ejb.ShoppingCartLocal;
import com.sun.j2ee.blueprints.petstore.controller.ejb.ShoppingClientFacadeLocal;
import com.sun.j2ee.blueprints.petstore.util.PetstoreKeys;

public class CartEJBAction extends EJBActionSupport {
    
    public EventResponse perform(Event e) throws EventException {
          
          CartEvent ce = (CartEvent)e;
          ShoppingClientFacadeLocal scf = null;
          scf = (ShoppingClientFacadeLocal)machine.getAttribute(PetstoreKeys.SHOPPING_CLIENT_FACADE);
          ShoppingCartLocal cart = scf.getShoppingCart();
          
          switch (ce.getActionType()) {
              
              case  CartEvent.ADD_ITEM  : {
                  cart.addItem(ce.getItemId());
              }
              break;
              
              case  CartEvent.DELETE_ITEM : { 
                  cart.deleteItem(ce.getItemId());
              }
              break;
              
              case  CartEvent.UPDATE_ITEMS : {
                  Map items = ce.getItems();
                  Iterator it = null;
                  if (items != null) it = items.keySet().iterator();
                  while ((it != null) && it.hasNext()) {
                      String itemId = (String)it.next();
                      int quantity = ((Integer)items.get(itemId)).intValue();
                      cart.updateItemQuantity(itemId, quantity);
                  }
              }
              break;
          }
          return null;
      }
}