package org.paneris.jammyjoes.shopping;

 import org.melati.Melati;

 import org.paneris.jammyjoes.model.JammyjoesDatabase;

 import org.paneris.jammyjoes.model.Product;

 import org.paneris.jammyjoes.model.ShopOrder;

 import org.paneris.jammyjoes.model.ShopOrderItem;

 public class JammyJoesShoppingTrolleyItem extends ShoppingTrolleyItem {

   private Product product;

   private JammyJoesShoppingTrolley jammyjoesShoppingTrolley;

   public void initialise(

     ShoppingTrolley trolley,

     Melati melati,

     Integer id,

     String description,

     Double price) {

     super.initialise(trolley, melati, id, description, price);

     jammyjoesShoppingTrolley = (JammyJoesShoppingTrolley) trolley;

   }

   /* load in information about this product given an id.  

      perhaps this id represents a poem troid?

   */

   protected void load(Integer id) {

     JammyjoesDatabase db = (JammyjoesDatabase) melati.getDatabase();

     product = db.getProductTable().getProductObject(id);

     description = product.getName();

     price = product.getRetailpriceincvat().doubleValue();

   }

   protected void save(JammyjoesDatabase db, ShopOrder order) {

     ShopOrderItem item = (ShopOrderItem) db.getShopOrderItemTable().newPersistent();

     item.setUser(order.getUser());

     item.setOrder(order);

     item.setProduct(product);

     item.setQuantity(getQuantity());

     item.setAmount(jammyjoesShoppingTrolley.convertFromUK(price * quantity.intValue()));

     item.setAmountUK(price * quantity.intValue());

     db.getShopOrderItemTable().create(item);

   }

   /* work out the cost of delivery

   */

   public double getDeliveryValue() {

     return 0;

   }

   public String getWeightDisplay() {

     double weight = getMass();

     if (weight < 1000)

       return weight + "g";

     return weight / 1000 + "Kg";

   }

   public double getWeight() {

     return getMass() * getQuantity().intValue();

   }

   public double getMass() {

     double weight = 0;

     if (product.getWeight() != null)

       weight = product.getWeight().doubleValue();

     return weight;

   }

   public Product getProduct() {

     return product;

   }

   public Integer getStocklevel() {

     Integer level = getProduct().getStocklevel();

     if (level == null) {

       return new Integer(0);

     } else {

       return getProduct().getStocklevel();

     }

   }

   public boolean enoughStock() {

     if (quantity.intValue() > getStocklevel().intValue())

       return false;

     return true;

   }

 }