package org.multibit.mbm.client.interfaces.rest.api.representations.hal.cart;
import com.google.common.base.Preconditions;
import com.theoryinpractise.halbuilder.DefaultRepresentationFactory;
import com.theoryinpractise.halbuilder.api.Representation;
import com.xeiam.xchange.currency.MoneyUtils;
import org.joda.money.BigMoney;
import org.multibit.mbm.client.domain.model.model.Cart;
import org.multibit.mbm.client.domain.model.model.CartItem;
import org.multibit.mbm.client.interfaces.rest.api.representations.hal.item.PublicCartItemRepresentation;
/**
* <p>Representation to provide the following to the anonymous public and Customers:</p>
* <ul>
* <li>Creates a {@link Representation} of a shopping cart</li>
* </ul>
*
* @since 0.0.1
*/
public class PublicCartRepresentation {
private final PublicCartItemRepresentation publicCartItemRepresentation = new PublicCartItemRepresentation();
public Representation get(Cart cart) {
Preconditions.checkNotNull(cart, "cart");
Preconditions.checkNotNull(cart.getId(), "id");
// Do not reveal the ID to non-admins
String basePath = "/cart";
// TODO Integrate with Preferences and CartItem
String currencySymbol = "Ƀ"; // or £ or €
String currencyCode = "BTC";
// Calculate the value of the cart items
// TODO Allow for currency conversion
BigMoney cartTotal = MoneyUtils.parseBitcoin("BTC 0.0000");
BigMoney taxTotal = MoneyUtils.parseBitcoin("BTC 0.0000");
for (CartItem cartItem : cart.getCartItems()) {
cartTotal = cartTotal.plus(cartItem.getPriceSubtotal());
taxTotal = taxTotal.plus(cartItem.getTaxSubtotal());
}
// Create top-level resource
Representation cartRepresentation= new DefaultRepresentationFactory()
.newRepresentation(basePath)
// Do not reveal the customer to non-admins
.withLink("customer", "/customer")
.withProperty("currency_symbol", currencySymbol)
.withProperty("currency_code", currencyCode)
.withProperty("price_total", cartTotal.getAmount().toPlainString())
.withProperty("tax_total", taxTotal.getAmount().toPlainString())
.withProperty("item_total", cart.getItemTotal())
.withProperty("quantity_total", cart.getQuantityTotal())
// End of build
;
// Create sub-resources based on items
for (CartItem cartItem : cart.getCartItems()) {
Representation publicCartItemRepresentation= new PublicCartItemRepresentation().get(cartItem);
cartRepresentation.withRepresentation("cartitems", publicCartItemRepresentation);
}
return cartRepresentation;
}
}