PurchaseFactory.java

/*
 * Copyright 2011-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package pl.com.bottega.ecommerce.sales.domain.purchase;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.inject.Inject;

import org.springframework.beans.factory.config.AutowireCapableBeanFactory;

import pl.com.bottega.ddd.annotations.domain.DomainFactory;
import pl.com.bottega.ecommerce.canonicalmodel.publishedlanguage.AggregateId;
import pl.com.bottega.ecommerce.sales.domain.client.Client;
import pl.com.bottega.ecommerce.sales.domain.offer.Offer;
import pl.com.bottega.ecommerce.sales.domain.offer.OfferItem;
import pl.com.bottega.ecommerce.sharedkernel.Money;
import pl.com.bottega.ecommerce.sharedkernel.exceptions.DomainOperationException;

@DomainFactory
public class PurchaseFactory {

	@Inject
	private AutowireCapableBeanFactory spring;
	
	/**
	 * 
	 * @param orderId correlation id - correlates purchases and reservations  
	 * @param client
	 * @param offer
	 * @return
	 */
	public Purchase create(AggregateId orderId, Client client, Offer offer){
		if (! canPurchse(client, offer.getAvailabeItems()))
			throw new DomainOperationException(client.getAggregateId(), "client can not purchase");
		
		ArrayList<PurchaseItem> items = new ArrayList<PurchaseItem>(offer.getAvailabeItems().size());
		Money purchaseTotlCost = Money.ZERO;
		
		for (OfferItem item : offer.getAvailabeItems()) {
			PurchaseItem purchaseItem = new PurchaseItem(item.getProductData(), item.getQuantity(), item.getTotalCost());
			items.add(purchaseItem);
			purchaseTotlCost = purchaseTotlCost.add(purchaseItem.getTotalCost());
		}
		
		Purchase purchase = new Purchase(orderId, client.generateSnapshot(),
				items, new Date(), false, purchaseTotlCost);
		
		spring.autowireBean(purchase);
		
		return purchase;
	}

	private boolean canPurchse(Client client, List<OfferItem> availabeItems) {
		return true;//TODO explore domain rules
	}
}