/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 scatours.shoppingcart;

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

import org.osoa.sca.annotations.ConversationID;
import org.osoa.sca.annotations.Destroy;
import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Scope;
import org.osoa.sca.annotations.Service;

import payment.Payment;
import scatours.common.TripItem;

/**
 * An implementation of the Trip service
 */
@Scope("CONVERSATION")
@Service(interfaces={ShoppingCart.class})
public class ShoppingCartImpl implements ShoppingCart{
    
    @Reference
    protected Payment payment;   

    @ConversationID
    protected String cartId;
    
    private List<TripItem> trips = new ArrayList<TripItem>();
     
    // Trip methods
    
    @Init
    public void initCart() {
        System.out.println("Cart init for id: " + cartId);
    }
    
    @Destroy
    public void destroyCart() {
        System.out.println("Cart destroy for id: " + cartId);
    }
    
    public void addTrip(TripItem trip) {
        trips.add(trip);
    }
    
    public void removeTrip(TripItem trip) {
        trips.remove(trip);
    }
    
    public TripItem[] getTrips(){
        return trips.toArray(new TripItem[trips.size()]);
    }
    
    public void checkout(String customerName){ 
        // get users credentials. Hard coded for now but should
        // come from the security context
        String customerId = customerName;
       
        // get the total for all the trips
        float amount = (float)0.0;
        
        for (TripItem trip : trips){
            if (trip.getType().equals(TripItem.TRIP)){
                amount += trip.getPrice();
            } else {
                for (TripItem tripItem : trip.getTripItems()){
                    amount += tripItem.getPrice();
                }
            }
        }
        
        // Take the payment from the customer
        payment.makePaymentMember(customerId, amount);
    }  
    
}