/*
 * 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 supplychain.customer;


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

import org.osgi.service.component.ComponentContext;


import supplychain.retailer.Retailer;
import supplychain.retailer.RetailerQuery;

/**
 * This class implements the Customer service component.
 */
public class OSGiCustomerWithQueryComponentImpl implements Customer {
    

    private Retailer retailer;
    private RetailerQuery retailerQuery;
    
    private static List<String> outstandingOrders = Collections.synchronizedList(new ArrayList<String>());
    
    public OSGiCustomerWithQueryComponentImpl() {
        System.out.println("Created OSGiCustomerWithQueryComponentImpl " + this);
    }
    
    protected void setRetailer(Retailer retailer) {
    	this.retailer = retailer;
    }
    
    protected void unsetRetailer(Retailer retailer) {
    	// this.retailer = null;
    }
    
    
    protected void setRetailerQuery(RetailerQuery retailerQuery) {
        this.retailerQuery = retailerQuery;
    }
    
    protected void unsetRetailerQuery(RetailerQuery retailerQuery) {
        // this.retailerQuery = null;
    }
    
    public void purchaseBooks() {
    	System.out.println("OSGiCustomerWithQueryComponentImpl.purchaseBooks");
        outstandingOrders.add("Order, submitted (amazon.com), fulfilled, shipped (RoyalMail)");
        
        if (retailerQuery.isAvailable("Order"))
            retailer.submitOrder("Order");
    }
    
    public void purchaseGames() {
        System.out.println("OSGiCustomerWithQueryComponentImpl.purchaseGames");
        outstandingOrders.add("Order, submitted (amazon.com), fulfilled, shipped (RoyalMail)");
        
        if (retailerQuery.isAvailable("Order"))
            retailer.submitOrder("Order");
    }
    
    public void purchaseGoods() {
        if (retailerQuery.isAvailable("Order"))
            retailer.submitOrder("Order");
    }
    
    public void notifyShipment(String order) {
        outstandingOrders.remove(order);
        System.out.print("Work thread " + Thread.currentThread() + " - ");
        System.out.println(order);
    }
    
    protected void activate(ComponentContext context){
        System.out.println("Activated OSGiCustomerWithQueryComponentImpl bundle ");
    }

    protected void deactivate(ComponentContext context){
        System.out.println("Deactivated OSGiCustomerWithQueryComponentImpl bundle ");
    }

    public boolean hasOutstandingOrders() {
        return outstandingOrders.size() != 0;
    }
}