/*
 * JBoss, Home of Professional Open Source
 * Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual
 * contributors by the @authors tag. See the copyright.txt in the
 * distribution for a full listing of individual contributors.
 *
 * 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 io.fabric8.quickstarts.rest;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.xml.bind.annotation.XmlRootElement;
import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * The Order class is not only a plain old java object, with a few properties and getters and setters, but it also defines
 * a sub-resource for the Order returned by CustomerService.
 * <p/>
 * By adding the @XmlRootElement annotation, we make it possible for JAXB to unmarshal this object into a XML document and
 * to marshal it back from the same XML document.
 * <p/>
 * The XML representation of an Order will look like this:
 * <Order>
 * <id>223</id>
 * <description>Order 223</description>
 * </Order>
 */
@XmlRootElement(name = "Order")
public class Order {

    private static final Logger LOG = LoggerFactory.getLogger(CustomerService.class);

    private long id;
    private String description;
    private Map<Long, Product> products = new HashMap<Long, Product>();

    public Order() {
        init();
    }

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String d) {
        this.description = d;
    }

    /**
     * This method is mapped to an HTTP GET of '/', relative to the URL that point to this Order resource itself.
     * <p/>
     * The method returns the Order object itself - for creating the HTTP response, this object is marshaled into XML using
     * JAXB.
     * <p/>
     * For example: if surfing to 'http://localhost:8181/cxf/crm/customerservice/orders/223' will show you the information of
     * order 223 in XML format (as defined in CustomerService's getOrder() method), you can access product 323 in that order by
     * accessing 'http://localhost:8181/cxf/crm/customerservice/orders/223/products/323'
     */
    @GET
    @Path("/")
    @Produces("application/xml")
    public Order getThisOrder() {
        return this;
    }

    /**
     * This method is mapped to an HTTP GET of 'products/{productId}', relative to the URL that point to this Order resource
     * itself.
     * The value for {productId} will be passed to this message as a parameter, using the @PathParam annotation.
     * <p/>
     * The method returns an Product object - for creating the HTTP response, this object is marshaled into XML using JAXB.
     * <p/>
     * For example: accessing 'http://localhost:8181/cxf/crm/customerservice/orders/223/products/323' will first trigger the
     * CustomerService's getOrder() method to return the Order instance for order 223 and afterwards, it will use the remaining
     * part of the URI ('products/323') to map to this method and return the product details for product 323 in this order.
     */
    @GET
    @Path("products/{productId}/")
    @Produces("application/xml")
    public Product getProduct(@PathParam("productId") int productId) {
        LOG.info("----invoking getProduct with id: " + productId);
        Product p = products.get(new Long(productId));
        return p;
    }

    final void init() {
        Product p = new Product();
        p.setId(323);
        p.setDescription("product 323");
        products.put(p.getId(), p);
    }
}
