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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
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package com.sun.jersey.samples.generatewadl.resources;

import com.sun.jersey.api.NotFoundException;
import com.sun.jersey.samples.generatewadl.model.Item;
import com.sun.jersey.samples.generatewadl.util.Examples;
import com.sun.jersey.spi.resource.Singleton;

import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * This is the root resource for managing items.

 * Created on: Jul 20, 2008

 * 
 * @author Martin Grotzke
 * @version $Id$
 */
@Singleton
@Path("items")
public class ItemsResource {
    
    @Context UriInfo _uriInfo;
    private final AtomicInteger _sequence;
    private final Map _repository;
    
    public ItemsResource() {
        _sequence = new AtomicInteger();
        _repository = new HashMap();
    }

    @Path("{id}")
    public ItemResource getItem( @PathParam("id") final Integer id ) {
        final Item item = _repository.get( id );
        if ( item == null ) {
            throw new NotFoundException("Item with id " + id + " does not exist!");
        }
        
        return new ItemResource( item );
    }

    /**
     * Add a new item to the list of managed items. The item will get assigned an id,
     * the resource where the item is available will be returned in the location header.
     * 
     * @param item The item to create.
     * 
     * @example.tag This is some example doc that will be processed by the
     *              ExampleDocProcessor and the ExampleWadlGenerator. 
     * 
     * @request.representation.qname {http://www.example.com}item
     * @request.representation.mediaType application/xml
     * @request.representation.example {@link Examples#SAMPLE_ITEM}
     * 
     * @response.param {@name Location}
     *                  {@style header}
     *                  {@type {http://www.w3.org/2001/XMLSchema}anyURI}
     *                  {@doc The URI where the created item is accessable.}
     *
     * @return The response with the status code and the location header.
     * 
     */
    @POST
    @Consumes( { "application/xml" } )
    public Response createItem( Item item ) {
        final Integer id = _sequence.incrementAndGet();
        _repository.put( id, item );
        return Response.created( 
                _uriInfo.getAbsolutePathBuilder().clone().path( id.toString() ).build() )
                .build();
    }
    
}