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/**
 * Copyright (c) 2009 Red Hat, Inc.
 *
 * This software is licensed to you under the GNU General Public License,
 * version 2 (GPLv2). There is NO WARRANTY for this software, express or
 * implied, including the implied warranties of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
 * along with this software; if not, see
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * Red Hat trademarks are not licensed under GPLv2. No permission is
 * granted to use or replicate Red Hat trademarks that are incorporated
 * in this software or its documentation.
 */
package org.fedoraproject.candlepin.resource;

import org.fedoraproject.candlepin.model.BaseModel;
import org.fedoraproject.candlepin.model.Consumer;
import org.fedoraproject.candlepin.model.ConsumerInfo;
import org.fedoraproject.candlepin.model.ConsumerType;
import org.fedoraproject.candlepin.model.ObjectFactory;
import org.fedoraproject.candlepin.model.Product;

import org.apache.log4j.Logger;

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

import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
 * API Gateway for Consumers
 */
@Path("/consumer")
public class ConsumerResource extends BaseResource {

    private static Logger log = Logger.getLogger(ConsumerResource.class);
    
    /**
     * default ctor
     */
    public ConsumerResource() {
        super(Consumer.class);
    }
   
    /**
     * List available Consumers
     * @return list of available consumers.
     */
    @GET
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public List<Consumer> list() {
        List<Object> u = ObjectFactory.get().listObjectsByClass(getApiClass());
        List<Consumer> consumers = new ArrayList<Consumer>();
        for (Object o : u) {
            consumers.add((Consumer) o);
        }
        return consumers;
    }
   
    /**
     * Create a Consumer
     * @param ci Consumer metadata encapsulated in a ConsumerInfo.
     * @return newly created Consumer
     */
    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Consumer create(ConsumerInfo ci, ConsumerType type) {
//        System.out.println("metadata: " + ci.getMetadata());
//        System.out.println("ci: " + ci);
        //Owner owner = (Owner) ObjectFactory.get().lookupByUUID(Owner.class, owneruuid);
        Consumer c = new Consumer();
        c.setName(ci.getMetadataField("name"));
        c.setType(type);
        // TODO: Need owner specified here:
        //c.setOwner(owner);
        c.setInfo(ci);
        ObjectFactory.get().store(c);
        return c;
    }

    /**
     * Returns the ConsumerInfo for the given Consumer.
     * @return the ConsumerInfo for the given Consumer.
     */
    @GET @Path("/info")
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    // TODO: What consumer?
    public ConsumerInfo getInfo() {
        ConsumerInfo ci = new ConsumerInfo();
//        ci.setType(new ConsumerType("system"));
        ci.setConsumer(null);
//        Map<String,String> m = new HashMap<String,String>();
//        m.put("cpu", "i386");
//        m.put("hey", "biteme");
//        ci.setMetadata(m);
        ci.setMetadataField("cpu", "i386");
        ci.setMetadataField("hey", "foobar");
        return ci;
    }
    
    /**
     * removes the product whose id matches pid, from the consumer, cid.
     * @param cid Consumer ID to affect
     * @param pid Product ID to remove from Consumer.
     */
//    @DELETE @Path("{cid}/products/{pid}")
//    public void delete(@PathParam("cid") String cid,
//                       @PathParam("pid") String pid) {
//        System.out.println("cid " + cid + " pid = " + pid);
//        Consumer c = (Consumer) ObjectFactory.get().lookupByUUID(Consumer.class, cid);
//        if (!c.getConsumedProducts().remove(pid)) {
//            log.error("no product " + pid + " found.");
//        }
//    }
    
    @GET @Path("{cid}/products/{pid}")
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Product getProduct(@PathParam("cid") String cid,
                       @PathParam("pid") String pid) {
        return null;
    }
}