package de.intevation.flys.client.server;

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

import javax.xml.xpath.XPathConstants;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

import de.intevation.artifacts.common.ArtifactNamespaceContext;
import de.intevation.artifacts.common.utils.ClientProtocolUtils;
import de.intevation.artifacts.common.utils.XMLUtils;

import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
import de.intevation.artifacts.httpclient.http.HttpClient;
import de.intevation.artifacts.httpclient.http.HttpClientImpl;
import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;

import de.intevation.flys.client.shared.model.Artifact;
import de.intevation.flys.client.shared.model.Collection;
import de.intevation.flys.client.shared.model.CollectionItem;
import de.intevation.flys.client.shared.model.DefaultCollection;
import de.intevation.flys.client.shared.model.DefaultCollectionItem;
import de.intevation.flys.client.shared.model.DefaultOutputMode;
import de.intevation.flys.client.shared.model.OutputMode;
import de.intevation.flys.client.client.services.AddArtifactService;


/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class AddArtifactServiceImpl
extends      DescribeCollectionServiceImpl
implements   AddArtifactService
{
    public Collection add(Collection collection, Artifact artifact, String url) {
        System.out.println("AddArtifactServiceImpl.add");

        Document add = ClientProtocolUtils.newAddArtifactDocument(
            artifact.getUuid(), null);

        HttpClient client = new HttpClientImpl(url);

        try {
            Document response = (Document) client.doCollectionAction(
                add, collection.identifier(), new DocumentResponseHandler());

            Collection c = parseCollection(response);

            if (c == null) {
                throw new NullPointerException("No collection returned.");
            }

            return c;
        }
        catch (ConnectionException ce) {
            System.err.println(ce.getLocalizedMessage());
        }

        return null;
    }
}
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