/*
 *   __               .__       .__  ._____.           
 * _/  |_  _______  __|__| ____ |  | |__\_ |__   ______
 * \   __\/  _ \  \/  /  |/ ___\|  | |  || __ \ /  ___/
 *  |  | (  <_> >    <|  \  \___|  |_|  || \_\ \\___ \ 
 *  |__|  \____/__/\_ \__|\___  >____/__||___  /____  >
 *                   \/       \/             \/     \/ 
 *
 * Copyright (c) 2006-2011 Karsten Schmidt
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * http://creativecommons.org/licenses/LGPL/2.1/
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

package toxi.data.feeds;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import javax.xml.datatype.XMLGregorianCalendar;

import toxi.data.feeds.util.Iso8601DateAdapter;

/**
 *
 * @author tux
 */
@XmlRootElement(name = "feed", namespace = AtomFeed.NS)
public class AtomFeed implements Iterable<AtomEntry> {

    /**
     *
     */
    public static final String NS = "http://www.w3.org/2005/Atom";

    /**
     *
     * @param stream
     * @return
     */
    public static AtomFeed newFromStream(InputStream stream) {
        AtomFeed feed = null;
        try {
            JAXBContext context = JAXBContext.newInstance(AtomFeed.class);
            feed = (AtomFeed) context.createUnmarshaller().unmarshal(stream);
        } catch (JAXBException e) {
            e.printStackTrace();
        }
        return feed;
    }

    /**
     *
     * @param url
     * @return
     */
    public static AtomFeed newFromURL(String url) {
        AtomFeed feed = null;
        try {
            feed = newFromStream(new URL(url).openStream());
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return feed;
    }

    @XmlElement(namespace = NS)
    public String id,

    /**
     *
     */

    /**
     *
     */
    title;

    /**
     *
     */
    @XmlElement(name = "updated", namespace = NS)
    @XmlJavaTypeAdapter(Iso8601DateAdapter.class)
    public XMLGregorianCalendar lastUpdated;

    /**
     *
     */
    @XmlElement(name = "link", namespace = NS)
    public ArrayList<AtomLink> links = new ArrayList<AtomLink>();

    /**
     *
     */
    @XmlElement(name = "entry", namespace = NS)
    public ArrayList<AtomEntry> entries = new ArrayList<AtomEntry>();

    /**
     *
     * @return
     */
    public Iterator<AtomEntry> iterator() {
        return entries.iterator();
    }
}