/*
 *   __               .__       .__  ._____.           
 * _/  |_  _______  __|__| ____ |  | |__\_ |__   ______
 * \   __\/  _ \  \/  /  |/ ___\|  | |  || __ \ /  ___/
 *  |  | (  <_> >    <|  \  \___|  |_|  || \_\ \\___ \ 
 *  |__|  \____/__/\_ \__|\___  >____/__||___  /____  >
 *                   \/       \/             \/     \/ 
 *
 * 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.Iterator;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author tux
 */
@XmlRootElement(name = "rss")
public class RSSFeed implements Iterable<RSSItem> {

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

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

    /**
     *
     */
    @XmlAttribute(name = "version")
    public float version;

    /**
     *
     */
    public RSSChannel channel;

    /**
     *
     * @return
     */
    public Iterator<RSSItem> iterator() {
        return channel.items.iterator();
    }
}