/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.carbide.cpp.internal.news.reader.feed;

import java.io.IOException;

import java.net.URISyntaxException;

import java.net.URL;

import java.net.URLConnection;

import org.eclipse.core.net.proxy.IProxyData;

import com.nokia.carbide.cpp.internal.news.reader.CarbideNewsReaderPlugin;

import com.nokia.cpp.internal.api.utils.core.ProxyUtils;

import com.sun.syndication.feed.synd.SyndFeed;

import com.sun.syndication.fetcher.FetcherException;

import com.sun.syndication.fetcher.impl.FeedFetcherCache;

import com.sun.syndication.fetcher.impl.HttpURLFeedFetcher;

import com.sun.syndication.fetcher.impl.SyndFeedInfo;

import com.sun.syndication.io.FeedException;

/**

 * A class to retrieve feed via HTTP connection. 

 *

 */

public class CarbideFeedFetcher extends HttpURLFeedFetcher {

	/**

	 * Constructor to enable CarbideFeedFetcher without caching feeds.

	 */

	public CarbideFeedFetcher() {

		super();

	}

	/*

	 * (non-Javadoc)

	 * @see com.sun.syndication.fetcher.impl.HttpURLFeedFetcher#retrieveFeed(java.net.URL)

	 */

	public SyndFeed retrieveFeed(URL feedUrl) throws IllegalArgumentException, IOException, FeedException, FetcherException {

		try {

			IProxyData data = ProxyUtils.getProxyData(feedUrl.toURI());

			if (data != null) {

				System.setProperty("http.proxyHost", data.getHost());

				System.setProperty("http.proxyPort", Integer.toString(data.getPort()));

			}

		} catch (URISyntaxException e) {

			CarbideNewsReaderPlugin.log(e);

		}

		return super.retrieveFeed(feedUrl);

	}

	/**

	 * Constructor to enable CarbideFeedFetcher to cache feeds

	 * @param feedCache - an instance of the FeedFetcherCache interface

	 */

	public CarbideFeedFetcher(FeedFetcherCache feedInfoCache) {

		super(feedInfoCache);

	}

	/*

	 * (non-Javadoc)

	 * @see com.sun.syndication.fetcher.impl.HttpURLFeedFetcher#setRequestHeaders(java.net.URLConnection, com.sun.syndication.fetcher.impl.SyndFeedInfo)

	 */

	protected void setRequestHeaders(URLConnection connection, SyndFeedInfo syndFeedInfo) {

		super.setRequestHeaders(connection, syndFeedInfo);

		// specify acceptable content types

		connection.setRequestProperty("Accept", "*/xml");

	}

}