/*******************************************************************************
 * Copyright (c) 2012 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.maps.eclipse;

import java.net.InetSocketAddress;
import java.net.Proxy;

import org.eclipse.core.net.proxy.IProxyData;
import org.eclipse.core.net.proxy.IProxyService;
import org.eclipse.core.runtime.Platform;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.simantics.maps.IProxyUtil;

/**
 * @author Tuukka Lehtonen
 */
public class EclipseProxyUtil implements IProxyUtil {

    /**
     * @return IProxyService of the platform or <code>null</code> if the
     *         service is not available.
     */
    public Proxy getProxyService(final String url) {
        Bundle b = Platform.getBundle("org.eclipse.core.net");
        if (b == null)
            return null;

        BundleContext bc = b.getBundleContext();
        ServiceReference<IProxyService> ref = bc.getServiceReference(IProxyService.class);
        if (ref == null)
            return null;

        IProxyService service = bc.getService(ref);
        if (service != null && service.isProxiesEnabled()) {
            IProxyData proxyData = service.getProxyData(IProxyData.HTTP_PROXY_TYPE);
            if (proxyData != null && proxyData.getHost() != null) {
                return new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyData.getHost(), proxyData.getPort()));
            }
        }
        return null;
    }

}