/*******************************************************************************
 * Copyright (c) 2007, 2008 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.equinox.internal.simpleconfigurator.utils;

import java.net.URL;
import org.eclipse.equinox.internal.simpleconfigurator.console.ConfiguratorCommandProvider;
import org.eclipse.osgi.framework.console.CommandProvider;
import org.eclipse.osgi.service.datalocation.Location;
import org.osgi.framework.*;
import org.osgi.util.tracker.ServiceTracker;

public class EquinoxUtils {

	public static URL getConfigAreaURL(BundleContext context) {
		Filter filter = null;
		try {
			filter = context.createFilter(Location.CONFIGURATION_FILTER);
		} catch (InvalidSyntaxException e) {
			// should not happen
		}
		ServiceTracker configLocationTracker = new ServiceTracker(context, filter, null);
		configLocationTracker.open();
		try {
			Location configLocation = (Location) configLocationTracker.getService();
			if (configLocation == null)
				return null;

			URL baseURL = configLocation.getURL();
			if (baseURL != null)
				return baseURL;

			return null;
		} finally {
			configLocationTracker.close();
		}
	}

	public static ServiceRegistration registerConsoleCommands(BundleContext context) {
		return context.registerService(CommandProvider.class.getName(), new ConfiguratorCommandProvider(context), null);
	}
}