/*******************************************************************************

 * Copyright (c) 2009 Symbian Foundation 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:

 * Symbian Foundation - initial contribution.

 * Contributors:

 * Description:

 * Overview:

 * Details:

 * Platforms/Drives/Compatibility:

 * Assumptions/Requirement/Pre-requisites:

 * Failures and causes:

 *******************************************************************************/

package org.symbian.tools.tmw.previewer.http;

import java.util.Dictionary;

import java.util.Hashtable;

import java.util.logging.Level;

import java.util.logging.Logger;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.Platform;

import org.eclipse.equinox.http.jetty.JettyConfigurator;

import org.osgi.framework.Bundle;

import org.osgi.framework.BundleException;

import org.osgi.framework.InvalidSyntaxException;

import org.osgi.framework.ServiceReference;

import org.osgi.service.http.HttpContext;

import org.osgi.service.http.HttpService;

import org.symbian.tools.tmw.previewer.PreviewerPlugin;

/**

 * Copy from the WS Explorer

 * 

 * @author Eugene Ostroukhov

 *

 */

public class WebappManager {

	public static final String WORKSPACE_RESOURCES_CONTEXT = "/preview";

	public static final String STATIC_RESOURCES_CONTEXT = "/wrtdebugger";

	public static final String WEB_CONTENT_ROOT = "/http-content";

	private static String host;

	private static int port = -1;

	private static final int AUTO_SELECT_JETTY_PORT = 0;

    @SuppressWarnings({ "rawtypes", "unchecked" })

    public static void start(String webappName) throws Exception {

		Dictionary d = new Hashtable();

		// set the base URL

		d.put("other.info", "org.symbian.wst.debugger"); //$NON-NLS-1$ //$NON-NLS-2$

		// suppress Jetty INFO/DEBUG messages to stderr

		Logger.getLogger("org.mortbay").setLevel(Level.WARNING); //$NON-NLS-1$	

		JettyConfigurator.startServer(webappName, d);

		checkBundle();

		Bundle bundle = PreviewerPlugin.getDefault().getBundle();

		HttpService service = (HttpService) bundle.getBundleContext().getService(getServiceReference());

		HttpContext httpContext = service.createDefaultHttpContext();

		service.registerServlet(WORKSPACE_RESOURCES_CONTEXT, new WorkspaceResourcesServlet(), new Hashtable(), httpContext);

	}

	/*

	 * Ensures that the bundle with the specified name and the highest available

	 * version is started and reads the port number

	 */

	private static void checkBundle() throws InvalidSyntaxException, BundleException {

		Bundle bundle = Platform.getBundle("org.eclipse.equinox.http.registry"); //$NON-NLS-1$if (bundle != null) {

		if (bundle.getState() == Bundle.RESOLVED) {

			bundle.start(Bundle.START_TRANSIENT);

		}

		if (port == -1) {

			ServiceReference reference = getServiceReference();

			Object assignedPort = reference.getProperty("http.port"); //$NON-NLS-1$

			port = Integer.parseInt((String)assignedPort);

		}

	}

	private static ServiceReference getServiceReference()

			throws InvalidSyntaxException {

		Bundle bundle = PreviewerPlugin.getDefault().getBundle();

		// Jetty selected a port number for us

		ServiceReference[] reference = bundle.getBundleContext().getServiceReferences("org.osgi.service.http.HttpService", "(other.info=org.symbian.wst.debugger)"); //$NON-NLS-1$ //$NON-NLS-2$

		return reference[0];

	}

	public static void stop(String webappName) throws CoreException {

		try {

			JettyConfigurator.stopServer(webappName);

		}

		catch (Exception e) {

			//HelpBasePlugin.logError("An error occured while stopping the help server", e); //$NON-NLS-1$

		}

	}

	public static int getPort() {

		return port;

	}

	/*

	 * Get the port number which will be passed to Jetty

	 */

	private static int getPortParameter() {

		if (port == -1) { 

			return AUTO_SELECT_JETTY_PORT;

		}

		return port;

	}

	public static String getHost() {

		if (host == null) {

			host = "127.0.0.1";

		}

		return host;

	}

	private WebappManager() {

	}

}