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/**
 * Copyright (c) 2008-2012 EBM WebSourcing, 2012-2016 Linagora
 * 
 * This program/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.
 * 
 * This program/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 program/library; If not, see http://www.gnu.org/licenses/
 * for the GNU Lesser General Public License version 2.1.
 */
package org.ow2.petals.se.jsr181;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.axis2.context.ConfigurationContext;
import org.ow2.petals.component.framework.api.configuration.SuConfigurationParameters;
import org.ow2.petals.component.framework.api.exception.PEtALSCDKException;
import org.ow2.petals.component.framework.jbidescriptor.generated.Provides;
import org.ow2.petals.component.framework.se.AbstractServiceEngine;
import org.ow2.petals.component.framework.se.ServiceEngineServiceUnitManager;
import org.ow2.petals.component.framework.su.ServiceUnitDataHandler;
import org.ow2.petals.se.jsr181.axis.Axis2Deployer;
import org.ow2.petals.se.jsr181.model.JaxConfiguration;
import org.ow2.petals.se.jsr181.model.JaxConfigurationHandler;

/**
 * The Service-Unit manager for the JSR-181 SE.
 *
 * @author Christophe HAMERLING - EBM WebSourcing
 * @author Vincent Zurczak - EBM WebSourcing
 */
public class Jsr181SuManager extends ServiceEngineServiceUnitManager {

	/**
	 * The name of the parameter defining the JAX-WS class name.
	 */
	private final static String CONFIG_CLASS = "class";

	/**
	 * A map associating service-unit names and configuration handlers.
	 */
	private final Map> suNameToJaxConfigHandler =
		new HashMap> ();



	/**
	 * Constructor.
	 * @param component the service engine instance
	 */
    public Jsr181SuManager(final AbstractServiceEngine component) {
		super( component );
	}

	@Override
    protected void doDeploy(final ServiceUnitDataHandler suDH) throws PEtALSCDKException {

		/*
		 * In case where we would like the generate the WSDL at deployment time,
		 * we should also generate the jbi.xml file. Both are too coupled.
		 *
		 * Here is the code to generate the WSDL from the JAX-WS class.
		 *
		 * // Get a JaxConfigurationHandler
		 * ByteArrayOutputStream bos = new ByteArrayOutputStream();
		 * jaxConfigurationHandler.getAxisService().printWSDL( bos );
		 * result = XMLUtil.createDocumentFromString( bos.toString());
		 */

        final List providesList = suDH.getDescriptor().getServices().getProvides();
        if (providesList.size() == 0) {
			throw new PEtALSCDKException( "This service-unit does not specify any service (no provides sections)." );
        }

        final List handlers = new ArrayList(providesList.size());
        this.suNameToJaxConfigHandler.put(suDH.getName(), handlers);

        final Axis2Deployer deployer = getComponent().getAxis2Deployer();

		for( Provides provides : providesList ) {

            final SuConfigurationParameters extensions = suDH.getConfigurationExtensions(provides);
			String className = extensions.get( CONFIG_CLASS );
			if( className != null )
				className = className.trim();

			if( className == null || className.length() == 0 )
				throw new PEtALSCDKException( "The class name cannot be null or empty." );

			try {
				// Create a JBI URL, not used but required...
                final URL serviceURL = new URL("http://localhost/services/" + provides.getServiceName().getLocalPart());
                final String edptName = provides.getEndpointName();

				// Register handlers that will be used at runtime
                final JaxConfiguration jaxConfiguration = new JaxConfiguration(serviceURL, suDH.getInstallRoot(),
                        className, edptName, suDH.getName());
                final JaxConfigurationHandler jaxConfigHandler = new JaxConfigurationHandler(jaxConfiguration);
				handlers.add( jaxConfigHandler );

                jaxConfigHandler.start(deployer, this.logger);

				// Register the handler in the component
                getComponent().registerJaxConfigurationHandler(edptName, jaxConfigHandler);

			} catch( MalformedURLException e ) {
				throw new PEtALSCDKException( e );
			}
		}
	}

	@Override
    protected void doUndeploy(final ServiceUnitDataHandler suDH) throws PEtALSCDKException {

        final List handlers = this.suNameToJaxConfigHandler.remove(suDH.getName());

		if( handlers != null ) {
            final ConfigurationContext axisContext = getComponent().getAxisContext();

            final PEtALSCDKException ex = new PEtALSCDKException("Error during undeploy");

            for (JaxConfigurationHandler handler : handlers) {
                getComponent().removeJaxConfigurationHandler(handler.getEndpointName());
                try {
                    handler.stop(axisContext, this.logger);
                } catch (final PEtALSCDKException e) {
                    ex.addSuppressed(e);
                }
            }

            ex.throwIfNeeded();
		}
	}

    @Override
    protected Jsr181Se getComponent() {
        return (Jsr181Se) super.getComponent();
    }
}