/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005-2008, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This 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 software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */ 

package org.jboss.messaging.microcontainer;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.net.URL;
import java.util.List;
import java.util.ListIterator;
import java.util.Properties;
import java.util.concurrent.CopyOnWriteArrayList;

import org.jboss.kernel.plugins.bootstrap.basic.BasicBootstrap;
import org.jboss.kernel.plugins.deployment.xml.BeanXMLDeployer;
import org.jboss.kernel.spi.config.KernelConfig;
import org.jboss.kernel.spi.deployment.KernelDeployment;

/**
 * This is the method in which the JBM server can be deployed externall outside of jBoss. Alternatively a user can embed
 * by using the same code as in main
 * @author <a href="ataylor@redhat.com">Andy Taylor</a>
 */
public class JBMBootstrapServer extends BasicBootstrap
{
   /**
    * The deployer
    */
   protected BeanXMLDeployer deployer;
   /**
    * The deployments
    */
   protected List<KernelDeployment> deployments = new CopyOnWriteArrayList<KernelDeployment>();
   /**
    * The arguments
    */
   protected String[] args;
   
   private Properties properties;

   /**
    * Bootstrap the kernel from the command line
    *
    * @param args the command line arguments
    * @throws Exception for any error
    */
   public static void main(final String[] args) throws Exception
   {
      JBMBootstrapServer bootstrap = new JBMBootstrapServer(args);
      
      bootstrap.run();
   }

   public void run()
   {
      super.run();
      log.info("JBM Server Started");
   }

   /**
    * JBoss 1.0.0 final
    * Standalone
    * Create a new bootstrap
    *
    * @param args the arguments
    * @throws Exception for any error
    */
   public JBMBootstrapServer(String[] args) throws Exception
   {
      super();
      this.args = args;
   }

   public JBMBootstrapServer(final String[] args, KernelConfig kernelConfig) throws Exception
   {
      super(kernelConfig);
      //System.setProperty("java.naming.factory.initial", "org.jnp.interfaces.LocalOnlyContextFactory");
      //System.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
      this.args = args;
   }
   
   public void bootstrap() throws Throwable
   {
      super.bootstrap();
      deployer = new BeanXMLDeployer(getKernel());
      Runtime.getRuntime().addShutdownHook(new Shutdown());

      for (String arg : args)
      {
         deploy(arg);
      }

      deployer.validate();
   }
   
   /**
    * Undeploy a deployment
    *
    * @param deployment the deployment
    */
   public void undeploy(final KernelDeployment deployment) throws Throwable
   {
      log.debug("Undeploying " + deployment.getName());
      deployments.remove(deployment);
      try
      {
         deployer.undeploy(deployment);
         log.debug("Undeployed " + deployment.getName());
      }
      catch (Throwable t)
      {
         log.warn("Error during undeployment: " + deployment.getName(), t);
      }
   }

   public KernelDeployment deploy(final String arg) throws Throwable
   {
      ClassLoader cl = Thread.currentThread().getContextClassLoader();
      URL url = cl.getResource(arg);
      if (url == null)
      {
         url = cl.getResource("META-INF/" + arg);
      }
      //try the system classpath
      if(url == null)
      {
         url = getClass().getClassLoader().getResource(arg);
      }
      if (url == null)
      {
         throw new RuntimeException("Unable to find resource:" + arg);
      }
      return deploy(url);
   }
   
   /**
    * Deploys a XML on the container
    * 
    */
   public KernelDeployment deploy(final String name, final String xml) throws Throwable
   {
      ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
      PrintStream printOut = new PrintStream(byteOut);
      printOut.print(xml);
      printOut.flush();
      ByteArrayInputStream is = new ByteArrayInputStream(byteOut.toByteArray());
    
      KernelDeployment deployment = deployer.deploy(name, is);
      
      deployments.add(deployment);
      
      return deployment;
   }

   
   
   /**
    * Deploy a url
    *
    * @param url the deployment url
    * @throws Throwable for any error
    */
   protected KernelDeployment deploy(final URL url) throws Throwable
   {
      log.debug("Deploying " + url);
      KernelDeployment deployment = deployer.deploy(url);
      deployments.add(deployment);
      log.debug("Deployed " + url);
      return deployment;
   }

   public void shutDown()
   {
      log.info("Shutting down");
      ListIterator<KernelDeployment> iterator = deployments.listIterator(deployments.size());
      while (iterator.hasPrevious())
      {
         KernelDeployment deployment = (KernelDeployment) iterator.previous();
         try {undeploy(deployment);} catch (Throwable ignored){}
      }
   }

   protected Properties getConfigProperties()
   {
      return properties;
   }

   public void setProperties(Properties props)
   {
      properties = props;
   }
   
   
   protected class Shutdown extends Thread
   {
      public void run()
      {
         JBMBootstrapServer.this.shutDown();
      }
   }
}