//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  
  package org.eclipse.jetty.maven.plugin;
  
  import java.io.File;
  import java.util.Iterator;
  
  import org.eclipse.jetty.quickstart.QuickStartConfiguration;
  import org.eclipse.jetty.util.IO;
  import org.eclipse.jetty.util.log.Log;
  import org.eclipse.jetty.util.log.Logger;
  import org.eclipse.jetty.util.resource.Resource;
  import org.eclipse.jetty.util.resource.ResourceCollection;
  import org.eclipse.jetty.webapp.WebAppClassLoader;
  import org.eclipse.jetty.webapp.WebAppContext;
  
  /**
   * MavenQuickStartConfiguration
   *
   *
   */
  public class MavenQuickStartConfiguration extends QuickStartConfiguration
  {
      private static final Logger LOG = Log.getLogger(QuickStartConfiguration.class);
      
      private Resource _quickStartWebXml;
  
  
      public void setQuickStartWebXml (Resource r)
      {
          _quickStartWebXml = r;
      }
      
     
      
      @Override
      public Resource getQuickStartWebXml(WebAppContext context) throws Exception
      {
          return _quickStartWebXml;
      }
  
      @Override
      public void preConfigure(WebAppContext context) throws Exception
      {
          //check that webapp is suitable for quick start 
          if (context.getBaseResource() == null)
              throw new IllegalStateException ("No location for webapp");  
  
          
          //look for quickstart-web.xml in WEB-INF of webapp
          Resource quickStartWebXml = getQuickStartWebXml(context);
          LOG.debug("quickStartWebXml={}",quickStartWebXml);
          
          context.getMetaData().setWebXml(quickStartWebXml);
      }
  
  
      @Override
      public void configure(WebAppContext context) throws Exception
      {
          
         JettyWebAppContext jwac = (JettyWebAppContext)context;
          
          //put the classes dir and all dependencies into the classpath
          if (jwac.getClassPathFiles() != null)
          {
              if (LOG.isDebugEnabled()) LOG.debug("Setting up classpath ...");
              Iterator itor = jwac.getClassPathFiles().iterator();
              while (itor.hasNext())
                  ((WebAppClassLoader)context.getClassLoader()).addClassPath(((File)itor.next()).getCanonicalPath());
          }
          
          //Set up the quickstart environment for the context
          super.configure(context);
          
          // knock out environmental maven and plexus classes from webAppContext
          String[] existingServerClasses = context.getServerClasses();
          String[] newServerClasses = new String[2+(existingServerClasses==null?0:existingServerClasses.length)];
          newServerClasses[0] = "org.apache.maven.";
          newServerClasses[1] = "org.codehaus.plexus.";
          System.arraycopy( existingServerClasses, 0, newServerClasses, 2, existingServerClasses.length );
          if (LOG.isDebugEnabled())
         {
             LOG.debug("Server classes:");
             for (int i=0;i<newServerClasses.length;i++)
                 LOG.debug(newServerClasses[i]);
         }
         context.setServerClasses( newServerClasses ); 
     }
     
     @Override
     public void deconfigure(WebAppContext context) throws Exception
     {
         //if we're not persisting the temp dir, get rid of any overlays
         if (!context.isPersistTempDirectory())
         {
             Resource originalBases = (Resource)context.getAttribute("org.eclipse.jetty.resources.originalBases");
             String originalBaseStr = originalBases.toString();
 
             //Iterate over all of the resource bases and ignore any that were original bases, just
             //deleting the overlays
             Resource res = context.getBaseResource();
             if (res instanceof ResourceCollection)
             {
                 for (Resource r:((ResourceCollection)res).getResources())
                 {
                     if (originalBaseStr.contains(r.toString()))
                         continue;
                     IO.delete(r.getFile());
                 }
             }
         }
     }
     
 }