/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.maven.plugin.eclipse.writers.rad;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStreamWriter;
  import java.io.Writer;
  
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.eclipse.Constants;
  import org.apache.maven.plugin.eclipse.EclipseSourceDir;
  import org.apache.maven.plugin.eclipse.Messages;
  import org.apache.maven.plugin.eclipse.writers.AbstractEclipseWriter;
  import org.apache.maven.plugin.eclipse.writers.wtp.AbstractWtpResourceWriter;
  import org.apache.maven.plugin.ide.JeeUtils;
  import org.codehaus.plexus.util.IOUtil;
  import org.codehaus.plexus.util.xml.PrettyPrintXMLWriter;
  import org.codehaus.plexus.util.xml.XMLWriter;
  
  /**
   * Creates the .j2ee file for RAD6 for now write hardcoded: EJB version 2.1 WAR version 2.4 EAR version 1.4 future
   * releases could make these varriable.
   * 
   * @author <a href="mailto:nir@cfc.at">Richard van Nieuwenhoven</a>
   */
  public class RadJ2EEWriter
      extends AbstractEclipseWriter
  {
  
      private static final String J2EE_FILENAME = ".j2ee";
  
      private static final String J2EE_J2EESETTINGS = "j2eesettings";
  
      private static final String J2EE_MODULEVERSION = "moduleversion";
  
      private static final String J2EE_VERSION = "version";
  
      /**
       * write the .j2ee file to the project root directory.
       * 
       * @see AbstractWtpResourceWriter#write(EclipseSourceDir[], ArtifactRepository, File)
       * @param sourceDirs all eclipse source directorys
       * @param localRepository the local reposetory
       * @param buildOutputDirectory build output directory (target)
       * @throws MojoExecutionException when writing the config files was not possible
       */
      public void write()
          throws MojoExecutionException
      {
          Writer w;
          String packaging = config.getPackaging();
  
          if ( Constants.PROJECT_PACKAGING_WAR.equalsIgnoreCase( packaging )
              || Constants.PROJECT_PACKAGING_EJB.equalsIgnoreCase( packaging )
              || Constants.PROJECT_PACKAGING_EAR.equalsIgnoreCase( packaging ) )
          {
              try
              {
                  w =
                      new OutputStreamWriter( new FileOutputStream( new File( config.getEclipseProjectDirectory(),
                                                                              J2EE_FILENAME ) ), "UTF-8" );
              }
              catch ( IOException ex )
              {
                  throw new MojoExecutionException( Messages.getString( "EclipsePlugin.erroropeningfile" ), ex ); //$NON-NLS-1$
              }
  
              XMLWriter writer = new PrettyPrintXMLWriter( w, "UTF-8", null );
              writeModuleTypeFacetCore( writer, packaging );
              IOUtil.close( w );
          }
      }
  
      /**
       * Writes out the facet info for a faceted-project based on the packaging.
       * 
       * @param writer where to write to
       * @param packaging packaging type
       */
      private void writeModuleTypeFacetCore( XMLWriter writer, String packaging )
     {
         writer.startElement( J2EE_J2EESETTINGS );
         writer.addAttribute( J2EE_VERSION, "600" );
         writer.startElement( J2EE_MODULEVERSION );
         if ( Constants.PROJECT_PACKAGING_WAR.equalsIgnoreCase( packaging ) )
         {
             // In format X.X
             String servletVersion;
             if ( config.getJeeVersion() != null )
             {
                 servletVersion = JeeUtils.getJeeDescriptorFromJeeVersion( config.getJeeVersion() ).getServletVersion();
             }
             else
             {
                 servletVersion = JeeUtils.resolveServletVersion( config.getProject() );
             }
             writer.writeText( "" + servletVersion.charAt( 0 ) + servletVersion.charAt( 2 ) );
         }
         else if ( Constants.PROJECT_PACKAGING_EJB.equalsIgnoreCase( packaging ) )
         {
             // In format X.X
             String ejbVersion;
             if ( config.getJeeVersion() != null )
             {
                 ejbVersion = JeeUtils.getJeeDescriptorFromJeeVersion( config.getJeeVersion() ).getEjbVersion();
             }
             else
             {
                 ejbVersion = JeeUtils.resolveEjbVersion( config.getProject() );
             }
             writer.writeText( "" + ejbVersion.charAt( 0 ) + ejbVersion.charAt( 2 ) );
         }
         else if ( Constants.PROJECT_PACKAGING_EAR.equalsIgnoreCase( packaging ) )
         {
             // In format X.X
             String jeeVersion;
             if ( config.getJeeVersion() != null )
             {
                 jeeVersion = JeeUtils.getJeeDescriptorFromJeeVersion( config.getJeeVersion() ).getJeeVersion();
             }
             else
             {
                 jeeVersion = JeeUtils.resolveJeeVersion( config.getProject() );
             }
             writer.writeText( "" + jeeVersion.charAt( 0 ) + jeeVersion.charAt( 2 ) );
         }
         writer.endElement();
         writer.endElement();
     }
 
 }