/*
    * 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.osgiplugin;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.util.Properties;
  import java.util.jar.JarFile;
  import java.util.jar.Manifest;
  
  import org.apache.maven.plugin.eclipse.InstallPluginsMojo;
  import org.codehaus.plexus.archiver.ArchiverException;
  import org.codehaus.plexus.archiver.jar.JarArchiver;
  
  /**
   * Represents an Eclipse plugin that it's exploded in a directory
   * 
   * @author <a href="mailto:carlos@apache.org">Carlos Sanchez</a>
   * @version $Id: ExplodedPlugin.java 728546 2008-12-21 22:56:51Z bentmann $
   */
  public class ExplodedPlugin
      extends AbstractEclipseOsgiPlugin
  {
  
      private File tempJarFile;
  
      public ExplodedPlugin( File folder )
      {
          super( folder );
      }
  
      private File getManifestFile()
      {
          return new File( getFile(), "META-INF/MANIFEST.MF" );
      }
  
      public Manifest getManifest()
          throws IOException
      {
          if ( !getManifestFile().exists() )
          {
              return null;
          }
  
          FileInputStream is = new FileInputStream( getManifestFile() );
          try
          {
              return new Manifest( is );
          }
          finally
          {
              is.close();
          }
      }
  
      public boolean hasManifest()
      {
          return getManifestFile().exists();
      }
  
      public File getJarFile()
          throws IOException
      {
          if ( tempJarFile == null )
          {
              try
              {
                  tempJarFile = File.createTempFile( "mvn-eclipse", null );
                  tempJarFile.deleteOnExit();
  
                  JarArchiver jarArchiver = new JarArchiver();
  
                  jarArchiver.setDestFile( tempJarFile );
                  jarArchiver.addDirectory( getFile() );
                  jarArchiver.setManifest( getManifestFile() );
                  jarArchiver.createArchive();
  
                  return tempJarFile;
              }
              catch ( ArchiverException e )
              {
                  // TODO only accepts the cause as parameter in JDK 1.6+
                 throw new IOException( e.getMessage() );
             }
         }
         return tempJarFile;
     }
 
     public JarFile getJar()
         throws IOException
     {
         return new JarFile( getJarFile(), false );
     }
 
     /**
      * set the pom property to install unpacked if it was unpacked
      */
     public Properties getPomProperties()
     {
         Properties properties = new Properties();
         properties.setProperty( InstallPluginsMojo.PROP_UNPACK_PLUGIN, Boolean.TRUE.toString() );
         return properties;
     }
 
 }