package org.apache.maven.plugins.jmod;
   
   /*
    * 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.
   */
  
  import java.io.File;
  import java.io.IOException;
  import java.io.PrintStream;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.codehaus.plexus.util.cli.Commandline;
  
  /**
   * This goal is to support the usage of <code>jmod describe</code>.
   * 
   * @author Karl Heinz Marbaise <a href="mailto:khmarbaise@apache.org">khmarbaise@apache.org</a>
   */
  @Mojo( name = "describe", requiresDependencyResolution = ResolutionScope.NONE, defaultPhase = LifecyclePhase.NONE )
  public class JModDescribeMojo
      extends AbstractJModMojo
  {
  
      @Parameter( defaultValue = "${project.build.directory}", required = true, readonly = true )
      private File outputDirectory;
  
      /**
       * The name of the jmod file which is used to be examined via <code>jmod describe jmodFile</code>
       */
      //@formatter:off
      @Parameter( 
          defaultValue = "${project.build.directory}/jmods/${project.artifactId}.jmod", 
          property = "jmodfile", 
          required = true 
      )
      //@formatter:on
      private File jmodFile;
  
      public void execute()
          throws MojoExecutionException, MojoFailureException
      {
  
          String jModExecutable;
          try
          {
              jModExecutable = getJModExecutable();
          }
          catch ( IOException e )
          {
              throw new MojoFailureException( "Unable to find jmod command: " + e.getMessage(), e );
          }
  
          getLog().info( "Toolchain in maven-jmod-plugin: jmod [ " + jModExecutable + " ]" );
  
          if ( !jmodFile.exists() || !jmodFile.isFile() )
          {
              throw new MojoFailureException( "Unable to find " + jmodFile.getAbsolutePath() );
          }
  
          Commandline cmd;
          try
          {
              cmd = createJModDescribeCommandLine( jmodFile );
          }
          catch ( IOException e )
          {
              throw new MojoExecutionException( e.getMessage() );
          }
          cmd.setExecutable( jModExecutable );
  
          getLog().info( "The following information is contained in the module file " + jmodFile.getAbsolutePath() );
          executeCommand( cmd, outputDirectory );
  
      }
  
      private Commandline createJModDescribeCommandLine( File resultingJModFile )
          throws IOException
      {
          File file = new File( outputDirectory, "jmodDescribeArgs" );
         if ( !getLog().isDebugEnabled() )
         {
             file.deleteOnExit();
         }
         file.getParentFile().mkdirs();
         file.createNewFile();
 
         PrintStream argsFile = new PrintStream( file );
 
         argsFile.println( "describe" );
 
         argsFile.println( resultingJModFile.getAbsolutePath() );
         argsFile.close();
 
         Commandline cmd = new Commandline();
         cmd.createArg().setValue( '@' + file.getAbsolutePath() );
 
         return cmd;
     }
 
 }