package org.apache.maven.archetype.mojos;
   
   /*
    * 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 org.apache.maven.archetype.ArchetypeManager;
  import org.apache.maven.archetype.common.ArchetypeArtifactManager;
  import org.apache.maven.archetype.exception.UnknownArchetype;
  import org.apache.maven.archetype.metadata.ArchetypeDescriptor;
  import org.apache.maven.archetype.metadata.RequiredProperty;
  import org.apache.maven.artifact.DependencyResolutionRequiredException;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.project.MavenProject;
  
  import java.io.File;
  import java.io.IOException;
  
  /**
   * Build a JAR from the current Archetype project.
   *
   * @author           rafale
   * @goal             jar
   * @phase            package
   * @requiresProject
   */
  public class JarMojo
      extends AbstractMojo
  {
      /**
       * Directory containing the classes.
       *
       * @parameter  expression="${project.build.outputDirectory}"
       * @required
       */
      private File archetypeDirectory;
  
      /**
       * Name of the generated JAR.
       *
       * @parameter  alias="jarName" expression="${project.build.finalName}"
       * @required
       */
      private String finalName;
  
      /**
       * Directory containing the generated JAR.
       *
       * @parameter  expression="${project.build.directory}"
       * @required
       */
      private File outputDirectory;
  
      /**
       * The Maven project.
       *
       * @parameter  expression="${project}"
       * @required
       * @readonly
       */
      private MavenProject project;
  
      /**
       * The archetype manager component.
       *
       * @component
       */
      private ArchetypeManager manager;
  
      /**
       * The archetype artifact manager component.
       *
       * @component
       */
      private ArchetypeArtifactManager archetypeArtifactManager;
  
      public void execute()
          throws MojoExecutionException, MojoFailureException
      {
          try
          {
              getLog().info( "Building archetype jar: " + new File( outputDirectory, finalName ) );
 
             File jarFile = manager.archiveArchetype( archetypeDirectory, outputDirectory, finalName );
 
             checkArchetypeFile( jarFile );
 
             project.getArtifact().setFile( jarFile );
         }
         catch ( DependencyResolutionRequiredException ex )
         {
             throw new MojoExecutionException( ex.getMessage(), ex );
         }
         catch ( IOException ex )
         {
             throw new MojoExecutionException( ex.getMessage(), ex );
         }
     }
 
     private void checkArchetypeFile( File jarFile )
         throws MojoExecutionException
     {
         try
         {
             if ( archetypeArtifactManager.isFileSetArchetype( jarFile ) )
             {
                 checkFileSetArchetypeFile( jarFile );
             }
             else if ( !archetypeArtifactManager.isOldArchetype( jarFile ) )
             {
                 getLog().warn( "Building an Old (1.x) Archetype: consider migrating it to current 2.x Archetype." );
             }
             else
             {
                 throw new MojoExecutionException( "The current project does not built an archetype" );
             }
         }
         catch ( UnknownArchetype ua )
         {
             throw new MojoExecutionException( ua.getMessage(), ua );
         }
     }
 
     private void checkFileSetArchetypeFile( File jarFile )
         throws UnknownArchetype
     {
         ArchetypeDescriptor archetypeDescriptor = archetypeArtifactManager.getFileSetArchetypeDescriptor( jarFile );
 
         for ( RequiredProperty rp : archetypeDescriptor.getRequiredProperties() )
         {
             if ( rp.getKey().contains( "." ) )
             {
                 getLog().warn( "Invalid required property name '" + rp.getKey()
                                    + "': dot character makes is unusable in Velocity template" );
             }
         }
     }
 }