package org.apache.maven.plugin.assembly.functions;
   
   /*
    * 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.artifact.Artifact;
  import org.apache.maven.artifact.ArtifactUtils;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.logging.Logger;
  
  import javax.annotation.Nullable;
  import java.util.List;
  import java.util.Set;
  
  /**
   * 
   */
  public class MavenProjects
  {
      public static void without( Iterable<MavenProject> source, String packagingType, MavenProjectConsumer consumer )
      {
          for ( MavenProject project : source )
          {
              if ( !packagingType.equals( project.getPackaging() ) )
              {
                  consumer.accept( project );
              }
          }
      }
  
      public static void select( Iterable<MavenProject> source, String packagingType, MavenProjectConsumer consumer )
      {
          for ( MavenProject project : source )
          {
              if ( packagingType.equals( project.getPackaging() ) )
              {
                  consumer.accept( project );
              }
          }
      }
  
      public static void select( Iterable<MavenProject> source, String packagingType, MavenProjectConsumer include,
                                 MavenProjectConsumer excluded )
      {
          for ( MavenProject project : source )
          {
              if ( packagingType.equals( project.getPackaging() ) )
              {
                  include.accept( project );
              }
              else
              {
                  excluded.accept( project );
              }
          }
      }
  
      @Nullable
      public static Artifact findArtifactByClassifier( MavenProject mavenProject, String classifier )
      {
          @SuppressWarnings( "unchecked" ) final List<Artifact> attachments = mavenProject.getAttachedArtifacts();
          if ( ( attachments != null ) && !attachments.isEmpty() )
          {
              for ( final Artifact attachment : attachments )
              {
                  if ( classifier.equals( attachment.getClassifier() ) )
                  {
                      return attachment;
                  }
              }
          }
          return null;
      }
  
  
      public static MavenProjectConsumer log( final Logger logger )
      {
          return new MavenProjectConsumer()
          {
              public void accept( MavenProject project )
              {
                  final String projectId = ArtifactUtils.versionlessKey( project.getGroupId(), project.getArtifactId() );
  
                 logger.debug( "Excluding POM-packaging module: " + projectId );
             }
         };
     }
 
     public static MavenProjectConsumer addTo( final Set<MavenProject> set )
     {
         return new MavenProjectConsumer()
         {
             public void accept( MavenProject project )
             {
                 set.add( project );
             }
         };
     }
 
 }