package org.apache.maven.plugins.help;
   
   /*
    * 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.model.Profile;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.settings.SettingsUtils;
  
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Displays a list of available profiles under the current project.
   * <br>
   * <b>Note</b>: it will list <b>all</b> profiles for a project. If a
   * profile comes up with a status <b>inactive</b> then there might be a need to
   * set profile activation switches/property.
   *
   * @author <a href="mailto:rahul.thakur.xdev@gmail.com">Rahul Thakur</a>
   * @version $Id$
   * @since 2.1
   */
  @Mojo( name = "all-profiles", requiresProject = false )
  public class AllProfilesMojo
      extends AbstractHelpMojo
  {
      // ----------------------------------------------------------------------
      // Mojo parameters
      // ----------------------------------------------------------------------
  
      /**
       * This is the list of projects currently slated to be built by Maven.
       */
      @Parameter( defaultValue = "${reactorProjects}", required = true, readonly = true )
      private List<MavenProject> projects;
  
      /**
       * The list of profiles defined in the current Maven settings.
       */
      @Parameter( defaultValue = "${settings.profiles}", readonly = true, required = true )
      private List<org.apache.maven.settings.Profile> settingsProfiles;
  
      // ----------------------------------------------------------------------
      // Public methods
      // ----------------------------------------------------------------------
  
      /** {@inheritDoc} */
      public void execute()
          throws MojoExecutionException, MojoFailureException
      {
          StringBuilder descriptionBuffer = new StringBuilder();
  
          for ( MavenProject project : projects )
          {
              descriptionBuffer.append( "Listing Profiles for Project: " ).append( project.getId() ).append( LS );
              
              Map<String, Profile> allProfilesByIds = new HashMap<String, Profile>();
              Map<String, Profile> activeProfilesByIds = new HashMap<String, Profile>();
              addSettingsProfiles( allProfilesByIds );
              addProjectPomProfiles( project, allProfilesByIds, activeProfilesByIds );
  
              // now display
              if ( allProfilesByIds.isEmpty() )
              {
                  getLog().warn( "No profiles detected!" );
              }
              else
              {
                  // active Profiles will be a subset of *all* profiles
                  allProfilesByIds.keySet().removeAll( activeProfilesByIds.keySet() );
  
                  writeProfilesDescription( descriptionBuffer, activeProfilesByIds, true );
                  writeProfilesDescription( descriptionBuffer, allProfilesByIds, false );
              }
          }
  
         if ( output != null )
         {
             try
             {
                 writeFile( output, descriptionBuffer );
             }
             catch ( IOException e )
             {
                 throw new MojoExecutionException( "Cannot write profiles description to output: " + output, e );
             }
 
             getLog().info( "Wrote descriptions to: " + output );
         }
         else
         {
             getLog().info( descriptionBuffer.toString() );
         }
     }
 
     // ----------------------------------------------------------------------
     // Private methods
     // ----------------------------------------------------------------------
 
     private void writeProfilesDescription( StringBuilder sb, Map<String, Profile> profilesByIds, boolean active )
     {
         for ( Profile p : profilesByIds.values() )
         {
             sb.append( "  Profile Id: " ).append( p.getId() );
             sb.append( " (Active: " + active + " , Source: " ).append( p.getSource() ).append( ")" );
             sb.append( LS );
         }
     }
 
     /**
      * Adds the profiles from <code>pom.xml</code> and all of its parents.
      *
      * @param project could be null
      * @param allProfiles Map to add the profiles to.
      * @param activeProfiles Map to add the active profiles to.
      */
     private void addProjectPomProfiles( MavenProject project, Map<String, Profile> allProfiles,
                                         Map<String, Profile> activeProfiles )
     {
         if ( project == null )
         {
             // shouldn't happen as this mojo requires a project
             getLog().debug( "No pom.xml found to read Profiles from." );
             return;
         }
 
         getLog().debug( "Attempting to read profiles from pom.xml..." );
 
         while ( project != null )
         {
             for ( Profile profile : project.getModel().getProfiles() )
             {
                 allProfiles.put( profile.getId(), profile );
             }
             if ( project.getActiveProfiles() != null )
             {
                 for ( Profile profile : project.getActiveProfiles() )
                 {
                     activeProfiles.put( profile.getId(), profile );
                 }
             }
             project = project.getParent();
         }
     }
 
     /**
      * Adds the profiles from <code>settings.xml</code>.
      *
      * @param allProfiles Map to add the profiles to.
      */
     private void addSettingsProfiles( Map<String, Profile> allProfiles )
     {
         getLog().debug( "Attempting to read profiles from settings.xml..." );
         for ( org.apache.maven.settings.Profile settingsProfile : settingsProfiles )
         {
             Profile profile = SettingsUtils.convertFromSettingsProfile( settingsProfile );
             allProfiles.put( profile.getId(), profile );
         }
     }
 }