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 java.io.IOException;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.project.MavenProject;
  
  /**
   * Displays a list of the profiles which are currently active for this build.
   *
   * @since 2.0
   */
  @Mojo( name = "active-profiles", aggregator = true )
  public class ActiveProfilesMojo
      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;
  
      // ----------------------------------------------------------------------
      // Public methods
      // ----------------------------------------------------------------------
  
      /** {@inheritDoc} */
      public void execute()
          throws MojoExecutionException
      {
          StringBuilder message = new StringBuilder();
  
          for ( MavenProject project : projects )
          {
              getActiveProfileStatement( project, message );
  
              message.append( LS ).append( LS );
          }
  
          if ( output != null )
          {
              StringBuilder sb = new StringBuilder();
              sb.append( "Generated by Maven Help Plugin" ).append( LS );
              sb.append( "See: https://maven.apache.org/plugins/maven-help-plugin/" ).append( LS ).append( LS );
              sb.append( message.toString() );
  
              try
              {
                  writeFile( output, sb );
              }
              catch ( IOException e )
              {
                  throw new MojoExecutionException( "Cannot write active profiles to output: " + output, e );
              }
  
              getLog().info( "Active profile report written to: " + output );
          }
          else
          {
              getLog().info( message );
          }
      }
  
      // ----------------------------------------------------------------------
      // Private methods
      // ----------------------------------------------------------------------
  
      /**
       * Method to get the active profiles for the project
       *
       * @param project   the current project
       * @param message   the object where the information will be appended to
      */
     private void getActiveProfileStatement( MavenProject project, StringBuilder message )
     {
         Map<String, List<String>> activeProfileIds = project.getInjectedProfileIds();
 
         message.append( LS );
         message.append( "Active Profiles for Project '" ).append( project.getId() ).append( "':" );
         message.append( LS ).append( LS );
 
         if ( activeProfileIds.isEmpty() )
         {
             message.append( "There are no active profiles." );
         }
         else
         {
             message.append( "The following profiles are active:" ).append( LS );
 
             for ( Map.Entry<String, List<String>> entry : activeProfileIds.entrySet() )
             {
                 for ( String profileId : entry.getValue() )
                 {
                     message.append( LS ).append( " - " ).append( profileId );
                     message.append( " (source: " ).append( entry.getKey() ).append( ")" );
                 }
             }
         }
 
         message.append( LS );
     }
 
 }