/*
    * Copyright 2013 Grzegorz Slowikowski (gslowikowski at gmail dot com)
    *
    * Licensed 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.
   */
  
  package com.google.code.sbt;
  
  import java.io.File;
  
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.project.MavenProject;
  
  /**
   * Add default Scala source roots, if they exist and are not already added.
   * 
   * - adds src/main/scala to Maven project as compile source root
   * - adds src/test/scala to Maven project as test compile source root
   * 
   * @author <a href="mailto:gslowikowski@gmail.com">Grzegorz Slowikowski</a>
   * @since 1.0.0
   */
  @Mojo( name = "addScalaSources", defaultPhase = LifecyclePhase.INITIALIZE )
  public class SBTAddScalaSourcesMojo
      extends AbstractMojo
  {
  
      /**
       * <i>Maven Internal</i>: Project to interact with.
       */
      @Component
      protected MavenProject project;
  
      /**
       * Adds Scala sources.
       */
      public void execute()
      {
          if ( "pom".equals( project.getPackaging() ) )
          {
              return;
          }
  
          File baseDir = project.getBasedir();
  
          File mainScalaPath = new File( baseDir, "src/main/scala" );
          if ( mainScalaPath.isDirectory() )
          {
              String mainScalaPathStr = mainScalaPath.getAbsolutePath();
              if ( !project.getCompileSourceRoots().contains( mainScalaPathStr ) )
              {
                  project.addCompileSourceRoot( mainScalaPathStr );
                  getLog().debug( "Added source directory: " + mainScalaPathStr );
              }
          }
  
          File testScalaPath = new File( baseDir, "src/test/scala" );
          if ( testScalaPath.isDirectory() )
          {
              String testScalaPathStr = testScalaPath.getAbsolutePath();
              if ( !project.getCompileSourceRoots().contains( testScalaPathStr ) )
              {
                  project.addTestCompileSourceRoot( testScalaPathStr );
                  getLog().debug( "Added test source directory: " + testScalaPathStr );
              }
          }
      }
  
  }