/*
    * 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 java.io.IOException;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.apache.maven.project.MavenProject;
  
  /**
   * Compile Scala and Java sources
   * 
   * @author <a href="mailto:gslowikowski@gmail.com">Grzegorz Slowikowski</a>
   * @since 1.0.0
   */
  @Mojo( name = "compile", defaultPhase = LifecyclePhase.COMPILE, requiresDependencyResolution = ResolutionScope.COMPILE )
  public class SBTCompileMojo
      extends AbstractSBTCompileMojo
  {
      /**
       * A list of inclusion filters for the compiler.
       * 
       * @since 1.0.0
       */
      @Parameter
      private Set<String> includes = new HashSet<String>();
  
      /**
       * A list of exclusion filters for the compiler.
       * 
       * @since 1.0.0
       */
      @Parameter
      private Set<String> excludes = new HashSet<String>();
  
      /**
       * Set this to 'true' to bypass compilation of main sources.
       * Its use is NOT RECOMMENDED, but quite convenient on occasion.
       */
      @Parameter ( property = "maven.main.skip" )
      private boolean skipMain;
  
      /**
       * The source directories containing the sources to be compiled.
       */
      @Parameter( defaultValue = "${project.compileSourceRoots}", readonly = true, required = true )
      private List<String> compileSourceRoots;
  
      /**
       * Project classpath.
       */
      @Parameter( defaultValue = "${project.compileClasspathElements}", readonly = true, required = true )
      private List<String> classpathElements;
  
      /**
       * The directory for compiled classes.
       */
      @Parameter( defaultValue = "${project.build.outputDirectory}", required = true, readonly = true )
      private File outputDirectory;
  
      /**
       * Project's main artifact.
       */
      @Parameter( defaultValue = "${project.artifact}", readonly = true, required = true )
      private Artifact projectArtifact;
  
      @Override
      protected void internalExecute()
          throws MojoExecutionException, MojoFailureException, IOException
      {
          if ( skipMain )
          {
             getLog().info( "Not compiling main sources" );
             return;
         }
 
         super.internalExecute();
 
         if ( outputDirectory.isDirectory() )
         {
             projectArtifact.setFile( outputDirectory );
         }
     }
 
     @Override
     protected List<String> getCompileSourceRoots()
     {
         return compileSourceRoots;
     }
 
     @Override
     protected Set<String> getSourceIncludes()
     {
         return includes;
     }
     
     @Override
     protected Set<String> getSourceExcludes()
     {
         return excludes;
     }
 
     @Override
     protected List<String> getClasspathElements()
     {
         return classpathElements;
     }
 
     @Override
     protected File getOutputDirectory()
     {
         return outputDirectory;
     }
 
     @Override
     protected File getAnalysisCacheFile()
     {
         return defaultAnalysisCacheFile( project );
     }
 
     @Override
     protected Map<File, File> getAnalysisCacheMap()
     {
         HashMap<File, File> map = new HashMap<File, File>();
         for ( MavenProject reactorProject : reactorProjects )
         {
             if ( reactorProject != project )
             {
                 File analysisCacheFile = defaultAnalysisCacheFile( reactorProject );
                 if ( analysisCacheFile.isFile() )
                 {
                     File reactorProjectArtifactFile = reactorProject.getArtifact().getFile();
                     if ( reactorProjectArtifactFile != null )
                     {
                         map.put( reactorProjectArtifactFile.getAbsoluteFile(), analysisCacheFile.getAbsoluteFile() );
                     }
                 }
             }
         }
         return map;
     }
 
 }