package org.apache.maven.plugin.eclipse.writers;
   
   /*
    * 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.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.util.Properties;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.eclipse.Messages;
  import org.apache.maven.plugin.ide.IdeDependency;
  import org.apache.maven.plugin.ide.IdeUtils;
  
  /**
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   * @author <a href="mailto:kenney@neonics.com">Kenney Westerhof</a>
   * @author <a href="mailto:fgiust@users.sourceforge.net">Fabrizio Giustina</a>
   * @version $Id$
   */
  public class EclipseAjdtWriter
      extends AbstractEclipseWriter
  {
  
      /**
       * 
       */
      private static final String LIBRARY = "LIBRARY";
  
      /**
       * 
       */
      private static final String BINARY = "BINARY";
  
      /**
       * 
       */
      private static final String CONTENT_KIND = ".contentKind";
  
      /**
       * 
       */
      private static final String ENTRY_KIND = ".entryKind";
  
      private static final String FILE_AJDT_PREFS = "org.eclipse.ajdt.ui.prefs"; //$NON-NLS-1$
  
      private static final String PROP_ECLIPSE_PREFERENCES_VERSION = "eclipse.preferences.version"; //$NON-NLS-1$
  
      private static final String DIR_DOT_SETTINGS = ".settings"; //$NON-NLS-1$
  
      private static final String AJDT_PROP_PREFIX = "org.eclipse.ajdt.ui."; //$NON-NLS-1$
  
      private static final String ASPECT_DEP_PROP = "aspectPath";
  
      private static final String WEAVE_DEP_PROP = "inPath";
  
      /**
       * @see org.apache.maven.plugin.eclipse.writers.EclipseWriter#write()
       */
      public void write()
          throws MojoExecutionException
      {
  
          // check if it's necessary to create project specific settings
          Properties ajdtSettings = new Properties();
  
          IdeDependency[] deps = config.getDeps();
          int ajdtDepCount = 0;
          int ajdtWeaveDepCount = 0;
          for ( IdeDependency dep : deps )
          {
              if ( dep.isAjdtDependency() )
              {
                  addDependency( ajdtSettings, dep, ASPECT_DEP_PROP, ++ajdtDepCount );
              }
  
              if ( dep.isAjdtWeaveDependency() )
              {
                  addDependency( ajdtSettings, dep, WEAVE_DEP_PROP, ++ajdtWeaveDepCount );
              }
         }
 
         // write the settings, if needed
         if ( !ajdtSettings.isEmpty() )
         {
             File settingsDir = new File( config.getEclipseProjectDirectory(), DIR_DOT_SETTINGS );
 
             settingsDir.mkdirs();
 
             ajdtSettings.put( PROP_ECLIPSE_PREFERENCES_VERSION, "1" ); //$NON-NLS-1$ 
 
             try
             {
                 File oldAjdtSettingsFile;
 
                 File ajdtSettingsFile = new File( settingsDir, FILE_AJDT_PREFS );
 
                 if ( ajdtSettingsFile.exists() )
                 {
                     oldAjdtSettingsFile = ajdtSettingsFile;
 
                     Properties oldsettings = new Properties();
                     oldsettings.load( new FileInputStream( oldAjdtSettingsFile ) );
 
                     Properties newsettings = (Properties) oldsettings.clone();
                     newsettings.putAll( ajdtSettings );
 
                     if ( !oldsettings.equals( newsettings ) )
                     {
                         newsettings.store( new FileOutputStream( ajdtSettingsFile ), null );
                     }
                 }
                 else
                 {
                     ajdtSettings.store( new FileOutputStream( ajdtSettingsFile ), null );
 
                     log.info( Messages.getString( "EclipseSettingsWriter.wrotesettings",
                                                   ajdtSettingsFile.getCanonicalPath() ) );
                 }
             }
             catch ( FileNotFoundException e )
             {
                 throw new MojoExecutionException( 
                                           Messages.getString( "EclipseSettingsWriter.cannotcreatesettings" ), e );
             }
             catch ( IOException e )
             {
                 throw new MojoExecutionException( 
                                           Messages.getString( "EclipseSettingsWriter.errorwritingsettings" ), e );
             }
         }
     }
 
     private void addDependency( Properties ajdtSettings, IdeDependency dep, String propName, int index )
         throws MojoExecutionException
     {
 
         String path;
 
         if ( dep.isReferencedProject() )
         {
             path = "/" + dep.getEclipseProjectName(); //$NON-NLS-1$
         }
         else
         {
             File artifactPath = dep.getFile();
 
             if ( artifactPath == null )
             {
                 log.error( Messages.getString( "EclipsePlugin.artifactpathisnull", dep.getId() ) );
                 return;
             }
 
             if ( dep.isSystemScoped() )
             {
                 path = IdeUtils.toRelativeAndFixSeparator( config.getEclipseProjectDirectory(), artifactPath, false );
 
                 if ( log.isDebugEnabled() )
                 {
                     log.debug( Messages.getString( "EclipsePlugin.artifactissystemscoped",
                                                    new Object[] { dep.getArtifactId(), path } ) );
                 }
             }
             else
             {
                 File localRepositoryFile = new File( config.getLocalRepository().getBasedir() );
 
                 String fullPath = artifactPath.getPath();
                 String relativePath =
                     IdeUtils.toRelativeAndFixSeparator( localRepositoryFile, new File( fullPath ), false );
 
                 if ( !new File( relativePath ).isAbsolute() )
                 {
                     path = EclipseClasspathWriter.M2_REPO + "/"
                         + relativePath;
                 }
                 else
                 {
                     path = relativePath;
                 }
             }
         }
 
         ajdtSettings.setProperty( AJDT_PROP_PREFIX + propName + CONTENT_KIND + index, BINARY );
         ajdtSettings.setProperty( AJDT_PROP_PREFIX + propName + ENTRY_KIND + index, LIBRARY );
         ajdtSettings.setProperty( AJDT_PROP_PREFIX + propName + index, path );
     }
 }