/*
    * 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.
   */
  package org.apache.maven.plugin.eclipse.writers.rad;
  
  import java.io.File;
  
  import org.apache.maven.model.Resource;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.eclipse.Constants;
  import org.apache.maven.plugin.eclipse.EclipseSourceDir;
  import org.apache.maven.plugin.eclipse.writers.AbstractEclipseManifestWriter;
  import org.apache.maven.plugin.ide.IdeUtils;
  import org.apache.maven.plugin.ide.JeeUtils;
  import org.apache.maven.project.MavenProject;
  
  /**
   * Create or adapt the manifest files for the RAD6 runtime dependencys. attention these will not be used for the real
   * ear these are just to get the runtime enviorment using the maven dependencies. WARNING: The manifest resources added
   * here will not have the benefit of the dependencies of the project, since that's not provided in the setup() apis, one
   * of the locations from which this writer is used in the RadPlugin.
   * 
   * @author <a href="mailto:nir@cfc.at">Richard van Nieuwenhoven </a>
   */
  public class RadManifestWriter
      extends AbstractEclipseManifestWriter
  {
  
      private static final String DEFAULT_WEBAPP_RESOURCE_DIR =
          "src" + File.separatorChar + "main" + File.separatorChar + "webapp";
  
      /**
       * Search the project for the existing META-INF directory where the manifest should be located.
       * 
       * @return the apsolute path to the META-INF directory
       * @throws MojoExecutionException
       */
      protected String getMetaInfBaseDirectory( MavenProject project )
          throws MojoExecutionException
      {
          String metaInfBaseDirectory = null;
  
          if ( config.getProject().getPackaging().equals( Constants.PROJECT_PACKAGING_WAR ) )
          {
              // Generating web content settings based on war plug-in warSourceDirectory property
              File warSourceDirectory =
                  new File( IdeUtils.getPluginSetting( config.getProject(), JeeUtils.ARTIFACT_MAVEN_WAR_PLUGIN,
                                                       "warSourceDirectory", //$NON-NLS-1$
                                                       DEFAULT_WEBAPP_RESOURCE_DIR ) );
  
              String webContentDir =
                  IdeUtils.toRelativeAndFixSeparator( config.getEclipseProjectDirectory(), warSourceDirectory, false );
  
              metaInfBaseDirectory =
                  config.getProject().getBasedir().getAbsolutePath() + File.separatorChar + webContentDir;
  
              log.debug( "Attempting to use: " + metaInfBaseDirectory + " for location of META-INF in war project." );
  
              File metaInfDirectoryFile = new File( metaInfBaseDirectory + File.separatorChar + META_INF_DIRECTORY );
  
              if ( metaInfDirectoryFile.exists() && !metaInfDirectoryFile.isDirectory() )
              {
                  metaInfBaseDirectory = null;
              }
          }
  
          if ( metaInfBaseDirectory == null )
          {
              for (Object o : project.getResources()) {
                  metaInfBaseDirectory = ((Resource) o).getDirectory();
  
                  File metaInfDirectoryFile = new File(metaInfBaseDirectory + File.separatorChar + META_INF_DIRECTORY);
  
                  log.debug("Checking for existence of META-INF directory: " + metaInfDirectoryFile);
  
                  if (metaInfDirectoryFile.exists() && !metaInfDirectoryFile.isDirectory()) {
                      metaInfBaseDirectory = null;
                  }
              }
          }
  
          return metaInfBaseDirectory;
      }
  
     /**
      * {@inheritDoc}
      */
     public void write()
         throws MojoExecutionException
     {
         super.write();
         verifyManifestBasedirInSourceDirs( getMetaInfBaseDirectory( config.getProject() ) );
     }
 
     // NOTE: This could change the config!
     private void verifyManifestBasedirInSourceDirs( String metaInfBaseDirectory )
     {
         EclipseSourceDir[] sourceDirs = config.getSourceDirs();
 
         if ( sourceDirs != null )
         {
             boolean foundMetaInfBaseDirectory = false;
 
             for (EclipseSourceDir esd : sourceDirs) {
                 if (esd.getPath().equals(metaInfBaseDirectory)) {
                     foundMetaInfBaseDirectory = true;
                     break;
                 }
             }
 
             if ( !foundMetaInfBaseDirectory )
             {
                 EclipseSourceDir dir =
                     new EclipseSourceDir( metaInfBaseDirectory, null, true, false, null, null, false );
 
                 EclipseSourceDir[] newSourceDirs = new EclipseSourceDir[sourceDirs.length + 1];
                 newSourceDirs[sourceDirs.length] = dir;
 
                 System.arraycopy( sourceDirs, 0, newSourceDirs, 0, sourceDirs.length );
 
                 config.setSourceDirs( newSourceDirs );
             }
         }
     }
 }