/*

  * 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;

 import java.io.File;

 import java.io.IOException;

 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.Messages;

 import org.apache.maven.plugin.ide.IdeUtils;

 import org.apache.maven.plugin.ide.JeeUtils;

 import org.apache.maven.plugin.logging.Log;

 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 EclipseManifestWriter

     extends AbstractEclipseManifestWriter

 {

     private static final String GENERATED_RESOURCE_DIRNAME =

         "target" + File.separatorChar + "generated-resources" + File.separatorChar + "eclipse";

     private static final String WEBAPP_RESOURCE_DIR =

         "src" + File.separatorChar + "main" + File.separatorChar + "webapp";

     /**

      * Returns absolute path to the web content directory based on configuration of the war plugin or default one

      * otherwise.

      * 

      * @param project

      * @return absolute directory path as String

      * @throws MojoExecutionException

      */

     private static String getWebContentBaseDirectory( EclipseWriterConfig config )

         throws MojoExecutionException

     {

         // getting true location of web source dir from config

         File warSourceDirectory =

             new File( IdeUtils.getPluginSetting( config.getProject(), JeeUtils.ARTIFACT_MAVEN_WAR_PLUGIN,

                                                  "warSourceDirectory", WEBAPP_RESOURCE_DIR ) );

         // getting real and correct path to the web source dir

         String webContentDir =

             IdeUtils.toRelativeAndFixSeparator( config.getEclipseProjectDirectory(), warSourceDirectory, false );

         // getting the path to meta-inf base dir

         String result = config.getProject().getBasedir().getAbsolutePath() + File.separatorChar + webContentDir;

         return result;

     }

     /**

      * Search the project for the existing META-INF directory where the manifest should be located.

      * 

      * @return the absolute path to the META-INF directory

      * @throws MojoExecutionException

      */

     protected String getMetaInfBaseDirectory( MavenProject project )

         throws MojoExecutionException

     {

         String metaInfBaseDirectory = null;

         if ( this.config.getProject().getPackaging().equals( Constants.PROJECT_PACKAGING_WAR ) )

         {

             // getting the path to meta-inf base dir

             metaInfBaseDirectory = getWebContentBaseDirectory( this.config );

             this.log.debug( "Attempting to use: " + metaInfBaseDirectory + " for location of META-INF in war project." );

             File metaInfDirectoryFile =

                 new File( metaInfBaseDirectory + File.separatorChar + AbstractEclipseManifestWriter.META_INF_DIRECTORY );

             if ( !metaInfDirectoryFile.exists()

                 || ( metaInfDirectoryFile.exists() && !metaInfDirectoryFile.isDirectory() ) )

             {

                 metaInfBaseDirectory = null;

             }

         }

         for ( int index = this.config.getSourceDirs().length - 1; metaInfBaseDirectory == null && index >= 0; index-- )

         {

             File manifestFile =

                 new File( this.config.getEclipseProjectDirectory(), this.config.getSourceDirs()[index].getPath()

                     + File.separatorChar + AbstractEclipseManifestWriter.META_INF_DIRECTORY + File.separatorChar

                     + AbstractEclipseManifestWriter.MANIFEST_MF_FILENAME );

             this.log.debug( "Checking for existence of META-INF/MANIFEST.MF file: " + manifestFile );

             if ( manifestFile.exists() )

             {

                 metaInfBaseDirectory = manifestFile.getParentFile().getParent();

             }

         }

         return metaInfBaseDirectory;

     }

     /**

      * make room for a Manifest file. use a generated resource for JARS and for WARS use the manifest in the

      * webapp/META-INF directory.

      * 

      * @throws MojoExecutionException

      */

     public static void addManifestResource( Log log, EclipseWriterConfig config )

         throws MojoExecutionException

     {

         AbstractEclipseManifestWriter manifestWriter = new EclipseManifestWriter();

         manifestWriter.init( log, config );

         String packaging = config.getProject().getPackaging();

         String manifestDirectory = manifestWriter.getMetaInfBaseDirectory( config.getProject() );

         if ( !Constants.PROJECT_PACKAGING_EAR.equals( packaging )

             && !Constants.PROJECT_PACKAGING_WAR.equals( packaging ) && manifestDirectory == null )

         {

             String generatedResourceDir =

                 config.getProject().getBasedir().getAbsolutePath() + File.separatorChar

                     + EclipseManifestWriter.GENERATED_RESOURCE_DIRNAME;

             manifestDirectory = generatedResourceDir + File.separatorChar + "META-INF";

             try

             {

                 new File( manifestDirectory ).mkdirs();

                 File manifestFile = new File( manifestDirectory + File.separatorChar + "MANIFEST.MF" );

                 if ( manifestFile.exists() )

                 {

                     manifestFile.delete();

                 }

                 manifestFile.createNewFile();

             }

             catch ( IOException e )

             {

                 log.error( Messages.getString( "EclipsePlugin.cantwritetofile", new Object[] { manifestDirectory

                     + File.separatorChar + "META-INF" + File.separatorChar + "MANIFEST.MF" } ) );

             }

             log.debug( "Adding " + EclipseManifestWriter.GENERATED_RESOURCE_DIRNAME + " to eclipse sources " );

             EclipseSourceDir[] sourceDirs = config.getSourceDirs();

             EclipseSourceDir[] newSourceDirs = new EclipseSourceDir[sourceDirs.length + 1];

             System.arraycopy( sourceDirs, 0, newSourceDirs, 0, sourceDirs.length );

             newSourceDirs[sourceDirs.length] =

                 new EclipseSourceDir( EclipseManifestWriter.GENERATED_RESOURCE_DIRNAME, null, true, false, null, null,

                                       false );

             config.setSourceDirs( newSourceDirs );

         }

         if ( Constants.PROJECT_PACKAGING_WAR.equals( packaging ) )

         {

             new File( getWebContentBaseDirectory( config ) + File.separatorChar + "META-INF" ).mkdirs();

         }

         // special case must be done first because it can add stuff to the

         // classpath that will be

         // written by the superclass

         manifestWriter.write();

     }    

 }