package org.apache.maven.shared.release.phase;
   
   /*
    * 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.IOException;
  import java.util.List;
  
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.shared.release.ReleaseExecutionException;
  import org.apache.maven.shared.release.ReleaseFailureException;
  import org.apache.maven.shared.release.ReleaseResult;
  import org.apache.maven.shared.release.config.ReleaseDescriptor;
  import org.apache.maven.shared.release.env.ReleaseEnvironment;
  import org.apache.maven.shared.release.util.ReleaseUtil;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * @author Edwin Punzalan
   * @plexus.component role="org.apache.maven.shared.release.phase.ReleasePhase" role-hint="create-backup-poms"
   */
  public class CreateBackupPomsPhase
      extends AbstractBackupPomsPhase
  {
      public ReleaseResult execute( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                    List<MavenProject> reactorProjects )
          throws ReleaseExecutionException, ReleaseFailureException
      {
          ReleaseResult result = new ReleaseResult();
  
          // remove previous backups, if any
          clean( reactorProjects );
  
          for ( MavenProject project : reactorProjects )
          {
              createPomBackup( project );
          }
  
          result.setResultCode( ReleaseResult.SUCCESS );
  
          return result;
      }
  
      public ReleaseResult clean( List<MavenProject> reactorProjects )
      {
          ReleaseResult result = new ReleaseResult();
  
          for ( MavenProject project : reactorProjects )
          {
              deletePomBackup( project );
          }
  
          result.setResultCode( ReleaseResult.SUCCESS );
  
          return result;
      }
  
      public ReleaseResult simulate( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                     List<MavenProject> reactorProjects )
          throws ReleaseExecutionException, ReleaseFailureException
      {
          return execute( releaseDescriptor, releaseEnvironment, reactorProjects );
      }
  
      private void createPomBackup( MavenProject project )
          throws ReleaseExecutionException
      {
          // delete any existing backup first
          deletePomBackup( project );
  
          try
          {
              FileUtils.copyFile( ReleaseUtil.getStandardPom( project ), getPomBackup( project ) );
          }
          catch ( IOException e )
          {
              throw new ReleaseExecutionException( "Error creating backup POM: " + e.getMessage(), e );
          }
      }
  }