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.File;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.command.remove.RemoveScmResult;
  import org.apache.maven.scm.provider.ScmProvider;
  import org.apache.maven.scm.repository.ScmRepository;
  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.scm.ReleaseScmCommandException;
  import org.apache.maven.shared.release.util.ReleaseUtil;
  
  /**
   * Remove release POMs.
   *
   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
   * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
   * @plexus.component role="org.apache.maven.shared.release.phase.ReleasePhase" role-hint="remove-release-poms"
   */
  public class RemoveReleasePomsPhase
      extends AbstractReleasePomsPhase
  {
      public ReleaseResult execute( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                    List<MavenProject> reactorProjects )
          throws ReleaseFailureException, ReleaseExecutionException
      {
          return execute( releaseDescriptor, releaseEnvironment, reactorProjects, false );
      }
  
      public ReleaseResult simulate( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                     List<MavenProject> reactorProjects )
          throws ReleaseFailureException, ReleaseExecutionException
      {
          return execute( releaseDescriptor, releaseEnvironment, reactorProjects, true );
      }
  
      private ReleaseResult execute( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                     List<MavenProject> reactorProjects, boolean simulate )
          throws ReleaseFailureException, ReleaseExecutionException
      {
          ReleaseResult result = new ReleaseResult();
  
          if ( releaseDescriptor.isGenerateReleasePoms() )
          {
              removeReleasePoms( releaseDescriptor, releaseEnvironment, simulate, result, reactorProjects );
          }
          else
          {
              logInfo( result, "Not removing release POMs" );
          }
  
          result.setResultCode( ReleaseResult.SUCCESS );
  
          return result;
      }
  
      private void removeReleasePoms( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                      boolean simulate, ReleaseResult result, List<MavenProject> projects )
          throws ReleaseFailureException, ReleaseExecutionException
      {
          List<File> releasePoms = new ArrayList<File>();
  
          for ( MavenProject project : projects )
          {
              logInfo( result, "Removing release POM for '" + project.getName() + "'..." );
  
              releasePoms.add( ReleaseUtil.getReleasePom( project ) );
          }
  
          if ( releaseDescriptor.isSuppressCommitBeforeTagOrBranch() )
          {
              removeReleasePomsFromFilesystem( simulate, result, releasePoms );
         }
         else
         {
             removeReleasePomsFromScm( releaseDescriptor, releaseEnvironment, simulate, result, releasePoms );
         }
     }
 
     private void removeReleasePomsFromFilesystem( boolean simulate, ReleaseResult result, List<File> releasePoms )
     {
         if ( simulate )
         {
             logInfo( result, "Full run would be removing " + releasePoms );
         }
         else
         {
             for ( File releasePom : releasePoms )
             {
                 releasePom.delete();
             }
         }
     }
 
     private void removeReleasePomsFromScm( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                            boolean simulate, ReleaseResult result, List<File> releasePoms )
         throws ReleaseFailureException, ReleaseExecutionException
     {
         if ( simulate )
         {
             logInfo( result, "Full run would be removing " + releasePoms );
         }
         else
         {
             ScmRepository scmRepository = getScmRepository( releaseDescriptor, releaseEnvironment );
             ScmProvider scmProvider = getScmProvider( scmRepository );
 
             ScmFileSet scmFileSet = new ScmFileSet( new File( releaseDescriptor.getWorkingDirectory() ), releasePoms );
 
             try
             {
                 RemoveScmResult scmResult =
                     scmProvider.remove( scmRepository, scmFileSet, "Removing for next development iteration." );
 
                 if ( !scmResult.isSuccess() )
                 {
                     throw new ReleaseScmCommandException( "Cannot remove release POMs from SCM", scmResult );
                 }
             }
             catch ( ScmException exception )
             {
                 throw new ReleaseExecutionException( "Cannot remove release POMs from SCM: " + exception.getMessage(),
                                                      exception );
             }
         }
     }
 }