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 javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.File;
  import java.util.List;
  
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.scm.ScmBranchParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.command.branch.BranchScmResult;
  import org.apache.maven.scm.manager.NoSuchScmProviderException;
  import org.apache.maven.scm.provider.ScmProvider;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.apache.maven.scm.repository.ScmRepositoryException;
  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.scm.ReleaseScmRepositoryException;
  import org.apache.maven.shared.release.scm.ScmRepositoryConfigurator;
  import org.apache.maven.shared.release.util.ReleaseUtil;
  
  /**
   * Branch the SCM repository.
   *
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   */
  @Singleton
  @Named( "scm-branch" )
  public class ScmBranchPhase
          extends AbstractReleasePhase
  {
      /**
       * Tool that gets a configured SCM repository from release configuration.
       */
      private final ScmRepositoryConfigurator scmRepositoryConfigurator;
  
      @Inject
      public ScmBranchPhase( ScmRepositoryConfigurator scmRepositoryConfigurator )
      {
          this.scmRepositoryConfigurator = scmRepositoryConfigurator;
      }
  
      @Override
      public ReleaseResult execute( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                    List<MavenProject> reactorProjects )
              throws ReleaseExecutionException, ReleaseFailureException
      {
          ReleaseResult relResult = new ReleaseResult();
  
          validateConfiguration( releaseDescriptor );
  
          logInfo( relResult, "Branching release with the label " + releaseDescriptor.getScmReleaseLabel() + "..." );
  
          ReleaseDescriptor basedirAlignedReleaseDescriptor =
                  ReleaseUtil.createBasedirAlignedReleaseDescriptor( releaseDescriptor, reactorProjects );
  
          ScmRepository repository;
          ScmProvider provider;
          try
          {
              repository =
                      scmRepositoryConfigurator.getConfiguredRepository(
                              basedirAlignedReleaseDescriptor.getScmSourceUrl(),
                              releaseDescriptor,
                              releaseEnvironment.getSettings() );
  
              repository.getProviderRepository().setPushChanges( releaseDescriptor.isPushChanges() );
  
              repository.getProviderRepository().setWorkItem( releaseDescriptor.getWorkItem() );
  
              provider = scmRepositoryConfigurator.getRepositoryProvider( repository );
  
          }
         catch ( ScmRepositoryException e )
         {
             throw new ReleaseScmRepositoryException( e.getMessage(), e.getValidationMessages() );
         }
         catch ( NoSuchScmProviderException e )
         {
             throw new ReleaseExecutionException( "Unable to configure SCM repository: " + e.getMessage(), e );
         }
 
         BranchScmResult result;
         try
         {
             ScmFileSet fileSet = new ScmFileSet( new File( basedirAlignedReleaseDescriptor.getWorkingDirectory() ) );
             String branchName = releaseDescriptor.getScmReleaseLabel();
 
             ScmBranchParameters scmBranchParameters = new ScmBranchParameters();
             scmBranchParameters.setMessage( releaseDescriptor.getScmCommentPrefix() + "copy for branch " + branchName );
             scmBranchParameters.setRemoteBranching( releaseDescriptor.isRemoteTagging() );
             scmBranchParameters.setScmRevision( releaseDescriptor.getScmReleasedPomRevision() );
             scmBranchParameters.setPinExternals( releaseDescriptor.isPinExternals() );
 
             result = provider.branch( repository, fileSet, branchName, scmBranchParameters );
         }
         catch ( ScmException e )
         {
             throw new ReleaseExecutionException( "An error is occurred in the branch process: " + e.getMessage(), e );
         }
 
         if ( !result.isSuccess() )
         {
             throw new ReleaseScmCommandException( "Unable to branch SCM", result );
         }
 
         relResult.setResultCode( ReleaseResult.SUCCESS );
 
         return relResult;
     }
 
     @Override
     public ReleaseResult simulate( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                    List<MavenProject> reactorProjects )
             throws ReleaseExecutionException, ReleaseFailureException
     {
         ReleaseResult result = new ReleaseResult();
 
         validateConfiguration( releaseDescriptor );
         ReleaseDescriptor basedirAlignedReleaseDescriptor =
                 ReleaseUtil.createBasedirAlignedReleaseDescriptor( releaseDescriptor, reactorProjects );
 
         logInfo( result, "Full run would branch " + basedirAlignedReleaseDescriptor.getWorkingDirectory() );
         if ( releaseDescriptor.getScmBranchBase() != null )
         {
             logInfo( result, "  to SCM URL " + releaseDescriptor.getScmBranchBase() );
         }
         logInfo( result, "  with label '" + releaseDescriptor.getScmReleaseLabel() + "'" );
         if ( releaseDescriptor.isPinExternals() )
         {
             logInfo( result, "  and pinned externals" );
         }
 
         result.setResultCode( ReleaseResult.SUCCESS );
 
         return result;
     }
 
     private static void validateConfiguration( ReleaseDescriptor releaseDescriptor )
             throws ReleaseFailureException
     {
         if ( releaseDescriptor.getScmReleaseLabel() == null )
         {
             throw new ReleaseFailureException( "A release label is required for committing" );
         }
     }
 }