package org.apache.maven.scm.provider.git.jgit.command.untag;
   
   /*
    * 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.util.Collection;
  
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.ScmUntagParameters;
  import org.apache.maven.scm.command.untag.AbstractUntagCommand;
  import org.apache.maven.scm.command.untag.UntagScmResult;
  import org.apache.maven.scm.log.ScmLogger;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.git.command.GitCommand;
  import org.apache.maven.scm.provider.git.jgit.command.JGitUtils;
  import org.apache.maven.scm.provider.git.repository.GitScmProviderRepository;
  import org.codehaus.plexus.util.StringUtils;
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.lib.Constants;
  import org.eclipse.jgit.transport.PushResult;
  import org.eclipse.jgit.transport.RefSpec;
  import org.eclipse.jgit.transport.RemoteRefUpdate;
  
  /** {@inheritDoc} */
  public class JGitUntagCommand extends AbstractUntagCommand implements GitCommand
  {
  
      @Override
      protected ScmResult executeUntagCommand( ScmProviderRepository repository, ScmFileSet fileSet,
                                               ScmUntagParameters scmUntagParameters )
          throws ScmException
      {
          String tagName = scmUntagParameters.getTag();
          if ( tagName == null || StringUtils.isEmpty( tagName.trim() ) )
          {
              throw new ScmException( "tag name must be specified" );
          }
          String escapedTagName = tagName.trim().replace( ' ', '_' );
  
          Git git = null;
          try
          {
              git = JGitUtils.openRepo( fileSet.getBasedir() );
  
              // delete the tag
              if ( git.tagDelete().setTags( escapedTagName ).call().isEmpty() )
              {
                  return new UntagScmResult( "JGit tagDelete", "Failed to delete tag", "", false );
              }
  
              if ( repository.isPushChanges() )
              {
                  // From https://stackoverflow.com/q/11892766/696632
                  RefSpec refSpec = new RefSpec()
                      .setSource( null )
                      .setDestination( Constants.R_TAGS + escapedTagName );
  
                  getLogger().info( "push delete tag [" + escapedTagName + "] to remote..." );
                  ScmLogger logger = getLogger();
  
                  Iterable<PushResult> pushResultList
                          = JGitUtils.push( logger, git, (GitScmProviderRepository) repository, refSpec );
                  if ( logger.isInfoEnabled() )
                  {
                      for ( PushResult pushResult : pushResultList )
                      {
                          Collection<RemoteRefUpdate> ru = pushResult.getRemoteUpdates();
                          for ( RemoteRefUpdate remoteRefUpdate : ru )
                          {
                              logger.info( remoteRefUpdate.getStatus() + " - " + remoteRefUpdate );
                          }
                      }
                  }
              }
  
              return new UntagScmResult( "JGit tagDelete" );
          }
          catch ( Exception e )
          {
              throw new ScmException( "JGit tagDelete failure!", e );
          }
         finally
         {
             JGitUtils.closeRepo( git );
         }
     }
 }