package org.apache.maven.scm.provider.svn.svnexe.command.branch;
   
   /*
    * 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.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.scm.ScmBranch;
  import org.apache.maven.scm.ScmBranchParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.command.branch.AbstractBranchCommand;
  import org.apache.maven.scm.command.branch.BranchScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.svn.SvnCommandUtils;
  import org.apache.maven.scm.provider.svn.SvnTagBranchUtils;
  import org.apache.maven.scm.provider.svn.command.SvnCommand;
  import org.apache.maven.scm.provider.svn.repository.SvnScmProviderRepository;
  import org.apache.maven.scm.provider.svn.svnexe.command.SvnCommandLineUtils;
  import org.codehaus.plexus.util.FileUtils;
  import org.codehaus.plexus.util.StringUtils;
  import org.codehaus.plexus.util.cli.CommandLineException;
  import org.codehaus.plexus.util.cli.CommandLineUtils;
  import org.codehaus.plexus.util.cli.Commandline;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   * @author Olivier Lamy
   *
   * @todo since this is just a copy, use that instead.
   */
  public class SvnBranchCommand
      extends AbstractBranchCommand
      implements SvnCommand
  {
      
      public ScmResult executeBranchCommand( ScmProviderRepository repo, ScmFileSet fileSet, String branch, ScmBranchParameters scmBranchParameters )
      throws ScmException
      {
          if ( branch == null || StringUtils.isEmpty( branch.trim() ) )
          {
              throw new ScmException( "branch name must be specified" );
          }
  
          if ( !fileSet.getFileList().isEmpty() )
          {
              throw new ScmException( "This provider doesn't support branching subsets of a directory" );
          }
  
          SvnScmProviderRepository repository = (SvnScmProviderRepository) repo;
  
          File messageFile = FileUtils.createTempFile( "maven-scm-", ".commit", null );
  
          try
          {
              FileUtils.fileWrite( messageFile.getAbsolutePath(), scmBranchParameters.getMessage() );
          }
          catch ( IOException ex )
          {
              return new BranchScmResult( null, "Error while making a temporary file for the commit message: "
                  + ex.getMessage(), null, false );
          }
  
          Commandline cl = createCommandLine( repository, fileSet.getBasedir(), branch, messageFile, scmBranchParameters );
  
          CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer();
  
          CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
  
          if ( getLogger().isInfoEnabled() )
          {
              getLogger().info( "Executing: " + SvnCommandLineUtils.cryptPassword( cl ) );
              getLogger().info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );
          }
  
          int exitCode;
  
         try
         {
             exitCode = SvnCommandLineUtils.execute( cl, stdout, stderr, getLogger() );
         }
         catch ( CommandLineException ex )
         {
             throw new ScmException( "Error while executing command.", ex );
         }
         finally
         {
             try
             {
                 FileUtils.forceDelete( messageFile );
             }
             catch ( IOException ex )
             {
                 // ignore
             }
         }
 
         if ( exitCode != 0 )
         {
             return new BranchScmResult( cl.toString(), "The svn branch command failed.", stderr.getOutput(), false );
         }
 
         List<ScmFile> fileList = new ArrayList<ScmFile>();
 
         List<File> files = null;
 
         try
         {
             @SuppressWarnings( "unchecked" )
             List<File> listFiles = FileUtils.getFiles( fileSet.getBasedir(), "**", "**/.svn/**", false );
             files = listFiles;
         }
         catch ( IOException e )
         {
             throw new ScmException( "Error while executing command.", e );
         }
 
         for ( File f : files )
         {
             fileList.add( new ScmFile( f.getPath(), ScmFileStatus.TAGGED ) );
         }
 
         return new BranchScmResult( cl.toString(), fileList );
     }
     
     /** {@inheritDoc} */
     public ScmResult executeBranchCommand( ScmProviderRepository repo, ScmFileSet fileSet, String branch,
                                            String message )
         throws ScmException
     {
         ScmBranchParameters scmBranchParameters = new ScmBranchParameters( message );
         return executeBranchCommand( repo, fileSet, branch, scmBranchParameters );
     }
 
     // ----------------------------------------------------------------------
     //
     // ----------------------------------------------------------------------
 
     public static Commandline createCommandLine( SvnScmProviderRepository repository, File workingDirectory,
                                                  String branch, File messageFile )
     {
         ScmBranchParameters scmBranchParameters = new ScmBranchParameters();
         scmBranchParameters.setRemoteBranching( false );
         return createCommandLine( repository, workingDirectory, branch, messageFile, scmBranchParameters );
     }
     
     public static Commandline createCommandLine( SvnScmProviderRepository repository, File workingDirectory,
                                                  String branch, File messageFile, ScmBranchParameters scmBranchParameters )
     {
         Commandline cl = SvnCommandLineUtils.getBaseSvnCommandLine( workingDirectory, repository );
 
         cl.createArg().setValue( "copy" );
 
         cl.createArg().setValue( "--file" );
 
         cl.createArg().setValue( messageFile.getAbsolutePath() );
 
         if ( scmBranchParameters != null && scmBranchParameters.isRemoteBranching() )
         {
             if (StringUtils.isNotBlank( scmBranchParameters.getScmRevision() ) )
             {
                 cl.createArg().setValue( "--revision" );
                 cl.createArg().setValue( scmBranchParameters.getScmRevision() );
             }
             cl.createArg().setValue( repository.getUrl() );
         }
         else
         {
             cl.createArg().setValue( "." );
         }
         // Note: this currently assumes you have the branch base checked out too
         String branchUrl = SvnTagBranchUtils.resolveBranchUrl( repository, new ScmBranch( branch ) );
         cl.createArg().setValue( SvnCommandUtils.fixUrl( branchUrl, repository.getUser() ) );
 
         return cl;
     }    
 }