package org.apache.maven.scm.provider.svn.svnexe.command.changelog;
   
   /*
    * 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 org.apache.maven.scm.ScmBranch;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmTag;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.changelog.AbstractChangeLogCommand;
  import org.apache.maven.scm.command.changelog.ChangeLogScmRequest;
  import org.apache.maven.scm.command.changelog.ChangeLogScmResult;
  import org.apache.maven.scm.command.changelog.ChangeLogSet;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  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.StringUtils;
  import org.codehaus.plexus.util.cli.CommandLineException;
  import org.codehaus.plexus.util.cli.CommandLineUtils;
  import org.codehaus.plexus.util.cli.Commandline;
  
  import java.io.File;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.TimeZone;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   * @author Olivier Lamy
   *
   */
  public class SvnChangeLogCommand
      extends AbstractChangeLogCommand
      implements SvnCommand
  {
      private static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss Z";
  
      /** {@inheritDoc} */
      @Deprecated
      protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                            ScmVersion startVersion, ScmVersion endVersion,
                                                            String datePattern )
          throws ScmException
      {
          return executeChangeLogCommand( repo, fileSet, null, null, null, datePattern, startVersion, endVersion, null );
      }
  
      /** {@inheritDoc} */
      @Deprecated
      protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                            Date startDate, Date endDate, ScmBranch branch,
                                                            String datePattern )
          throws ScmException
      {
          return executeChangeLogCommand( repo, fileSet, startDate, endDate, branch, datePattern, null, null, null );
      }
  
      @Override
      protected ChangeLogScmResult executeChangeLogCommand( ChangeLogScmRequest request )
          throws ScmException
      {
          final ScmVersion startVersion = request.getStartRevision();
          final ScmVersion endVersion = request.getEndRevision();
          final ScmFileSet fileSet = request.getScmFileSet();
          final String datePattern = request.getDatePattern();
          return executeChangeLogCommand( request.getScmRepository().getProviderRepository(), fileSet,
              request.getStartDate(), request.getEndDate(), request.getScmBranch(), datePattern, startVersion,
                  endVersion, request.getLimit() );
      }
  
      private ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                            Date startDate, Date endDate, ScmBranch branch,
                                                            String datePattern, ScmVersion startVersion,
                                                            ScmVersion endVersion, Integer limit )
          throws ScmException
      {
          Commandline cl = createCommandLine( (SvnScmProviderRepository) repo, fileSet.getBasedir(), branch, startDate,
                                              endDate, startVersion, endVersion, limit );
  
          SvnChangeLogConsumer consumer = new SvnChangeLogConsumer( getLogger(), datePattern );
 
         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, consumer, stderr, getLogger() );
         }
         catch ( CommandLineException ex )
         {
             throw new ScmException( "Error while executing svn command.", ex );
         }
 
         if ( exitCode != 0 )
         {
             return new ChangeLogScmResult( cl.toString(), "The svn command failed.", stderr.getOutput(), false );
         }
         ChangeLogSet changeLogSet = new ChangeLogSet( consumer.getModifications(), startDate, endDate );
         changeLogSet.setStartVersion( startVersion );
         changeLogSet.setEndVersion( endVersion );
 
         return new ChangeLogScmResult( cl.toString(), changeLogSet );
     }
 
     // ----------------------------------------------------------------------
     //
     // ----------------------------------------------------------------------
 
     public static Commandline createCommandLine( SvnScmProviderRepository repository, File workingDirectory,
                                                  ScmBranch branch, Date startDate, Date endDate,
                                                  ScmVersion startVersion, ScmVersion endVersion )
     {
         return createCommandLine(repository, workingDirectory, branch,
             startDate, endDate, startVersion, endVersion, null);
     }
 
     public static Commandline createCommandLine( SvnScmProviderRepository repository, File workingDirectory,
                                                  ScmBranch branch, Date startDate, Date endDate,
                                                  ScmVersion startVersion, ScmVersion endVersion, Integer limit )
     {
         SimpleDateFormat dateFormat = new SimpleDateFormat( DATE_FORMAT );
 
         dateFormat.setTimeZone( TimeZone.getTimeZone( "GMT" ) );
 
         Commandline cl = SvnCommandLineUtils.getBaseSvnCommandLine( workingDirectory, repository );
 
         cl.createArg().setValue( "log" );
 
         cl.createArg().setValue( "-v" );
 
         // TODO: May want to add some kind of support for --stop-on-copy and --limit NUM
 
         if ( limit != null && limit > 0 )
         {
             cl.createArg().setValue( "--limit" );
             cl.createArg().setValue( Integer.toString( limit ) );
         }
 
         if ( startDate != null )
         {
             cl.createArg().setValue( "-r" );
 
             if ( endDate != null )
             {
                 cl.createArg().setValue(
                     "{" + dateFormat.format( startDate ) + "}" + ":" + "{" + dateFormat.format( endDate ) + "}" );
             }
             else
             {
                 cl.createArg().setValue( "{" + dateFormat.format( startDate ) + "}:HEAD" );
             }
         }
 
         if ( startVersion != null )
         {
             cl.createArg().setValue( "-r" );
 
             if ( endVersion != null )
             {
                 if ( startVersion.getName().equals( endVersion.getName() ) )
                 {
                     cl.createArg().setValue( startVersion.getName() );
                 }
                 else
                 {
                     cl.createArg().setValue( startVersion.getName() + ":" + endVersion.getName() );
                 }
             }
             else
             {
                 cl.createArg().setValue( startVersion.getName() + ":HEAD" );
             }
         }
 
         if ( branch != null && StringUtils.isNotEmpty( branch.getName() ) )
         {
             // By specifying a branch and this repository url below, subversion should show
             // the changelog of that branch, but limit it to paths that also occur in this repository.
             if ( branch instanceof ScmTag )
             {
                 cl.createArg().setValue( SvnTagBranchUtils.resolveTagUrl( repository, (ScmTag) branch ) );
             }
             else
             {
                 cl.createArg().setValue( SvnTagBranchUtils.resolveBranchUrl( repository, branch ) );
             }
         }
 
         if ( endVersion == null || !StringUtils.equals( "BASE", endVersion.getName() ) )
         {
             cl.createArg().setValue( repository.getUrl() );
         }
 
         return cl;
     }
 }