package org.apache.maven.scm.provider.git.gitexe.command.add;
   
   /*
    * 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.commons.io.FilenameUtils;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.command.add.AbstractAddCommand;
  import org.apache.maven.scm.command.add.AddScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.git.command.GitCommand;
  import org.apache.maven.scm.provider.git.gitexe.command.GitCommandLineUtils;
  import org.apache.maven.scm.provider.git.gitexe.command.status.GitStatusCommand;
  import org.apache.maven.scm.provider.git.gitexe.command.status.GitStatusConsumer;
  import org.apache.maven.scm.provider.git.repository.GitScmProviderRepository;
  import org.codehaus.plexus.util.Os;
  import org.codehaus.plexus.util.cli.CommandLineUtils;
  import org.codehaus.plexus.util.cli.Commandline;
  
  import java.io.File;
  import java.net.URI;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * @author <a href="mailto:struberg@yahoo.de">Mark Struberg</a>
   */
  public class GitAddCommand
      extends AbstractAddCommand
      implements GitCommand
  {
      /**
       * {@inheritDoc}
       */
      protected ScmResult executeAddCommand( ScmProviderRepository repo, ScmFileSet fileSet, String message,
                                             boolean binary )
          throws ScmException
      {
          GitScmProviderRepository repository = (GitScmProviderRepository) repo;
  
          if ( fileSet.getFileList().isEmpty() )
          {
              throw new ScmException( "You must provide at least one file/directory to add" );
          }
  
          AddScmResult result = executeAddFileSet( fileSet );
  
          if ( result != null )
          {
              return result;
          }
          
          // SCM-709: statusCommand uses repositoryRoot instead of workingDirectory, adjust it with relativeRepositoryPath
          Commandline clRevparse = GitStatusCommand.createRevparseShowToplevelCommand( fileSet );
          
          CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer();
          CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
  
          URI relativeRepositoryPath = null;
          
          int exitCode;
  
          exitCode = GitCommandLineUtils.execute( clRevparse, stdout, stderr, getLogger() );
          if ( exitCode != 0 )
          {
              // git-status returns non-zero if nothing to do
              if ( getLogger().isInfoEnabled() )
              {
                  getLogger().info( "Could not resolve toplevel" );
              }
          }
          else
          {
              relativeRepositoryPath = GitStatusConsumer.resolveURI( stdout.getOutput().trim() , fileSet.getBasedir().toURI() ); 
          }
  
          // git-add doesn't show single files, but only summary :/
          // so we must run git-status and consume the output
          // borrow a few things from the git-status command
         Commandline clStatus = GitStatusCommand.createCommandLine( repository, fileSet );
 
         GitStatusConsumer statusConsumer = new GitStatusConsumer( getLogger(), fileSet.getBasedir(), relativeRepositoryPath );
         stderr = new CommandLineUtils.StringStreamConsumer();
         exitCode = GitCommandLineUtils.execute( clStatus, statusConsumer, stderr, getLogger() );
         if ( exitCode != 0 )
         {
             // git-status returns non-zero if nothing to do
             if ( getLogger().isInfoEnabled() )
             {
                 getLogger().info( "nothing added to commit but untracked files present (use \"git add\" to track)" );
             }
         }
 
         List<ScmFile> changedFiles = new ArrayList<ScmFile>();
 
         // rewrite all detected files to now have status 'checked_in'
         for ( ScmFile scmfile : statusConsumer.getChangedFiles() )
         {
             // if a specific fileSet is given, we have to check if the file is really tracked
             for ( File f : fileSet.getFileList() )
             {
                 if ( FilenameUtils.separatorsToUnix( f.getPath() ).equals( scmfile.getPath() ) )
                 {
                     changedFiles.add( scmfile );
                 }
             }
         }
 
         Commandline cl = createCommandLine( fileSet.getBasedir(), fileSet.getFileList() );
         return new AddScmResult( cl.toString(), changedFiles );
     }
 
     public static Commandline createCommandLine( File workingDirectory, List<File> files )
         throws ScmException
     {
         Commandline cl = GitCommandLineUtils.getBaseGitCommandLine( workingDirectory, "add" );
 
         // use this separator to make clear that the following parameters are files and not revision info.
         cl.createArg().setValue( "--" );
 
         GitCommandLineUtils.addTarget( cl, files );
 
         return cl;
     }
 
     private AddScmResult executeAddFileSet( ScmFileSet fileSet )
         throws ScmException
     {
         File workingDirectory = fileSet.getBasedir();
         List<File> files = fileSet.getFileList();
 
         // command line can be too long for windows so add files individually (see SCM-697)
         if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
         {
             for ( File file : files )
             {
                 AddScmResult result = executeAddFiles( workingDirectory, Collections.singletonList( file ) );
 
                 if ( result != null )
                 {
                     return result;
                 }
             }
         }
         else
         {
             AddScmResult result = executeAddFiles( workingDirectory, files );
 
             if ( result != null )
             {
                 return result;
             }
         }
 
         return null;
     }
 
     private AddScmResult executeAddFiles( File workingDirectory, List<File> files )
         throws ScmException
     {
         Commandline cl = createCommandLine( workingDirectory, files );
 
         CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
         CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer();
 
         int exitCode = GitCommandLineUtils.execute( cl, stdout, stderr, getLogger() );
 
         if ( exitCode != 0 )
         {
             return new AddScmResult( cl.toString(), "The git-add command failed.", stderr.getOutput(), false );
         }
 
         return null;
     }
 }