package org.apache.maven.scm.provider.perforce.command.blame;

 /*

  * 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.ScmException;

 import org.apache.maven.scm.ScmFileSet;

 import org.apache.maven.scm.command.blame.AbstractBlameCommand;

 import org.apache.maven.scm.command.blame.BlameLine;

 import org.apache.maven.scm.command.blame.BlameScmResult;

 import org.apache.maven.scm.provider.ScmProviderRepository;

 import org.apache.maven.scm.provider.perforce.PerforceScmProvider;

 import org.apache.maven.scm.provider.perforce.command.PerforceCommand;

 import org.apache.maven.scm.provider.perforce.repository.PerforceScmProviderRepository;

 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.util.List;

 /**

  * @author Evgeny Mandrikov

  * @author Olivier Lamy

  * @since 1.4

  */

 public class PerforceBlameCommand

     extends AbstractBlameCommand

     implements PerforceCommand

 {

     public BlameScmResult executeBlameCommand( ScmProviderRepository repo, ScmFileSet workingDirectory, String filename )

         throws ScmException

     {

         // Call annotate command

                 PerforceScmProviderRepository p4repo = (PerforceScmProviderRepository) repo;

                 String clientspec = PerforceScmProvider.getClientspecName( getLogger(), p4repo, workingDirectory.getBasedir() );

         Commandline cl = createCommandLine( (PerforceScmProviderRepository) repo, workingDirectory.getBasedir(),

                                             filename, clientspec);

         PerforceBlameConsumer blameConsumer = new PerforceBlameConsumer( getLogger() );

         CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();

         int exitCode;

         try

         {

             exitCode = CommandLineUtils.executeCommandLine( cl, blameConsumer, stderr );

         }

         catch ( CommandLineException ex )

         {

             throw new ScmException( "Error while executing command.", ex );

         }

         if ( exitCode != 0 )

         {

             return new BlameScmResult( cl.toString(), "The perforce command failed.", stderr.getOutput(), false );

         }

         // Call filelog command

         cl = createFilelogCommandLine( (PerforceScmProviderRepository) repo, workingDirectory.getBasedir(), filename, clientspec );

         PerforceFilelogConsumer filelogConsumer = new PerforceFilelogConsumer( getLogger() );

         try

         {

             exitCode = CommandLineUtils.executeCommandLine( cl, filelogConsumer, stderr );

         }

         catch ( CommandLineException ex )

         {

             throw new ScmException( "Error while executing command.", ex );

         }

         if ( exitCode != 0 )

         {

             return new BlameScmResult( cl.toString(), "The perforce command failed.", stderr.getOutput(), false );

         }

         // Combine results

         List<BlameLine> lines = blameConsumer.getLines();

         for ( int i = 0; i < lines.size(); i++ )

         {

             BlameLine line = lines.get( i );

             String revision = line.getRevision();

             line.setAuthor( filelogConsumer.getAuthor( revision ) );

             line.setDate( filelogConsumer.getDate( revision ) );

         }

         return new BlameScmResult( cl.toString(), lines );

     }

     public static Commandline createCommandLine( PerforceScmProviderRepository repo, File workingDirectory,

                                                  String filename, final String clientspec )

     {

         Commandline cl = PerforceScmProvider.createP4Command( repo, workingDirectory );

                 if(clientspec != null)

                 {

                         cl.createArg().setValue( "-c" );

                         cl.createArg().setValue( clientspec );

                 }                

         cl.createArg().setValue( "annotate" );

         cl.createArg().setValue( "-q" ); // quiet

         cl.createArg().setValue( filename );

         return cl;

     }

     public static Commandline createFilelogCommandLine( PerforceScmProviderRepository repo, File workingDirectory,

                                                         String filename, final String clientspec )

     {

         Commandline cl = PerforceScmProvider.createP4Command( repo, workingDirectory );

                 if(clientspec != null)

                 {

                         cl.createArg().setValue( "-c" );

                         cl.createArg().setValue( clientspec );

                 }

                 cl.createArg().setValue( "filelog" );

         cl.createArg().setValue( filename );

         return cl;

     }

 }