package org.apache.maven.scm.provider.perforce.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 java.io.File;

 import java.text.DateFormat;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 import java.util.List;

 import org.apache.maven.scm.ScmBranch;

 import org.apache.maven.scm.ScmException;

 import org.apache.maven.scm.ScmFileSet;

 import org.apache.maven.scm.ScmVersion;

 import org.apache.maven.scm.command.changelog.AbstractChangeLogCommand;

 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.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.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

  * @version $Id: PerforceChangeLogCommand.java 1306867 2012-03-29 13:45:10Z olamy $

  */

 public class PerforceChangeLogCommand

     extends AbstractChangeLogCommand

     implements PerforceCommand

 {

     /** {@inheritDoc} */

     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 );

     }

     /** {@inheritDoc} */

     protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,

                                                           Date startDate, Date endDate, ScmBranch branch,

                                                           String datePattern )

         throws ScmException

     {

         if ( branch != null && StringUtils.isNotEmpty( branch.getName() ) )

         {

             throw new ScmException( "This SCM doesn't support branches." );

         }

         return executeChangeLogCommand( repo, fileSet, startDate, endDate, branch, datePattern, null, null );

     }

     protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,

                                                           Date startDate, Date endDate, ScmBranch branch,

                                                           String datePattern, ScmVersion startVersion,

                                                           ScmVersion endVersion )

         throws ScmException

     {

         PerforceScmProviderRepository p4repo = (PerforceScmProviderRepository) repo;

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

         Commandline cl = createCommandLine( p4repo, fileSet.getBasedir(), clientspec, null, startDate, endDate, startVersion, endVersion );

         String location = PerforceScmProvider.getRepoPath( getLogger(), p4repo, fileSet.getBasedir() );

         PerforceChangesConsumer consumer =

             new PerforceChangesConsumer( getLogger() );

         try

         {

             if ( getLogger().isDebugEnabled() )

             {

                 getLogger().debug( PerforceScmProvider.clean( "Executing " + cl.toString() ) );

             }

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

             int exitCode = CommandLineUtils.executeCommandLine( cl, consumer, err );

             if ( exitCode != 0 )

             {

                 String cmdLine = CommandLineUtils.toString( cl.getCommandline() );

                 StringBuilder msg = new StringBuilder( "Exit code: " + exitCode + " - " + err.getOutput() );

                 msg.append( '\n' );

                 msg.append( "Command line was:" + cmdLine );

                 throw new CommandLineException( msg.toString() );

             }

         }

         catch ( CommandLineException e )

         {

             if ( getLogger().isErrorEnabled() )

             {

                 getLogger().error( "CommandLineException " + e.getMessage(), e );

             }

         }

         List<String> changes = consumer.getChanges();

         cl = PerforceScmProvider.createP4Command( p4repo, fileSet.getBasedir() );

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

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

         for( String change : changes )

         {

             cl.createArg().setValue( change );

         }

         PerforceDescribeConsumer describeConsumer =

             new PerforceDescribeConsumer( location, datePattern, getLogger() );

         try

         {

             if ( getLogger().isDebugEnabled() )

             {

                 getLogger().debug( PerforceScmProvider.clean( "Executing " + cl.toString() ) );

             }

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

             int exitCode = CommandLineUtils.executeCommandLine( cl, describeConsumer, err );

             if ( exitCode != 0 )

             {

                 String cmdLine = CommandLineUtils.toString( cl.getCommandline() );

                 StringBuilder msg = new StringBuilder( "Exit code: " + exitCode + " - " + err.getOutput() );

                 msg.append( '\n' );

                 msg.append( "Command line was:" + cmdLine );

                 throw new CommandLineException( msg.toString() );

             }

         }

         catch ( CommandLineException e )

         {

             if ( getLogger().isErrorEnabled() )

             {

                 getLogger().error( "CommandLineException " + e.getMessage(), e );

             }

         }

         ChangeLogSet cls = new ChangeLogSet( describeConsumer.getModifications(), null, null );

         cls.setStartVersion(startVersion);

         cls.setEndVersion(endVersion);

         return new ChangeLogScmResult( cl.toString(), cls );

     }

     public static Commandline createCommandLine( PerforceScmProviderRepository repo, File workingDirectory,

                                                  String clientspec,

                                                  ScmBranch branch, Date startDate, Date endDate,

                                                  ScmVersion startVersion, ScmVersion endVersion )

     {

         DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd:HH:mm:ss");

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

         if ( clientspec != null )

         {

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

             command.createArg().setValue( clientspec );

         }

         command.createArg().setValue( "changes" );

         command.createArg().setValue( "-t" );

         StringBuilder fileSpec = new StringBuilder("...");

         if ( startDate != null )

         {

             fileSpec.append( "@" )

                  .append( dateFormat.format(startDate) )

                  .append( "," );

             if ( endDate != null )

             {

                 fileSpec.append( dateFormat.format(endDate) );

             }

             else

             {

                 fileSpec.append( "now" );

             }

         }

         if ( startVersion != null )

         {

             fileSpec.append("@").append(startVersion.getName()).append(",");

             if ( endVersion != null )

             {

                 fileSpec.append( endVersion.getName() );

             }

             else

             {

                 fileSpec.append("now");

             }

         }

         command.createArg().setValue( fileSpec.toString() );

         return command;

     }

 }