package org.apache.maven.continuum.release.phase;

/*
 * 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.ScmVersion;
import org.apache.maven.scm.command.update.UpdateScmResult;
import org.apache.maven.scm.manager.NoSuchScmProviderException;
import org.apache.maven.scm.provider.ScmProvider;
import org.apache.maven.scm.repository.ScmRepository;
import org.apache.maven.scm.repository.ScmRepositoryException;
import org.apache.maven.settings.Settings;
import org.apache.maven.shared.release.ReleaseExecutionException;
import org.apache.maven.shared.release.ReleaseFailureException;
import org.apache.maven.shared.release.ReleaseResult;
import org.apache.maven.shared.release.config.ReleaseDescriptor;
import org.apache.maven.shared.release.phase.AbstractReleasePhase;
import org.apache.maven.shared.release.scm.ReleaseScmCommandException;
import org.apache.maven.shared.release.scm.ReleaseScmRepositoryException;
import org.apache.maven.shared.release.scm.ScmRepositoryConfigurator;

import java.io.File;
import java.util.List;

/**
 * Update working copy
 *
 * @author Edwin Punzalan
 */
public class UpdateWorkingCopyPhase
    extends AbstractReleasePhase
{
    /**
     * Tool that gets a configured SCM repository from release configuration.
     */
    private ScmRepositoryConfigurator scmRepositoryConfigurator;

    private boolean copyUpdated = false;

    public ReleaseResult execute( ReleaseDescriptor releaseDescriptor, Settings settings, List reactorProjects )
        throws ReleaseExecutionException, ReleaseFailureException
    {
        ReleaseResult relResult = new ReleaseResult();

        logInfo( relResult, "Updating local copy against the scm..." );

        ScmRepository repository;
        ScmProvider provider;
        try
        {
            repository = scmRepositoryConfigurator.getConfiguredRepository( releaseDescriptor, settings );

            provider = scmRepositoryConfigurator.getRepositoryProvider( repository );
        }
        catch ( ScmRepositoryException e )
        {
            throw new ReleaseScmRepositoryException(
                e.getMessage() + " for URL: " + releaseDescriptor.getScmSourceUrl(), e.getValidationMessages() );
        }
        catch ( NoSuchScmProviderException e )
        {
            throw new ReleaseExecutionException( "Unable to configure SCM repository: " + e.getMessage(), e );
        }

        UpdateScmResult result;
        try
        {
            result = provider.update( repository, new ScmFileSet( new File( releaseDescriptor.getWorkingDirectory() ) ),
                                      (ScmVersion) null );
        }
        catch ( ScmException e )
        {
            throw new ReleaseExecutionException( "An error occurred while updating your local copy: " + e.getMessage(),
                                                 e );
        }

        if ( !result.isSuccess() )
        {
            throw new ReleaseScmCommandException( "Unable to update current working copy", result );
        }

        copyUpdated = ( result.getUpdatedFiles().size() > 0 );

        relResult.setResultCode( ReleaseResult.SUCCESS );

        return relResult;
    }

    public ReleaseResult simulate( ReleaseDescriptor releaseDescriptor, Settings settings, List reactorProjects )
        throws ReleaseExecutionException, ReleaseFailureException
    {
        return execute( releaseDescriptor, settings, reactorProjects );
    }

    public boolean isCopyUpdated()
    {
        return copyUpdated;
    }

    public void setCopyUpdated( boolean copyUpdated )
    {
        this.copyUpdated = copyUpdated;
    }
}