/*

 * Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:  

 *

 */

package com.nokia.helium.scm.ant.actions;

import org.apache.maven.scm.ScmException;

import org.apache.maven.scm.command.checkout.CheckOutScmResult;

import org.apache.maven.scm.manager.ScmManager;

import org.apache.maven.scm.repository.ScmRepository;

import org.apache.tools.ant.BuildException;

import com.nokia.helium.scm.ant.types.Tag;

/**

 * Checkout the defined project. Depending on the kind of repository used this

 * can mean for example the cloning of a repository in the case of Mercurial or the copying of 

 * a repository in the case of SVN.

 *

 * <pre>

 * <hlm:scm verbose="true" scmUrl="scm:${repo.type}:${repo.dir}/test3">

 *     <hlm:checkout baseDir="${repo.dir}/cloned" />

 * </hlm:scm>

 * </pre>

 *

 * @ant.type name="checkout" category="SCM"

 */

public class CheckoutAction extends BaseDirectoryScmAction {

    private List<Tag> tags = new ArrayList<Tag>();

    private List<Revision> revisions = new ArrayList<Revision>();

    public Tag createTag() {

        Tag tag = new Tag();

        add(tag);

        return tag;

    }

    public void add(Tag tag) {

        tags.add(tag);

    }

    public Revision createRevision() {

        Revision revision = new Revision();

        add(revision);

        return revision;

    }

    public void add(Revision revision) {

        revisions.add(revision);

    }

    @Override

    public void execute(ScmRepository repository) throws ScmException {

        ScmManager scmManager = getTask().getScmManager();

            throw new ScmException(

                    "You can only specify one tag nested element.");

            throw new ScmException(

                    "You can only specify one revision nested element.");

        if ((tags.size() == 1) && (revisions.size() == 1)) {

            throw new ScmException(

                    "You can not specify nested element 'revision' and 'tag' together.");

        }

        CheckOutScmResult result;

        try {

            if (tags.size() == 1) {

                result = scmManager.checkOut(repository, getScmFileSet(),

                        new ScmTag(tags.get(0).getName()));

            } else if (revisions.size() == 1) {

                result = scmManager.checkOut(repository, getScmFileSet(),

                        new ScmRevision(revisions.get(0).getName()));

            } else {

                result = scmManager.checkOut(repository, getScmFileSet());

            }

        } catch (ScmException e) {

            throw new BuildException("SCM checkout action failed: " + e);

        }

        if (!result.isSuccess()) {

            throw new BuildException("SCM checkout action failed.");

        }

    }

}