/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 *******************************************************************************/

package com.liferay.ide.service.core.model.internal;

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

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IPath;
import org.eclipse.sapphire.Element;
import org.eclipse.sapphire.modeling.Path;
import org.eclipse.sapphire.platform.PathBridge;
import org.eclipse.sapphire.services.RelativePathService;

/**
 * @author Gregory Amerson
 */
public class ImportPathService extends RelativePathService
{

    @Override
    public List<Path> roots()
    {
        final File file = context( Element.class ).adapt( File.class );

        if( file == null )
        {
            return Collections.emptyList();
        }
        else
        {
            return Collections.singletonList( new Path( file.getParent() ) );
        }
    }

    @Override
    public boolean enclosed()
    {
        return false;
    }

    @Override
    public Path convertToAbsolute( Path path )
    {
        if( path != null )
        {
            final IFile file = context( Element.class ).adapt( IFile.class );

            if( file != null )
            {
                final IPath baseLocation = file.getParent().getLocation();

                final IPath absoluteLocation = baseLocation.append( PathBridge.create( path ) );
                Path absolute = PathBridge.create( absoluteLocation.makeAbsolute() );

                return absolute;
            }
        }
        return super.convertToAbsolute( path );
    }

    @Override
    public Path convertToRelative( Path path )
    {
        if( path != null )
        {
            final IFile file = context( Element.class ).adapt( IFile.class );

            if( file != null )
            {
                IPath baseLocation = file.getParent().getLocation();

                if( baseLocation != null )
                {
                    return path.makeRelativeTo( PathBridge.create( baseLocation ) );
                }
            }
        }

        return null;
    }
}