/*******************************************************************************
 * 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.portlet.vaadin.core.dd;

import com.liferay.ide.core.ILiferayConstants;
import com.liferay.ide.core.util.CoreUtil;
import com.liferay.ide.core.util.NodeUtil;
import com.liferay.ide.portlet.core.dd.LiferayPortletDescriptorHelper;
import com.liferay.ide.portlet.vaadin.core.operation.INewVaadinPortletClassDataModelProperties;
import com.liferay.ide.server.util.ServerUtil;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMDocument;
import org.osgi.framework.Version;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;


/**
 * @author Henri Sara
 * @author Tao Tao
 * @author Kuo Zhang
 */
@SuppressWarnings( "restriction" )
public class VaadinLiferayPortletDescriptorHelper extends LiferayPortletDescriptorHelper
                                                  implements INewVaadinPortletClassDataModelProperties
{
    public VaadinLiferayPortletDescriptorHelper()
    {
        super();
    }

    public VaadinLiferayPortletDescriptorHelper( IProject project )
    {
        super( project );
    }

    @Override
    protected void addDescriptorOperations()
    {
        super.addDescriptorOperations();
    }

    @Override
    public boolean canAddNewPortlet( IDataModel model )
    {
        return model.getID().contains( "NewVaadinPortlet" );
    }

    @Override
    protected IStatus doAddNewPortlet( IDOMDocument document, IDataModel model )
    {
        IStatus status = Status.OK_STATUS;

        status = super.doAddNewPortlet( document, model );

        if( ! status.isOK() )
        {
            return status;
        }

        final Version runtimeVersion = ServerUtil.getRuntimeVersion( project );

        // Runtime version should be equal or greater than 6.2.
        if( CoreUtil.compareVersions( runtimeVersion, ILiferayConstants.V620 ) >= 0 )
        {
            final IFile descriptorFile = getDescriptorFile();

            if( descriptorFile != null )
            {
                DOMModelOperation op = new DOMModelEditOperation( descriptorFile )
                {

                    @Override
                    protected void createDefaultFile()
                    {
                        // Getting document from super( descriptorFile );
                    }

                    @Override
                    protected IStatus doExecute( IDOMDocument document )
                    {
                        return updateVaadinLiferayPortletXMLTo62( document );
                    }
                };

                return op.execute();
            }
        }

        return status;
    }

    private IStatus updateVaadinLiferayPortletXMLTo62( IDOMDocument document )
    {
        Element rootElement = document.getDocumentElement();

        NodeList portletNodes = rootElement.getElementsByTagName( "portlet" );

        if( portletNodes.getLength() > 1 )
        {
            Element lastPortletElement = (Element) portletNodes.item( portletNodes.getLength() - 1 );

            Node rnpNode = NodeUtil.appendChildElement( lastPortletElement, "requires-namespaced-parameters", "false" );
            Node ajaxNode = NodeUtil.appendChildElement( lastPortletElement, "ajaxable", "false" );
            Node hpcNode = lastPortletElement.getElementsByTagName( "header-portlet-css" ).item( 0 );
            Node fpjNode = lastPortletElement.getElementsByTagName( "footer-portlet-javascript" ).item( 0 );

            lastPortletElement.replaceChild( rnpNode, hpcNode );
            lastPortletElement.replaceChild( ajaxNode, fpjNode );
        }

        return Status.OK_STATUS;
    }

}