/*******************************************************************************
 * 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.layouttpl.core.model;

import com.liferay.ide.core.util.CoreUtil;
import com.liferay.ide.layouttpl.core.LayoutTplCore;
import com.liferay.ide.layouttpl.core.util.LayoutTplUtil;

import org.eclipse.core.resources.IFile;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMDocument;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;


/**
 * @author Gregory Amerson
 * @author Cindy Li
 * @author Kuo Zhang
 *
 */
@SuppressWarnings( "restriction" )
public class LayoutTplElementsFactory
{

    public static LayoutTplElementsFactory INSTANCE = new LayoutTplElementsFactory();

    public void initPortletColumnFromElement( PortletColumnElement portletColumn, IDOMElement domElement )
    {
        if( domElement == null )
        {
            return;
        }

        String existingClassName = domElement.getAttribute( "class" );

        if( !CoreUtil.isNullOrEmpty( existingClassName ) &&
            !existingClassName.equals( portletColumn.getClassName().content() ) &&
             existingClassName.contains( "portlet-column" ) )
        {
            portletColumn.setClassName( existingClassName );
        }

        portletColumn.setWeight( LayoutTplUtil.getWeightValue( domElement, -1 ) );

        IDOMElement[] portletLayoutDOMElements =
            LayoutTplUtil.findChildElementsByClassName( domElement, "div", "portlet-layout" );

        if( !CoreUtil.isNullOrEmpty( portletLayoutDOMElements ) )
        {
            for( IDOMElement portletLayoutDOMElement : portletLayoutDOMElements )
            {
                PortletLayoutElement portletLayout = portletColumn.getPortletLayouts().insert();
                this.initPortletLayoutFromElement( portletLayout, portletLayoutDOMElement );
            }
        }
    }

    public void initPortletLayoutFromElement( PortletLayoutElement portletLayout, IDOMElement domElement )
    {
        if( domElement == null )
        {
            return;
        }

        String existingClassName = domElement.getAttribute( "class" );

        if( ( !CoreUtil.isNullOrEmpty( existingClassName ) ) &&
               existingClassName.contains( portletLayout.getClassName().content() ) )
        {
            portletLayout.setClassName( existingClassName );
        }

        IDOMElement[] portletColumnDOMElements =
            LayoutTplUtil.findChildElementsByClassName( domElement, "div", "portlet-column" );

        for( IDOMElement portletColumnElement : portletColumnDOMElements )
        {
            PortletColumnElement portletColumn = portletLayout.getPortletColumns().insert();
            this.initPortletColumnFromElement( portletColumn, portletColumnElement );
        }
    }

    public LayoutTplElement newLayoutTplFromFile( IFile file, Boolean isBootstrapStyle, Boolean is62 )
    {
        if( file == null || !( file.exists() ) )
        {
            return null;
        }

        LayoutTplElement layoutTpl = null;
        IDOMModel domModel = null;
        try
        {
            domModel= (IDOMModel) StructuredModelManager.getModelManager().getModelForRead( file );
            layoutTpl = newLayoutTplFromModel( domModel, isBootstrapStyle, is62 );
        }
        catch( Exception e )
        {
            LayoutTplCore.logError( "Unable to read layout template file " + file.getName(), e );
        }
        finally
        {
            if( domModel != null )
            {
                domModel.releaseFromRead();
            }
        }

        return layoutTpl;
    }

    public LayoutTplElement newLayoutTplFromModel( IDOMModel model, Boolean isBootstrapStyle, Boolean is62 )
    {
        if( model == null )
        {
            return null;
        }

        LayoutTplElement layoutTpl = null;

        IDOMDocument rootDocument = model.getDocument();
        IDOMElement mainContentElement = LayoutTplUtil.findMainContentElement( rootDocument );

        if( mainContentElement != null )
        {
            layoutTpl = LayoutTplElement.TYPE.instantiate();
            layoutTpl.setBootstrapStyle( isBootstrapStyle );
            layoutTpl.setClassName( mainContentElement.getAttribute( "class" ) );
            layoutTpl.setIs62( is62 );

            IDOMElement[] portletLayoutElements =
                LayoutTplUtil.findChildElementsByClassName( mainContentElement, "div", "portlet-layout" );

            if( !CoreUtil.isNullOrEmpty( portletLayoutElements ) )
            {
                for( IDOMElement portletLayoutElement : portletLayoutElements )
                {
                    PortletLayoutElement portletLayout = layoutTpl.getPortletLayouts().insert();
                    this.initPortletLayoutFromElement( portletLayout, portletLayoutElement );
                }
            }
        }

        return layoutTpl;
    }

}