/*******************************************************************************
 * 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.
 *
 * Contributors:
 *               Kamesh Sampath - initial implementation
 *******************************************************************************/

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

import com.liferay.ide.portlet.core.util.PortletAppModelConstants;
import com.liferay.ide.portlet.core.util.PortletModelUtil;
import com.liferay.ide.portlet.core.util.PortletUtil;

import javax.xml.namespace.QName;

import org.eclipse.sapphire.Property;
import org.eclipse.sapphire.modeling.xml.XmlElement;
import org.eclipse.sapphire.modeling.xml.XmlNode;
import org.eclipse.sapphire.modeling.xml.XmlPath;
import org.eclipse.sapphire.modeling.xml.XmlValueBindingImpl;
import org.eclipse.sapphire.modeling.xml.annotations.CustomXmlValueBinding;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;

/**
 * @author Kamesh Sampath
 */

public final class QNameTextNodeValueBinding extends XmlValueBindingImpl
{

    private XmlPath path;
    private String[] params;

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.PropertyBinding#init(org.eclipse.sapphire.modeling.Element,
     * org.eclipse.sapphire.modeling.Property, java.lang.String[])
     */
    @Override
    public void init( final Property property )
    {
        super.init( property );

        this.params = property.definition().getAnnotation( CustomXmlValueBinding.class ).params();
        this.path = new XmlPath( params[0], resource().getXmlNamespaceResolver() );
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.ValuePropertyBinding#read()
     */
    @Override
    public String read()
    {
        String value = null;

        final XmlElement parent = xml( false );

        if( parent != null )
        {
            XmlElement qNamedElement = parent.getChildElement( this.params[0], false );
            if( qNamedElement != null )
            {
                Element domNode = qNamedElement.getDomNode();
                value = qNamedElement.getText();
                if( value != null )
                {
                    String prefix = PortletUtil.stripSuffix( value.trim() );
                    Attr attrib = domNode.getAttributeNode( String.format( PortletAppModelConstants.NS_DECL, prefix ) );
                    if( attrib != null )
                    {
                        QName qname = new QName( attrib.getValue(), PortletUtil.stripPrefix( value ) );
                        value = qname.toString();
                    }

                }

            }
        }
        // System.out.println( "QNamedTextNodeValueBinding.read()" + value );
        return value;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.ValuePropertyBinding#write(java.lang.String)
     */
    @Override
    public void write( final String value )
    {
        String qNameAsString = value;
        XmlElement parent = xml( true );
        // System.out.println( "VALUE ___________________ " + qNameAsString );

        if( qNameAsString != null && !"Q_NAME".equals( qNameAsString ) ) //$NON-NLS-1$
        {
            qNameAsString = value.trim();
            QName qName = QName.valueOf( qNameAsString );
            XmlElement qNamedElement = parent.getChildElement( this.params[0], true );
            String qualifiedNodeValue = PortletModelUtil.defineNS( qNamedElement, qName );
            qNamedElement.setText( qualifiedNodeValue );
        }
        else
        {
            // System.out.println( "Remove:" + params[0] + " from " + parent );
            parent.remove();
        }

        // System.out.println( "TextNodeValueBinding.write() - Parent " + xml( true ).getParent() );

    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.sapphire.modeling.xml.XmlValuePropertyBinding#getXmlNode()
     */
    @Override
    public XmlNode getXmlNode()
    {
        final XmlElement element = xml( false );

        if( element != null )
        {
            return element.getChildNode( this.path, false );
        }

        return null;
    }

}