/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
 * https://plantuml.com/patreon (only 1$ per month!)
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 * 
 * This file is part of PlantUML.
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 *
 *
 */
package net.sourceforge.plantuml.xmi;

import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Element;

import net.sourceforge.plantuml.abel.Entity;
import net.sourceforge.plantuml.abel.Link;
import net.sourceforge.plantuml.classdiagram.ClassDiagram;
import net.sourceforge.plantuml.decoration.LinkDecor;
import net.sourceforge.plantuml.klimt.creole.Display;

public class XmiClassDiagramArgo extends XmiClassDiagramAbstract implements XmlDiagramTransformer {

	public XmiClassDiagramArgo(ClassDiagram classDiagram) throws ParserConfigurationException {
		super(classDiagram);

		addPackage(ownedElementRoot, classDiagram.getRootGroup());

		for (final Link link : classDiagram.getLinks())
			addLink(link);

	}

	final protected Element createElementPackage(Entity group) {
		final Element umlPackage = document.createElement("UML:Package");

		umlPackage.setAttribute("xmi.id", group.getUid());
		umlPackage.setAttribute("name", group.getDisplay().get(0).toString());

		final Element namespaceOwnedElement = document.createElement("UML:Namespace.ownedElement");
		umlPackage.appendChild(namespaceOwnedElement);

		addPackage(namespaceOwnedElement, group);

		return umlPackage;

	}

	private void addPackage(Element element, Entity group) {
		for (final Entity ent : group.leafs()) {
			final Element cla = createEntityNode(ent);
			if (cla == null)
				continue;

			element.appendChild(cla);
			done.add(ent);
		}

		for (final Entity childGroup : group.groups()) {
			final Element result = createElementPackage(childGroup);
			element.appendChild(result);
			done.add(childGroup);
		}

	}

	// somehow temporary duplicate from XmiClassDiagramStar
	private void addLink(Link link) {
		if (link.isHidden() || link.isInvis())
			return;

		final String assId = "ass" + classDiagram.getUniqueSequence("");
		if (link.getType().getDecor1() == LinkDecor.EXTENDS || link.getType().getDecor2() == LinkDecor.EXTENDS) {
			addExtension(link, assId);
			return;
		}
		final Element association = document.createElement("UML:Association");
		association.setAttribute("xmi.id", assId);
		// association.setAttribute("namespace", CucaDiagramXmiMaker.getModel(classDiagram));
		if (Display.isNull(link.getLabel()) == false)
			association.setAttribute("name", forXMI(link.getLabel()));

		final Element connection = document.createElement("UML:Association.connection");
		final Element end1 = document.createElement("UML:AssociationEnd");
		end1.setAttribute("xmi.id", "end" + classDiagram.getUniqueSequence(""));
		end1.setAttribute("association", assId);
		end1.setAttribute("type", link.getEntity1().getUid());
		if (link.getQuantifier1() != null)
			end1.setAttribute("name", forXMI(link.getQuantifier1()));

		final Element endparticipant1 = document.createElement("UML:AssociationEnd.participant");

		if (link.getType().getDecor2() == LinkDecor.COMPOSITION)
			end1.setAttribute("aggregation", "composite");

		if (link.getType().getDecor2() == LinkDecor.AGREGATION)
			end1.setAttribute("aggregation", "aggregate");

		end1.appendChild(endparticipant1);
		connection.appendChild(end1);

		final Element end2 = document.createElement("UML:AssociationEnd");
		end2.setAttribute("xmi.id", "end" + classDiagram.getUniqueSequence(""));
		end2.setAttribute("association", assId);
		end2.setAttribute("type", link.getEntity2().getUid());
		if (link.getQuantifier2() != null)
			end2.setAttribute("name", forXMI(link.getQuantifier2()));

		final Element endparticipant2 = document.createElement("UML:AssociationEnd.participant");

		if (link.getType().getDecor1() == LinkDecor.COMPOSITION)
			end2.setAttribute("aggregation", "composite");

		if (link.getType().getDecor1() == LinkDecor.AGREGATION)
			end2.setAttribute("aggregation", "aggregate");

		end2.appendChild(endparticipant2);
		connection.appendChild(end2);

		association.appendChild(connection);

		ownedElementRoot.appendChild(association);

	}

	private void addExtension(Link link, String assId) {
		final Element association = document.createElement("UML:Generalization");
		association.setAttribute("xmi.id", assId);
		if (link.getLabel() != null)
			association.setAttribute("name", forXMI(link.getLabel()));

		if (link.getType().getDecor1() == LinkDecor.EXTENDS)
			generalizationChildParent(association, link.getEntity1().getUid(), link.getEntity2().getUid());
		else if (link.getType().getDecor2() == LinkDecor.EXTENDS)
			generalizationChildParent(association, link.getEntity2().getUid(), link.getEntity1().getUid());
		else
			throw new IllegalStateException();

		ownedElementRoot.appendChild(association);

	}

	private void generalizationChildParent(Element association, String uidChild, String uidParent) {
		final Element child = document.createElement("UML:Generalization.child");
		final Element parent = document.createElement("UML:Generalization.parent");
		
		final Element classChild = document.createElement("UML:Class");
		classChild.setAttribute("xmi.idref", uidChild);
		final Element classParent = document.createElement("UML:Class");
		classParent.setAttribute("xmi.idref", uidParent);
		
		parent.appendChild(classParent);
		child.appendChild(classChild);
		
		association.appendChild(child);
		association.appendChild(parent);
//		association.setAttribute("child", uidChild);
//		association.setAttribute("parent", uidParent);

	}

	private void addLinkLegacyUnused(Link link) {
		if (link.isHidden() || link.isInvis())
			return;

		final String assId = "ass" + classDiagram.getUniqueSequence("");

		final Element association = document.createElement("UML:Association");
		association.setAttribute("xmi.id", assId);
		// association.setAttribute("namespace",
		// CucaDiagramXmiMaker.getModel(classDiagram));
		if (link.getLabel() != null)
			association.setAttribute("name", forXMI(link.getLabel()));

		final Element connection = document.createElement("UML:Association.connection");
		final Element end1 = document.createElement("UML:AssociationEnd");
		end1.setAttribute("xmi.id", "end" + classDiagram.getUniqueSequence(""));
		end1.setAttribute("association", assId);
		end1.setAttribute("type", link.getEntity1().getUid());
		if (link.getQuantifier1() != null)
			end1.setAttribute("name", forXMI(link.getQuantifier1()));

		final Element endparticipant1 = document.createElement("UML:AssociationEnd.participant");

		if (done.contains(link.getEntity1())) {
			endparticipant1.appendChild(createEntityNodeRef(link.getEntity1()));
		} else {
			final Element element = createEntityNode(link.getEntity1());
			if (element == null)
				return;

			endparticipant1.appendChild(element);
			done.add(link.getEntity1());
		}

		end1.appendChild(endparticipant1);
		connection.appendChild(end1);

		final Element end2 = document.createElement("UML:AssociationEnd");
		end2.setAttribute("xmi.id", "end" + classDiagram.getUniqueSequence(""));
		end2.setAttribute("association", assId);
		end2.setAttribute("type", link.getEntity2().getUid());
		if (link.getQuantifier2() != null)
			end2.setAttribute("name", forXMI(link.getQuantifier2()));

		final Element endparticipant2 = document.createElement("UML:AssociationEnd.participant");

		if (done.contains(link.getEntity2())) {
			endparticipant2.appendChild(createEntityNodeRef(link.getEntity2()));
		} else {
			final Element element = createEntityNode(link.getEntity2());
			if (element == null)
				return;

			endparticipant2.appendChild(element);
			done.add(link.getEntity2());
		}

		end2.appendChild(endparticipant2);
		connection.appendChild(end2);

		association.appendChild(connection);

		ownedElementRoot.appendChild(association);

	}

	private Element createEntityNodeRef(Entity entity) {
		final Element cla = document.createElement("UML:Class");
		cla.setAttribute("xmi.idref", entity.getUid());
		return cla;
	}

}
