/* ========================================================================
 * 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!)
 * https://plantuml.com/paypal
 * 
 * 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.svek;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import net.atmp.CucaDiagram;
import net.sourceforge.plantuml.AnnotatedBuilder;
import net.sourceforge.plantuml.AnnotatedWorker;
import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.abel.Link;
import net.sourceforge.plantuml.core.ImageData;
import net.sourceforge.plantuml.dot.CucaDiagramSimplifierActivity;
import net.sourceforge.plantuml.dot.CucaDiagramSimplifierState;
import net.sourceforge.plantuml.dot.DotData;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.log.Logme;
import net.sourceforge.plantuml.skin.UmlDiagramType;

public final class CucaDiagramFileMakerSvek extends CucaDiagramFileMaker {
	// ::remove file when __CORE__

	public CucaDiagramFileMakerSvek(CucaDiagram diagram) throws IOException {
		super(diagram);

	}

	public ImageData createFile(OutputStream os, List<String> dotStrings, FileFormatOption fileFormatOption)
			throws IOException {
		try {
			return createFileInternal(os, dotStrings, fileFormatOption);
		} catch (InterruptedException e) {
			Logme.error(e);
			throw new IOException(e);
		}
	}

	@Override
	public void createOneGraphic(UGraphic ug) {
		throw new UnsupportedOperationException();
	}

	private ImageData createFileInternal(OutputStream os, List<String> dotStrings, FileFormatOption fileFormatOption)
			throws IOException, InterruptedException {

		final StringBounder stringBounder = fileFormatOption.getDefaultStringBounder(diagram.getSkinParam());

		if (diagram.getUmlDiagramType() == UmlDiagramType.ACTIVITY)
			new CucaDiagramSimplifierActivity().simplify(diagram, stringBounder, DotMode.NORMAL);
		else if (diagram.getUmlDiagramType() == UmlDiagramType.STATE)
			new CucaDiagramSimplifierState().simplify(diagram, stringBounder, DotMode.NORMAL);

		final DotStringFactory dotStringFactory = new DotStringFactory(bibliotekon, clusterManager.getCurrent(),
				diagram.getUmlDiagramType(), diagram.getSkinParam());

		final DotData dotData = new DotData(diagram, diagram.getRootGroup(), getOrderedLinks(), diagram.leafs(),
				diagram, diagram);

		GraphvizImageBuilder imageBuilder = new GraphvizImageBuilder(dotData, diagram.getSource(), diagram.getPragma(),
				diagram.getUmlDiagramType().getStyleName(), DotMode.NORMAL, dotStringFactory, clusterManager);
		BaseFile basefile = null;
		if (fileFormatOption.isDebugSvek() && os instanceof NamedOutputStream)
			basefile = ((NamedOutputStream) os).getBasefile();

		TextBlock result = imageBuilder.buildImage(stringBounder, basefile, diagram.getDotStringSkek(),
				fileFormatOption.isDebugSvek());
		if (result instanceof GraphvizCrash) {
			imageBuilder = new GraphvizImageBuilder(dotData, diagram.getSource(), diagram.getPragma(),
					diagram.getUmlDiagramType().getStyleName(), DotMode.NO_LEFT_RIGHT_AND_XLABEL, dotStringFactory,
					clusterManager);
			result = imageBuilder.buildImage(stringBounder, basefile, diagram.getDotStringSkek(),
					fileFormatOption.isDebugSvek());
		}
		// TODO There is something strange with the left margin of mainframe, I think
		// because AnnotatedWorker is used here
		// It can be looked at in another PR
		final AnnotatedBuilder builder = new AnnotatedBuilder(diagram, diagram.getSkinParam(), stringBounder);
		result = new AnnotatedWorker(diagram, diagram.getSkinParam(), stringBounder, builder).addAdd(result);

		// TODO UmlDiagram.getWarningOrError() looks similar so this might be
		// simplified? - will leave for a separate PR
		final String widthwarning = diagram.getSkinParam().getValue("widthwarning");
		String warningOrError = null;
		if (widthwarning != null && widthwarning.matches("\\d+"))
			warningOrError = imageBuilder.getWarningOrError(Integer.parseInt(widthwarning));

		// Sorry about this hack. There is a side effect in
		// SvekResult::calculateDimension()
		result.calculateDimension(stringBounder); // Ensure text near the margins is not cut off

		return diagram.createImageBuilder(fileFormatOption).annotations(false) // backwards compatibility
																				// (AnnotatedWorker is used above)
				.drawable(result).status(result instanceof GraphvizCrash ? 503 : 0).warningOrError(warningOrError)
				.write(os);
	}

	private List<Link> getOrderedLinks() {
		final List<Link> result = new ArrayList<>();
		for (Link l : diagram.getLinks())
			addLinkNew(result, l);

		return result;
	}

	private void addLinkNew(List<Link> result, Link link) {
		for (int i = 0; i < result.size(); i++) {
			final Link other = result.get(i);
			if (other.sameConnections(link)) {
				while (i < result.size() && result.get(i).sameConnections(link))
					i++;

				if (i == result.size())
					result.add(link);
				else
					result.add(i, link);

				return;
			}
		}
		result.add(link);
	}

}
