/* ========================================================================
 * 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.timingdiagram.graphic;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;

import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.klimt.shape.ULine;
import net.sourceforge.plantuml.style.ISkinParam;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.timingdiagram.ChangeState;
import net.sourceforge.plantuml.timingdiagram.TimeConstraint;
import net.sourceforge.plantuml.timingdiagram.TimeTick;
import net.sourceforge.plantuml.timingdiagram.TimingNote;
import net.sourceforge.plantuml.timingdiagram.TimingRuler;
import net.sourceforge.plantuml.utils.Position;

public class PanelsBinary extends PanelsNoLeft {

	private static final String LOW_STRING = "0";
	private static final String HIGH_STRING = "1";

	private final SortedMap<TimeTick, ChangeState> values;
	private final ChangeState initialState;

	public PanelsBinary(TimingRuler ruler, ISkinParam skinParam, int suggestedHeight, Style style,
			SortedMap<TimeTick, ChangeState> values, List<TimeConstraint> constraints, ChangeState initialState,
			List<TimingNote> notes) {
		super(ruler, skinParam, suggestedHeight, style, notes, constraints);

		this.values = values;
		this.initialState = initialState;
	}

	@Override
	public double getFullHeight(StringBounder stringBounder) {
		return getHeightForConstraints(stringBounder) + getHeightForNotes(stringBounder, Position.TOP) + suggestedHeight
				+ getHeightForNotes(stringBounder, Position.BOTTOM);
	}

	@Override
	public IntricatedPoint getTimeProjection(StringBounder stringBounder, TimeTick tick) {
		if (tick == null)
			return null;
		final double x = ruler.getPosInPixel(tick);
		return new IntricatedPoint(new XPoint2D(x, getYpos(stringBounder, HIGH_STRING)),
				new XPoint2D(x, getYpos(stringBounder, HIGH_STRING)));
	}

	private double getYpos(StringBounder stringBounder, String state) {
		if (state.equalsIgnoreCase(LOW_STRING))
			return getYlow(stringBounder);
		return getYhigh(stringBounder);
	}

	private double getYhigh(StringBounder stringBounder) {
		return MARGIN_Y + getHeightForConstraints(stringBounder) + getHeightForNotes(stringBounder, Position.TOP);
	}

	private double getYlow(StringBounder stringBounder) {
		return getHeightForConstraints(stringBounder) + getHeightForNotes(stringBounder, Position.TOP) + suggestedHeight
				- MARGIN_Y;
	}

	@Override
	public void drawRightPanel(UGraphic ug) {
		ug = getContext().apply(ug);
		double lastx = 0;
		List<String> lastValues = initialState == null ? Collections.singletonList(LOW_STRING)
				: initialState.getStates();
		final StringBounder stringBounder = ug.getStringBounder();
		final double yhigh = getYhigh(stringBounder);
		final double ylow = getYlow(stringBounder);
		final ULine vline = ULine.vline(ylow - yhigh);
		for (Map.Entry<TimeTick, ChangeState> ent : values.entrySet()) {
			final ChangeState value = ent.getValue();

			final double x = ruler.getPosInPixel(ent.getKey());

			if (lastValues.size() == 1)
				ug.apply(new UTranslate(lastx, getYpos(stringBounder, lastValues.get(0)))).draw(ULine.hline(x - lastx));
			else
				for (double tmpx = lastx; tmpx < x; tmpx += 5)
					ug.apply(new UTranslate(tmpx, yhigh)).draw(vline);

			if (lastValues.equals(value.getStates()) == false)
				ug.apply(new UTranslate(x, yhigh)).draw(vline);

			if (value.getComment() != null) {
				final TextBlock label = getTextBlock(value.getComment());
				label.drawU(ug.apply(new UTranslate(x + 2, yhigh)));
			}

			lastx = x;
			lastValues = value.getStates();
		}
		ug.apply(new UTranslate(lastx, getYpos(stringBounder, lastValues.get(0))))
				.draw(ULine.hline(ruler.getWidth() - lastx));

		drawConstraints(ug.apply(UTranslate.dy(getHeightForConstraints(ug.getStringBounder()))));

		drawNotes(ug.apply(UTranslate.dy(MARGIN_Y)), Position.TOP);
		drawNotes(
				ug.apply(UTranslate.dy(getHeightForConstraints(stringBounder)
						+ getHeightForNotes(stringBounder, Position.TOP) + suggestedHeight - MARGIN_Y / 2)),
				Position.BOTTOM);
	}

}
