/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2020, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
 * http://plantuml.com/patreon (only 1$ per month!)
 * http://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.graphic;

import java.util.Objects;

import net.sourceforge.plantuml.ISkinParam;
import net.sourceforge.plantuml.UseStyle;
import net.sourceforge.plantuml.cucadiagram.LinkStyle;
import net.sourceforge.plantuml.style.PName;
import net.sourceforge.plantuml.style.SName;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.style.StyleSignature;
import net.sourceforge.plantuml.ugraphic.color.HColor;
import net.sourceforge.plantuml.ugraphic.color.HColorSet;
import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;

public class HtmlColorAndStyle {

	private final HColor arrowHeadColor;
	private final HColor arrowColor;
	private final LinkStyle style;

	@Override
	public String toString() {
		return arrowColor + " " + style;
	}

	public HtmlColorAndStyle(HColor color, HColor arrowHeadColor) {
		this(color, LinkStyle.NORMAL(), arrowHeadColor);
	}

	public HtmlColorAndStyle(HColor arrowColor, LinkStyle style, HColor arrowHeadColor) {
		this.arrowColor = Objects.requireNonNull(arrowColor);
		this.arrowHeadColor = arrowHeadColor == null ? arrowColor : arrowHeadColor;
		this.style = style;
	}

	public HColor getArrowColor() {
		return arrowColor;
	}

	public HColor getArrowHeadColor() {
		return arrowHeadColor;
	}

	public LinkStyle getStyle() {
		return style;
	}

	static final public StyleSignature getDefaultStyleDefinitionArrow() {
		return StyleSignature.of(SName.root, SName.element, SName.activityDiagram, SName.arrow);
	}

	public static HtmlColorAndStyle build(ISkinParam skinParam, String definition) throws NoSuchColorException {
		HColor arrowColor;
		HColor arrowHeadColor = null;
		if (UseStyle.useBetaStyle()) {
			final Style style = getDefaultStyleDefinitionArrow().getMergedStyle(skinParam.getCurrentStyleBuilder());
			arrowColor = style.value(PName.LineColor).asColor(skinParam.getThemeStyle(), skinParam.getIHtmlColorSet());
		} else {
			arrowColor = Rainbow.build(skinParam).getColors().get(0).arrowColor;
			arrowColor = Rainbow.build(skinParam).getColors().get(0).arrowHeadColor;
		}
		LinkStyle style = LinkStyle.NORMAL();
		final HColorSet set = skinParam.getIHtmlColorSet();
		for (String s : definition.split(",")) {
			final LinkStyle tmpStyle = LinkStyle.fromString1(s);
			if (tmpStyle.isNormal() == false) {
				style = tmpStyle;
				continue;
			}
			final HColor tmpColor = s == null ? null : set.getColor(skinParam.getThemeStyle(), s);
			if (tmpColor != null) {
				arrowColor = tmpColor;
			}
		}
		return new HtmlColorAndStyle(arrowColor, style, arrowHeadColor);
	}

}
