/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2017, 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.command;

import net.sourceforge.plantuml.StringUtils;
import net.sourceforge.plantuml.Url;
import net.sourceforge.plantuml.UrlBuilder;
import net.sourceforge.plantuml.UrlBuilder.ModeUrl;
import net.sourceforge.plantuml.classdiagram.AbstractEntityDiagram;
import net.sourceforge.plantuml.command.regex.RegexConcat;
import net.sourceforge.plantuml.command.regex.RegexLeaf;
import net.sourceforge.plantuml.command.regex.RegexResult;
import net.sourceforge.plantuml.cucadiagram.Code;
import net.sourceforge.plantuml.cucadiagram.Display;
import net.sourceforge.plantuml.cucadiagram.GroupType;
import net.sourceforge.plantuml.cucadiagram.IEntity;
import net.sourceforge.plantuml.cucadiagram.IGroup;
import net.sourceforge.plantuml.cucadiagram.Stereotype;
import net.sourceforge.plantuml.graphic.USymbol;
import net.sourceforge.plantuml.graphic.color.ColorParser;
import net.sourceforge.plantuml.graphic.color.ColorType;
import net.sourceforge.plantuml.graphic.color.Colors;
import net.sourceforge.plantuml.utils.UniqueSequence;

public class CommandPackage extends SingleLineCommand2 {

	public CommandPackage() {
		super(getRegexConcat());
	}

	private static RegexConcat getRegexConcat() {
		return new RegexConcat(//
				new RegexLeaf("^"), //
				new RegexLeaf("TYPE", "(package|together)"), //
				new RegexLeaf("[%s]+"), //
				new RegexLeaf("NAME", "([%g][^%g]+[%g]|[^#%s{}]*)"), //
				new RegexLeaf("AS", "(?:[%s]+as[%s]+([\\p{L}0-9_.]+))?"), //
				new RegexLeaf("[%s]*"), //
				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
				new RegexLeaf("[%s]*"), //
				new RegexLeaf("URL", "(" + UrlBuilder.getRegexp() + ")?"), //
				new RegexLeaf("[%s]*"), //
				color().getRegex(), //
				new RegexLeaf("[%s]*\\{$"));
	}

	private static ColorParser color() {
		return ColorParser.simpleColor(ColorType.BACK);
	}

	@Override
	protected CommandExecutionResult executeArg(AbstractEntityDiagram diagram, RegexResult arg) {
		final Code code;
		final String display;
		final String name = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("NAME", 0));
		if (arg.get("AS", 0) == null) {
			if (name.length() == 0) {
				code = Code.of("##" + UniqueSequence.getValue());
				display = null;
			} else {
				code = Code.of(name);
				display = code.getFullName();
			}
		} else {
			display = name;
			code = Code.of(arg.get("AS", 0));
		}
		final IGroup currentPackage = diagram.getCurrentGroup();
		final IEntity p = diagram.getOrCreateGroup(code, Display.getWithNewlines(display), GroupType.PACKAGE,
				currentPackage);
		final String stereotype = arg.get("STEREOTYPE", 0);
		final USymbol type = USymbol.getFromString(arg.get("TYPE", 0));
		if (type == USymbol.TOGETHER) {
			p.setUSymbol(type);
		} else if (stereotype != null) {
			final USymbol usymbol = USymbol.getFromString(stereotype);
			if (usymbol == null) {
				p.setStereotype(new Stereotype(stereotype));
			} else {
				p.setUSymbol(usymbol);
			}
		}

		final String urlString = arg.get("URL", 0);
		if (urlString != null) {
			final UrlBuilder urlBuilder = new UrlBuilder(diagram.getSkinParam().getValue("topurl"), ModeUrl.STRICT);
			final Url url = urlBuilder.getUrl(urlString);
			p.addUrl(url);
		}

		final Colors colors = color().getColor(arg, diagram.getSkinParam().getIHtmlColorSet());
		p.setColors(colors);

		return CommandExecutionResult.ok();
	}

}