/* ========================================================================
 * 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.descdiagram.command;

import net.sourceforge.plantuml.FontParam;
import net.sourceforge.plantuml.LineLocation;
import net.sourceforge.plantuml.OptionFlags;
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.classdiagram.ClassDiagram;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.SingleLineCommand2;
import net.sourceforge.plantuml.command.regex.IRegex;
import net.sourceforge.plantuml.command.regex.RegexConcat;
import net.sourceforge.plantuml.command.regex.RegexLeaf;
import net.sourceforge.plantuml.command.regex.RegexOptional;
import net.sourceforge.plantuml.command.regex.RegexOr;
import net.sourceforge.plantuml.command.regex.RegexResult;
import net.sourceforge.plantuml.cucadiagram.Code;
import net.sourceforge.plantuml.cucadiagram.Display;
import net.sourceforge.plantuml.cucadiagram.IEntity;
import net.sourceforge.plantuml.cucadiagram.ILeaf;
import net.sourceforge.plantuml.cucadiagram.Ident;
import net.sourceforge.plantuml.cucadiagram.LeafType;
import net.sourceforge.plantuml.cucadiagram.Stereotype;
import net.sourceforge.plantuml.descdiagram.DescriptionDiagram;
import net.sourceforge.plantuml.graphic.HtmlColor;
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;

public class CommandCreateElementParenthesis extends SingleLineCommand2<ClassDiagram> {

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

	private static IRegex getRegexConcat() {
		return RegexConcat.build(CommandCreateElementParenthesis.class.getName(), RegexLeaf.start(), //
				new RegexLeaf("\\(\\)[%s]+"), //
				color2().getRegex(), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexOr(//
						new RegexLeaf("CODE1", CommandCreateElementFull.CODE_WITH_QUOTE), //
						new RegexConcat(//
								new RegexLeaf("DISPLAY2", CommandCreateElementFull.DISPLAY), //
								new RegexOptional( //
										new RegexConcat( //
												RegexLeaf.spaceOneOrMore(), //
												new RegexLeaf("STEREOTYPE2", "(\\<\\<.+\\>\\>)")//
										)), //
								RegexLeaf.spaceZeroOrMore(), //
								new RegexLeaf("as"), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("CODE2", CommandCreateElementFull.CODE)), //
						new RegexConcat(//
								new RegexLeaf("CODE3", CommandCreateElementFull.CODE), //
								new RegexOptional( //
										new RegexConcat( //
												RegexLeaf.spaceOneOrMore(), //
												new RegexLeaf("STEREOTYPE3", "(\\<\\<.+\\>\\>)") //
										)), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("as"), //
								RegexLeaf.spaceZeroOrMore(), //
								new RegexLeaf("DISPLAY3", CommandCreateElementFull.DISPLAY)), //
						new RegexConcat(//
								new RegexLeaf("DISPLAY4", CommandCreateElementFull.DISPLAY_WITHOUT_QUOTE), //
								new RegexOptional( //
										new RegexConcat( //
												RegexLeaf.spaceOneOrMore(), //
												new RegexLeaf("STEREOTYPE4", "(\\<\\<.+\\>\\>)") //
										)), //
								RegexLeaf.spaceZeroOrMore(), //
								new RegexLeaf("as"), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("CODE4", CommandCreateElementFull.CODE)) //
				), //
				new RegexOptional( //
						new RegexConcat( //
								RegexLeaf.spaceZeroOrMore(), //
								new RegexLeaf("STEREOTYPE", "(\\<\\<.+\\>\\>)") //
						)), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("URL", "(" + UrlBuilder.getRegexp() + ")?"), //
				RegexLeaf.spaceZeroOrMore(), //
				color().getRegex(), RegexLeaf.end());
	}

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

	private static ColorParser color2() {
		return ColorParser.simpleColor(ColorType.BACK, "COLOR2");
	}

//	private static final String CODE_CORE = "[\\p{L}0-9_.]+|\\(\\)[%s]*[\\p{L}0-9_.]+|\\(\\)[%s]*[%g][^%g]+[%g]|:[^:]+:|\\([^()]+\\)|\\[[^\\[\\]]+\\]";
//	public static final String CODE = "(" + CODE_CORE + ")";
//	public static final String CODE_WITH_QUOTE = "(" + CODE_CORE + "|[%g].+?[%g])";
//
//	private static final String DISPLAY_CORE = "[%g].+?[%g]|:[^:]+:|\\([^()]+\\)|\\[[^\\[\\]]+\\]";
//	public static final String DISPLAY = "(" + DISPLAY_CORE + ")";
//	public static final String DISPLAY_WITHOUT_QUOTE = "(" + DISPLAY_CORE + "|[\\p{L}0-9_.]+)";

	@Override
	final protected boolean isForbidden(CharSequence line) {
		if (line.toString().matches("^[\\p{L}0-9_.]+$")) {
			return true;
		}
		return false;
	}

	@Override
	protected CommandExecutionResult executeArg(ClassDiagram diagram, LineLocation location, RegexResult arg) {
		String codeRaw = arg.getLazzy("CODE", 0);
		final String displayRaw = arg.getLazzy("DISPLAY", 0);
		final String symbol = "interface";
		final LeafType type;
		final USymbol usymbol;

		type = LeafType.DESCRIPTION;
		usymbol = USymbol.getFromString(symbol, diagram.getSkinParam());

		final String idShort = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(codeRaw);
		final Ident ident = diagram.buildLeafIdent(idShort);
		final Code code = diagram.V1972() ? ident : diagram.buildCode(idShort);
		if (!diagram.V1972() && diagram.isGroup(code)) {
			return CommandExecutionResult.error("This element (" + code.getName() + ") is already defined");
		}
		if (diagram.V1972() && diagram.isGroupStrict(ident)) {
			return CommandExecutionResult.error("This element (" + ident.getName() + ") is already defined");
		}
		String display = displayRaw;
		if (display == null) {
			display = code.getName();
		}
		display = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(display);
		final String stereotype = arg.getLazzy("STEREOTYPE", 0);
		if (existsWithBadType3(diagram, code, ident, type, usymbol)) {
			return CommandExecutionResult.error("This element (" + code.getName() + ") is already defined");
		}
		final IEntity entity = diagram.getOrCreateLeaf(ident, code, type, usymbol);
		entity.setDisplay(Display.getWithNewlines(display));
		entity.setUSymbol(usymbol);
		if (stereotype != null) {
			entity.setStereotype(new Stereotype(stereotype, diagram.getSkinParam().getCircledCharacterRadius(),
					diagram.getSkinParam().getFont(null, false, FontParam.CIRCLED_CHARACTER),
					diagram.getSkinParam().getIHtmlColorSet()));
		}

		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);
			entity.addUrl(url);
		}

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

		final HtmlColor lineColor = diagram.getSkinParam().getIHtmlColorSet().getColorIfValid(arg.get("LINECOLOR", 1));
		if (lineColor != null) {
			colors = colors.add(ColorType.LINE, lineColor);
		}
		entity.setColors(colors);

		// entity.setSpecificColorTOBEREMOVED(ColorType.BACK,
		// diagram.getSkinParam().getIHtmlColorSet().getColorIfValid(arg.get("COLOR",
		// 0)));
		return CommandExecutionResult.ok();
	}

	public static boolean existsWithBadType3(AbstractEntityDiagram diagram, Code code, Ident ident, LeafType type,
			USymbol usymbol) {
		if (diagram.V1972()) {
			if (diagram.leafExistSmart(ident) == false) {
				return false;
			}
			final ILeaf other = diagram.getLeafSmart(ident);
			if (other.getLeafType() != type) {
				return true;
			}
			if (usymbol != null && other.getUSymbol() != usymbol) {
				return true;
			}
			return false;
		} else {
			if (diagram.leafExist(code) == false) {
				return false;
			}
			final ILeaf other = diagram.getLeaf(code);
			if (other.getLeafType() != type) {
				return true;
			}
			if (usymbol != null && other.getUSymbol() != usymbol) {
				return true;
			}
			return false;
		}
	}

	private char getCharEncoding(final String codeRaw) {
		return codeRaw != null && codeRaw.length() > 2 ? codeRaw.charAt(0) : 0;
	}
}
