/* ========================================================================
 * 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.note.sequence;

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.command.BlocLines;
import net.sourceforge.plantuml.command.Command;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.CommandMultilines2;
import net.sourceforge.plantuml.command.MultilinesStrategy;
import net.sourceforge.plantuml.command.SingleLineCommand2;
import net.sourceforge.plantuml.command.note.SingleMultiFactoryCommand;
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.graphic.color.ColorParser;
import net.sourceforge.plantuml.sequencediagram.AbstractMessage;
import net.sourceforge.plantuml.sequencediagram.EventWithDeactivate;
import net.sourceforge.plantuml.sequencediagram.GroupingLeaf;
import net.sourceforge.plantuml.sequencediagram.NotePosition;
import net.sourceforge.plantuml.sequencediagram.NoteStyle;
import net.sourceforge.plantuml.sequencediagram.SequenceDiagram;

public final class FactorySequenceNoteOnArrowCommand implements SingleMultiFactoryCommand {

	private RegexConcat getRegexConcatMultiLine() {
		return new RegexConcat(new RegexLeaf("^[%s]*"), //
				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
				new RegexLeaf("[%s]+"), //
				new RegexLeaf("POSITION", "(right|left)[%s]*"), //
				ColorParser.exp1(), //
				new RegexLeaf("URL", "[%s]*(" + UrlBuilder.getRegexp() + ")?"), //
				new RegexLeaf("$"));
	}

	private RegexConcat getRegexConcatSingleLine() {
		return new RegexConcat(new RegexLeaf("^[%s]*"), //
				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
				new RegexLeaf("[%s]+"), //
				new RegexLeaf("POSITION", "(right|left)[%s]*"), //
				ColorParser.exp1(), //
				new RegexLeaf("URL", "[%s]*(" + UrlBuilder.getRegexp() + ")?"), //
				new RegexLeaf("[%s]*:[%s]*"), //
				new RegexLeaf("NOTE", "(.*)"), //
				new RegexLeaf("$"));
	}

	public Command createSingleLine() {
		return new SingleLineCommand2(getRegexConcatSingleLine()) {

			@Override
			protected CommandExecutionResult executeArg(final SequenceDiagram system, RegexResult arg) {
				return executeInternal(system, arg, BlocLines.getWithNewlines(arg.get("NOTE", 0)));
			}

		};
	}

	public Command createMultiLine(boolean withBracket) {
		return new CommandMultilines2(getRegexConcatMultiLine(),
				MultilinesStrategy.KEEP_STARTING_QUOTE) {

			@Override
			public String getPatternEnd() {
				return "(?i)^[%s]*end[%s]?note$";
			}

			public CommandExecutionResult executeNow(final SequenceDiagram system, BlocLines lines) {
				final RegexResult line0 = getStartingPattern().matcher(StringUtils.trin(lines.getFirst499()));
				lines = lines.subExtract(1, 1);
				lines = lines.removeEmptyColumns();
				return executeInternal(system, line0, lines);
			}

		};
	}

	private CommandExecutionResult executeInternal(SequenceDiagram system, final RegexResult line0, BlocLines lines) {
		final EventWithDeactivate m = system.getLastEventWithDeactivate();
		if (m instanceof AbstractMessage || m instanceof GroupingLeaf) {
			final NotePosition position = NotePosition.valueOf(StringUtils.goUpperCase(line0.get("POSITION", 0)));
			Url url = null;
			if (line0.get("URL", 0) != null) {
				final UrlBuilder urlBuilder = new UrlBuilder(system.getSkinParam().getValue("topurl"), ModeUrl.STRICT);
				url = urlBuilder.getUrl(line0.get("URL", 0));
			}

			final NoteStyle style = NoteStyle.getNoteStyle(line0.get("STYLE", 0));
			if (m instanceof AbstractMessage) {
				((AbstractMessage) m).setNote(lines.toDisplay(), position, style, line0.get("COLOR", 0), url);
			} else {
				((GroupingLeaf) m).setNote(lines.toDisplay(), position, style, line0.get("COLOR", 0), url);
			}
		}

		return CommandExecutionResult.ok();
	}

}