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package net.sourceforge.plantuml.project.lang;

import net.sourceforge.plantuml.annotation.DuplicateCode;
import net.sourceforge.plantuml.project.DaysAsDates;
import net.sourceforge.plantuml.project.Failable;
import net.sourceforge.plantuml.project.GanttDiagram;
import net.sourceforge.plantuml.project.core.TaskInstant;
import net.sourceforge.plantuml.project.time.Day;
import net.sourceforge.plantuml.regex.IRegex;
import net.sourceforge.plantuml.regex.RegexConcat;
import net.sourceforge.plantuml.regex.RegexLeaf;
import net.sourceforge.plantuml.regex.RegexOptional;
import net.sourceforge.plantuml.regex.RegexResult;

public class ComplementIntervalsSmart extends AbstractComplementTaskInstant {

	@DuplicateCode(reference = "ComplementBeforeOrAfterOrAtTaskStartOrEnd")
	public IRegex toRegex(String suffix) {
		final DayPattern dayPattern1 = new DayPattern("1");
		return new RegexConcat( //
				dayPattern1.toRegex(), //
				Words.exactly(Words.TO), //
				RegexLeaf.spaceZeroOrMore(), //
				//
				new RegexOptional(new RegexConcat( //
						new RegexLeaf("COMPLEMENT_NB1" + suffix, "(\\d+)"), //
						RegexLeaf.spaceOneOrMore(), //
						new RegexLeaf("COMPLEMENT_WORKING1" + suffix, "(working[%s]+)?"),
						new RegexLeaf("COMPLEMENT_DAY_OR_WEEK1" + suffix, "(day|week)s?"),
						new RegexOptional(new RegexConcat(//
								Words.exactly(Words.AND), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("COMPLEMENT_NB2" + suffix, "(\\d+)"), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("COMPLEMENT_WORKING2" + suffix, "(working[%s]+)?"),
								new RegexLeaf("COMPLEMENT_DAY_OR_WEEK2" + suffix, "(day|week)s?"))),
						RegexLeaf.spaceOneOrMore(), //
						Words.namedOneOf("COMPLEMENT_BEFORE_OR_AFTER" + suffix, Words.BEFORE, Words.AFTER))),
				//
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("COMPLEMENT_CODE_OTHER" + suffix, SubjectTask.REGEX_TASK_CODE + ".?s"), //
				RegexLeaf.spaceOneOrMore(), //
				Words.namedOneOf("COMPLEMENT_START_OR_END" + suffix, Words.START, Words.END));
	}

	public Failable getMe(GanttDiagram system, RegexResult arg, String suffix) {
		final Day d1 = new DayPattern("1").getDay(arg);

		final Failable i2 = getComplementTaskInstant(system, arg, suffix);

		if (i2.isFail())
			return Failable.error(i2.getError());

		return Failable.ok(new DaysAsDates(d1, i2.get().getInstantTheorical()));

	}

}