package pt.utl.ist.codeGenerator.database;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;

import net.sourceforge.fenixedu.domain.ExecutionSemester;
import net.sourceforge.fenixedu.domain.FrequencyType;
import net.sourceforge.fenixedu.domain.space.Room;
import net.sourceforge.fenixedu.util.DiaSemana;
import net.sourceforge.fenixedu.util.HourMinuteSecond;

import org.joda.time.DateTime;

import pt.utl.ist.codeGenerator.database.EvaluationRoomManager;

public class WrittenTestsRoomManager extends HashSet<Room> {

    private final Map<ExecutionSemester, EvaluationRoomManager> evaluationRoomManagerMap = new HashMap<ExecutionSemester, EvaluationRoomManager>();

    public DateTime getNextDateTime(final ExecutionSemester executionPeriod) {
	EvaluationRoomManager evaluationRoomManager = evaluationRoomManagerMap.get(executionPeriod);
	if (evaluationRoomManager == null) {
	    evaluationRoomManager = new EvaluationRoomManager(executionPeriod.getBeginDateYearMonthDay().plusMonths(1)
		    .toDateTimeAtMidnight(), executionPeriod.getEndDateYearMonthDay().minusDays(31).toDateTimeAtMidnight(), 120,
		    this);
	    evaluationRoomManagerMap.put(executionPeriod, evaluationRoomManager);
	}

	DateTime dateTime;
	Room oldRoom;

	do {
	    dateTime = evaluationRoomManager.getNextDateTime();
	    oldRoom = evaluationRoomManager.getNextOldRoom();

	} while (!oldRoom.isFree(dateTime.toYearMonthDay(), dateTime.plusMinutes(120).toYearMonthDay(), new HourMinuteSecond(
		dateTime.getHourOfDay(), dateTime.getMinuteOfHour(), dateTime.getSecondOfMinute()), dateTime.plusMinutes(120)
		.getHourOfDay() == 0 ? new HourMinuteSecond(dateTime.plusMinutes(119).getHourOfDay(), dateTime.plusMinutes(119)
		.getMinuteOfHour(), dateTime.plusMinutes(119).getSecondOfMinute()) : new HourMinuteSecond(dateTime.plusMinutes(
		120).getHourOfDay(), dateTime.plusMinutes(120).getMinuteOfHour(), dateTime.plusMinutes(120).getSecondOfMinute()),
		new DiaSemana(dateTime.getDayOfWeek() + 1), FrequencyType.DAILY, Boolean.TRUE, Boolean.TRUE));

	return dateTime;
    }

    public Room getNextOldRoom(final ExecutionSemester executionPeriod) {
	final EvaluationRoomManager evaluationRoomManager = evaluationRoomManagerMap.get(executionPeriod);
	return evaluationRoomManager.getNextOldRoom();
    }
}