/*
 * @(#)NationalMission.java
 *
 * Copyright 2010 Instituto Superior Tecnico
 * Founding Authors: Luis Cruz, Nuno Ochoa, Paulo Abrantes
 *
 *      https://fenix-ashes.ist.utl.pt/
 *
 *   This file is part of the Expenditure Tracking Module.
 *
 *   The Expenditure Tracking Module is free software: you can
 *   redistribute it and/or modify it under the terms of the GNU Lesser General
 *   Public License as published by the Free Software Foundation, either version
 *   3 of the License, or (at your option) any later version.
 *
 *   The Expenditure Tracking Module is 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with the Expenditure Tracking Module. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package module.mission.domain;

import module.finance.util.Money;
import module.geography.domain.Country;
import module.workflow.util.ClassNameBundle;

import org.joda.time.DateTime;
import org.joda.time.Hours;
import org.joda.time.Interval;

@ClassNameBundle(bundle = "MissionResources")
/**
 *
 * @author Luis Cruz
 *
 */
public class NationalMission extends NationalMission_Base {

    private static final Money MAX_DAILY_ACCOMMODATION_VALUE = new Money("50");

    public NationalMission(final NationalMissionProcess nationalMissionProcess, final String location, final DateTime daparture,
            final DateTime arrival, final String objective, final Boolean isCurrentUserAParticipant,
            final Boolean grantOwnerEquivalence) {
        super();
        setMissionProcess(nationalMissionProcess);
        setMissionInformation(location, daparture, arrival, objective, isCurrentUserAParticipant, grantOwnerEquivalence);
    }

    @Override
    public Country getCountry() {
        return MissionSystem.getInstance().getCountry();
    }

    @Override
    public double getFirstDayPersonelDayExpensePercentage(final PersonelExpenseItem personelExpenseItem) {
        double result = 0.0;
        final DateTime departure = personelExpenseItem.getStart();
        final DateTime arrival = personelExpenseItem.getEnd();

        if (!arrival.isAfter(departure)) {
            return Double.MAX_VALUE;
        }

        final Interval interval = new Interval(departure, arrival);
        // Check if include lunch period
        if (overlapsMeal(interval, departure, 13)) {
            result += 0.25;
        }
        // Check if include dinner period
        if (overlapsMeal(interval, departure, 20)) {
            result += 0.25;
        }
        final DateTime accomodationThreashold = departure.withTime(22, 0, 0, 0);
        // Check if include accomodations
        if (personelExpenseItem instanceof FullPersonelExpenseItem && arrival.isAfter(accomodationThreashold)) {
            result += 0.5;
        }
        return result;
    }

    @Override
    public double getMiddleDayPersonelDayExpensePercentage(final PersonelExpenseItem personelExpenseItem) {
        return personelExpenseItem instanceof FullPersonelExpenseItem ? 1 : 0.5;
    }

    @Override
    public double getLastDayPersonelDayExpensePercentage(final PersonelExpenseItem personelExpenseItem) {
        double result = 0.0;
        final DateTime departure = personelExpenseItem.getStart();
        final DateTime arrival = personelExpenseItem.getEnd();
        if (!departure.toLocalDate().equals(arrival.toLocalDate())) {
            final Interval interval = new Interval(departure, arrival);
            // Check if include lunch period
            if (overlapsMeal(interval, arrival, 13)) {
                result += 0.25;
            }
            // Check if include dinner period
            if (overlapsMeal(interval, arrival, 20)) {
                result += 0.25;
            }
        }
        return result;
    }

    private boolean overlapsMeal(final Interval interval, final DateTime dateTime, final int hour) {
        final Interval mealTime = new Interval(dateTime.withTime(hour, 0, 0, 0), Hours.ONE);
        return interval.overlaps(mealTime);
    }

    @Override
    public int getNunberOfLunchesToDiscountOnFirstPersonelExpenseDay(final PersonelExpenseItem personelExpenseItem) {
        return personelExpenseItem.getStart().getHourOfDay() < 14 ? 1 : 0;
    }

    @Override
    public int getNunberOfLunchesToDiscountOnLastPersonelExpenseDay(final PersonelExpenseItem personelExpenseItem) {
        return personelExpenseItem.getEnd().getHourOfDay() > 12 ? 1 : 0;
    }

    @Override
    public String getDestinationDescription() {
        final Country country = getCountry();
        return country == null ? getLocation() : getLocation() + ", " + country.getName().getContent();
    }

    @Override
    protected boolean discountLunchDay(final DateTime dateTime) {
        if (super.discountLunchDay(dateTime)) {
            if (isFirstDay(dateTime)) {
                final Interval interval = new Interval(getDaparture(), dateTime.withTime(23, 59, 59, 0));
                return overlapsMeal(interval, dateTime, 13);
            } else if (isLastDay(dateTime)) {
                final Interval interval = new Interval(dateTime.withTime(0, 0, 0, 0), getArrival());
                return overlapsMeal(interval, dateTime, 13);
            }
            return true;
        }
        return false;
    }

    private boolean isFirstDay(final DateTime dateTime) {
        final DateTime departure = getDaparture();
        return matchesDay(departure, dateTime);
    }

    private boolean isLastDay(final DateTime dateTime) {
        final DateTime arrival = getArrival();
        return matchesDay(arrival, dateTime);
    }

    private boolean matchesDay(final DateTime dateTime1, final DateTime dateTime2) {
        return dateTime1.getYear() == dateTime2.getYear() && dateTime1.getDayOfYear() == dateTime2.getDayOfYear();
    }

    @Override
    public Money getMaxDailyAccomodationValue() {
        return MAX_DAILY_ACCOMMODATION_VALUE;
    }

}