/*
 * This file is part of LibrePlan
 *
 * Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
 *                         Desenvolvemento Tecnolóxico de Galicia
 * Copyright (C) 2010-2011 Igalia, S.L.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.libreplan.business.test.calendars.entities;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.libreplan.business.workingday.IntraDayDate.PartialDay.wholeDay;

import java.util.List;

import org.joda.time.LocalDate;
import org.junit.Test;
import org.libreplan.business.calendars.entities.CalendarAvailability;
import org.libreplan.business.calendars.entities.CalendarData.Days;
import org.libreplan.business.calendars.entities.Capacity;
import org.libreplan.business.calendars.entities.ResourceCalendar;
import org.libreplan.business.workingday.EffortDuration;
import org.libreplan.business.workingday.IntraDayDate.PartialDay;
import org.libreplan.business.workingday.ResourcesPerDay;

/**
 * Tests for {@link ResourceCalendar}.
 *
 * @author Manuel Rego Casasnovas <mrego@igalia.com>
 */
public class ResourceCalendarTest {

    private static final Capacity capacityForEveryDay = Capacity.create(EffortDuration.hours(8)).overAssignableWithoutLimit();

    public static ResourceCalendar createBasicResourceCalendar(int capacity) {
        ResourceCalendar calendar = ResourceCalendar.create();
        calendar.setName("Test");
        for (Days each : Days.values()) {
            calendar.setCapacityAt(each, capacityForEveryDay);
        }
        calendar.setCapacity(capacity);
        return calendar;
    }

    public static ResourceCalendar createBasicResourceCalendar() {
        return createBasicResourceCalendar(1);
    }

    private static final LocalDate PAST = (new LocalDate()).minusMonths(1);

    private static final LocalDate FUTURE = (new LocalDate()).plusMonths(1);

    @Test
    public void testIsActive() {
        ResourceCalendar calendar = createBasicResourceCalendar();

        assertFalse(calendar.isActive(PAST));
        assertTrue(calendar.isActive(FUTURE));
    }

    @Test
    public void testGetWorkableHours() {
        ResourceCalendar calendar = createBasicResourceCalendar();

        assertThat(calendar.getCapacityOn(wholeDay(PAST)), equalTo(EffortDuration.zero()));
        assertThat(calendar.getCapacityOn(wholeDay(FUTURE)), equalTo(EffortDuration.hours(8)));
    }

    @Test
    public void getCapacityWithOverTimeIsMultipliedByTheCapacityOfTheResourceCalendar() {
        ResourceCalendar calendar = createBasicResourceCalendar(2);
        Capacity capacity = calendar.getCapacityWithOvertime(FUTURE);
        assertThat(capacity, equalTo(capacityForEveryDay.multiplyBy(2)));
    }

    @Test
    public void theCapacityEffortIsMultipliedByTheCapacityOfTheResourceCalendar() {
        ResourceCalendar calendar = createBasicResourceCalendar(2);
        EffortDuration duration = calendar.getCapacityOn(PartialDay.wholeDay(FUTURE));
        assertThat(duration, equalTo(capacityForEveryDay.getStandardEffort().multiplyBy(2)));
    }

    @Test
    public void asDurationOnDoesNotChangeWithTheCapacityOfTheResourceCalendar() {
        ResourceCalendar[] calendars =
                { createBasicResourceCalendar(), createBasicResourceCalendar(2), createBasicResourceCalendar(3) };

        for (ResourceCalendar each : calendars) {
            EffortDuration duration = each.asDurationOn(PartialDay.wholeDay(FUTURE), ResourcesPerDay.amount(1));
            assertThat(duration, equalTo(capacityForEveryDay.getStandardEffort()));
        }
    }

    @Test(expected = IllegalArgumentException.class)
    public void notAllowCreateCalendarAvailabilityInThePast() {
        ResourceCalendar calendar = createBasicResourceCalendar();

        CalendarAvailability calendarAvailability = CalendarAvailability.create(PAST, null);
        calendar.addNewCalendarAvailability(calendarAvailability);
    }

    @Test
    public void allowCreateCalendarAvailabilityInTheFuture() {
        ResourceCalendar calendar = createBasicResourceCalendar();

        CalendarAvailability calendarAvailability = CalendarAvailability.create(FUTURE, null);
        calendar.addNewCalendarAvailability(calendarAvailability);

        List<CalendarAvailability> calendarAvailabilities = calendar.getCalendarAvailabilities();
        assertThat(calendarAvailabilities.size(), equalTo(2));
        assertThat(calendarAvailabilities.get(0).getEndDate(), equalTo(FUTURE.minusDays(1)));
        assertThat(calendarAvailabilities.get(1).getStartDate(), equalTo(FUTURE));
        assertNull(calendarAvailabilities.get(1).getEndDate());
    }

}