/*
 * @(#)Announcement.java
 *
 * Copyright 2009 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 pt.ist.expenditureTrackingSystem.domain.announcements;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.apache.commons.collections.Predicate;
import org.joda.time.DateTime;

import pt.ist.expenditureTrackingSystem.domain.ExpenditureTrackingSystem;
import pt.ist.expenditureTrackingSystem.domain.organization.Supplier;
import pt.ist.expenditureTrackingSystem.domain.organization.Unit;

/**
 * 
 * @author Luis Cruz
 * @author Paulo Abrantes
 * 
 */
public abstract class Announcement extends Announcement_Base {

    protected Announcement() {
        super();
        setExpenditureTrackingSystem(ExpenditureTrackingSystem.getInstance());
        setCreationDate(new DateTime());
    }

    public abstract Set<Unit> getBuyingUnits();

    public abstract Supplier getSupplier();

    public abstract Unit getRequestingUnit();

    public static <T extends Announcement> List<T> getAnnouncements(Class<T> clazz) {
        List<T> announcements = new ArrayList<T>();
        for (Announcement announcement : ExpenditureTrackingSystem.getInstance().getAnnouncements()) {
            if (clazz.isAssignableFrom(announcement.getClass())) {
                announcements.add((T) announcement);
            }
        }
        return announcements;
    }

    public static <T extends Announcement> List<T> getAnnouncements(Class<T> clazz, Predicate predicate) {
        List<T> announcements = new ArrayList<T>();
        for (Announcement announcement : ExpenditureTrackingSystem.getInstance().getAnnouncements()) {
            if (clazz.isAssignableFrom(announcement.getClass()) && predicate.evaluate(announcement)) {
                announcements.add((T) announcement);
            }
        }
        return announcements;
    }

    @Deprecated
    public boolean hasDescription() {
        return getDescription() != null;
    }

    @Deprecated
    public boolean hasTotalPrice() {
        return getTotalPrice() != null;
    }

    @Deprecated
    public boolean hasCreationDate() {
        return getCreationDate() != null;
    }

    @Deprecated
    public boolean hasActive() {
        return getActive() != null;
    }

    @Deprecated
    public boolean hasExpenditureTrackingSystem() {
        return getExpenditureTrackingSystem() != null;
    }

    @Deprecated
    public boolean hasAcquisition() {
        return getAcquisition() != null;
    }

}