ShippingCostHelper.java

/* 
 * Copyright (C) 2014 GG-Net GmbH - Oliver Günther
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package eu.ggnet.dwoss.redtape;

import eu.ggnet.dwoss.rules.PositionType;
import eu.ggnet.dwoss.rules.ShippingCondition;
import eu.ggnet.dwoss.redtape.entity.Document;
import eu.ggnet.dwoss.redtape.entity.Position;
import eu.ggnet.dwoss.redtape.entity.PositionBuilder;

import java.util.SortedMap;

import org.apache.commons.lang3.StringUtils;

import eu.ggnet.dwoss.configuration.GlobalConfig;
import eu.ggnet.saft.core.Client;

import eu.ggnet.dwoss.mandator.MandatorSupporter;
import eu.ggnet.dwoss.mandator.api.service.ShippingCostService;

/**
 * A helper class that provides methods to modify shipping costs.
 *
 * @author pascal.perau
 * @author bastian.venz
 */
public class ShippingCostHelper {

    /**
     * Method to update/refresh the shipping cost of a {@link Document}.
     * <p>
     * @param doc               the {@link Document} entity.
     * @param shippingCondition the condition on which the shipping cost is calculated
     */
    public static void modifyOrAddShippingCost(Document doc, ShippingCondition shippingCondition) {
        int amountOfPositions = doc.getPositions(PositionType.UNIT).size();
        for (Position position : doc.getPositions(PositionType.PRODUCT_BATCH).values()) {
            //just quick for the warranty extension. sucks a bit if we ever wouldhave a refurbished id on another product batch
            if ( !StringUtils.isBlank(position.getRefurbishedId()) ) continue;
            amountOfPositions += position.getAmount();
        }
        double costs = 0;
        if ( Client.hasFound(ShippingCostService.class) )
            costs = Client.lookup(ShippingCostService.class).calculate(amountOfPositions, doc.getDossier().getPaymentMethod(), shippingCondition);
        SortedMap<Integer, Position> positions = doc.getPositions(PositionType.SHIPPING_COST);
        if ( positions.isEmpty() ) {
            PositionBuilder pb = new PositionBuilder().setType(PositionType.SHIPPING_COST)
                    .setName("Versandkosten").setDescription("Dies sind die Versandkosten von diesem Auftrag.")
                    .setPrice(costs).setTax(GlobalConfig.TAX).setAfterTaxPrice(costs + (costs * GlobalConfig.TAX))
                    .setBookingAccount(Client.lookup(MandatorSupporter.class).loadPostLedger().get(PositionType.SHIPPING_COST).orElse(-1));
            doc.append(pb.createPosition());
        } else {
            Position next = positions.values().iterator().next();
            next.setPrice(costs);
            next.setAfterTaxPrice(costs + (costs * GlobalConfig.TAX));
        }
    }

    /**
     * Method to remove the shipping cost from a {@link Document}.
     * <p>
     * @param doc the {@link Document} entity.
     */
    public static void removeShippingCost(Document doc) {
        for (Position position : doc.getPositions(PositionType.SHIPPING_COST).values()) doc.remove(position);
    }
}