Revenue.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.report.eao;

import java.util.*;
import java.util.Map.Entry;

import eu.ggnet.dwoss.rules.*;

import lombok.*;

/**
 * Container to handle a Revenue Result.
 * <p>
 * @author oliver.guenther
 */
@Value
public class Revenue {

    @ToString
    @EqualsAndHashCode
    public static class RevenueMargin {

        public double revenue;

        public double reportedRevenue;

        public double reportedPurchacePrice;

    }

    @Value
    public static class Key {

        private final SalesChannel channel;

        private final DocumentType type;

        private final TradeName contractor;

        /**
         * Creates or reuses an Instance of Key.
         * <p>
         * @param c          the channel
         * @param t          the documentType
         * @param contractor the contractor
         * @return a instance of Key and caches the instance.
         */
        public static Key valueOf(SalesChannel c, DocumentType t, TradeName contractor) {
            // TODO: Implent Cache :-)
            return new Key(c, t, contractor);
        }

    }

    private final Map<Key, RevenueMargin> details = new HashMap<>();

    {
        for (SalesChannel channel : SalesChannel.values()) {
            for (DocumentType type : DocumentType.values()) {
                for (TradeName contractor : TradeName.values()) {
                    details.put(new Key(channel, type, contractor), new RevenueMargin());
                }
            }
        }
    }

    public void addTo(SalesChannel channel, DocumentType type, TradeName contractor, double revenue, double reportedPrice, double purchacePrice) {
        Key k = new Key(channel, type, contractor);
        RevenueMargin rm = details.get(k);
        rm.revenue += revenue;
        rm.reportedRevenue += reportedPrice;
        rm.reportedPurchacePrice += purchacePrice;
    }

    public double sum() {
        double sum = 0;
        for (RevenueMargin value : details.values()) sum += value.revenue;
        return sum;
    }

    public double sumBy(DocumentType type) {
        double sum = 0;
        for (Entry<Key, RevenueMargin> entry : details.entrySet()) {
            if ( entry.getKey().getType() == type ) sum += entry.getValue().revenue;
        }
        return sum;
    }

    public double sumBy(DocumentType type, TradeName contractor) {
        double sum = 0;
        for (Entry<Key, RevenueMargin> entry : details.entrySet()) {
            if ( entry.getKey().getType() == type && entry.getKey().getContractor() == contractor ) sum += entry.getValue().revenue;
        }
        return sum;
    }

    public double sumBy(SalesChannel channel, DocumentType type) {
        return details.entrySet().stream()
                .filter(e -> e.getKey().getChannel() == channel && e.getKey().getType() == type)
                .mapToDouble(e -> e.getValue().revenue)
                .sum();
    }

    public double sumBy(TradeName contractor) {
        return details.entrySet().stream()
                .filter(e -> e.getKey().getContractor() == contractor)
                .mapToDouble(e -> e.getValue().revenue)
                .sum();
    }

    public double sumReportedRevenue() {
        return details.entrySet().stream().mapToDouble(e -> e.getValue().reportedRevenue).sum();
    }

    public double sumReportedRevenueBy(TradeName contractor) {
        return details.entrySet().stream()
                .filter(e -> e.getKey().getContractor() == contractor)
                .mapToDouble(e -> e.getValue().reportedRevenue)
                .sum();
    }

    public double sumReportedPurchasePrice() {
        return details.entrySet().stream().mapToDouble(e -> e.getValue().reportedPurchacePrice).sum();
    }

    public double sumReportedPurchasePriceBy(TradeName contractor) {
        return details.entrySet().stream()
                .filter(e -> e.getKey().getContractor() == contractor)
                .mapToDouble(e -> e.getValue().reportedPurchacePrice)
                .sum();
    }

}