/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU AGPL (>=v3)
 * and comes with ABSOLUTELY NO WARRANTY! Check out the
 * documentation coming with Dive4Elements River for details.
 */

package org.dive4elements.river.exports;

import java.io.OutputStream;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;
import org.dive4elements.river.artifacts.D4EArtifact;
import org.dive4elements.river.artifacts.model.CalculationResult;
import org.dive4elements.river.artifacts.model.FlowVelocityData;
import org.dive4elements.river.utils.Formatter;
import org.dive4elements.river.utils.RiverUtils;

import au.com.bytecode.opencsv.CSVWriter;

/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class FlowVelocityExporter extends AbstractExporter {

    private static final Logger log = Logger.getLogger(FlowVelocityExporter.class);

    public static final String CSV_KM = "export.flow_velocity.csv.header.km";

    public static final String CSV_V_TOTAL = "export.flow_velocity.csv.header.v_total";

    public static final String CSV_V_MAIN = "export.flow_velocity.csv.header.v_main";

    public static final String CSV_TAU_MAIN = "export.flow_velocity.csv.header.tau_main";

    public static final String CSV_Q = "common.export.csv.header.q";

    public static final String CSV_LOCATIONS = "export.flow_velocity.csv.header.locations";

    protected List<FlowVelocityData[]> data;

    public FlowVelocityExporter() {
        this.data = new ArrayList<>();
    }

    @Override
    protected void addData(Object d) {
        if (d instanceof CalculationResult) {
            d = ((CalculationResult) d).getData();

            if (d instanceof FlowVelocityData[]) {
                log.debug("Add new data of type FlowVelocityData");
                this.data.add((FlowVelocityData[]) d);
            }
        }
    }

    @Override
    protected void writeCSVData(final CSVWriter writer) {
        log.info("FlowVelocityExporter.writeCSVData");
        log.debug("CSV gets " + this.data.size() + " FlowVelocityData objects.");

        writeCSVHeader(writer);

        for (final FlowVelocityData[] d : this.data) {
            data2CSV(writer, d);
        }
    }

    protected void writeCSVHeader(final CSVWriter writer) {
        writer.writeNext(new String[] { msg(CSV_KM, CSV_KM), msg(CSV_V_MAIN, CSV_V_MAIN), msg(CSV_V_TOTAL, CSV_V_TOTAL), msg(CSV_TAU_MAIN, CSV_TAU_MAIN),
                msg(CSV_Q, CSV_Q), msg(CSV_LOCATIONS, CSV_LOCATIONS) });
    }

    protected void data2CSV(final CSVWriter writer, final FlowVelocityData[] fData) {
        log.debug("Add next FlowVelocityData to CSV");

        final D4EArtifact flys = (D4EArtifact) this.master;

        for (final FlowVelocityData data : fData) {
            for (int i = 0, n = data.size(); i < n; i++) {
                final NumberFormat kmF = Formatter.getFlowVelocityKM(this.context);
                final NumberFormat valF = Formatter.getFlowVelocityValues(this.context);
                final NumberFormat qF = Formatter.getFlowVelocityQ(this.context);

                String vMain = "";
                String vTotal = "";

                if (data.getType().equals("main") || data.getType().equals("main_total")) {
                    vMain = valF.format(data.getVMain(i));
                }
                if (data.getType().equals("total") || data.getType().equals("main_total")) {
                    vTotal = valF.format(data.getVTotal(i));
                }
                writer.writeNext(new String[] { kmF.format(data.getKM(i)), vMain, vTotal, valF.format(data.getTauMain(i)),
                        qF.format(data.getQ(i)) + "=" + data.getZone(), RiverUtils.getLocationDescription(flys, data.getKM(i)), });
            }
        }
    }

    @Override
    protected void writePDF(final OutputStream out) {
        log.error("TODO: Implement FlowVelocityExporter.writePDF");
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :