/* 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 org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
import org.dive4elements.artifactdatabase.state.Facet;
import org.dive4elements.river.artifacts.D4EArtifact;
import org.dive4elements.river.artifacts.StaticWKmsArtifact;
import org.dive4elements.river.artifacts.WINFOArtifact;
import org.dive4elements.river.artifacts.model.FacetTypes;
import org.dive4elements.river.artifacts.model.WKms;
import org.dive4elements.river.artifacts.model.WQKms;
import org.dive4elements.river.jfree.RiverAnnotation;
import org.dive4elements.river.jfree.StickyAxisAnnotation;
import org.dive4elements.river.jfree.StyledXYSeries;

import org.dive4elements.river.utils.RiverUtils;

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

import org.apache.log4j.Logger;
import org.jfree.data.xy.XYSeries;
import org.w3c.dom.Document;


/**
 * An OutGenerator that generates discharge curves.
 *
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class ComputedDischargeCurveGenerator
extends      DischargeCurveGenerator
implements   FacetTypes
{
    /** The logger used in this generator. */
    private static Logger logger =
        Logger.getLogger(ComputedDischargeCurveGenerator.class);

    public static final String I18N_CHART_TITLE =
        "chart.computed.discharge.curve.title";

    public static final String I18N_CHART_SUBTITLE =
        "chart.computed.discharge.curve.subtitle";

    public static final String I18N_YAXIS_LABEL =
        "chart.computed.discharge.curve.yaxis.label";

    public static final String I18N_CHART_TITLE_DEFAULT = "Abflusskurve";
    public static final String I18N_YAXIS_LABEL_DEFAULT = "W [NN + m]";
    public static final String I18N_MAINVALUES_Q_LABEL = "Q (Haupt- und Extremwerte)";
    public static final String I18N_MAINVALUES_W_LABEL = "W (Haupt- und Extremwerte)";


    /** Trivial Constructor. */
    public ComputedDischargeCurveGenerator () {
        super();
    }


    @Override
    protected String getDefaultChartTitle() {
        return msg(I18N_CHART_TITLE, I18N_CHART_TITLE_DEFAULT);
    }


    @Override
    protected String getDefaultChartSubtitle() {
        double[] dist = getRange();

        Object[] args = new Object[] {
            getRiverName(),
            dist[0]
        };

        return msg(I18N_CHART_SUBTITLE, "", args);
    }


    @Override
    protected String getDefaultYAxisLabel(int pos) {
        D4EArtifact flys = (D4EArtifact) master;

        String unit = RiverUtils.getRiver(flys).getWstUnit().getName();

        return msg(I18N_YAXIS_LABEL, I18N_YAXIS_LABEL_DEFAULT, new Object[] { unit });
    }


    /**
     * Process data, build up plot.
     */
    @Override
    public void doOut(
        ArtifactAndFacet artifactFacet,
        Document         attr,
        boolean          visible
    ) {
        String name = artifactFacet.getFacetName();

        logger.debug("ComputedDischargeCurveGenerator.doOut: " + name);

        if (name == null) {
            logger.warn("Broken facet in computed discharge out generation.");
            return;
        }

        //XXX DEAD CODE // Facet facet = artifactFacet.getFacet();

        if (name.equals(COMPUTED_DISCHARGE_Q)) {
            doQOut((WQKms) artifactFacet.getData(context), artifactFacet, attr, visible);
        }
        else if (name.equals(STATIC_WQ)) {
            doWQOut(artifactFacet.getData(context), artifactFacet, attr, visible);
        }
        else if (name.equals(STATIC_WQ_ANNOTATIONS)) {
            doWQAnnotations(
                artifactFacet.getData(context),
                artifactFacet,
                attr,
                visible);
        }
        else if (name.equals(COMPUTED_DISCHARGE_MAINVALUES_Q)
                || name.equals(MAINVALUES_Q)
                || name.equals(COMPUTED_DISCHARGE_MAINVALUES_W)
                || name.equals(MAINVALUES_W)
        ) {
            doAnnotations((RiverAnnotation)
                artifactFacet.getData(context), artifactFacet, attr, visible);
        }
        else if (name.equals(STATIC_WKMS_INTERPOL) || name.equals(HEIGHTMARKS_POINTS)) {
            doWAnnotations(
                artifactFacet.getData(context),
                artifactFacet,
                attr,
                visible);
        }
        else if (name.equals(STATIC_WKMS)) {
            doWAnnotations(
                artifactFacet.getData(context),
                artifactFacet,
                attr,
                visible);
        }
        else if (FacetTypes.IS.MANUALPOINTS(name)) {
            doPoints(artifactFacet.getData(context),
                artifactFacet,
                attr, visible, YAXIS.W.idx);
        }
        else if (name.equals(DISCHARGE_CURVE)) {
            doDischargeOut(
                (WINFOArtifact) artifactFacet.getArtifact(),
                artifactFacet.getData(context),
                artifactFacet.getFacetDescription(),
                attr,
                visible);
        }
        else {
            logger.warn("Unknown facet type for computed discharge: " + name);
            return;
        }
    }


    /**
     * Add WQ Data to plot.
     * @param wqkms data as double[][]
     */
    protected void doWQOut(
        Object           wqkms,
        ArtifactAndFacet aaf,
        Document         theme,
        boolean          visible
    ) {
        logger.debug("ComputedDischargeCurveGenerator: doWQOut");
        double [][] data = (double [][]) wqkms;

        XYSeries series = new StyledXYSeries(aaf.getFacetDescription(), theme);
        StyledSeriesBuilder.addPoints(series, data, true);

        addAxisSeries(series, YAXIS.W.idx, visible);
    }


    /**
     * Add Q-Series to plot.
     * @param wqkms actual data
     * @param theme theme to use.
     */
    protected void doQOut(
        WQKms            wqkms,
        ArtifactAndFacet aaf,
        Document         theme,
        boolean          visible
    ) {
        logger.debug("ComputedDischargeCurveGenerator: doWQOut");
        XYSeries series = new StyledXYSeries(aaf.getFacetDescription(), theme);
        StyledSeriesBuilder.addPointsQW(series, wqkms);

        addAxisSeries(series, YAXIS.W.idx, visible);
    }


    /**
     * Add WQ-Annotations to plot.
     * @param wqkms actual data
     * @param theme theme to use.
     */
    protected void doWQAnnotations(
        Object   wqkms,
        ArtifactAndFacet aandf,
        Document theme,
        boolean  visible
    ) {
        List<StickyAxisAnnotation> xy = new ArrayList<StickyAxisAnnotation>();
        double [][] data = (double [][]) wqkms;
        for (int i = 0; i< data[0].length; i++) {
            // TODO we need linear interpolation?
            xy.add(new StickyAxisAnnotation(aandf.getFacetDescription(),
                (float) data[0][i], StickyAxisAnnotation.SimpleAxis.X_AXIS));
            xy.add(new StickyAxisAnnotation(aandf.getFacetDescription(),
                (float) data[1][i], StickyAxisAnnotation.SimpleAxis.Y_AXIS));
        }

        doAnnotations(new RiverAnnotation(aandf.getFacetDescription(), xy),
            aandf, theme, visible);
    }


    /**
     * Add W-Annotations to plot.
     * @param wqkms actual data (double[][]).
     * @param theme theme to use.
     */
    protected void doWAnnotations(
        Object   wqkms,
        ArtifactAndFacet aandf,
        Document theme,
        boolean  visible
    ) {
        Facet facet = aandf.getFacet();

        List<StickyAxisAnnotation> xy = new ArrayList<StickyAxisAnnotation>();
        // Try to find them as WKms as well...
        if (wqkms instanceof double[][]) {
            logger.debug("its double[][] time, baby");
            double [][] data = (double [][]) wqkms;
            // TODO Do we need interpolation?
            for (int i = 0; i< data[0].length; i++) {
                xy.add(new StickyAxisAnnotation(aandf.getFacetDescription(),
                    (float) data[1][i], StickyAxisAnnotation.SimpleAxis.Y_AXIS));
            }

            doAnnotations(new RiverAnnotation(facet.getDescription(), xy),
                aandf, theme, visible);
        }
        else {
            logger.debug("its wkms time, baby");
            WKms data = (WKms) wqkms;
            // Assume its WKms.
            // XXX DEAD CODE // double location = getRange()[0];
            double w = StaticWKmsArtifact.getWAtKmLin(data, getRange()[0]);
            xy.add(new StickyAxisAnnotation(aandf.getFacetDescription(),
              (float) w, StickyAxisAnnotation.SimpleAxis.Y_AXIS));

            doAnnotations(new RiverAnnotation(facet.getDescription(), xy),
                aandf, theme, visible);
        }
    }
}
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