package de.intevation.flys.exports.fixings;

import java.awt.BasicStroke;
import java.awt.Color;

import org.apache.log4j.Logger;
import org.jfree.chart.plot.Marker;
import org.jfree.chart.plot.ValueMarker;
import org.jfree.data.xy.XYSeries;
import org.w3c.dom.Document;

import de.intevation.artifactdatabase.state.ArtifactAndFacet;
import de.intevation.flys.artifacts.model.FacetTypes;
import de.intevation.flys.artifacts.model.fixings.AnalysisPeriod;
import de.intevation.flys.artifacts.model.fixings.QWD;
import de.intevation.flys.exports.ChartGenerator;
import de.intevation.flys.jfree.FLYSAnnotation;
import de.intevation.flys.jfree.StyledAreaSeriesCollection;
import de.intevation.flys.jfree.StyledXYSeries;
import de.intevation.flys.utils.KMIndex;

public class FixLongitudinalSectionGenerator
extends AbstractFixGenerator
implements FacetTypes
{
    private static Logger logger =
            Logger.getLogger(FixLongitudinalSectionGenerator.class);

    public static final String I18N_CHART_TITLE =
            "chart.fixings.longitudinalsection.title";

    public static final String I18N_CHART_SUBTITLE =
            "chart.fixings.longitudinalsection.subtitle";

    public static final String I18N_XAXIS_LABEL =
            "chart.fixings.longitudinalsection.xaxis.label";

    public static final String I18N_CHART_TITLE_DEFAULT  =
            "Fixierungsanalyse";

    public static final String I18N_XAXIS_LABEL_DEFAULT  =
            "[km]";


    public static enum YAXIS {
        dW(0);
        public int idx;
        private YAXIS(int c) {
            idx = c;
        }
    }

    @Override
    public void doOut(ArtifactAndFacet aaf, Document doc, boolean visible) {
        String name = aaf.getFacetName();
        logger.debug("FixLongitudinalSectionGenerator: doOut: " + name);

        if (name.contains(FIX_SECTOR_AVERAGE_LS_DEVIATION)) {
            doSectorAverageDeviationOut(aaf, doc, visible);
        }
        else if (name.contains(FIX_SECTOR_AVERAGE_LS)) {
            doSectorAverageOut(aaf, doc, visible, YAXIS.dW.idx);
        }
        else if (name.equals(FIX_REFERENCE_EVENTS_LS)) {
            doReferenceEventsOut(aaf, doc, visible, YAXIS.dW.idx);
        }
        else if (name.equals(FIX_ANALYSIS_EVENTS_LS)) {
            doAnalysisEventsOut(aaf, doc, visible, YAXIS.dW.idx);
        }
        else if (name.equals(FIX_DEVIATION_LS)) {
            doReferenceDeviationOut(aaf, doc, visible);
        }
        else if (name.equals(LONGITUDINAL_ANNOTATION)) {
            doAnnotations(
                    (FLYSAnnotation) aaf.getData(context),
                    aaf,
                    doc,
                    visible);
        }
        else if (FacetTypes.IS.MANUALPOINTS(name)) {
            doPoints (aaf.getData(context),
                    aaf,
                    doc, visible, YAXIS.dW.idx);
        }
        else {
            logger.warn("Unknown facet name " + name);
            return;
        }
    }

    @SuppressWarnings("unchecked")
    protected void doSectorAverageDeviationOut(
            ArtifactAndFacet aaf,
            Document doc,
            boolean visible)
    {
        logger.debug("doSectorAverageOut" + aaf.getFacet().getIndex());

        int index = aaf.getFacet().getIndex();
        int sectorNdx = index & 3;

        KMIndex<AnalysisPeriod> kms =
                (KMIndex<AnalysisPeriod>)aaf.getData(context);

        if(kms == null) {
            return;
        }

        StyledAreaSeriesCollection area = new StyledAreaSeriesCollection(doc);
        XYSeries upper =
                new StyledXYSeries(aaf.getFacetDescription(), false, doc);
        XYSeries lower =
                new StyledXYSeries(aaf.getFacetDescription() + " ", false, doc);

        for (KMIndex.Entry<AnalysisPeriod> entry: kms) {
            double km = entry.getKm();
            AnalysisPeriod ap = entry.getValue();
            QWD qwd = ap.getQSectorAverages()[sectorNdx];
            double dev = ap.getQSectorStdDev(sectorNdx);
            logger.debug("std-dev: " + dev);
            if (qwd == null) {
                continue;
            }
            double deltaW = qwd.getDeltaW();
            double up = deltaW + dev;
            double lo = deltaW - dev;
            upper.add(km, up);
            lower.add(km, lo);
        }
        area.addSeries(upper);
        area.addSeries(lower);

        addAreaSeries(area, 0, visible);
    }


    @SuppressWarnings("unchecked")
    protected void doReferenceDeviationOut(
            ArtifactAndFacet aaf,
            Document doc,
            boolean visible)
    {
        logger.debug("doReferenceOut");

        KMIndex<double[]> kms =
                (KMIndex<double[]>)aaf.getData(context);

        if(kms == null) {
            return;
        }

        StyledAreaSeriesCollection area = new StyledAreaSeriesCollection(doc);
        XYSeries upper =
                new StyledXYSeries(aaf.getFacetDescription(), false, doc);
        XYSeries lower =
                new StyledXYSeries(aaf.getFacetDescription() + " ", false, doc);


        for (KMIndex.Entry<double[]> entry: kms) {
            double km = entry.getKm();
            double[] devArray = entry.getValue();
            if (devArray == null) {
                continue;
            }
            double dev = devArray[0];
            double up = dev;
            double lo = -dev;
            upper.add(km, up, false);
            lower.add(km, lo, false);
        }
        area.addSeries(upper);
        area.addSeries(lower);

        Marker marker = new ValueMarker(0);
        marker.setStroke(new BasicStroke(2));
        marker.setPaint(Color.BLACK);
        addValueMarker(marker);
        addAreaSeries(area, 0, visible);
    }

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

    @Override
    protected String getDefaultXAxisLabel() {
        return msg(I18N_XAXIS_LABEL, I18N_XAXIS_LABEL_DEFAULT);
    }

    @Override
    protected String getDefaultYAxisLabel(int pos) {
        return msg(I18N_DW_YAXIS_LABEL, I18N_DW_YAXIS_LABEL_DEFAULT);
    }

    @Override
    protected ChartGenerator.YAxisWalker getYAxisWalker() {
        return new YAxisWalker() {
            @Override
            public int length() {
                return YAXIS.values().length;
            }

            @Override
            public String getId(int idx) {
                YAXIS[] yaxes = YAXIS.values();
                return yaxes[idx].toString();
            }
        };
    }
}
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