/* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
 * Software engineering by
 *  Björnsen Beratende Ingenieure GmbH
 *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
 *
 * 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.artifacts.sinfo.common;

import java.util.HashSet;
import java.util.Set;

import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
import org.dive4elements.artifactdatabase.state.Facet;
import org.dive4elements.artifacts.CallContext;
import org.dive4elements.river.artifacts.resources.Resources;
import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
import org.dive4elements.river.exports.DiagramGenerator;
import org.dive4elements.river.exports.StyledSeriesBuilder;
import org.dive4elements.river.jfree.StyledAreaSeriesCollection;
import org.dive4elements.river.jfree.StyledXYSeries;
import org.dive4elements.river.themes.ThemeDocument;

public final class TkhProcessor extends AbstractSInfoProcessor {

    private static String FACET_TKH = "sinfo_facet_tkh";

    private static final String I18N_AXIS_LABEL = "sinfo.chart.tkh.section.yaxis.label";

    private static final String I18N_FACET_TKH_DESCRIPTION = "sinfo.facet.tkh.description";

    private static final String SINFO_CHART_TKX_YAXIS_LABEL = "sinfo.chart.tkh.yaxis.label";

    private static final Set<String> HANDLED_FACET_TYPES = new HashSet<>();

    static {
        HANDLED_FACET_TYPES.add(FACET_TKH);
    }

    public TkhProcessor() {
        super(I18N_AXIS_LABEL, HANDLED_FACET_TYPES);
    }

    @Override
    protected String generateSeries(final DiagramGenerator generator, final ArtifactAndFacet bundle, final ThemeDocument theme, final boolean visible) {
        final CallContext context = generator.getCallContext();

        final String facetName = bundle.getFacetName();
        final AbstractSInfoCalculationResult<?> data = (AbstractSInfoCalculationResult<?>) bundle.getData(context);
        if (data == null) {
            // Check has been here before so we keep it for security reasons
            // this should never happen though.
            throw new IllegalStateException("Data is null for facet: " + facetName);
        }

        final StyledXYSeries seriesUp = new StyledXYSeries(bundle.getFacetDescription(), theme);
        final double[][] pointsUp = data.getTkhUpPoints();
        StyledSeriesBuilder.addPoints(seriesUp, pointsUp, true);

        // REMARK: we add " " because the description is misused as id, which must be unique.
        final StyledXYSeries seriesDown = new StyledXYSeries(bundle.getFacetDescription() + " ", theme);
        final double[][] pointsDown = data.getTkhDownPoints();
        StyledSeriesBuilder.addPoints(seriesDown, pointsDown, true);

        final StyledAreaSeriesCollection area = new StyledAreaSeriesCollection(theme);
        area.setMode(StyledAreaSeriesCollection.FILL_MODE.BETWEEN);
        area.addSeries(seriesUp);
        area.addSeries(seriesDown);

        generator.addAreaSeries(area, getAxisName(), visible);

        return null;
    }

    public static Facet createTkhFacet(final CallContext context, final String hash, final String id, final AbstractSInfoCalculationResult<?> result,
            final int index) {

        final String facetTkhDescription = Resources.getMsg(context.getMeta(), I18N_FACET_TKH_DESCRIPTION, I18N_FACET_TKH_DESCRIPTION,
                result.getLabel());
        // FIXME: doe not work yet...
        return new SInfoResultFacet(index, TkhProcessor.FACET_TKH, facetTkhDescription, TkhProcessor.SINFO_CHART_TKX_YAXIS_LABEL, ComputeType.ADVANCE, id,
                hash);
    }
}