package de.intevation.flys.artifacts.states.minfo;

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

import org.apache.log4j.Logger;

import de.intevation.artifactdatabase.state.Facet;
import de.intevation.artifacts.CallContext;
import de.intevation.artifacts.CallMeta;
import de.intevation.flys.artifacts.FLYSArtifact;
import de.intevation.flys.artifacts.access.BedQualityAccess;
import de.intevation.flys.artifacts.model.CalculationResult;
import de.intevation.flys.artifacts.model.DateRange;
import de.intevation.flys.artifacts.model.FacetTypes;
import de.intevation.flys.artifacts.model.minfo.BedBedQualityResult;
import de.intevation.flys.artifacts.model.minfo.BedDensityFacet;
import de.intevation.flys.artifacts.model.minfo.BedDiameterFacet;
import de.intevation.flys.artifacts.model.minfo.BedLoadBedQualityResult;
import de.intevation.flys.artifacts.model.minfo.BedPorosityFacet;
import de.intevation.flys.artifacts.model.minfo.BedQualityCalculation;
import de.intevation.flys.artifacts.model.minfo.BedQualityResult;
import de.intevation.flys.artifacts.model.minfo.BedloadDiameterFacet;
import de.intevation.flys.artifacts.resources.Resources;
import de.intevation.flys.artifacts.states.DefaultState;


public class BedQualityState extends DefaultState implements FacetTypes {

    private static final long serialVersionUID = 1L;

    private static final Logger logger = Logger
        .getLogger(BedQualityState.class);

    public static final String I18N_TOPLAYER = "bedquality.toplayer";
    public static final String I18N_SUBLAYER = "bedquality.sublayer";

    public static final String I18N_FACET_BED_POROSITY_TOPLAYER = "facet.bedquality.bed.porosity.toplayer";
    public static final String I18N_FACET_BED_POROSITY_SUBLAYER = "facet.bedquality.bed.porosity.sublayer";
    public static final String I18N_FACET_BED_DENSITY_TOPLAYER = "facet.bedquality.bed.density.toplayer";
    public static final String I18N_FACET_BED_DENSITY_SUBLAYER = "facet.bedquality.bed.density.sublayer";
    public static final String I18N_FACET_BED_DIAMETER_TOPLAYER = "facet.bedquality.bed.diameter.toplayer";
    public static final String I18N_FACET_BED_DIAMETER_SUBLAYER = "facet.bedquality.bed.diameter.sublayer";
    public static final String I18N_FACET_BEDLOAD_DIAMETER = "facet.bedquality.bedload.diameter";

    @Override
    public Object computeAdvance(FLYSArtifact artifact, String hash,
        CallContext context, List<Facet> facets, Object old) {
        logger.debug("BedQualityState.computeAdvance");

        List<Facet> newFacets = new ArrayList<Facet>();

        BedQualityAccess access = new BedQualityAccess(artifact);

        CalculationResult res = old instanceof CalculationResult ? (CalculationResult) old
            : new BedQualityCalculation().calculate(access);

        if (facets == null || res == null) {
            return res;
        }

        BedQualityResult[] results = (BedQualityResult[]) res.getData();

        if (results == null || results.length == 0) {
            logger.warn("Calculation computed no results!");
            return res;
        }

        generateFacets(context, newFacets, results, getID(), hash);
        logger.debug("Created " + newFacets.size() + " new Facets.");

        facets.addAll(newFacets);

        return res;
    }

    protected void generateFacets(CallContext context, List<Facet> newFacets,
        BedQualityResult[] results, String stateId, String hash) {
        logger.debug("BedQualityState.generateFacets");

        CallMeta meta = context.getMeta();

        for (int idx = 0; idx < results.length; idx++) {
            BedQualityResult result = results[idx];

            if (result instanceof BedBedQualityResult) {
                BedBedQualityResult data = (BedBedQualityResult) result;
                newFacets.add(new BedPorosityFacet(idx,
                    BED_QUALITY_POROSITY_TOPLAYER,
                    createPorosityTopLayerDescription(meta, data),
                    ComputeType.ADVANCE, stateId, hash));

                newFacets.add(new BedPorosityFacet(idx,
                    BED_QUALITY_POROSITY_SUBLAYER,
                    createPorositySubLayerDescription(meta, data),
                    ComputeType.ADVANCE, stateId, hash));

                newFacets.add(new BedDensityFacet(idx,
                    BED_QUALITY_SEDIMENT_DENSITY_TOPLAYER,
                    createDensityTopLayerDescription(meta, data),
                    ComputeType.ADVANCE, stateId, hash));

                newFacets.add(new BedDensityFacet(idx,
                    BED_QUALITY_SEDIMENT_DENSITY_SUBLAYER,
                    createDensitySubLayerDescription(meta, data),
                    ComputeType.ADVANCE, stateId, hash));

                newFacets.add(new BedloadDiameterFacet(idx,
                    BED_QUALITY_BED_DIAMETER_TOPLAYER,
                    createDiameterTopLayerDescription(meta, data),
                    ComputeType.ADVANCE, stateId, hash));

                newFacets.add(new BedloadDiameterFacet(idx,
                    BED_QUALITY_BED_DIAMETER_SUBLAYER,
                    createDiameterSubLayerDescription(meta, data),
                    ComputeType.ADVANCE, stateId, hash));
            }
            else if (result instanceof BedLoadBedQualityResult) {
                newFacets.add(new BedDiameterFacet(idx,
                    BED_QUALITY_BEDLOAD_DIAMETER, createDiameterDescription(
                        meta, result), ComputeType.ADVANCE, stateId, hash));
            }
            else {
                logger.warn("unknown result object: " + result.getClass());
            }
        }
    }

    protected String createPorosityTopLayerDescription(CallMeta meta,
        BedBedQualityResult result) {
        DateRange range = result.getDateRange();
        Date from = range != null ? range.getFrom() : new Date();
        Date to = range != null ? range.getTo() : new Date();

        String toplayer = Resources.getMsg(meta, I18N_TOPLAYER, I18N_TOPLAYER);
        return Resources.getMsg(meta, I18N_FACET_BED_POROSITY_TOPLAYER,
            I18N_FACET_BED_POROSITY_TOPLAYER, new Object[] { from, to, toplayer });
    }

    protected String createPorositySubLayerDescription(CallMeta meta,
        BedBedQualityResult result) {
        DateRange range = result.getDateRange();
        Date from = range != null ? range.getFrom() : new Date();
        Date to = range != null ? range.getTo() : new Date();

        String sublayer = Resources.getMsg(meta, I18N_SUBLAYER, I18N_SUBLAYER);
        return Resources.getMsg(meta, I18N_FACET_BED_POROSITY_SUBLAYER,
            I18N_FACET_BED_POROSITY_SUBLAYER, new Object[] { from, to, sublayer });
    }

    protected String createDensityTopLayerDescription(CallMeta meta,
        BedBedQualityResult result) {
        DateRange range = result.getDateRange();
        Date from = range != null ? range.getFrom() : new Date();
        Date to = range != null ? range.getTo() : new Date();

        String toplayer = Resources.getMsg(meta, I18N_TOPLAYER, I18N_TOPLAYER);
        return Resources.getMsg(meta, I18N_FACET_BED_DENSITY_TOPLAYER,
            I18N_FACET_BED_DENSITY_TOPLAYER, new Object[] { from, to, toplayer });
    }

    protected String createDensitySubLayerDescription(CallMeta meta,
        BedBedQualityResult result) {
        DateRange range = result.getDateRange();
        Date from = range != null ? range.getFrom() : new Date();
        Date to = range != null ? range.getTo() : new Date();

        String sublayer = Resources.getMsg(meta, I18N_SUBLAYER, I18N_SUBLAYER);
        return Resources.getMsg(meta, I18N_FACET_BED_DENSITY_SUBLAYER,
            I18N_FACET_BED_DENSITY_SUBLAYER, new Object[] { from, to, sublayer });
    }

    protected String createDiameterTopLayerDescription(CallMeta meta,
        BedBedQualityResult result) {
        DateRange range = result.getDateRange();
        Date from = range != null ? range.getFrom() : new Date();
        Date to = range != null ? range.getTo() : new Date();

        String toplayer = Resources.getMsg(meta, I18N_TOPLAYER, I18N_TOPLAYER);

        return Resources.getMsg(meta, I18N_FACET_BED_DIAMETER_TOPLAYER,
            I18N_FACET_BED_DIAMETER_TOPLAYER, new Object[] { result.getType(),
                from, to, toplayer });
    }

    protected String createDiameterSubLayerDescription(CallMeta meta,
        BedBedQualityResult result) {
        DateRange range = result.getDateRange();
        Date from = range != null ? range.getFrom() : new Date();
        Date to = range != null ? range.getTo() : new Date();

        String sublayer = Resources.getMsg(meta, I18N_SUBLAYER, I18N_SUBLAYER);
        return Resources.getMsg(meta, I18N_FACET_BED_DIAMETER_SUBLAYER,
            I18N_FACET_BED_DIAMETER_SUBLAYER, new Object[] { result.getType(),
                from, to, sublayer });
    }

    protected String createDiameterDescription(CallMeta meta,
        BedQualityResult result) {
        return Resources.getMsg(meta, I18N_FACET_BEDLOAD_DIAMETER,
            I18N_FACET_BEDLOAD_DIAMETER, new Object[] { result.getType() });
    }
}
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