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

import de.intevation.artifactdatabase.state.Facet;

import de.intevation.artifacts.CallContext;

import de.intevation.flys.artifacts.FLYSArtifact;

import de.intevation.flys.artifacts.access.FixRealizingAccess;

import de.intevation.flys.artifacts.model.CalculationResult;
import de.intevation.flys.artifacts.model.DataFacet;
import de.intevation.flys.artifacts.model.FacetTypes;
import de.intevation.flys.artifacts.model.ReportFacet;
import de.intevation.flys.artifacts.model.WQCKms;
import de.intevation.flys.artifacts.model.WQKms;

import de.intevation.flys.artifacts.model.fixings.FixRealizingCalculation;
import de.intevation.flys.artifacts.model.fixings.FixRealizingResult;
import de.intevation.flys.artifacts.model.fixings.FixWaterlevelFacet;

import de.intevation.flys.artifacts.states.DefaultState;

import java.util.List;

import org.apache.log4j.Logger;

/**
 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
 */
public class FixRealizingCompute extends DefaultState implements FacetTypes {

    /** The logger used in this class. */
    private static Logger logger = Logger.getLogger(FixRealizingCompute.class);

    /**
     * The default constructor that initializes an empty State object.
     */
    public FixRealizingCompute() {
    }

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

        CalculationResult res;

        FixRealizingAccess access =
            new FixRealizingAccess(artifact);

        if (old instanceof CalculationResult) {
            res = (CalculationResult)old;
        }
        else {
            FixRealizingCalculation calc = new FixRealizingCalculation(access);
            res = calc.calculate();
        }

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

        if (res.getReport().hasProblems()) {
            facets.add(new ReportFacet());
        }

        FixRealizingResult fixRes = (FixRealizingResult) res.getData();
        WQKms [] wqkms = fixRes != null ? fixRes.getWQKms() : new WQKms[0];

        for (int i = 0; i < wqkms.length; i++) {
            String nameW = null;
            String nameQ = null;

            if (access.isQ()) {
                nameQ = wqkms[i].getName();
                nameW = "W(" + nameQ + ")";
            }
            else {
                nameW = wqkms[i].getName();
                nameQ = "Q(" + nameW + ")";
            }

            Facet w = new FixWaterlevelFacet(
                i, LONGITUDINAL_W, nameW);

            Facet q = new FixWaterlevelFacet(
                i, LONGITUDINAL_Q, nameQ);

            facets.add(w);
            facets.add(q);

            if (wqkms[i] instanceof WQCKms) {
                String nameC = nameW.replace(
                    "benutzerdefiniert",
                    "benutzerdefiniert [korrigiert]");

                Facet c = new FixWaterlevelFacet(
                    i, DISCHARGE_LONGITUDINAL_C, nameC);

                facets.add(c);
            }
        }

        if (wqkms.length > 0) {
            facets.add(new DataFacet(CSV, "CSV data"));
            facets.add(new DataFacet(WST, "WST data"));
        }

        return res;
    }
}
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