package de.intevation.flys.artifacts;

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

import org.apache.log4j.Logger;

import org.w3c.dom.Document;

import de.intevation.artifactdatabase.state.Facet;

import de.intevation.artifacts.Artifact;
import de.intevation.artifacts.ArtifactFactory;
import de.intevation.artifacts.ArtifactNamespaceContext;
import de.intevation.artifacts.CallMeta;

import de.intevation.artifacts.common.utils.XMLUtils;

import de.intevation.flys.artifacts.model.FacetTypes;

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



/**
 * Artifact to store user-added points.
 */
public class GaugeDischargeArtifact
extends      WINFOArtifact
implements   FacetTypes
{
    /** The logger for this class. */
    private static Logger logger = Logger.getLogger(GaugeDischargeArtifact.class);

    /** The name of the artifact. */
    public static final String ARTIFACT_NAME = "historicalq";

    // TODO make this one globally available
    public static final String XPATH_DATA =
        "/art:action/art:ids/@value";

    /**
     * Trivial Constructor.
     */
    public GaugeDischargeArtifact() {
        logger.debug("GaugeDischargeArtifact.HistoricalQArtifact()");
    }


    /**
     * Gets called from factory, to set things up.
     * Especially, when loaded via datacage mechanisms, provide the
     * data document.
     * @param data filled with stuff from dc, if any.
     */
    @Override
    public void setup(
        String          identifier,
        ArtifactFactory factory,
        Object          context,
        CallMeta        callMeta,
        Document        data)
    {
        logger.debug("GaugeDischargeArtifact.setup");
        super.setup(identifier, factory, context, callMeta, data);
        String ids = XMLUtils.xpathString(
            data, XPATH_DATA, ArtifactNamespaceContext.INSTANCE);
        logger.debug("id for gaugedischarge: " + ids);
    }


    /** Return the name of this artifact. */
    public String getName() {
        return ARTIFACT_NAME;
    }


    /** Access state data storing the jsonstring with points. 
    public String getPointsData(String facetName) {
        return getDataAsString(facetName + ".data");
    }*/


    /**
     * Setup state and facet, copy from master artifact.
     */
    @Override
    protected void initialize(Artifact art, Object context, CallMeta meta) {
        logger.debug("GaugeDischargeArtifact.initialize");
        List<Facet> fs = new ArrayList<Facet>();
        FLYSArtifact artifact = (FLYSArtifact) art;

        // Get the location(s)
        importData(artifact, "ld_mode");
        importData(artifact, "ld_from");
        importData(artifact, "ld_to");
        importData(artifact, "ld_locations");

        DefaultState state = (DefaultState) getCurrentState(context);
        state.computeInit(this, hash(), context, meta, fs);
        if (!fs.isEmpty()) { 
            logger.debug("Facets to add in GaugeDischargeArtifact.initialize ."); 
            facets.put(getCurrentStateId(), fs); 
        } 
        else { 
            logger.debug("No facets to add in GaugeDischargeArtifact.initialize ("
                + state.getID() + ").");
        }
    }



    /**
     * Determines Facets initial disposition regarding activity (think of
     * selection in Client ThemeList GUI). This will be checked one time
     * when the facet enters a collections describe document.
     *
     * @param facetName name of the facet.
     * @param index     index of the facet.
     * @return 0 if not active
     */
    @Override
    public int getInitialFacetActivity(
        String outputName,
        String facetName,
        int index)
    {
        return 1;
    }
}
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