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.artifactdatabase.state.FacetActivity;
import de.intevation.artifactdatabase.state.State;
import de.intevation.artifacts.ArtifactFactory;
import de.intevation.artifacts.CallMeta;
import de.intevation.artifacts.common.utils.XMLUtils;
import de.intevation.flys.artifacts.model.FacetTypes;
import de.intevation.flys.artifacts.model.minfo.BedHeight;
import de.intevation.flys.artifacts.model.minfo.BedHeightFacet;
import de.intevation.flys.artifacts.model.minfo.BedHeightFactory;
import de.intevation.flys.artifacts.states.StaticState;

public class BedHeightsArtifact
extends      StaticFLYSArtifact
implements   FacetTypes
{
    /** The logger for this class. */
    private static Logger logger =
        Logger.getLogger(BedHeightsArtifact.class);

    private static final String NAME = "bedheights";

    static {
        // TODO: Move to configuration.
        FacetActivity.Registry.getInstance()
            .register(NAME, FacetActivity.INACTIVE);
    }

    public static final String STATIC_STATE_NAME =
        "state.additional_bedheights.static";

    /** Data Item name to know whether we are Heighmarks and reveive
     * some data slightly different. */
    public static final String DATA_HEIGHT_TYPE =
        "height_marks";

    /** One and only state to be in. */
    protected transient State state = null;


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

    @Override
    public String getName() {
        return NAME;
    }

    /**
     * Gets called from factory, to set things up.
     */
    @Override
    public void setup(
        String          identifier,
        ArtifactFactory factory,
        Object          context,
        CallMeta        callMeta,
        Document        data)
    {
        logger.debug("BedHeightsArtifact.setup");

        state = new StaticState(STATIC_STATE_NAME);

        if (logger.isDebugEnabled()) {
            logger.debug(XMLUtils.toString(data));
        }

        List<Facet> fs = new ArrayList<Facet>();
        String code = getDatacageIDValue(data);

        if (code != null) {
            String [] parts = code.split("-");

            if (parts.length >= 4) {
                if (parts[0].equals("bedheight")) {
                    addStringData("type", parts[1]);
                    addStringData("height_id", parts[2]);
                    addStringData("time", parts[3]);
                }
                int hId = Integer.parseInt(parts[2]);
                String bedHName = BedHeightFactory.getHeightName(parts[1], hId);

                Facet bedHFacet = new BedHeightFacet(
                    "bedheight",
                    bedHName);

                fs.add(bedHFacet);
                facets.put(state.getID(), fs);
            }
        }

        //spawnState();
        super.setup(identifier, factory, context, callMeta, data);
    }

    /**
     * Get a list containing the one and only State.
     * @param  context ignored.
     * @return list with one and only state.
     */
    @Override
    protected List<State> getStates(Object context) {
        ArrayList<State> states = new ArrayList<State>();
        states.add(getState());
        return states;
    }

    /**
     * Get the "current" state (there is but one).
     * @param cc ignored.
     * @return the "current" (only possible) state.
     */
    @Override
    public State getCurrentState(Object cc) {
        return getState();
    }


    /**
     * Get the only possible state.
     * @return the state.
     */
    protected State getState() {
        return getState(null, null);
    }


    /**
     * Get the state.
     * @param context ignored.
     * @param stateID ignored.
     * @return the state.
     */
    @Override
    protected State getState(Object context, String stateID) {
        return (state != null)
            ? state
            : new StaticState(STATIC_STATE_NAME);
    }

    /**
     * Get WKms from factory.
     * @param idx param is not needed (TODO?)
     * @return WKms according to parameterization (can be null);
     */
    public BedHeight getHeight() {
        return BedHeightFactory.getHeight(
            getDataAsString("type"),
            Integer.parseInt(getDataAsString("height_id")),
            Integer.parseInt(getDataAsString("time")));
    }

}