/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
 * Software engineering by Intevation GmbH
 *
 * 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.states;

import java.io.File;

import org.apache.log4j.Logger;
import org.dive4elements.artifacts.Artifact;
import org.dive4elements.artifacts.CallContext;
import org.dive4elements.artifacts.CallMeta;
import org.dive4elements.artifacts.common.utils.FileTools;
import org.dive4elements.artifacts.common.utils.XMLUtils;
import org.dive4elements.river.artifacts.D4EArtifact;
import org.dive4elements.river.artifacts.resources.Resources;
import org.dive4elements.river.utils.RiverUtils;
import org.w3c.dom.Element;

/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class ScenarioSelect extends DefaultState {

    /** The log that is used in this class. */
    private static Logger log = Logger.getLogger(ScenarioSelect.class);

    public static final String FIELD_MODE = "scenario";

    public static final String SCENARIO_CURRENT = "scenario.current";
    public static final String SCENARIO_POTENTIEL = "scenario.potentiel";
    public static final String SCENARIO_SCENRAIO = "scenario.scenario";

    public static final String[] SCENARIOS = { SCENARIO_CURRENT, SCENARIO_POTENTIEL, SCENARIO_SCENRAIO };

    @Override
    protected String getUIProvider() {
        return "";
    }

    @Override
    protected Element[] createItems(final XMLUtils.ElementCreator cr, final Artifact artifact, final String name, final CallContext context) {
        final CallMeta meta = context.getMeta();

        if (name.equals(FIELD_MODE)) {
            final Element[] scenarios = new Element[SCENARIOS.length];

            int i = 0;

            for (final String scenario : SCENARIOS) {
                scenarios[i++] = createItem(cr, new String[] { Resources.getMsg(meta, scenario, scenario), scenario });
            }

            return scenarios;
        } else {
            final D4EArtifact flys = (D4EArtifact) artifact;
            final String data = flys.getDataAsString(name);

            return new Element[] { createItem(cr, new String[] { Resources.getMsg(meta, name, name), data }) };
        }
    }

    // ist mit super identisch
    // @Override
    // protected Element createItem(XMLUtils.ElementCreator cr, Object obj) {
    // Element item = ProtocolUtils.createArtNode(cr, "item", null, null);
    // Element label = ProtocolUtils.createArtNode(cr, "label", null, null);
    // Element value = ProtocolUtils.createArtNode(cr, "value", null, null);
    //
    // String[] arr = (String[]) obj;
    //
    // label.setTextContent(arr[0]);
    // value.setTextContent(arr[1]);
    //
    // item.appendChild(label);
    // item.appendChild(value);
    //
    // return item;
    // }

    @Override
    public void endOfLife(final Artifact artifact, final Object callContext) {
        super.endOfLife(artifact, callContext);
        log.info("ScenarioSelect.endOfLife: " + artifact.identifier());

        final D4EArtifact flys = (D4EArtifact) artifact;
        removeDirectory(flys);
    }

    /**
     * Removes the directory and all its content where the required data and the
     * results of WSPLGEN are stored. Should be called in endOfLife().
     */
    // FIXME: I've seen this code somewhere else...
    protected void removeDirectory(final D4EArtifact artifact) {
        final String shapePath = RiverUtils.getXPathString(RiverUtils.XPATH_FLOODMAP_SHAPEFILE_DIR);

        final File artifactDir = new File(shapePath, artifact.identifier());

        if (artifactDir.exists()) {
            log.debug("Delete directory: " + artifactDir.getAbsolutePath());
            final boolean success = FileTools.deleteRecursive(artifactDir);
            if (!success) {
                log.warn("could not remove dir '" + artifactDir + "'");
            }
        } else {
            log.debug("There is no directory to remove.");
        }
    }

}
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