/**
 *
 */
package de.intevation.gnv.statistics;

import java.sql.SQLException;
import java.util.Collection;

import org.apache.log4j.Logger;

import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;

import de.intevation.gnv.geobackend.base.Result;
import de.intevation.gnv.state.describedata.KeyValueDescibeData;
import de.intevation.gnv.utils.DistanceCalculator;

/**
 * @author Tim Englich <tim.englich@intevation.de>
 * 
 */
public class HorizontalProfileStatistics extends TimeseriesStatistics {
    
    private static Logger log = Logger.getLogger(HorizontalProfileStatistics.class);

    private WKTReader wktReader = new WKTReader();
    
    private DistanceCalculator dc = new DistanceCalculator();
    
    private double distance = 0;
    
    /**
     * Constructor
     */
    public HorizontalProfileStatistics() {
        super();
    }

    /**
     * @see de.intevation.gnv.statistics.TimeseriesStatistics#calculateXOrdinateValue(de.intevation.gnv.geobackend.base.Result, de.intevation.gnv.geobackend.base.Result)
     */
    @Override
    protected double calculateXOrdinateValue(Result previousRow,Result row)
                     throws SQLException {
        try {
            Point start = (Point)this.wktReader.read(previousRow.getString("SHAPE"));
            Point current = (Point)this.wktReader.read(row.getString("SHAPE"));
            double delta = this.dc.calculateDistance(start, current);
            
            if (!Double.isNaN(delta)){
                this.distance = this.distance + delta;
            }
        } catch (ParseException e) {
            log.error(e,e);
        }
        return this.distance;
    }

    /**
     * @see de.intevation.gnv.statistics.TimeseriesStatistics#generateStatisticsName(java.lang.String, java.lang.String, java.lang.String, java.util.Collection, java.util.Collection, java.util.Collection)
     */
    @Override
    protected String generateStatisticsName(
                                            String break1,
                                            String break2,
                                            String break3,
                                            Collection<KeyValueDescibeData> parameters,
                                            Collection<KeyValueDescibeData> measurements,
                                            Collection<KeyValueDescibeData> dates) {
        return (this.findValueTitle(parameters, break1)+ " "+ 
                this.findValueTitle(measurements,break2)).trim()+" "+
                this.findValueTitle(dates,break3);
    }
    
    /**
     * @see de.intevation.gnv.statistics.TimeseriesStatistics#clearStatistics()
     */
    @Override
    protected void clearStatistics() {
        log.debug("HorizontalProfileStatistics.clearStatistics");
        super.clearStatistics();
        this.distance = 0;
    }

}