package de.intevation.flys.artifacts.model;

import org.apache.log4j.Logger;

import de.intevation.flys.model.Gauge;


/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class Calculation6 extends Calculation {

    private static final Logger logger = Logger.getLogger(Calculation6.class);

    private int      mode;
    private int[]    timerange;
    private double[] values;


    public static final int MODE_W = 0;
    public static final int MODE_Q = 1;


    public Calculation6(int mode, int[] timerange, double[] values) {
        this.mode      = mode;
        this.timerange = timerange;
        this.values    = values;
    }


    public CalculationResult calculate(Gauge gauge) {
        if (!checkParameters() || gauge == null) {
            logger.warn("Parameters not valid for calculation.");

            return null;
        }

        if (logger.isDebugEnabled()) {
            debug();
        }

        logger.warn("TODO: IMPLEMENT ME");

        return null;
    }


    protected boolean checkParameters() {
        if (!(mode == MODE_W || mode == MODE_Q)) {
            logger.warn("Invalid mode '" + mode + "' for calculation.");
            return false;
        }

        if (timerange == null || timerange.length < 2) {
            logger.warn("Invalid timerange for calculation.");
            return false;
        }

        if (values == null || values.length == 0) {
            logger.warn("No values for W or Q specified.");
            return false;
        }

        return true;
    }


    /**
     * Writes the parameters used for this calculation to logger.
     */
    public void debug() {
        StringBuilder sb = new StringBuilder();
        for (double value: values) {
            sb.append(String.valueOf(value) + " ");
        }

        logger.debug("========== Calculation6 ==========");
        logger.debug("   Mode:         " + mode);
        logger.debug("   Timerange:    " + timerange[0] + " - " + timerange[1]);
        logger.debug("   Input values: " + sb.toString());
        logger.debug("==================================");
    }
}
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