package org.dive4elements.river.artifacts.model;

import gnu.trove.TIntArrayList;

/**
 * This class represents a pool of data triples that consists of 'W', 'Q' and
 * 'Day' data.
 *
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class WQDay
extends      WQ
{
    protected TIntArrayList days;

    public WQDay() {
        super("");
        days = new TIntArrayList();
    }

    public WQDay(int capacity) {
        super(capacity);
        days = new TIntArrayList(capacity);
    }

    public WQDay(int [] days, double [] ws, double [] qs) {
        super(qs, ws, "");
        this.days = new TIntArrayList(days);
    }


    public void add(int day, double w, double q) {
        super.add(w, q);
        days.add(day);
    }


    public boolean isIncreasing() {
        int lo = getDay(0);
        int hi = getDay(size()-1);

        return lo < hi;
    }


    public int getDay(int idx) {
        return days.getQuick(idx);
    }

    @Override
    public void removeNaNs() {

        int dest = 0;
        int N = ws.size();

        for (int i = 0; i < N; ++i) {
            double wi = ws.getQuick(i);
            double qi = qs.getQuick(i);

            if (Double.isNaN(wi) || Double.isNaN(qi)) {
                continue;
            }

            days.setQuick(dest, days.getQuick(i));
            ws.setQuick(dest, wi);
            qs.setQuick(dest, qi);
            ++dest;
        }

        if (dest < N) {
            days.remove(dest, N-dest);
            ws  .remove(dest, N-dest);
            qs  .remove(dest, N-dest);
        }
    }
}
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