package de.intevation.flys.artifacts.access;

import gnu.trove.TIntArrayList;

import org.apache.log4j.Logger;

import de.intevation.flys.artifacts.FLYSArtifact;


public class SedimentLoadAccess
extends RiverAccess
{
    private static final Logger logger = Logger.getLogger(BedHeightAccess.class);

    private int[] singleIDs;
    private int[] epochIDs;

    private Double lowerKM;
    private Double upperKM;

    private String time;
    private String unit;

    public SedimentLoadAccess(FLYSArtifact artifact) {
        super(artifact);
    }

    public Double getLowerKM() {
        if (lowerKM == null) {
            lowerKM = getDouble("ld_from");
        }

        return lowerKM;
    }

    public Double getUpperKM() {
        if (upperKM == null) {
            upperKM = getDouble("ld_to");
        }

        return upperKM;
    }

    public String getYearEpoch() {
        if (time == null) {
            time =  getString("ye_select");
        }
        return time;
    }

    public int[] getPeriod() {
        if (getYearEpoch().equals("year") ) {
            Integer start = getInteger("start");
            Integer end = getInteger("end");
            if (start == null || end == null) {
                logger.warn("No 'start' or 'end' parameter specified!");
                return null;
            }

            return new int[]{start.intValue(), end.intValue()};
        }
        return null;
    }

    public int[][] getEpochs() {
        if (getYearEpoch().equals("epoch") ||
            getYearEpoch().equals("off_epoch")
        ) {
            String data = getString("epochs");

            if (data == null) {
                logger.warn("No 'epochs' parameter specified!");
                return null;
            }

            String[] parts = data.split(";");

            int[][] list = new int[parts.length][];

            for (int i = 0; i < parts.length; i++) {
                String[] values = parts[i].split(",");
                TIntArrayList ints = new TIntArrayList();
                try {
                    ints.add(Integer.parseInt(values[0]));
                    ints.add(Integer.parseInt(values[1]));
                    list[i] = ints.toNativeArray();
                }
                catch (NumberFormatException nfe) {
                    logger.warn("Cannot parse int from string: '" + values + "'");
                }
            }
            return list;
        }

        return null;
    }

    public String getUnit () {
        if (unit == null) {
            unit = getString("unit");
        }
        return unit;
    }
}
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