//License: GPLv2 or later
//Copyright 2007 by Raphael Mack and others

package org.openstreetmap.josm.data.gpx;

import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.awt.Color;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.coor.EastNorth;
import org.openstreetmap.josm.data.coor.LatLon;

public class WayPoint extends WithAttributes implements Comparable<WayPoint>
{
    public final LatLon latlon;
    public final EastNorth eastNorth;
    public double time;
    public Color customColoring;
    public boolean drawLine;
    public int dir;

    public WayPoint(LatLon ll) {
        latlon = ll;
        eastNorth = Main.proj.latlon2eastNorth(ll);
    }

    @Override
    public String toString() {
        return "WayPoint (" + (attr.containsKey("name") ? attr.get("name") + ", " :"") + latlon.toString() + ", " + attr + ")";
    }

    /**
     * Convert the time stamp of the waypoint into seconds from the epoch
     */
    public final static SimpleDateFormat GPXTIMEFMT =
        new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS"); // ignore timezone
    public final static SimpleDateFormat GPXTIMEFMT2 =
        new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"); // ignore timezone

    public void setTime() {
        if (! attr.containsKey("time")) {
            return;
        }
        Date d = GPXTIMEFMT.parse(attr.get("time").toString(), new ParsePosition(0));
        if (d == null) {
            d = GPXTIMEFMT2.parse(attr.get("time").toString(), new ParsePosition(0));
        }
        if (d != null /* parsing ok */) {
            time = d.getTime() / 1000.0; /* ms => seconds */
        }
    }

    /**
     * Convert a time stamp of the waypoint from the <cmt> or <desc> field
     * into seconds from the epoch. Handles the date format as it is used by
     * Garmin handhelds. Does not overwrite an existing timestamp (!= 0.0).
     * A value of <time> fields overwrites values set with by method.
     * Does nothing if specified key does not exist or text cannot be parsed.
     *
     * @param key The key that contains the text to convert.
     */
    public void setGarminCommentTime(String key) {
        // do not overwrite time if already set
        if (time != 0.0) {
            return;
        }
        if (! attr.containsKey(key)) {
            return;
        }
        // example date format "18-AUG-08 13:33:03"
        SimpleDateFormat f = new SimpleDateFormat("dd-MMM-yy HH:mm:ss"); // Garmin wpts have no timezone
        Date d = f.parse(attr.get(key).toString(), new ParsePosition(0));
        if (d != null /* parsing OK */) {
            time = d.getTime() / 1000.0; /* ms => seconds */
        }
    }

    public int compareTo(WayPoint w)
    {
        return Double.compare(time, w.time);
    }
}