package seng302.Model;

import org.geotools.referencing.Console;
import org.geotools.referencing.GeodeticCalculator;
import seng302.Constants;
import seng302.GPSCoordinate;
import seng302.GraphCoordinate;

/**
 * Created by cbt24 on 6/03/17.
 */
public class Leg {
    private String name; //nautical miles
    private double distance;


    private int legNumber;
    private GPSCoordinate startGPSCoordinate;
    private GPSCoordinate endGPSCoordinate;

    /**
     * Leg Initialiser
     * @param name Name of the Leg
     */
    public Leg(String name,  GPSCoordinate start, GPSCoordinate end, int number) {
        this.name = name;
        this.startGPSCoordinate = start;
        this.endGPSCoordinate = end;
        this.legNumber = number;
        this.distance = calculateDistance();
    }

    /**
     * Construction Method
     * @param name Name of the Leg
     */
    public Leg(String name, int number) {
        this.name = name;
        this.legNumber = number;
    }

    /**
     * Returns the name of the Leg
     * @return Returns the name of the Leg
     */
    public String getName() {
        return name;
    }

    /**
     * Get the distance in nautical miles
     * @return Returns the total distance of the leg.
     */
    public double getDistance() {
        return distance;
    }

    /**
     * Returns the coordinates in GPSCoordinate class of the boats starting coordinate.
     * @return Returns the coordinate of the start of the leg.
     * @see GPSCoordinate
     */
    public GPSCoordinate getStartGraphCoordinate() {
        return startGPSCoordinate;
    }

    /**
     * Returns the coordinates in a GPSCoordinate class that the boat ends on.
     * @return Returns the coordinate of the end of the leg.
     * @see GPSCoordinate
     */
    public GPSCoordinate getEndGraphCoordinate() {
        return endGPSCoordinate;
    }

    /**
     * Returns the leg number that the leg exists in the Race
     * @return Returns the Leg
     * @see Race
     */
    public int getLegNumber() {
        return legNumber;
    }

    /**
     * Calculates the distance that the legs are in nautical miles (1.852 km).
     * @return Returns the leg distance.
     */
    private double calculateDistance() {

        GeodeticCalculator calc = new GeodeticCalculator();
        calc.setStartingGeographicPoint(startGPSCoordinate.getLongitude(), startGPSCoordinate.getLatitude());
        calc.setDestinationGeographicPoint(endGPSCoordinate.getLongitude(), endGPSCoordinate.getLatitude());
        return calc.getOrthodromicDistance() / Constants.NMToMetersConversion;

    }
}