package shared.model;


import shared.enums.RoundingType;

/**
 * Represents a compound mark -  that is, either one or two individual marks which form a single compound mark.
 */
public class CompoundMark {

    /**
     * The ID of the compound mark.
     */
    private int id;

    /**
     * The name of the compound mark.
     */
    private String name;

    /**
     * The first mark in the compound mark.
     */
    private Mark mark1;

    /**
     * The second mark in the compound mark.
     */
    private Mark mark2;

    /**
     * The average coordinate of the compound mark.
     */
    private GPSCoordinate averageGPSCoordinate;

    /**
     * The side that the mark must be rounded on
     */
    private RoundingType roundingType;


    /**
     * Constructs a compound mark from a single mark.
     * @param id the id of the compound mark
     * @param name name of the compound mark
     * @param mark1 The individual mark that comprises this compound mark.
     */
    public CompoundMark(int id, String name, Mark mark1) {
        this.id = id;
        this.name = name;
        this.mark1 = mark1;
        this.averageGPSCoordinate = calculateAverage();

    }


    /**
     * Constructs a compound mark from a pair of marks.
     * @param id the id of the compound mark
     * @param name name of the compound mark
     * @param mark1 The first individual mark that comprises this compound mark.
     * @param mark2 The second individual mark that comprises this compound mark.
     */
    public CompoundMark(int id, String name, Mark mark1, Mark mark2) {
        this.id = id;
        this.name = name;
        this.mark1 = mark1;
        this.mark2 = mark2;
        this.averageGPSCoordinate = calculateAverage();

    }


    /**
     * Returns the ID of this compound mark.
     * @return The ID of this compound mark.
     */
    public int getId() {
        return id;
    }

    /**
     * Returns the name of this compound mark
     * @return The name of this compound mark.
     */
    public String getName() {
        return name;
    }

    /**
     * Returns the first mark of the compound mark.
     * @return The first mark of the compound mark.
     */
    public Mark getMark1() {
        return mark1;
    }

    /**
     * Returns the second mark of the compound mark.
     * @return The second mark of the compound mark.
     */
    public Mark getMark2() {
        return mark2;
    }


    /**
     * Returns the position of the first mark in the compound mark.
     * @return The position of the first mark in the compound mark.
     */
    public GPSCoordinate getMark1Position() {
        return mark1.getPosition();
    }

    /**
     * Returns the position of the second mark in the compound mark.
     * @return The position of the second mark in the compound mark.
     */
    public GPSCoordinate getMark2Position() {
        return mark2.getPosition();
    }


    /**
     * Returns the average coordinate of the compound mark.
     * @return The average coordinate of the compound mark.
     */
    public GPSCoordinate getAverageGPSCoordinate() {
        return averageGPSCoordinate;
    }


    /**
     * Calculates the average coordinate of the compound mark.
     * @return The average coordinate of the compound mark.
     */
    private GPSCoordinate calculateAverage() {

        //If the compound mark only contains one mark, the average is simply the first mark's position.
        if (this.mark2 == null) {
            return this.getMark1Position();
        }


        //Otherwise, calculate the average of both marks.
        GPSCoordinate averageCoordinate = GPSCoordinate.calculateAverageCoordinate(this.getMark1Position(), this.getMark2Position());

        return averageCoordinate;

    }

    /**
     * Used to get how this mark should be rounded
     * @return rounding type for mark
     */
    public RoundingType getRoundingType() {
        return roundingType;
    }

    /**
     * Used to set the type of rounding for this mark
     * @param roundingType rounding type to set
     */
    public void setRoundingType(RoundingType roundingType) {
        this.roundingType = roundingType;
    }
}