import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Random;

/**
 * A Class to hold info about rabbits 
 * Mostly as an illustration of comparable
 * @author gtowell
 * Created: Feb 2020
 * Modified: Oct 17, 2020
 */
public class Rabbit implements Comparable<Rabbit> {
    
    enum BreedEnum {
        DwarfDutch, Angora, FrenchLop
    }

    /** The breed */
    private final BreedEnum breed;
    /** An id */
    private final int iD;
    /** The rabbit's nickname: flopsy, mopsy, peter, etc */
    private final String nickname;

    /**
     * Create an instance of rabbit
     * @param breed the breed 
     * @param id an ID number
     * @param nn a stirng nickname.  If null, a random char set
     */
    public Rabbit(BreedEnum breed, int id, String nn) {
        this.breed = breed;
        this.iD = id;
        this.nickname = nn==null ? makeName() : nn;
    }

    /** 
     * Default Constructor.  
     * An angora rabbit with random id and name
     */
    @SuppressWarnings("unused")
    private Rabbit() {
        this.breed = BreedEnum.Angora;
        this.iD = (new Random()).nextInt(200000);
        this.nickname=makeName();
    }

    /**
     * Make a 7 lower case char random string.
     * @return a random string
     */
    private String makeName() { 
        Random r = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i=0; i<7; i++) {
            char c = (char)('a' + r.nextInt(26));
            sb.append(c);
        }
        return sb.toString();
    }

    /** How to determine if two rabbits are the same */
    public boolean equals(Rabbit otherRabbit) {
        return otherRabbit.getId()==iD;
    }

    public int getId() {
        return iD;
    }
    public String getNickName() {
        return nickname;
    }
    public BreedEnum getBreed() {
        return breed;
    }

    /** 
     * A String rep of a rabbit
     */
    public String toString() {
        return "[["+breed + " " + iD + " " + nickname + "]]";
    }

    /** Compare two rabbits */
    @Override
    public int compareTo(Rabbit o) {
        //return iD - o.getId();
        //return nickname.compareTo(o.getNickName());
        //return breed.toString().compareTo(o.getBreed().toString());
        Date date = new Date();   // given date
        Calendar calendar = GregorianCalendar.getInstance(); // creates a new calendar instance
        calendar.setTime(date);   // assigns calendar to given date 
        if (calendar.get(Calendar.HOUR_OF_DAY)>12) {
            return iD - o.getId();
        } else {
            return o.getId() - iD;
        }
    }
    public static void main(String[] args) {
        System.out.println("Hello rabbit");
    }
}