package Exceptions;

// example class with possibility of throwing exceptions
public class Bunny{

    private String name;
    private int carrotcount;

    // technically each of these constructors could be interrupted by exceptions
    // because they use mutators that throw exceptions
    public Bunny() {
        setName("UNNAMED");
        setCarrotcount(0);
    }

    public Bunny(String name, int carrotcount) {
        this();
        setName(name);
        setCarrotcount(carrotcount);
    }
    
    // constructor that throws its own exception
    public Bunny (Bunny original) {
        if (original == null) {
            throw new IllegalArgumentException("Cannot clone null Bunny");
        } else {
            setName(original.getName());
            setCarrotcount(original.getCarrotcount());
        }
    }

    public String getName() {
        return name;
    }

    // throw exception if given invalid name
    public void setName(String name) {
        if (name == null) {
           // throw unchecked exception -- caller can try-catch for this, but isn't forced to
            throw new IllegalArgumentException("Bunny name cannot be null");
        } else if (name.length() == 0) {
            throw new IllegalArgumentException("Bunny name cannot be length 0)");
        } else {
            this.name = name;
        }
    }

    public int getCarrotcount() {
        return carrotcount;
    }

    // throw exception if given invalid number
    public void setCarrotcount(int carrotcount) {
        if (carrotcount >= 0) {
            this.carrotcount = carrotcount;
        } else {
            throw new IllegalArgumentException("Bunny can't have negative carrot count (" + carrotcount + ")");
        }
    }
    
    public Bunny clone() {
        return new Bunny(this);
    }

    // throw exception if we try to compare to anything but a non-null Bunny
    public boolean equals(Object other) {
        if (other == null || ! (other instanceof Bunny)) {
            throw new IllegalArgumentException("Bunny equality checked against null or non-Bunny");
        } else {
            Bunny temp = (Bunny)other;
            return getName().equals(temp.getName()) && getCarrotcount() == temp.getCarrotcount();
        }
    }
    
   
    
    @Override
    public String toString() {
        return "a bunny named " + getName() + " with " + getCarrotcount() + " carrots";
    }

}