rbvs.product ExtendedProduct

package rbvs.product;

public class ExtendedProduct extends SimpleProduct {
    //Eldira Sesto, 11815163
    private ExtendedProduct savedState;

    public ExtendedProduct(ExtendedProduct product) {
        super(product.getname(), product.getPrice());
        savedState = product.savedState;//.deepCopy();
        //sta sa saved state
    }

    public ExtendedProduct(String name, float price) {
        super(name, price);
        //sta sa saved state
    }

    public void setName(String name){
        if(savedState == null){
            savedState = new ExtendedProduct(super.getname(), super.getPrice());
        }else {
            savedState.setName(super.getname());
        }
        super.setName(name);
    }

    public void setPrice(float price) throws IllegalArgumentException {
        if(price < 0) throw new IllegalArgumentException("Price cant be negative");

        if(savedState == null){
            savedState = new ExtendedProduct(super.getname(), super.getPrice());
        }
        else {
            savedState.setPrice(super.getPrice());
        }
        super.setPrice(price);
    }

    @Override
    public String toString() {
        String s = hasEffect() ? " Undo will have effect" : " Undo wont have effect";
        return super.toString() + s;
    }

    private boolean hasEffect(){
        boolean hasEffect = true;
        if(savedState == null) return false; //hmmm
        if(savedState.getname().equals(super.getname()) && savedState.getPrice() == super.getPrice()) hasEffect = false;
        return hasEffect;
    }

    public boolean undo(){
        if(!hasEffect()) return false;

        super.setName(savedState.getname());
        super.setPrice(savedState.getPrice());
        return true;
    }

    public ExtendedProduct deepCopy(){
        return new ExtendedProduct(getname(), getPrice());
    }
}