public class PizzaLager {
    public static void main(String[] args) {
        Pizza pizza = new CheesePizza();

        System.out.println("Pris:" + pizza.getCost() + "\n"
        + pizza.getTopping() + "\n\n\n");


        pizza = new LeggTilDressing(pizza);

        System.out.println("Pris:" + pizza.getCost() + "\n"
        + pizza.getTopping() + "\n\n\n");


        pizza = new LeggTilKylling(pizza);

        System.out.println("Pris:" + pizza.getCost() + "\n"
        + pizza.getTopping() + "\n\n\n");

        pizza = new LeggTilPepperoni(pizza);

        System.out.println("Pris:" + pizza.getCost() + "\n"
        + pizza.getTopping());
    }    
}



interface Pizza {
    double getCost();
    String getTopping();
}

class CheesePizza implements Pizza {

    @Override
    public double getCost() {
        return 150; //kostnad for en enkelt pizza med ost
    }

    @Override
    public String getTopping() {
        return "Ingredients:\n- Cheese"; //Hva toppingen best?r av
    }
}


abstract class PizzaDecorator implements Pizza {
    private final Pizza pizza;

    public PizzaDecorator(Pizza pizza) {
        this.pizza = pizza;
    }

    @Override
    public double getCost() {
        return pizza.getCost();
    }

    @Override
    public String getTopping() {
        return pizza.getTopping();
    }
}


class LeggTilKylling extends PizzaDecorator {

    public LeggTilKylling(Pizza pizza) {
        super(pizza);
    }

    @Override
    public double getCost() {
        return super.getCost() + 35;
    }

    @Override
    public String getTopping() {
        return super.getTopping() + "\n- Chicken";
    }
}


class LeggTilOst extends PizzaDecorator {

    public LeggTilOst(Pizza pizza) {
        super(pizza);
    }

    @Override
    public double getCost() {
        return super.getCost() + 20;
    }

    @Override
    public String getTopping() {
        return super.getTopping() + "\n- Extra Cheese";
    }
}


class LeggTilDressing extends PizzaDecorator {

    public LeggTilDressing(Pizza pizza) {
        super(pizza);
    }

    @Override
    public double getCost() {
        return super.getCost() + 15;
    }

    @Override
    public String getTopping() {
        return super.getTopping() + "\n- Garlic Sauce";
    }
}

class LeggTilPepperoni extends PizzaDecorator {

    public LeggTilPepperoni(Pizza pizza) {
        super(pizza);
    }

    @Override
    public double getCost() {
        return super.getCost() + 30;
    }

    @Override
    public String getTopping() {
        return super.getTopping() + "\n- Pepperoni";
    }
}