.java

import java.util.Objects;

public class Pizza implements Delivarable {
  public enum PizzaStatus {
    IN_PROGRESS,
    READY,
    DELIVERED;
  }

  private PizzaStatus pizzaStatus = PizzaStatus.IN_PROGRESS;
  private PizzaDeliveryStrategy strategy;


  public Pizza(PizzaDeliveryStrategy strategy){
    this.strategy = Objects.requireNotNull(strategy);
  }


  public void getStatus(PizzaStatus pizzaStatus){
    return this.pizzaStatus;
  }
  public void setStatus(PizzaStatus pizzaStatus){
    this.pizzaStatus = pizzaStatus;
  }

  @Override
  public void deliver(){
    if (isDeliverable()) {
        this.strategy.deliver(this);
        this.setStatus(PizzaStatus.DELIVERED);
    }
  }
}