builder C# example

Program.cs

/* Product */
class Pizza
{
    private string dough = "";   // тесто, корж
    private string sauce = "";   // соус
    private string topping = ""; // начинка

    public void SetDough(string dough)
    {
        this.dough = dough;
    }

    public void SetSauce(string sauce)
    {
        this.sauce = sauce;
    }

    public void SetTopping(string topping)
    {
        this.topping = topping;
    }
}

/* Abstract Builder */
abstract class PizzaBuilder
{
    protected Pizza pizza;

    public Pizza GetPizza()
    {
        return pizza;
    }

    public void CreateNewPizzaProduct()
    {
        pizza = new Pizza();
    }

    public abstract void BuildDough();

    public abstract void BuildSauce();

    public abstract void BuildTopping();
}

/* Concrete Builder #1 */
class HawaiianPizzaBuilder : PizzaBuilder
{
    public HawaiianPizzaBuilder()
    {
        Console.WriteLine("Hawaiian Pizza:");
    }

    public override void BuildDough()
    {
        pizza.SetDough("thick");
        Console.WriteLine("thick dough");
    }

    public override void BuildSauce()
    {
        pizza.SetSauce("mild"); // не острый
        Console.WriteLine("mild sause");
    }

    public override void BuildTopping()
    {
        pizza.SetTopping("ham + pineapple");
        Console.WriteLine("ham+pineapple topping");
    }
}

/* Concrete Builder #2 */
class SpicyPizzaBuilder : PizzaBuilder
{
    public SpicyPizzaBuilder()
    {
        Console.WriteLine("Spicy Pizza:");
    }

    public override void BuildDough()
    {
        pizza.SetDough("thin");
        Console.WriteLine("thin dough");
    }

    public override void BuildSauce()
    {
        pizza.SetSauce("hot"); // острый
        Console.WriteLine("hot sause");
    }

    public override void BuildTopping()
    {
        pizza.SetTopping("pepperoni + salami");
        Console.WriteLine("pepperoni+salami topping");
    }
}

/* Director */
class Waiter
{
    private PizzaBuilder pizzaBuilder;

    public void SetPizzaBuilder(PizzaBuilder pb)
    {
        pizzaBuilder = pb;
    }

    public Pizza GetPizza()
    {
        return pizzaBuilder.GetPizza();
    }

    public void ConstructPizza()
    {
        pizzaBuilder.CreateNewPizzaProduct();
        pizzaBuilder.BuildDough();
        pizzaBuilder.BuildSauce();
        pizzaBuilder.BuildTopping();
    }

    public void ConstructPizzaWithoutSauce() // для тех, кто хочет пиццу без соуса
    {
        pizzaBuilder.CreateNewPizzaProduct();
        pizzaBuilder.BuildDough();
        pizzaBuilder.BuildTopping();
    }
}

class Program
{
    static void Main()
    {
        var waiter = new Waiter();
        waiter.SetPizzaBuilder(new HawaiianPizzaBuilder());
        waiter.ConstructPizza();
        // waiter.ConstructPizzaWithoutSauce();

        var pizza = waiter.GetPizza();
    }
}