using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Template_Method
{
    /// <summary>

    /// MainApp startup class for Real-World 

    /// Template Design Pattern.
    /// 

//Definition
//Define the skeleton of an algorithm in an operation, deferring some steps to subclasses.
//Template Method lets subclasses redefine certain steps of an algorithm without changing the algorithm's structure.

    /// </summary>

    class MainApp
    {
        /// <summary>

        /// Entry point into console application.

        /// </summary>

        static void Main()
        {
            AbstractClass aA = new ConcreteClassA();
            aA.TemplateMethod();

            AbstractClass aB = new ConcreteClassB();
            aB.TemplateMethod();

            // Wait for user

            Console.ReadKey();
        }
    }

    /// <summary>

    /// The 'AbstractClass' abstract class

    /// </summary>

    abstract class AbstractClass
    {
        public abstract void PrimitiveOperation1();
        public abstract void PrimitiveOperation2();

        // The "Template method"

        public void TemplateMethod()
        {
            PrimitiveOperation1();
            PrimitiveOperation2();
            Console.WriteLine("");
        }
    }

    /// <summary>

    /// A 'ConcreteClass' class

    /// </summary>

    class ConcreteClassA : AbstractClass
    {
        public override void PrimitiveOperation1()
        {
            Console.WriteLine("ConcreteClassA.PrimitiveOperation1()");
        }
        public override void PrimitiveOperation2()
        {
            Console.WriteLine("ConcreteClassA.PrimitiveOperation2()");
        }
    }

    /// <summary>

    /// A 'ConcreteClass' class

    /// </summary>

    class ConcreteClassB : AbstractClass
    {
        public override void PrimitiveOperation1()
        {
            Console.WriteLine("ConcreteClassB.PrimitiveOperation1()");
        }
        public override void PrimitiveOperation2()
        {
            Console.WriteLine("ConcreteClassB.PrimitiveOperation2()");
        }
    }
}