using System;

​

namespace Northwind.SockShop.WebUI

{

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Single Responsiblity Principal Exercise");

            Console.WriteLine();

            var bestStudentCalculator = new BestStudentCalculator();

            //var mostImprovedStudentCalculator = new MostImprovedStudentCalculator();

            //var worstStudentCalculator = new WorstStudentCalculator();

            var awardsController = new StudentAwardsController(bestStudentCalculator);

            awardsController.Index();

        }

    }

    public class StudentAwardsController

    {

        private IStudentCalculator _studentCalculator;

        public StudentAwardsController(IStudentCalculator calculator)

        {

            _studentCalculator = calculator;

        }

        public void Index()

        {

            _studentCalculator.CalculateStudents(); 

        }

    }

    public interface IStudentCalculator

    {

        void CalculateStudents();

    }

    public class BestStudentCalculator : IStudentCalculator

    {

        public void CalculateStudents()

        {

            Console.WriteLine("Calculate best students.");

        }

    }

    public class WorstStudentCalculator : IStudentCalculator

    {

        public void CalculateStudents()

        {

            Console.WriteLine("Calculate worst students.");

        }

    }

    public class MostImprovedStudentCalculator : IStudentCalculator

    {

        public void CalculateStudents()

        {

            Console.WriteLine("Calculate most improved students.");

        }

    }

}