using System;

using System.Collections.Generic;

using System.Linq;

​

namespace Library

{

    public interface IRot

    {

        void Happy();

        void Angry();

        void Greetings();        

    }

    public class Dan : IRot

    {

        public void Happy()

        {

            Console.WriteLine("Dan: Yeah boi!! \n" );

        }

        public void Angry()

        {

            Console.WriteLine("Dan: Oh for fuck sake \n" );

        }

        public void Greetings()

        {

            Console.WriteLine("Dan: Oioioi let's rot \n" );

        }

    }

    public class Magee : IRot

    {

         public void Happy()

        {

            Console.WriteLine("Magee: JA! där satt den! \n" );

        }

        public void Angry()

        {

            Console.WriteLine("Magee: Men för ihelvete \n" );

        }

        public void Greetings()

        {

            Console.WriteLine("Magee: Moose in the Hoose, how are you doing? \n" );

        }

    }

    public class Program

    {

        public static IRot GetRotter(string rotType)

        {

            return rotType == "d" ? (IRot)new Dan() : (IRot)new Magee();        

        }

        public static void OutputResponse(IRot rotPot, string res)

        {

            switch(res)

            {

                case "h":

                    rotPot.Happy();

                    break;

                case "a":

                    rotPot.Angry();

                    break;

                case "g":

                    rotPot.Greetings();                     

                    break;

                default:

                    Console.WriteLine("You have selected an invalid statement");

                    break;

            }

        }

        public static void Main()

        {

            bool endApp = false;

            while (!endApp)

            { 

                Console.WriteLine("Plese select a rotter use:" );

                Console.WriteLine("d - Dan");

                Console.WriteLine("m - Magee");

                var rot = Console.ReadLine();

                var rotter = rot.ToLower();

                Console.WriteLine("Please select which mood the rotter is in" );

                Console.WriteLine("h - Happy");

                Console.WriteLine("a - Angry");

                Console.WriteLine("g - Greets you ");

                var mood = Console.ReadLine();

                var res = mood.ToLower();               

                var rotPot = GetRotter(rotter);

​

                Console.WriteLine("------------------------\n");

                OutputResponse(rotPot, res);

                Console.WriteLine("------------------------\n");

                Console.Write("Press 'n' and Enter to close the app, or press any other key and Enter to continue: ");

                if (Console.ReadLine() == "n") endApp = true;

​

            }

            return;

        }

    }

}

​