using System;

using System.Collections.Generic;

​

namespace JoKenPo

{

    class Program

    {

        public static void Main()

        {

            Console.WriteLine("Jo Ken Po - v0.1");

            var player1 = FetchPlay(1);

            var player2 = FetchPlay(2);

            var result = GetMessage(JoKenPo.Play(player1, player2));

            Console.WriteLine(result);

        }

​

        private static JoKenPoPlay FetchPlay(int playerNumber)

        {

            var isValid = false;

            do 

            {

                Console.WriteLine("Insira a jogada do Player " + playerNumber);

                var playersChoice = Console.ReadLine();

                if (Enum.TryParse(playersChoice, out JoKenPoPlay play))

                {

                    return play;

                }

                else

                {

                    Console.WriteLine("opção inválida");

                }

                continue;

            } while (!isValid);

            throw new Exception("an error has occured.");

        }

​

        private static string GetMessage(JoKenPoResult result) => result switch

        {

            JoKenPoResult.Draw => "Empate!",

            JoKenPoResult.Player1 => "O Player 1 ganhou!!",

            JoKenPoResult.Player2 => "O Player 2 ganhou!!",

            _ => "Ocorreu um erro." 

        };

    }

​

    public static class JoKenPo

    {

        private static Dictionary<JoKenPoPlay, JoKenPoPlay> winningPlays = new Dictionary<JoKenPoPlay, JoKenPoPlay>()

        {

            { JoKenPoPlay.Rock, JoKenPoPlay.Scissor },

            { JoKenPoPlay.Paper, JoKenPoPlay.Rock },

            { JoKenPoPlay.Scissor, JoKenPoPlay.Paper }

        };

​

​

        public static JoKenPoResult Play(JoKenPoPlay playerOne, JoKenPoPlay playerTwo)

        {

            if (playerOne == playerTwo)

                return JoKenPoResult.Draw;

            if (winningPlays[playerOne] == playerTwo)

                return JoKenPoResult.Player1;

            return JoKenPoResult.Player2; 

        }

    }

​

    public enum JoKenPoPlay

    {

        Rock,

        Paper,

        Scissor

    }

    public enum JoKenPoResult

    {

        Draw,

        Player1,

        Player2

    }

}