TopServerPlayers

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

namespace TopServerPlayers
{
    internal class Program
    {
        static void Main()
        {
            Game game = new Game();
            game.ShowTopPlayers();
        }
    }

    public class Game
    {
        private const string ExitCommand = "Exit";

        private readonly List<Player> _players;
        private readonly PlayerBase _playerBase;

        public Game()
        {
            _playerBase = new PlayerBase();
            _players = _playerBase.Fill();
        }

        public void ShowTopPlayers()
        {
            _playerBase.ShowPlayers(_players);

            bool isRuning = true;

            while (isRuning)
            {
                string typeSort = ProcessMenu();

                if (typeSort.ToLower() == ExitCommand.ToLower())
                {
                    isRuning = false;
                }
                else if (Validate(typeSort))
                {
                    List<Top> sortedPlayers = _playerBase.SelectTopPlayers(_players, typeSort);
                    _playerBase.ShowTopPlayers(sortedPlayers);
                }
            }
        }

        private string ProcessMenu()
        {
            Console.WriteLine($"\nSelect command: " +
                $"\nshow top level - {PlayerBase.LevelSortCommand}" +
                $"\nshow top strength - {PlayerBase.StrengthSortCommand}" +
                $"\n\"{ExitCommand}\" for exit");

            return Console.ReadLine();
        }

        private bool Validate(string typeSort)
        {
            if (typeSort == PlayerBase.LevelSortCommand)
            {
                return true;
            }
            else if (typeSort == PlayerBase.StrengthSortCommand)
            {
                return true;
            }

            Console.WriteLine("\nUnknown command. Press something..");
            Console.ReadKey();

            return false;
        }
    }

    public class PlayerBase
    {
        public const string LevelSortCommand = "1";
        public const string StrengthSortCommand = "2";

        public List<Player> Fill()
        {
            PlayerFactory factory = new PlayerFactory();
            List<Player> players = factory.Create();

            return players;
        }

        public void ShowPlayers(List<Player> players)
        {
            Console.WriteLine($"Name\t\tLevel\tStrength");

            foreach (Player player in players)
            {
                string tabulation = FixTabulation(player.Name);

                Console.WriteLine($"{player.Name}{tabulation}{player.Level}\t{player.Strength}");
            }
        }

        public void ShowTopPlayers(List<Top> players)
        {
            int currentPlace = 0;

            foreach (Top player in players)
            {
                if (currentPlace != player.Place)
                {
                    Console.WriteLine($"\nPlace {player.Place} ");
                    currentPlace = player.Place;
                }

                string tabulation = FixTabulation(player.Player.Name);

                Console.WriteLine($"{player.Player.Name}{tabulation}level: {player.Player.Level}\t strength: {player.Player.Strength}");
            }
        }

        public List<Top> SelectTopPlayers(List<Player> players, string typeSort)
        {
            int countRecords = 3;

            List<Top> selectedPlayers = new List<Top>();
            List<int> topCharacteristic = null;

            if (typeSort == LevelSortCommand)
            {
                topCharacteristic = players.Select(player => player.Level).Distinct().OrderByDescending(level => level).Take(countRecords).ToList();
            }
            else if (typeSort == StrengthSortCommand)
            {
                topCharacteristic = players.Select(player => player.Strength).Distinct().OrderByDescending(strength => strength).Take(countRecords).ToList();
            }

            foreach (Player player in players)
            {
                for (int i = 0; i < countRecords; i++)
                {
                    if (typeSort == LevelSortCommand)
                    {
                        if (player.Level == topCharacteristic[i])
                        {
                            selectedPlayers.Add(new Top(i + 1, player));
                        }
                    }
                    else if (typeSort == StrengthSortCommand)
                    {
                        if (player.Strength == topCharacteristic[i])
                        {
                            selectedPlayers.Add(new Top(i + 1, player));
                        }
                    }
                }
            }

            selectedPlayers = selectedPlayers.OrderBy(player => player.Place).ToList();

            return selectedPlayers;
        }

        private string FixTabulation(string line)
        {
            string tabulation = "\t";
            int maxLength = 7;

            if (line.Length <= maxLength)
            {
                tabulation += tabulation;
            }

            return tabulation;
        }
    }

    public class Top
    {
        public Top(int place, Player player)
        {
            Place = place;
            Player = player;
        }

        public int Place { get; private set; }
        public Player Player { get; private set; }
    }

    public class PlayerFactory
    {
        private readonly List<string> _names;
        private readonly Random _random;

        public PlayerFactory()
        {
            _random = new Random();

            _names = new List<string>{"Aleksandr", "Nikolaj", "Ivan", "Sergej", "Vladimir", "Mikhail", "Vasilij", "Aleksej", "Andrej",
                "Dmitrij", "Viktor", "Yurij", "Petr", "Anatolij", "Pavel", "Igor", "Evgenij", "Oleg", "Valerij", "Vitalij", "Grigorij",
                "Fedor", "Boris", "Gennadij", "Leonid", "Konstantin", "Vyacheslav", "Georgij", "Denis", "Valentin", "Maksim", "Vadim",
                "Roman", "Ilya", "Ruslan", "Stepan", "Semen", "Anton", "Eduard", "Stanislav"};
        }

        public List<Player> Create()
        {
            int playersCount = 20;
            List<Player> players = new List<Player>();

            for (int i = 0; i < playersCount; i++)
            {
                players.Add(new Player(GetName(), GetIntValue(), GetIntValue()));
            }

            return players;
        }

        public string GetName()
        {
            int maxValue = 99;

            return _names[_random.Next(_names.Count)] + _random.Next(maxValue+1);
        }

        public int GetIntValue()
        {
            int minValue = 1;
            int maxValue = 10;

            return _random.Next(minValue, maxValue + 1);
        }
    }

    public class Player
    {
        public Player(string name, int level, int strength)
        {
            Name = name;
            Level = level;
            Strength = strength;
        }

        public string Name { get; private set; }
        public int Level { get; private set; }
        public int Strength { get; private set; }
    }
}