CSLight #36

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

namespace CSLight
{

    class Program
    {
        static void Main()
        {
            Aquarium aquarium = new Aquarium();
            aquarium.Start();
            Console.ReadKey();
        }
    }

    class Aquarium
    {
        private static Random _random = new Random();
        private List<Fish> _aquarium = new List<Fish>();

        public Aquarium()
        {
            int fishCount = _random.Next(1, 11);
            for (int i = 0; i < fishCount; i++)
            {
                _aquarium.Add(new Fish());
            }
        }

        public void Start()
        {
            int userChoice = 0;
            string userInput = null;

            while (userChoice != 3)
            {
                Console.WriteLine("1) Добавить рыбку\n2) Удалить рыбку\n3) Запустить симуляцию\n");

                userChoice = CheckInput(userChoice, userInput, 1, 3);

                switch (userChoice)
                {
                    case 1:
                        AddFish();
                        break;
                    case 2:
                        RemoveFish();
                        break;
                    case 3:
                        continue;
                }
            }

            while (_aquarium.Count > 0)
            {
                ShowInfo();
                Live();
                System.Threading.Thread.Sleep(1000);
            }

            Console.WriteLine("\n\nРыбки закончились :((");
        }

        private int CheckInput(int userChoice, string userInput, int minValue, int maxValue)
        {
            bool isInputInorrect = true;
            while (isInputInorrect)
            {
                Console.Write("Введите команду: ");
                userInput = Console.ReadLine();
                if (int.TryParse(userInput, out userChoice) && userChoice <= maxValue && userChoice >= minValue)
                    isInputInorrect = false;
            }

            return userChoice;
        }

        private void Live()
        {
            for (int i = 0; i < _aquarium.Count; i++)
            {
                _aquarium[i].SkipSecond();

                if (_aquarium[i].Health < 0)
                {
                    DeleteFish(i);
                    i -= 1;
                }
            }
        }

        private void DeleteFish(int id)
        {
            Console.WriteLine($"Рыбка {_aquarium[id].Name} умерла :(");
            _aquarium.RemoveAt(id);
        }

        private void ShowInfo()
        {
            Console.WriteLine("\n");
            for (int i = 0; i < _aquarium.Count; i++)
            {
                Console.WriteLine($"{i + 1}) Имя - {_aquarium[i].Name}, Здоровье - {_aquarium[i].Health}");
            }
            Console.WriteLine("\n");
        }

        private void AddFish()
        {
            Console.Write("Введите имя: ");
            string name = Console.ReadLine();
            _aquarium.Add(new Fish(name));
        }

        private void RemoveFish()
        {
            int deletedId = -1;
            string userInput;

            while (_aquarium.Count > 0 && (deletedId < 1 || deletedId >= _aquarium.Count + 1))
            {
                ShowInfo();
                Console.Write("Введите номер рыбы: ");
                userInput = Console.ReadLine();

                if (int.TryParse(userInput, out deletedId))
                    continue;
            }

            if (_aquarium.Count > 0)
                _aquarium.RemoveAt(deletedId - 1);
            else
                Console.WriteLine("\n\nНечего удалять");
        }
    }

    class Fish
    {
        private static Random _random = new Random();
        private static List<string> _namesVariants = new List<string>() { "Дора", "Ирбис", "Каунти", "Фин", "Плотти", "Шугард", "Пирс" };
        private int _damagePerSecond;

        public string Name { get; private set; }
        public int Health { get; private set; }

        public Fish()
        {
            Name = _namesVariants[_random.Next(0, _namesVariants.Count)];
            Health = _random.Next(70, 121);
            _damagePerSecond = _random.Next(4, 11);
        }

        public Fish(string name)
        {
            Name = name;
            Health = _random.Next(70, 121);
            _damagePerSecond = _random.Next(4, 11);
        }

        public void SkipSecond()
        {
            Health -= _damagePerSecond;
        }
    }
}