Aquarium (5)

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

namespace Classes
{
    internal class Program
    {
        static void Main()
        {
            Aquarium aquarium = new Aquarium();
            aquarium.Live();
        }
    }

    public class Aquarium
    {
        public List<Fish> _fishes;
        public int _size;
        public Manager _manager;

        public Aquarium()
        {
            _size = 50;
            _fishes = new List<Fish>();
            _manager = new Manager();
           _manager.Fill(_fishes, _size);
        }

        public void Live()
        {
            int turn = 1;

            Console.WriteLine("Turn :" + turn++);
            _manager.ShowAllFishes(_fishes);

            bool isRunning = true;
            ConsoleKey menuLaunchKey = ConsoleKey.D0;
            string menuLaunch = "0";

            while (isRunning)
            {
                Console.WriteLine($"\nPress something for next turn... or {menuLaunch} for menu");

                if (Console.ReadKey().Key == menuLaunchKey)
                {
                    Console.Clear();
                    isRunning = _manager.LaunchMenu(_fishes);
                    continue;
                }

                Console.Clear();
                Console.WriteLine("Turn :" + turn++);

                _manager.GrowOldFishes(_fishes);
                _manager.KillFishes(_fishes, _size);
                _manager.RemoveFishes(_fishes, _size);
                _manager.ShowAllFishes(_fishes);
            }
        }
    }

    public class Manager
    {
        public bool LaunchMenu(List<Fish> fishes)
        {
            const string CommandAddFish = "1";
            const string CommandRemoveFish = "2";
            const string CommandShowFish = "3";
            const string CommandExitMenu = "4";
            const string CommandExit = "5";

            bool hasSelected = false;
            bool isRunning = true;

            while (hasSelected == false)
            {
                Console.Clear();
                Console.WriteLine($"Press {CommandAddFish} for add fish," +
                    $"\n {CommandRemoveFish} for remove," +
                    $"\n {CommandShowFish} for show," +
                    $"\n {CommandExitMenu} for exit the menu" +
                    $"\n or {CommandExit} for close aquarium");

                string userCommand = Console.ReadLine();

                switch (userCommand)
                {
                    case CommandAddFish:
                        IncreaseFishes(fishes);
                        break;
                    case CommandRemoveFish:
                        DecreaseFishes(fishes);
                        break;
                    case CommandShowFish:
                        Console.Clear();
                        ShowAllFishes(fishes);
                        Console.WriteLine("\nPress something..");
                        Console.ReadKey();
                        break;
                    case CommandExitMenu:
                        hasSelected = true;
                        break;
                    case CommandExit:
                        hasSelected = true;
                        isRunning = false;
                        break;
                    default:
                        Console.WriteLine("Wrong key");
                        break;
                }
            }

            return isRunning;
        }

        public void Fill(List<Fish> fishes, int aquariumSize)
        {
            int fishListCount = Characteristics.PresetCharacteristics.Count;
            int minOccupiedVolume = Characteristics.PresetCharacteristics.Min(fish => fish.OccupiedSize);

            for (int size = 0; size < aquariumSize;)
            {
                Characteristics currentCharacteristic = Characteristics.PresetCharacteristics[UserUtil.GenerateRandomNumber(fishListCount)];

                if (size + currentCharacteristic.OccupiedSize > aquariumSize)
                {
                    fishListCount = fishListCount > minOccupiedVolume ? fishListCount-- : minOccupiedVolume;
                    continue;
                }

                fishes.Add(new Fish(currentCharacteristic));
                size += currentCharacteristic.OccupiedSize;
            }
        }

        public void ShowAllFishes(List<Fish> fishes)
        {
            foreach (var fish in fishes)
            {
                Console.ForegroundColor = fish.Characteristics.Color;
                int minLeftPosition = 30;
                int maxLeftPosition = 110;
                int minTopPosition = 1;
                int maxTopPosition = 14;

                Console.SetCursorPosition(UserUtil.GenerateRandomNumber(minLeftPosition, maxLeftPosition + 1), UserUtil.GenerateRandomNumber(minTopPosition, maxTopPosition + 1));
                Console.WriteLine(fish.Characteristics.Image);
            }

            var ordered = fishes.OrderBy(fish => fish.Characteristics.Name).ThenBy(fish => fish.Age);

            int leftPosition = 0;
            int topPosition = 4;
            Console.SetCursorPosition(leftPosition, topPosition);

            foreach (var fish in ordered)
            {
                Console.ForegroundColor = fish.Characteristics.Color;
                Console.WriteLine($"{fish.Characteristics.Name} - {fish.Age}({fish.Characteristics.LifeExpectancy})");
            }

            Console.ResetColor();
        }

        public void GrowOldFishes(List<Fish> fishes)
        {
            foreach (var fish in fishes)
            {
                fish.IncreaseAge();
            }
        }

        public void KillFishes(List<Fish> fishes, int aquariumSize)
        {
            int fishCount = Characteristics.PresetCharacteristics.Count;
            int quantityPerLiter = 10;
            int maxFishCount = aquariumSize * quantityPerLiter;
            int volumeFish = fishes.Sum(fish => fish.Characteristics.OccupiedSize);
            int fullMultiplier = VerifyFullVolume(volumeFish, aquariumSize);

            if (volumeFish >= maxFishCount)
            {
                foreach (var fish in fishes)
                {
                    fish.Kill();
                }
            }
            else
            {
                foreach (var fish in fishes)
                {
                    int probabilityDeath = VerifyAge(fish);

                    probabilityDeath *= VerifyAlone(fish, fishes);

                    probabilityDeath *= fullMultiplier;

                    int maxChance = 100;

                    if (UserUtil.GenerateRandomNumber(maxChance + 1) < probabilityDeath)
                    {
                        fish.Kill();
                    }
                }
            }
        }

        private int VerifyFullVolume(int volumeFish, int aquariumSize)
        {
            int multiplier = 1;
            int fullMultiplier = 2;

            if (volumeFish > aquariumSize)
            {
                multiplier = fullMultiplier;
            }

            return multiplier;
        }

        private int VerifyAge(Fish fish)
        {
            int probabilityDeath = 2;
            int firstHalf = 2;
            int secondHalf = 5;
            int longLife = 90;
            int lifePeriod = 2;

            if (fish.Age < fish.Characteristics.LifeExpectancy / lifePeriod)
            {
                probabilityDeath = firstHalf;
            }
            else if (fish.Age < fish.Characteristics.LifeExpectancy)
            {
                probabilityDeath = secondHalf;
            }
            else if (fish.Age >= fish.Characteristics.LifeExpectancy)
            {
                probabilityDeath = longLife;
            }

            return probabilityDeath;
        }

        private int VerifyAlone(Fish fish, List<Fish> fishes)
        {
            string fishName = fish.Characteristics.Name;
            int nameCount = fishes.Count(fish => fish.Characteristics.Name == fishName);
            int multiplier = 1;
            int aloneMultiplier = 2;

            if (nameCount == 1)
            {
                multiplier = aloneMultiplier;
            }

            return multiplier;
        }

        public void RemoveFishes(List<Fish> fishes, int aquariumSize)
        {
            int quantityPerLiter = 10;
            int maxFishCount = aquariumSize * quantityPerLiter;
            int volumeFish = fishes.Sum(fish => fish.Characteristics.OccupiedSize);

            if (volumeFish >= maxFishCount)
            {
                Console.WriteLine("Too many fish. All died.");
            }

            int numberDead = 0;

            for (int i = fishes.Count - 1; i >= 0; i--)
            {
                if (fishes[i].IsAlive == false)
                {
                    fishes.RemoveAt(i);
                    numberDead++;
                }
            }

            int leftPosition = 0;
            int topPosition = 2;
            Console.SetCursorPosition(leftPosition, topPosition);
            Console.WriteLine($"fish died: {numberDead}");
        }

        public void IncreaseFishes(List<Fish> fishes)
        {
            Characteristics.ShowListCharacteristics();
            Console.Write("\nChoose type of fish to add: ");

            if (int.TryParse(Console.ReadLine(), out int typeNumber) && typeNumber >= 0 && typeNumber < Characteristics.PresetCharacteristics.Count)
            {
                Console.WriteLine("How many fish to add?");

                if (int.TryParse(Console.ReadLine(), out int amount) && amount > 0)
                {
                    for (int i = 0; i < amount; i++)
                    {
                        fishes.Add(new Fish(Characteristics.PresetCharacteristics[typeNumber]));
                    }
                }
                else
                {
                    Console.WriteLine("Wrong amount");
                }
            }
            else
            {
                Console.WriteLine("Wrong type");
            }
        }

        public void DecreaseFishes(List<Fish> fishes)
        {
            Characteristics.ShowListCharacteristics();
            Console.Write("\nChoose the type of fish to remove: ");

            if (int.TryParse(Console.ReadLine(), out int typeNumber) && typeNumber >= 0 && typeNumber < Characteristics.PresetCharacteristics.Count)
            {
                string fishName = Characteristics.PresetCharacteristics[typeNumber].Name;
                int nameCount = fishes.Count(fish => fish.Characteristics.Name == fishName);

                Console.WriteLine($"How many fish to remove? There are {nameCount} fish of this type");

                if (int.TryParse(Console.ReadLine(), out int amount) && amount > 0)
                {
                    if (amount > nameCount)
                    {
                        Console.WriteLine("The entered quantity exceeds the quantity of fish of this type in the aquarium, delete all fish of this type");
                        Console.WriteLine("\nPress something..");
                        Console.ReadKey();
                    }

                    amount = Math.Min(amount, nameCount);

                    for (int i = fishes.Count - 1; i >= 0; i--)
                    {
                        if (fishes[i].Characteristics.Name == fishName && amount > 0)
                        {
                            fishes.RemoveAt(i);
                            amount--;
                        }
                    }
                }
                else
                {
                    Console.WriteLine("Wrong amount");
                }
            }
            else
            {
                Console.WriteLine("Wrong type");
            }
        }
    }

    public class Fish
    {

        public Fish(Characteristics characteristics)
        {
            Characteristics = characteristics;
            IsAlive = true;

            InitiateAge();
        }

        public Characteristics Characteristics { get; private set; }
        public int Age { get; private set; }
        public bool IsAlive { get; private set; }

        public void IncreaseAge()
        {
            Age++;
        }

        public void Kill()
        {
            IsAlive = false;
        }

        private void InitiateAge()
        {
            int minAge = 1;
            int minLifeSpan = 10;
            int maxAge = Characteristics.LifeExpectancy > minLifeSpan ? Characteristics.LifeExpectancy - minLifeSpan : 1;

            Age = UserUtil.GenerateRandomNumber(minAge, maxAge + 1);
        }
    }

    public class Characteristics
    {
        public static List<Characteristics> PresetCharacteristics = new List<Characteristics>()
        {
            new Characteristics("Guppy", 30, 2, ">-->", ConsoleColor.Cyan),
            new Characteristics("Paracheirodon", 48, 2, ">==>",ConsoleColor.Blue),
            new Characteristics("Xiphophorus",60,4 ,"_>=>",ConsoleColor.Red),
            new Characteristics("Yucatan molly",30,4, ">WW>",ConsoleColor.DarkCyan),
            new Characteristics("Catfish", 96,8,">=>_",ConsoleColor.Gray ),
            new Characteristics("Goldfish",120,12,">=@>",ConsoleColor.DarkYellow)
        };

        public Characteristics(string name, int lifeExpectancy, int occupiedSize, string image, ConsoleColor color)
        {
            Name = name;
            LifeExpectancy = lifeExpectancy;
            OccupiedSize = occupiedSize;
            Image = image;
            Color = color;
        }

        public string Name { get; private set; }
        public int LifeExpectancy { get; private set; }
        public int OccupiedSize { get; private set; }
        public string Image { get; private set; }
        public ConsoleColor Color { get; private set; }

        public static void ShowListCharacteristics()
        {
            Console.Write("There is the following fish: ");

            for (int i = 0; i < PresetCharacteristics.Count; i++)
            {
                Console.Write($"{i} - {PresetCharacteristics[i].Name} ");
            }
        }
    }

    public class UserUtil
    {
        private static Random s_random = new Random();

        public static int GenerateRandomNumber(int min, int max)
        {
            return s_random.Next(min, max);
        }

        public static int GenerateRandomNumber(int max)
        {
            return s_random.Next(max);
        }
    }
}