Супермаркет

using System.Diagnostics;
using System.Xml.Linq;

namespace Супермаркет
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Supermarket supermarket = new Supermarket();

            supermarket.Work();
        }
    }

    class Supermarket
    {
        private Client _client = new Client();

        private int _purchasePrice;
        private int _quantityClients;

        private List<Product> _products = new List<Product>();
        private List<Product> _clientBasket = new List<Product>();

        private Queue<Client> _clients;

        public Supermarket()
        {
            _clients = new Queue<Client>(_quantityClients);

            _clientBasket = _client.ReturnClientBasket();

            _products.Add(new Product(0, "Пакет", 10));
            _products.Add(new Product(1, "Бананы", 85));
            _products.Add(new Product(2, "Молоко", 65));
            _products.Add(new Product(3, "Пиво", 50));
            _products.Add(new Product(4, "Курица", 320));
            _products.Add(new Product(5, "Сосиски", 125));
            _products.Add(new Product(6, "Кола", 75));
        }

        public void Work()
        {
            Console.WriteLine("Введите количество посетителей:");

            _quantityClients = Utility.ReturnInputNumber();


            for (int i = 0; i < _quantityClients; i++)
            {
                AddClient();
                FillBasket();
                RemoveUnnecessaryProduct();
                InspectionBasketForAbsenceProduct();
                ShowSale();

                Console.ForegroundColor = ConsoleColor.DarkYellow;
                Console.WriteLine("\nНажмите любую клавишу для вызова следующего клиента");
                Console.ForegroundColor = ConsoleColor.White;

                Console.ReadKey();
                Console.Clear();

                _purchasePrice = 0;

                _clients.Dequeue();
            }
        }

        private void AddClient()
        {
            _clients.Enqueue(new Client());
        }

        private bool CanPay()
        {
            while (_clients.Peek().Money < _purchasePrice)
            {
                Console.ForegroundColor = ConsoleColor.DarkGreen;
                Console.Write($"\nСумма покупки: {_purchasePrice}");
                Console.ForegroundColor = ConsoleColor.White;

                Console.ForegroundColor = ConsoleColor.DarkYellow;
                Console.Write($"\nДеньги покупателя: {_clients.Peek().Money}\n");
                Console.ForegroundColor = ConsoleColor.White;

                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Денег не хватает, Галя! Отмена!");
                Console.ForegroundColor = ConsoleColor.White;

                return false;
            }

            return true;
        }

        private void RemoveUnnecessaryProduct()
        {
            if (CanPay() == false)
            {
                RemoveRandomProduct();
                RemoveUnnecessaryProduct();
            }
        }

        private void InspectionBasketForAbsenceProduct()
        {
            if (_clientBasket.Count == 0)
            {
                Console.ForegroundColor = ConsoleColor.DarkRed;
                Console.WriteLine("\nЖалобную книгу мне! (Клиент передумал покупать в этом магазине)");
                Console.ForegroundColor = ConsoleColor.White;

                return;
            }
        }

        private void ShowSale()
        {
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.Write($"\nСумма покупки: {_purchasePrice}");
            Console.ForegroundColor = ConsoleColor.White;

            Console.ForegroundColor = ConsoleColor.DarkYellow;
            Console.Write($"\nДеньги покупателя: {_clients.Peek().Money}");
            Console.ForegroundColor = ConsoleColor.White;

            Console.ForegroundColor = ConsoleColor.Green;
            Console.WriteLine("\nДенег хватает\n");
            Console.ForegroundColor = ConsoleColor.White;

            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("Купленные товары:\n");
            Console.ForegroundColor = ConsoleColor.White;

            ShowProductBasket();
        }

        private void RemoveRandomProduct()
        {
            int minRandomNumber = 0;

            int randomProduct = Utility.GenerateRandomNumber(minRandomNumber, _clientBasket.Count);

            Console.Write("Удаленный товар: ");

            ShowProduct(randomProduct);

            _purchasePrice -= _clientBasket[randomProduct].Price;

            _clientBasket.RemoveAt(randomProduct);
        }

        private void ShowProduct(int foundProduct)
        {
            Console.WriteLine($"ID: {_clientBasket[foundProduct].Id} Название: {_clientBasket[foundProduct].Title} Цена: {_clientBasket[foundProduct].Price} Руб.");
        }

        private void ShowProductBasket()
        {
            for (int i = 0; i < _clientBasket.Count; i++)
            {
                ShowProduct(i);
            }
        }

        private void FillBasket()
        {
            int minQuantityPurchases = 2;
            int maxQuantityPurchases = 10;
            int minIndexProduct = 0;

            int quantityPurchases = Utility.GenerateRandomNumber(minQuantityPurchases, maxQuantityPurchases);

            _clientBasket = new List<Product>(quantityPurchases);

            for (int i = 0; i < quantityPurchases; i++)
            {
                int randomIndexOfProduct = Utility.GenerateRandomNumber(minIndexProduct, _products.Count);

                _clientBasket.Add(_products[randomIndexOfProduct]);

                _purchasePrice += _products[randomIndexOfProduct].Price;

                ShowProduct(i);
            }
        }
    }

    class Client
    {
        private List<Product> _basket = new List<Product>();

        public Client()
        {
            int minCashInPocket = 100;
            int maxCashInPocket = 1200;

            Money = Utility.GenerateRandomNumber(minCashInPocket, maxCashInPocket);
        }

        public int Money { get; private set; }

        public List<Product> ReturnClientBasket()
        {
            return new List<Product>(_basket);
        }
    }

    class Product
    {
        public Product(int id, string name, int price)
        {
            Id = id;
            Title = name;
            Price = price;
        }

        public int Id { get; private set; }
        public string Title { get; private set; }
        public int Price { get; private set; }
    }

    class Utility
    {
        private static Random s_random = new Random();

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

        public static int ReturnInputNumber()
        {
            int number;

            while (int.TryParse(Console.ReadLine(), out number) == false)
            {
                Console.WriteLine("Введено не число, попробуйте еще раз: ");
            }

            return number;
        }
    }
}