using System;
using System.Collections.Generic;

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

        supermarket.SellingProducts();
    }
}

class Supermarket
{
    private static Random random = new Random();

    private int _supermarketMoney = 0;

    private Basket basket = new Basket();

    private Queue<Buyer> _buyers = new Queue<Buyer>();
    private List<Product> _products = new List<Product>();

    public Supermarket()
    {
        _products.Add(new Product("Банан", 10));
        _products.Add(new Product("Яблоко", 5));
        _products.Add(new Product("Груша", 15));
        _products.Add(new Product("Апельсин", 20));
        _products.Add(new Product("Арбуз", 30));

        CreateNewBuyers(5);
    }

    public void CreateNewBuyers(int count)
    {
        int minMoney = 30;
        int maxMoney = 51;

        for (int i = 0; i < count; i++)
        {
            _buyers.Enqueue(new Buyer(random.Next(minMoney,maxMoney)));
        }
    }

    public void FillBasket()
    {
        Product product = null;

        int _maxbuyCount = 6;
        int _minbuyCount = 2;
        int productCount = random.Next(_minbuyCount,_maxbuyCount);

        for (int i = 0; i < productCount; i++)
        {
            int randomIndex = random.Next(_products.Count);
            product = _products[randomIndex];
            basket.TakeProduct(product);
        }
    }

    public void SellingProducts()
    {
        bool isBuy = true;
        int productsAllPrice;

        Console.WriteLine($"Сегодня супермаркет заработал {_supermarketMoney} монет.");

        Buyer buyer = _buyers.Dequeue();
        FillBasket();
        productsAllPrice = basket.GiveAllPrice();

        Console.WriteLine($"К кассе подошёл покупатель. У него {buyer.Money} монет. \nОн хочет купить продукты на сумму {productsAllPrice} монет.");

        while (isBuy)
        {
            if (buyer.Money < productsAllPrice)
            {
                Console.WriteLine("У покупателя недостаточно монет! Нужно убрать ненужные товары из корзины чтобы хватило монет.");

                basket.ShowProducts();
                basket.RemoveRandomProduct();
                productsAllPrice = basket.GiveAllPrice();
            }
            else
            {
                Console.WriteLine("Довольный покупатель уходит со своими товарами.");
                isBuy = false;
            }

            Console.ReadKey();
        }
    }
}

class Basket
{
    private static Random  random = new Random();

    private int _productsAllPrice = 0;

    private List<Product> _productsInBasket = new List<Product>();

    public void TakeProduct(Product product)
    {
        _productsInBasket.Add(product);
    }

    public int GiveAllPrice()
    {
        _productsAllPrice = 0;

        foreach (Product product in _productsInBasket)
        {
            _productsAllPrice += product.Price;
        }

        return _productsAllPrice;
    }

    public void ShowProducts()
    {
        foreach (Product product in _productsInBasket)
        {
            Console.WriteLine($"{product.Name}");
        }
    }

    public void RemoveRandomProduct()
    {
        Product product = null;

        int randomIndex = random.Next(_productsInBasket.Count);

        product = _productsInBasket[randomIndex];

        _productsInBasket.Remove(product);
    }
}

class Buyer
{
    public Buyer(int money)
    {
        Money = money;
    }

    public int Money { get; private set; }
}

class Product
{
    public Product(string name, int price)
    {
        Name = name;
        Price = price;
    }

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