Task 46 Supermarket

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

            supermarket.Start();
        }
    }

    public enum ConsoleCommand
    {
        AddProducts = 1,
        AddCustomers,
        ServeCustomer,
        Exit
    }

    public class Supermarket
    {
        private Queue<Customer> _customers = new Queue<Customer>();

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

        public int Money { get; private set; } = 0;

        public void Start()
        {
            bool isOpen = true;

            Console.WriteLine("Добро пожаловать в Управление Супермаркетом");

            while (isOpen)
            {
                ShowInfo();

                Console.WriteLine((int)ConsoleCommand.AddProducts + ". Добавить новые товары");
                Console.WriteLine((int)ConsoleCommand.AddCustomers + ". Добавть новых клиентов");
                Console.WriteLine((int)ConsoleCommand.ServeCustomer + ". Обслужить клиента");
                Console.WriteLine((int)ConsoleCommand.Exit + ". Выход");

                if (int.TryParse(Console.ReadLine(), out int userInput))
                {
                    switch (userInput)
                    {
                        case (int)ConsoleCommand.AddProducts:
                            AddProducts();
                            break;

                        case (int)ConsoleCommand.AddCustomers:
                            AddCustomers();
                            break;

                        case (int)ConsoleCommand.ServeCustomer:
                            ServeCustomer();
                            break;

                        case (int)ConsoleCommand.Exit:
                            isOpen = false;
                            break;

                        default:
                            Console.WriteLine("Некорректный ввод");
                            break;
                    }
                }

                Console.ReadLine();

                Console.Clear();
            }
        }

        private void ServeCustomer()
        {
            if (_customers.Count > 0)
            {
                Customer client = _customers.Dequeue();

                bool hePaid = false;

                while (hePaid == false)
                {
                    if (client.TryBuyProducts(out int purchaseAmount))
                    {
                        Money += purchaseAmount;

                        hePaid = true;
                    }
                }
            }
        }

        private void AddProducts()
        {
            Console.WriteLine("Сколько видов товаров прибыло сегодня?");

            if (int.TryParse(Console.ReadLine(), out int numberProducts) && numberProducts >= 0)
            {
                for (int i = numberProducts; i > 0; i--)
                {
                    Console.WriteLine("Введите наименование прибывшего товара");
                    string name = Console.ReadLine();

                    Console.WriteLine("Установите цену: ");

                    if (int.TryParse(Console.ReadLine(), out int price) && price >= 0)
                    {
                        _products.Add(new Product(name, price));
                    }
                    else
                    {
                        Console.WriteLine("Некорректный ввод");
                    }
                }
            }
        }

        private void AddCustomers()
        {
            Console.WriteLine("Введите кол-во прибывших клиентов");

            if (int.TryParse(Console.ReadLine(), out int numberCustomers) && numberCustomers >= 0)
            {
                for (int i = 0; i < numberCustomers; i++)
                {
                    Customer customer = new Customer();
                    customer.ChooseProducts(_products);

                    _customers.Enqueue(customer);
                }
            }
        }

        private void ShowInfo()
        {
            Console.WriteLine("Товары: ");

            for (int i = 0; i < _products.Count; i++)
            {
                int number = i + 1;

                string info = _products[i].ShowInfo();

                Console.WriteLine(number + ". " + info);
            }

            Console.WriteLine($"Клентов в очереди: {_customers.Count}.\nКол-во денег в кассе: " + Money);
        }
    }

    public class Customer
    {
        private Random _random = new Random();
        private List<Product> _boughtProducts = new List<Product>();
        private List<Product> _productsInBasket = new List<Product>();

        public Customer()
        {
            int lowRandomLimit = 50;
            int highRandomLimit = 100;

            Money = _random.Next(lowRandomLimit, highRandomLimit);
        }

        public int Money { get; private set; }

        public void ChooseProducts(List<Product> products)
        {
            int lowRandomLimit = 0;
            int highRandomLimit = products.Count;

            for (int i = 0; i < _random.Next(lowRandomLimit, highRandomLimit); i++)
            {
                _productsInBasket.Add(products[_random.Next(lowRandomLimit, highRandomLimit)]);
            }
        }

        public bool TryBuyProducts(out int price)
        {
            price = 0;

            foreach (var product in _productsInBasket)
            {
                price += product.Price;
            }

            bool moneyEnough = true;

            if (Money > price)
            {
                BuyProducts(price);

                return moneyEnough;
            }
            else
            {
                Console.WriteLine("Недостаточно средств");

                RemoveRandomProduct();

                return moneyEnough = false;
            }
        }

        private void BuyProducts( int price)
        {
            foreach (var product in _productsInBasket)
            {
                _boughtProducts.Add(product);
            }

            _productsInBasket.Clear();

            Money -= price;
        }

        private void RemoveRandomProduct()
        {
            int lowRandomLimit = 0;
            int highRandomLimit = _productsInBasket.Count;

            _productsInBasket.Remove(_productsInBasket[_random.Next(lowRandomLimit, highRandomLimit)]);
        }
    }

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

        public string Name { get; }

        public int Price { get; }

        public string ShowInfo() => Name + ": " + Price + " монет";
    }
}