Unit_45

using System;
using System.Collections.Generic;

namespace Ijunior
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Supermarket supermarket = new Supermarket();
            supermarket.Work();
        }
    }

    class Supermarket
    {
        private List<Product> _products;
        private Queue<Customer> _customers;
        private int _money;

        public Supermarket()
        {
            _products = new List<Product>();
            FillProductList();
            _customers = new Queue<Customer>();
            AddCustomers();
            _money = 0;
        }

        public void Work()
        {
            const string CommandServeCustomer = "1";
            const string CommandAddCustomers = "2";
            const string CommandExit = "3";

            bool isWork = true;

            while (isWork)
            {
                Console.WriteLine($"Заработано: {_money}\n");
                Console.WriteLine($"В очереди клиентов: {_customers.Count}\n");

                Console.Write($"{CommandServeCustomer} - рассчитать клиента" +
                              $"\n{CommandAddCustomers} - добавить клиентов" +
                              $"\n{CommandExit} - выйти" +
                              $"\nВведите номер: ");

                switch (Console.ReadLine())
                {
                    case CommandServeCustomer:
                        ServeCustomer();
                        break;

                    case CommandAddCustomers:
                        AddCustomers();
                        break;

                    case CommandExit:
                        isWork = false;
                        break;

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

                Console.Clear();
            }
        }

        private void FillProductList()
        {
            List<string> names = new List<string>()
            {

                "шоколад 'Twix'", "шоколад 'Bounty'", "шоколад 'Snickers'",
                "торт 'Полет'", "торт 'Медовик'", "торт 'Наполеон'",
                "зефир", "пастила", "халва", "конфеты",
                "чипсы 'Lays'", "чипсы 'Cheetos'", "чипсы 'Pringles'"
            };

            for (int i = 0; i < names.Count; i++)
            {
                _products.Add(new Product(names[i], GenerateCost()));
            }
        }

        private void AddCustomers()
        {
            int countCustomers = 10;

            for (int i = 0; i < countCustomers; i++)
            {
                List<Product> cart = new List<Product>();
                CreateCart(cart);
                _customers.Enqueue(new Customer(cart, GenerateMoney()));
            }
        }

        private void CreateCart(List<Product> cart)
        {
            int minIndex = 0;
            int maxIndex = _products.Count - 1;
            int minCountProducts = 1;
            int maxCountProducts = 10;
            int countProducts = Utils.GetRandomNumber(minCountProducts, maxCountProducts);

            for (int i = 0; i < countProducts; i++)
            {
                cart.Add(_products[Utils.GetRandomNumber(minIndex, maxIndex)]);
            }
        }

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

                Console.WriteLine("Нажмите любую клавишу, чтобы рассчитать клиента");
                Console.ReadLine();

                while (customer.IsMoneyEnough() == false)
                {
                    customer.ShowInfo();
                    customer.RemoveRandomProduct();
                }

                int sum = customer.Pay();
                _money += sum;

                customer.FillBag();
                customer.ClearCart();
            }
            else
            {
                Console.WriteLine("Клиентов нет");
            }
        }

        private int GenerateMoney()
        {
            int minMoney = 500;
            int maxMoney = 1000;

            return Utils.GetRandomNumber(minMoney, maxMoney);
        }

        private int GenerateCost()
        {
            int minMoney = 50;
            int maxMoney = 200;

            return Utils.GetRandomNumber(minMoney, maxMoney);
        }
    }

    class Product
    {
        private string _name;

        public Product(string name, int cost)
        {
            _name = name;
            Cost = cost;
        }

        public int Cost { get; }

        public void ShowInfo()
        {
            Console.WriteLine($"{_name} - {Cost} монет");
        }
    }

    class Customer
    {
        private List<Product> _cart;
        private List<Product> _bag;
        private int _money;

        public Customer(List<Product> cart, int money)
        {
            _cart = cart;
            _bag = new List<Product>();
            _money = money;
        }

        public void ShowInfo()
        {
            Console.Clear();
            Console.WriteLine("У покупателя: \n");

            foreach (Product product in _cart)
            {
                product.ShowInfo();
            }

            Console.WriteLine("\nСумма товаров: " + CountProductsSum() + "\n");
        }

        public int Pay()
        {
            int sum = CountProductsSum();
            _money -= sum;

            return sum;
        }

        public int CountProductsSum()
        {
            int sum = 0;

            foreach (Product product in _cart)
            {
                sum += product.Cost;
            }

            return sum;
        }

        public void FillBag()
        {
            for (int i = 0; i < _cart.Count; i++)
            {
                _bag.Add(_cart[i]);
            }
        }

        public void ClearCart()
        {
            _cart.Clear();
        }

        public bool IsMoneyEnough()
        {
            return _money >= CountProductsSum();
        }

        public void RemoveRandomProduct()
        {
            int minIndex = 0;
            int maxIndex = _cart.Count - 1;

            Product removedProduct = _cart[Utils.GetRandomNumber(minIndex, maxIndex)];
            _cart.Remove(removedProduct);

            Console.Write("У покупателя не хватает денег. Он удаляет из корзины: ");
            removedProduct.ShowInfo();
            Console.ReadKey();
        }
    }

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

        public static int GetRandomNumber(int minValue, int maxValue)
        {
            return s_random.Next(minValue, maxValue);
        }
    }
}