using System;
namespace MENU
{
    class Program
    {
        static string[] menu = { "Первое", "Второе", "Третье", "Чек", "Выход" };
        static string[] menu1 = { "Борщ", "Венгерский суп", "Солянка", "Назад", "Выход" };
        static string[] menu2 = { "Паста", "Плов", "Котлеты", "Назад", "Выход" };
        static string[] menu3 = { "Мюсли", "Шарлотка", "Мороженое", "Назад", "Выход" };
        public static int summ;
        public static int summ1, summ2, summ3;
        public static string choise;
        public static string choise1, choise2, choise3;

        static void Menu1()
        {
            Console.Clear();
            PrintMenu(menu1, out int active);
            FirstMenuBeforeMenu(active);
        }
        static void Menu2()
        {
            Console.Clear();
            PrintMenu(menu2, out int active);
            SecondMenuBeforeMenu(active);

        }
        static void Menu3()
        {
            Console.Clear();
            PrintMenu(menu3, out int active);
            ThirdMenuBeforeMenu(active);
        }
        static void Check()
        {
            Console.Clear();
            Console.WriteLine("Заказ оформлен!");
        }
        static void Back()
        {
            Console.Clear();
            PrintMenu(menu, out int active);
            Menu(active);
        }
        static void Menu(int active)
        {
            switch (active)
            {
                case 0:
                    Menu1();
                    break;
                case 1:
                    Menu2();
                    break;
                case 2:
                    Menu3();
                    break;
                case 3:
                    Check();
                    choise = choise1 + " " + " " + choise2 + " " + " " + choise3;
                    Console.WriteLine("Вы заказали : " + choise);
                    summ = summ1 + summ2 + summ3;
                    Console.WriteLine("Сумма заказа : " + summ);
                    break;
                case 4:
                    Environment.Exit(0);
                    break;
            }
        }
        static int FirstMenuBeforeMenu(int active)
        {
            int[] price1 = new int[3] { 10, 20, 30 };
            switch (active)
            {
                    case 0:
                        choise1 = menu1[active];
                        Console.WriteLine("Вы выбрали: " + menu1[active]);
                        summ1 = price1[active];
                        Console.WriteLine("На сумму: " + price1[active]);
                        break;
                    case 1:
                        choise1 = menu1[active];
                        Console.WriteLine("Вы выбрали: " + menu1[active]);
                        summ1 = price1[active];
                        Console.WriteLine("На сумму: " + price1[active]);
                        break;
                    case 2:
                        choise1 = menu1[active];
                        Console.WriteLine("Вы выбрали: " + menu1[active]);
                        summ1 = price1[active];
                        Console.WriteLine("На сумму: " + price1[active]);
                        break;
                    case 3:
                        Back();
                        break;
                    case 4:
                        Environment.Exit(0);
                        break;
            }
            return summ1;
        }
        static void SecondMenuBeforeMenu(int active)
        {
            int[] price2 = new int[3] { 40, 50, 60 };
            switch (active)
            {
                case 0:
                    choise2 = menu2[active];
                    Console.WriteLine("Вы выбрали: {0}", menu2[active]);
                    summ2 = price2[active];
                    Console.WriteLine("На сумму: {0}", price2[active]);
                    break;
                case 1:
                    choise2 = menu2[active];
                    Console.WriteLine("Вы выбрали: {0}", menu2[active]);
                    summ2 = price2[active];
                    Console.WriteLine("На сумму: {0}", price2[active]);
                    break;
                case 2:
                    choise2 = menu2[active];
                    Console.WriteLine("Вы выбрали: {0}", menu2[active]);
                    summ2 = price2[active];
                    Console.WriteLine("На сумму: {0}", price2[active]);
                    break;
                case 3:
                    Back();
                    break;
                case 4:
                    Environment.Exit(0);
                    break;
            }
        }
        static void ThirdMenuBeforeMenu(int active)
        {
            int[] price3 = new int[3] { 70, 80, 90 };
            switch (active)
            {
                case 0:
                    choise3 = menu3[active];
                    Console.WriteLine("Вы выбрали: {0}", menu3[active]);
                    summ3 = price3[active];
                    Console.WriteLine("На сумму: {0}", price3[active]);
                    break;
                case 1:
                    choise3 = menu3[active];
                    Console.WriteLine("Вы выбрали: {0}", menu3[active]);
                    summ3 = price3[active];
                    Console.WriteLine("На сумму: {0}", price3[active]);
                    break;
                case 2:
                    choise3 = menu3[active];
                    Console.WriteLine("Вы выбрали: {0}", menu3[active]);
                    summ3 = price3[active];
                    Console.WriteLine("На сумму: {0}", price3[active]);
                    break;
                case 3:
                    Back();
                    break;
                case 4:
                    Environment.Exit(0);
                    break;
            }
        }
        static int PrintMenu(string[] menuactive, out int active)
        {
            active = 0;
            ConsoleKeyInfo key;
            do
            {
                Console.Clear();
                for (int i = 0; i < menuactive.Length; i++)
                {
                    if (active == i)
                    {
                        Console.BackgroundColor = ConsoleColor.White;
                        Console.ForegroundColor = ConsoleColor.Black;
                        Console.WriteLine(menuactive[i]);
                        Console.BackgroundColor = ConsoleColor.Black;
                        Console.ForegroundColor = ConsoleColor.White;
                    }
                    else
                        Console.WriteLine(menuactive[i]);
                }
                key = Console.ReadKey();
                if (key.Key == ConsoleKey.UpArrow && active != 0) active--;
                if (key.Key == ConsoleKey.DownArrow && active != menuactive.Length - 1) active++;
            }
            while (key.Key != ConsoleKey.Enter);
            return active;
        }
        static void Main(string[] args)
        {
            while (true)
            {
                PrintMenu(menu, out  int active);
                Menu(active);
                Console.ReadKey();
            }
        }
    }
}