using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MENU
{
    class Program
    {
        static string[] menu = { "Первое", "Второе", "Третье", "Выход" };
        static string[] menu1 = { "Борщ", "Венгерский суп", "Солянка", "Чек", "Назад", "Выход" };
        static string[] menu2 = { "Паста", "Плов", "Котлеты", "Чек", "Назад", "Выход" };                                                                                    // а нужно чтобы там же оставалось
        static string[] menu3 = { "Мюсли", "Шарлотка", "Мороженое", "Чек", "Назад", "Выход" };
        public int Summ = 0;
        public int summ1, summ2, summ3;
        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 int Price(int Summ, int summ1, int  summ2, int summ3)
        {
            Summ = summ1 + summ2 + summ3;
            return Summ;
        }
        //static void BeforeCheck()
        //{
        //    string[] menu4 = { "Назад", "Выход" };
        //    PrintMenu(menu4, out int active);
        //    //PBeforeCheck(active);
        //}
        //static void PBeforeCheck(int active)
        //{
        //    //if (active == 0)
        //    //    Back();
        //    //else if (active == 1)
        //        Environment.Exit(0);
        //}
        static void Back()
        {
            Console.Clear();
            PrintMenu(menu, out int active);
            Menu(active);
        }
        static void Menu(int active) //МЕТОД ДЛЯ 1-ГО МЕНЮ//
        {
            switch (active)
            {
                case 0:
                    Menu1();
                    break;
                case 1:
                    Menu2();
                    break;
                case 2:
                    Menu3();
                    break;
                case 3:
                    Environment.Exit(0);
                    break;
            }
        }
        static void FirstMenuBeforeMenu(int active)//МЕТОД ДЛЯ ВТОРОГО МЕНЮ//
        {

            int[] price1 = new int[3] { 10, 20, 30 };
            int summ1 = price1[active]; ;
            switch (active)
            {
                    case 0:

                        Console.WriteLine("Вы выбрали: " + menu1[active]);
                        Console.WriteLine("На сумму: " + price1[active]);
                        Console.WriteLine("Summ = " + summ1);
                    break;
                    case 1:

                        Console.WriteLine("Вы выбрали: " + menu1[active]);
                        Console.WriteLine("На сумму: " + price1[active]);
                        Console.WriteLine("Summ = " + summ1);
                    break;
                    case 2:
                        Console.WriteLine("Вы выбрали: " + menu1[active]);
                        Console.WriteLine("На сумму: " + price1[active]);
                        Console.WriteLine("Summ = " + summ1);
                    break;
                    case 3:
                        Check();
                        break;
                    case 4:
                        Back();
                        break;
                    case 5:
                    Environment.Exit(0);
                    break;
            }
        }
        static void SecondMenuBeforeMenu(int active)
        {
            int[] price2 = new int[3] { 40, 50, 60 };
            switch (active)
            {
                case 0:
                    Console.WriteLine("Вы выбрали: {0}", menu2[active]);
                    Console.WriteLine("На сумму: {0}", price2[active]);
                    break;
                case 1:
                    Console.WriteLine("Вы выбрали: {0}", menu2[active]);
                    Console.WriteLine("На сумму: {0}", price2[active]);
                    break;
                case 2:
                    Console.WriteLine("Вы выбрали: {0}", menu2[active]);
                    Console.WriteLine("На сумму: {0}", price2[active]);
                    break;
                case 3:
                    Check();
                    break;
                case 4:
                    Back();
                    break;
                case 5:
                    Environment.Exit(0);
                    break;
            }
        }
        static void ThirdMenuBeforeMenu(int active)
        {
            int[] price3 = new int[3] { 70, 80, 90 };
            switch (active)
            {
                case 0:
                    Console.WriteLine("Вы выбрали: {0}", menu3[active]);
                    Console.WriteLine("На сумму: {0}", price3[active]);
                    break;
                case 1:
                    Console.WriteLine("Вы выбрали: {0}", menu3[active]);
                    Console.WriteLine("На сумму: {0}", price3[active]);
                    break;
                case 2:
                    Console.WriteLine("Вы выбрали: {0}", menu3[active]);
                    Console.WriteLine("На сумму: {0}", price3[active]);
                    break;
                case 3:
                    Check();
                    break;
                case 4:
                    Back();
                    break;
                case 5:
                    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();
            }
        }

    }
}