using System;
using System.Collections.Generic;

namespace ConsoleApp31
{
    struct Product
    {
        public string name;
        public string country;
        public int count;
        public Product(string name,string country,int count)
        {
            this.name = name;
            this.country = country;
            this.count = count;
        }
    }
    class Handler
    {
        public void ModifyField(List<Product>products)
        {
            Console.WriteLine("Enter product name");
            string nameProduct = Console.ReadLine();
            for (var i = 0; i < products.Count; i++)
                if (products[i].name == nameProduct)
                {
                    Console.WriteLine("Enter new country name");
                    var temp = products[i];
                    temp.country = Console.ReadLine();
                    products[i] = temp;
                }
        }


    }
    class Menu
    {
        public delegate void MethodContainer(List<Product>products);
        public static event MethodContainer onModify;
        private static string operation;
        public static void StartCommands()
        {
            Console.WriteLine("If you want add product, enter \"ADD\" ");
            Console.WriteLine("If you want delete product, enter \"DELETE\" ");
            Console.WriteLine("If you want sort product, enter \"SORT\" ");
            Console.WriteLine("If you want chek export info, enter \"INFO \" ");
            Console.WriteLine("If you want edit count product, enter \"EDIT \" ");
            Console.WriteLine("to modify the value of a field in an array for an element with a given index enter \"MODIFY\"");
        }
        public static void Action(List<Product>products)
        {
            operation = Console.ReadLine();
            string nameProduct;
            switch (operation)
            {
                case "ADD":
                    Console.WriteLine("Enter product name:");
                    string name = Console.ReadLine();
                    Console.WriteLine("Enter import country:");
                    string country = Console.ReadLine();
                    Console.WriteLine("Enter count product:");
                    int count = Convert.ToInt32(Console.ReadLine());
                    products.Add(new Product(name, country, count));
                    break;
                case "DELETE":
                    Console.WriteLine("Enter product name:");
                    nameProduct = Console.ReadLine();
                    for (int i = 0; i < products.Count; i++)
                        if (products[i].name == nameProduct)
                        {
                            products.RemoveAt(i);
                        }
                    break;
                case "SORT":
                    SortArr(products);
                    break;
                case "INFO":
                    Console.WriteLine("Enter product name:");
                    nameProduct = Console.ReadLine();
                    Info(nameProduct, products);
                    break;
                case "EDIT":
                    Console.WriteLine("Enter product name");
                    nameProduct = Console.ReadLine();
                    for (var i = 0; i < products.Count; i++)
                        if (products[i].name == nameProduct)
                        {
                            Console.WriteLine("Enter new count");
                            var temp = products[i];
                            temp.count = Convert.ToInt32(Console.ReadLine());
                            products[i] = temp;
                        }
                    break;
                case "Modify":
                    onModify(products);
                    break;
            }
            Console.WriteLine("------------------------------------");
            Console.Write("Enter commands:");
        }
        public static void SortArr(List<Product> products)
        {
            for (int i = 0; i < products.Count - 1; i++)
                for (int j = 1; i < products.Count; j++)
                    if (products[j].name[0] < products[i].name[0])
                    {
                        var temp = products[i];
                        products[i] = products[j];
                        products[j] = temp;
                    }
        }
        public static int Info(string productName, List<Product> products)
        {
            foreach (var item in products)
                if (item.name == productName)
                {
                    Console.WriteLine($"Count:{item.count},country:{item.country}");
                    return 1;
                }
            Console.WriteLine("Product no found");
            return 1;
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            Handler evt = new Handler();
            Menu.onModify += Handler.ModifyField();
            List<Product> products = new List<Product>();
            Menu.StartCommands();
            while (true)
            {
                Menu.Action(products);
            }

        }
    }
}