using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace SoloLearn

{

    class Program

    {

​

​

        static void Main(string[] args)

        {   

​

​

            //Console.OutputEncoding = Encoding.UTF8;

            //Console.InputEncoding = Encoding.UTF8;

​

​

            Dictionary<string, string> birthdays = new Dictionary<string, string>();

            birthdays.Add("Андрей", "10.07");

            birthdays.Add("Эвита", "10.03");

            birthdays.Add("Папа", "11.08");

            birthdays.Add("Баба Галя", "10.10");

​

            Console.WriteLine("Текущий список всех ДР: \n");

            foreach(string key in birthdays.Keys)

                Console.WriteLine(key + " " + Instruments.ReverseDate(birthdays[key]));

            Console.WriteLine();

            var sorted = birthdays.OrderBy(birthdays => birthdays.Value);

            //foreach (var user in sorted)

            //{

            //    Console.WriteLine($"{user.Key} {user.Value}");

            //}

​

            Instruments.AddDaysTest();

​

                string argument = " ";

                while(argument.CompareTo("выход") != 0){

                    Console.WriteLine("Список доступных функций: \n");

                    Console.WriteLine("1. - Вывод всего списка");

                    Console.WriteLine("2. - Выход");

                    Console.WriteLine("3. - Добавить в список нового человека");

                    Console.WriteLine("4. - Удалить запись о человеке");

                    Console.WriteLine("5. - Список сегодняшних и ближайших дней рождения");

                    Console.WriteLine();

                    Console.Write("Введите команду: ");

                    argument = Console.ReadLine();

                    Console.WriteLine("\n");

​

                    switch(argument){

                        case "1":

                            Console.WriteLine("Текущий список всех ДР: \n");

                            foreach(string key in birthdays.Keys)

                                Console.WriteLine(key + " " + birthdays[key]);

​

                            break;

                        case "3" :

                            Console.Write("Введите имя: ");

                            string name = Console.ReadLine();

                            Console.Write("Введите дату рождения в формате [dd.mm]: ");

                            string date = Console.ReadLine();

                            try{

                                birthdays.Add(name, date);

                            }

                            catch (Exception e){

                                Console.WriteLine("Error");

                            }

                            break;

                        case "4":

                            Console.Write("Введите имя: ");

                            string name1 = Console.ReadLine();

                            if(birthdays.ContainsKey(name1))

                                birthdays.Remove(name1);

                            break;

​

                        case "5":

                            string today = DateTime.Now.ToString("MM.dd");

                            bool isAny = birthdays.ContainsValue(today);

​

                            if(isAny){

                                Console.WriteLine("Список ближайших дней рождений:");

                                Dictionary<string, string>.KeyCollection keyColl = birthdays.Keys;

                                bool gotDate = false;

​

​

                                foreach(string key in keyColl){

                                    if(birthdays[key] == today){

                                        Console.WriteLine(key + " - Сегодня");

                                        gotDate = true;

                                    }else if(gotDate == true){

                                        if(birthdays[key].CompareTo(Instruments.AddDays(today, 30)) < 0)

                                            Console.WriteLine(key + " - " + birthdays[key]);

                                        else

                                            break;

                                    }

                                }

                            break;

                                //foreach(string key in Ke)    

                                //    if(keyColl[index] == today){

                                //    Console.WriteLine(birthdays[keyColl[index]]);

                                //}

                                //foreach(key in birthdays.Keys){

                                //    if(birthdays[key].CompareTo(today) == 0)

                                //        Console.WriteLine(birthdays[key]);

                                //    

                                //}

                            }

                        break;

                    }

                }

        }

    }

​

    public class Instruments{

        public static string ReverseDate( string s )

        {

            string leftPart = s.Substring(0,2);

            string rightPart = s.Substring(3);

            return rightPart + "." + leftPart;

        }

​

        public static string AddDays(string s, int days)

        {

            int month = Convert.ToInt32(s.Substring(0,2));

            //Console.WriteLine("month: {0}", month);

            int day = Convert.ToInt32(s.Substring(3));

            //Console.WriteLine("day: {0}", day);

            int remainder = (day + days) % DateTime.DaysInMonth(DateTime.Now.Year, month);

            //Console.WriteLine("remainder: {0}", remainder);

            if(remainder == 0)

                day += days;

            else{

                day = remainder;

                month = (month + 1) % 12;

            }

            //Console.WriteLine("result: " + month.ToString("D2") + "." + day.ToString("D2"));

            return month.ToString("D2") + "." + day.ToString("D2");

        }

​

        public static void AddDaysTest(){

            string[] variants = {"01.01", "05.02", "20.01", "23.12"};

            string[] results = {"31.01", "07.03", "19.02", "22.01"};

            const int days = 30;

            for(int i = 0; i < variants.Count(); i++){

                string result =  ReverseDate(AddDays(ReverseDate(variants[i]),days));

                Console.WriteLine("Test #{0} | Input: \"{1}\" | Should be: \"{2}\" | Output: \"{3}\" - ", i+1, variants[i], results[i], result);

                if(result.CompareTo(results[i]) == 0)

                    Console.WriteLine("Ok");

                else

                    Console.WriteLine("WRONG");

            }

        }

    }

​

    class Birthdays{

        Dictionary<string, string> birthdays = new Dictionary<string, string>();

​

    }

}

​