/*
 * Created by SharpDevelop.
 * User: User
 * Date: 27.09.2016
 * Time: 23:23
 *
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;

namespace USER
{
	/// <summary>
	/// Description of user.
	/// </summary>
	public class user
	{
		string name;
		string surname;
		string middle_name;
		DateTime date_of_birth;

        static string check_name(string check_str)
        {
            if (String.IsNullOrEmpty(check_str))
            {
                throw new ArgumentException("Имя и фамилия не может быть null или пустой строкой");
            }
            char[] arname = check_str.ToCharArray();
            for (int i = 1; i < arname.Length; i++)
            {
                arname[i] = char.ToLower(arname[i]);
            }
            arname[0] = char.ToUpper(arname[0]);
            return new string(arname);
        }

        static string check_middle_name(string check_str)
        {
            if (String.Empty == check_str)
            {
            	throw new ArgumentException("Очество не может быть пустой строкой");
            }
            if (check_str == null)
            {
            	return null;
            }
            char[] arname = check_str.ToCharArray();
            for (int i = 1; i < arname.Length; i++)
            {
                arname[i] = char.ToLower(arname[i]);
            }
            arname[0] = char.ToUpper(arname[0]);
            return new string(arname);
        }

        static DateTime check_data(DateTime date)
        {
            if (date > DateTime.Now)
            {
                throw new ArgumentException("Дата не может быть в будущем");
            }
            if (GetYear(date) > 150)
            {
                throw new ArgumentException("Дата такова, что возраст человека больше 150 лет");
            }
            return date;
        }

        public string Name
        {
            get
            {
                return name;
            }
        	set
            {
                name = check_name(value);
            }
        }

        public string Middle_name
        {
            get
            {
            	if (middle_name == null)
            	{
            		return "";
            	}
            	return middle_name;
            }
        	set
            {
                middle_name = check_middle_name(value);
            }
        }

        public string Surname
        {
            get
            {
                return surname;
            }
        	set
            {
                surname = check_name(value);
            }
        }

        public DateTime Date_of_birth
        {
            get
            {
                return date_of_birth;
            }
        	set
            {
                date_of_birth = check_data(value);
            }
        }

        public int Age
        {
            get
            {
            	return GetYear(date_of_birth);
            }
        }

        protected static int GetYear(DateTime date_of_birth)
        {
        	int age;
        	age = DateTime.Now.Year - date_of_birth.Year;
                if (DateTime.Now.Month < date_of_birth.Month ||
                    (DateTime.Now.Month == date_of_birth.Month && DateTime.Now.Day < date_of_birth.Day)) age--;
        	return age;
        }

		public user(string name, string surname, string middle_name, DateTime date_of_birth)
		{
			Name = name;
		    Surname = surname;
		    Middle_name = middle_name;
            Date_of_birth = date_of_birth;
		}
	}
}