using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;

namespace Salary1
{
    [Serializable]
    abstract class Employee
    {
        public string Name { get; set; }
        public double Salary { get; set; }

        public double Tax { get; set; }

        public Employee(string name, double tax)
        {
            Name = name;
            Tax = tax;
            Salary = GetSalary();
        }
        protected abstract double GetSalary();
    }
    [Serializable]
    class FixedSalary : Employee
    {
        public FixedSalary(string name, double tax)
            : base(name, tax) { }

        protected override double GetSalary()
        {
            return Tax;
        }
    }
    [Serializable]
    class TimeSalary : Employee
    {
        public TimeSalary(string name, double tax)
            : base(name, tax) { }

        protected override double GetSalary()
        {
            return 20.8 * 8 * Tax;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            #region Create journal
            List<Employee> journal = new List<Employee>();
            journal.Add(new FixedSalary("Roma Mak", 1000));
            journal.Add(new FixedSalary("Nikolay Murtov", 780));
            journal.Add(new FixedSalary("Diana Reva", 610));
            journal.Add(new FixedSalary("Dmitriy Stokov", 1190));
            journal.Add(new FixedSalary("Dmitriy Stobov", 1190));
            journal.Add(new TimeSalary("Ivan Lisov", 4));
            journal.Add(new TimeSalary("Svetlana Orekhova", 5.5));
            journal.Add(new TimeSalary("Oleg Lugniy", 5));
            journal.Add(new TimeSalary("Mila Werhova", 8));
            #endregion
            #region Sorting
            var sortJournal = journal.OrderByDescending(a => a.Salary).ThenBy(a => a.Name).ToList();

            int counter = 1;
            foreach (var item in sortJournal)
            {
                Console.WriteLine("{0}) {1} : {2}", counter++, item.Name, item.Salary);
            }

            Console.ReadKey();
            Console.Clear();

            var sortOne = journal.OrderByDescending(a => a.Salary).ThenBy(a => a.Name).Take(5).ToList();
            counter = 1;
            foreach (var item in sortOne)
            {
                Console.WriteLine("{0}) {1} : {2}", counter++, item.Name, item.Salary);
            }

            Console.ReadKey();
            Console.Clear();


            var sortTwo = journal.OrderByDescending(a => a.Salary).ThenBy(a => a.Name).Reverse().Take(3).ToList();
            counter = 1;
            foreach (var item in sortTwo)
            {
                Console.WriteLine("{0}) {1} : {2}", counter++, item.Name, item.Salary);
            }
            #endregion
            #region WriterReader

            counter = 1;
            Console.ReadKey();
            Console.Clear();

            var binary = new BinaryFormatter();

            using (FileStream fs = new FileStream("data.dat", FileMode.Create))
            {
                binary.Serialize(fs, sortJournal);
            }
            var result = binary.Deserialize(File.Open("data.dat", FileMode.Open)) as List<Employee>;
            foreach (var item in result)
            {
                Console.WriteLine("{0} : {1}", item.Name, item.Salary);
            }
            #endregion
        }
    }

}