using System;
using System.Threading;
using System.Threading.Tasks;

namespace x
{    public struct Student
    {
        public string FullName { get; set; }
        public double Ball { get; set; }
    }

    public class StudentServices
    {
        Mutex mutexObj = new Mutex();
        Random random = new Random();
        public int Count { get; set; }
        static Student[] Students;
        public StudentServices(int Count)
        {
            this.Count = Count;
            Thread AThread = new Thread(new ThreadStart(Input));
            AThread.Name = $"Thread Input";
            Thread BThread = new Thread(new ThreadStart(Trunsver));
            BThread.Name = $"Thread Trunslate";
            Thread CThread = new Thread(new ThreadStart(Output));
            CThread.Name = $"Thread Output";
            //start input thread
            AThread.Start();
            Task.Delay(10);

            //translate date
            BThread.Start();
            Task.Delay(15);

            //output default date
            CThread.Start();
            Task.Delay(10);
        }

        public void Input()
        {
            mutexObj.WaitOne();     // зупиняєм потік для отримання мютекса
            Console.WriteLine($"{Thread.CurrentThread.Name} Start");
            Student student = new Student();
            Students = new Student[Count];
            for (int i = 0; i < Count; i++)
            {
                student.FullName = $"Name[{i + 1}]";
                student.Ball = random.Next(1, 100);
                Students[i] = student;
            }
            mutexObj.ReleaseMutex();    // звільняєм мютекс

        }

        public void Output()
        {

            mutexObj.WaitOne();     // зупиняєм потік для отримання мютекса
            Console.WriteLine($"{Thread.CurrentThread.Name} Start");
            if (Students != null)
                foreach (var item in Students)
                {
                    Console.WriteLine("Name: " + item.FullName + ". Ball: " + item.Ball);
                }
            mutexObj.ReleaseMutex();    // // звільняєм мютекс

        }

        public void Trunsver()
        {
            mutexObj.WaitOne();     // зупиняєм потік для отримання мютекса
            Console.WriteLine($"{Thread.CurrentThread.Name} Start");
            for (int i = 0; i < Students.Length; i++)
            {
                if (Students[i].Ball < 30)
                {
                    Students[i].Ball = 1;
                }
                else if (Students[i].Ball <= 60)
                {
                    Students[i].Ball = 2;
                }
                else if (Students[i].Ball < 74)
                {
                    Students[i].Ball = 3;
                }
                else if (Students[i].Ball < 90)
                {
                    Students[i].Ball = 4;
                }
                else if (Students[i].Ball <= 100)
                {
                    Students[i].Ball = 5;
                }
            }
            mutexObj.ReleaseMutex();    // // звільняєм мютекс
        }
    }

    class Program
    {
        static void Main()
        {
            try
            {
                int size = 10;
                StudentServices student = new StudentServices(size);
                student.Input();
                student.Output();
                student.Trunsver();
                student.Output();

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.ReadKey();
        }
    }
}