using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace NajteziZadatak
{
    class Program
    {

        static int k=1;
        static int red1 = 0;
        static int red2 = 0;
        static int red3 = 0;
        static int cenaKarata=40;
        static int ukupnoProdatih = 0;
        static int ukupnaZarada=0;
        static int ukupanbrojkupaca = 0;
        static readonly object locker = new object();
        static readonly object locker2 = new object();
        static readonly object locker3 = new object();

        static void kasa1()
        {
            lock(locker)
            {
                red1++;
                ukupanbrojkupaca++;
                red1--;
            }
        }
        static void kasa2()
        {
            lock(locker2)
            {
                red2++;
                ukupanbrojkupaca++;
                red2--;
            }
        }
        static void kasa3()
        {
            lock(locker3)
            {

                red3++;
                ukupanbrojkupaca++;
                red3--;
            }
        }
        static int minimal()
        {
            Random r = new Random();
            if (red1 < red2 && red1 < red3)
                return 1;
            else if (red2 < red1 && red2 < red3)
                return 2;
            else if (red3 < red1 && red3 < red2)
                return 3;
            else if (red3 == red2 && red2 == red1 && red3 == red1)
                return r.Next(1, 3);
            else
                return 100;
        }
        static int Popust(int cena,int brojtrenutnihkarata)
        {
            if (brojtrenutnihkarata > 2)
            {
                cena = Convert.ToInt32(cena * 0.90);
                return cena;
            }
            else if (brojtrenutnihkarata > 3)
            {
                cena = Convert.ToInt32(cena * 0.85);
                return cena;
            }
            else return cena;
        }
        static void Kupac()
        {
            Random r = new Random();
            int brojKupljenih = (r.Next(1, 6));
            string ime = Thread.CurrentThread.Name;
            Console.WriteLine(ime + " je kupio " + brojKupljenih);
            int cena = cenaKarata;
            int najmanjired = minimal();
            ukupnaZarada += cena*brojKupljenih;
            ukupnoProdatih += brojKupljenih;
            {
                kasa1();
            }
            if(najmanjired==2)
            {
                kasa2();
            }
            if(najmanjired==3)
            {
                kasa3();
            }
        }
        static void vremeradaPozorista()
        {
            Thread.Sleep(1000);
            cenaKarata = Convert.ToInt32(cenaKarata * 0.95);
            Thread.Sleep(1000);
            cenaKarata = Convert.ToInt32(cenaKarata * 0.95);
            Thread.Sleep(1000);
            cenaKarata = Convert.ToInt32(cenaKarata * 0.95);
            Thread.Sleep(1000);
            cenaKarata = Convert.ToInt32(cenaKarata * 0.95);
            Thread.Sleep(1000);
            cenaKarata = Convert.ToInt32(cenaKarata * 0.95);
            Thread.Sleep(1000);
            cenaKarata = Convert.ToInt32(cenaKarata * 0.95);
            Thread.Sleep(1000);
            k++;
        }
        static void Main(string[] args)
        {
            Thread radKase = new Thread(() => vremeradaPozorista());radKase.Start();
            int i = 1;
            while(k==1)
            {
                Thread nit = new Thread(() => Kupac());nit.Name = "Kupac_" + i; ;nit.Start();
                i++;
                Thread.Sleep(140);
            }

            Console.ReadLine();
            Console.WriteLine("Pozoriste zatvoreno");
            Console.WriteLine("Karta prodatih:"+ ukupnoProdatih);
            Console.WriteLine("Para zaradjeno:" + ukupnaZarada);
        }
    }
}