using System;
using System.Text;
using System.Threading;
using System.IO;

namespace zad1
{
    class Program
    {

        delegate long DelegateType(long arguments);
        static DelegateType delegateLong;

        static void Main(string[] args)
        {
            FileStream fs;
            Console.WriteLine("Zad6");
            byte[] buffer = new byte[128];
            using (fs = new FileStream("C:\\Users\\s0163841\\Desktop\\file.txt", FileMode.Open))
            {
                AutoResetEvent are = new AutoResetEvent(false);
                fs.BeginRead(buffer, 0, buffer.Length, AsyncCallback, new { Stream = fs, Data = buffer, AutoResetEvent = are });


                double q = 0.0001;
                for (int i = 0; i < 100000; i++)
                {
                    q *= 1.0001;
                }

                are.WaitOne();
                fs.Close();
            }


            Console.WriteLine("\n\nZad7");

            fs = new FileStream("C:\\Users\\s0163841\\Desktop\\file.txt", FileMode.Open);
            buffer = new byte[128];
            var state = fs.BeginRead(buffer, 0, buffer.Length, null, null);
            Console.WriteLine("State: " + state);

            double m = 0.0001;

            for (int i = 0; i < 100000; i++)
            {
                m *= 1.0001;
            }

            fs.EndRead(state);
            fs.Close();

            Console.WriteLine(Encoding.ASCII.GetString(buffer));



            Console.WriteLine("\n\nZad7");

            long result;
            IAsyncResult ar;

            long n = 50;


            //fibr
            delegateLong = new DelegateType(FibR);
            ar = delegateLong.BeginInvoke(n, null, null);
            result = delegateLong.EndInvoke(ar);
            Console.WriteLine("Fibr " + result);


            //fibi
            delegateLong = new DelegateType(FibI);
            ar = delegateLong.BeginInvoke(n, null, null);
            result = delegateLong.EndInvoke(ar);
            Console.WriteLine("Fibi " + result);

            //edgr
            delegateLong = new DelegateType(EdgR);
            ar = delegateLong.BeginInvoke(n, null, null);
            result = delegateLong.EndInvoke(ar);
            Console.WriteLine("EdgR " + result);

            //edgi
            delegateLong = new DelegateType(EdgI);
            ar = delegateLong.BeginInvoke(n, null, null);
            result = delegateLong.EndInvoke(ar);
            Console.WriteLine("EdgI " + result);


            Console.WriteLine("\nend");

            Console.ReadKey();
        }



        public static long FibR(long n)
        {
            if (n == 0)
            {
                return 0;
            }
            else if (n == 1)
            {
                return 1;
            }
            else
            {
                return (FibR(n - 1) + FibR(n - 2));
            }


        }

        public static long FibI(long n)
        {
            long a = 0;
            long b = 1;
            for (long i = 0; i < n; i++)
            {
                long temp = a;
                a = b;
                b = temp + b;
            }
            return a;
        }

        public static long EdgR(long number)
        {
            if (number <= 1)
                return 1;
            else
                return number + EdgR(number - 1);
        }

        public static long EdgI(long n)
        {
            if (n <= 1)
                return 1;
            long result = 1;
            for (long i = 2; i <= n; i++)
            {
                result = result + i;
            }
            return result;
        }

        static void ThreadProc(Object stateInfo)
        {

        }

        static void AsyncCallback(IAsyncResult state)
        {
            dynamic args = state.AsyncState;
            FileStream fs = args.Stream;
            byte[] data = args.Data;

            AutoResetEvent are = args.AutoResetEvent;

            int l = fs.EndRead(state); //drukowanie tegfo co zostało przeczytane
            Console.WriteLine(Encoding.ASCII.GetString(data));
            are.Set();
        }


    }
}