using System;
using System.Diagnostics;
using System.IO;
using System.Security.Cryptography;
using ZstdSharp;
using ZstdSharp.Unsafe;

namespace zstdtestByteType
{
    internal class Program
    {
        static void Main(string[] args)
        {
            byte[] mIn = File.ReadAllBytes("test1.in");

            for (int l = 0; l < 100; l++)
            {
                int numberOfWorkers = 8;
                Stopwatch sw = new Stopwatch();
                sw.Start();
                Console.WriteLine($"Testing with {numberOfWorkers} threads");


                using (MemoryStream sOut = new MemoryStream())
                {
                    Compressor c = new Compressor(1);
                    c.SetParameter(ZSTD_cParameter.ZSTD_c_nbWorkers, numberOfWorkers);
                    using (var zOut = new ZstdSharp.CompressionStream(sOut, c))
                    {
                        zOut.Write(mIn, 0, mIn.Length);

                        // Remove this Flush and the problem goes away.
                        zOut.Flush();
                        zOut.Close();
                    }

                    sw.Stop();
                    Console.WriteLine($"Time: {sw.ElapsedMilliseconds}ms");
                    byte[] mOut = sOut.ToArray();
                    Console.WriteLine($"Output Length {mOut.Length}");

                    byte[] last6 = new byte[6];
                    for (int j = 0; j < 6; j++)
                        last6[j] = mOut[mOut.Length - 6 + j];

                    if (last6[3] == 1 && last6[4] == 0 && last6[5] == 0)
                        Console.ForegroundColor = ConsoleColor.Green;
                    else
                        Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine($"Last 6 byte {BitConverter.ToString(last6)}");


                    using (SHA1 sha1 = SHA1.Create())
                    {
                        sha1.TransformFinalBlock(mOut, 0, mOut.Length);
                        Console.WriteLine($"Output SHA1 {BitConverter.ToString(sha1.Hash).Replace("-", "")}\n");
                    }
                    Console.ForegroundColor = ConsoleColor.White;
                }
            }
        }
    }
}