using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Columns;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Diagnosers;
using BenchmarkDotNet.Reports;
using BenchmarkDotNet.Running;
using Perfolizer.Horology;
using System;
using System.Globalization;
using System.IO;
using System.Security.Cryptography;

[MemoryDiagnoser]
public class Program
{
    public static void Main(string[] args) =>
        BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args,
            DefaultConfig.Instance.WithSummaryStyle(new SummaryStyle(CultureInfo.InvariantCulture,
                printUnitsInHeader: false, sizeUnit: SizeUnit.B, timeUnit: TimeUnit.Nanosecond, printZeroValuesInContent: true)));

    private byte[] _data = RandomNumberGenerator.GetBytes(10_000_000);
    private MemoryStream _destination = new MemoryStream();

    [Benchmark]
    public void Encode()
    {
        _destination.Position = 0;
        using (var toBase64 = new ToBase64Transform())
        using (var stream = new CryptoStream(_destination, toBase64, CryptoStreamMode.Write, leaveOpen: true))
        {
            Span<byte> remaining = _data;
            while (!remaining.IsEmpty)
            {
                Span<byte> toWrite = remaining.Slice(0, Math.Min(4096, remaining.Length));
                stream.Write(toWrite);
                remaining = remaining.Slice(toWrite.Length);
            }
        }
    }
}