using System.Diagnostics;
using BenchmarkDotNet.Attributes;
using Microsoft.Extensions.Logging.Abstractions;
using OpenCvSharp;
using StitchATon.Services;

namespace StitchATon.Bench;

public class Program
{
  static readonly ImageProvider Ip = new ( new ImageProvider.Config( 
                                             "/home/retorikal/Downloads/tiles1705/", 
                                             720,
                                             55,
                                             31),
                                           NullLogger<ImageProvider>.Instance );
  // static ImageProvider ip = new ( "/mnt/ramdisk/" );
  
  static async Task Fn1()
  {
    using var im = await Ip.GetImage(
      new Rect( new Point( 0, 0 ), new Size( 2, 1 ) ),
      new Point2f( 0, 0 ),
      new Point2f( 1, 1 ) );
    // Cv2.ImEncode(".png", im, out _);
    Cv2.ImWrite("/tmp/im1.png", im );
  }

  static async Task Fn2()
  {
    using var im = await Ip.GetImage(
      new Rect( new Point( 1, 1 ), new Size( 3, 3 ) ),
      new Point2f( 0, 0 ),
      new Point2f( 1, 1 ) );
    // Cv2.ImEncode(".png", im, out _);
    // Cv2.ImWrite("/tmp/im2.png", im2 );
  }
  
  static async Task Fn3()
  {
    using var im = await Ip.GetImage(
      new Rect( new Point( 2, 2 ), new Size( 3, 3 ) ),
      new Point2f( 0.2f, 0.2f ),
      new Point2f( .6f, .6f ) );
    // Cv2.ImEncode(".png", im, out _);
    // Cv2.ImWrite("/tmp/im3.png", im3 );
  }
  
  static async Task Fn4()
  {
    using var im = await Ip.GetImage(
      new Rect( new Point( 0, 0 ), new Size( 10, 10 ) ),
      new Point2f( 0.2f, 0.2f ),
      new Point2f( .6f, .6f ) );
    // Cv2.ImEncode(".png", im, out _);
    // Cv2.ImWrite("/tmp/im4.png", im4 );
  }

  
  // [Benchmark]
  static async Task Conc()
  {
    await Task.WhenAll(
      Fn1(),
      Fn2(),
      Fn3(),
      Fn4()
    );
  }
  
  // [Benchmark]
  static async Task Serial()
  {
    await Fn1();
    await Fn2();
    await Fn3();
    await Fn4();
  }

  public static ProcessStartInfo MkfifoPs = new("mkfifo", "/tmp/out.png");
  public static ProcessStartInfo RmfifoPs = new("rm", "/tmp/out.png");
  
  [Benchmark]
  public void Mkfifo()
  {
    Process.Start( MkfifoPs )?.WaitForExit();
    Process.Start( RmfifoPs )?.WaitForExit();
  }
  
  public async static Task Main( string[] args )
  {

    await Fn1();
    // var summary = BenchmarkRunner.Run<Program>();
    // var stopwatch = Stopwatch.StartNew();
    //
    //
    // stopwatch.Stop();
    // Console.WriteLine( $"Elapsed time: {stopwatch.ElapsedMilliseconds} ms" );
    //
    // var stopwatchAfter = Stopwatch.StartNew();
    // await Fn4();
    // stopwatchAfter.Stop();
    // Console.WriteLine( $"Elapsed time: {stopwatchAfter.ElapsedMilliseconds} ms" );
  }
}