using System.Net.Sockets;
using System.Text;
using Microsoft.AspNetCore.Mvc;

namespace StitchImg;

[ApiController]
[Route("api/image")]
public class ImageController : ControllerBase
{
  [HttpPost("generate")]
  public async Task<IActionResult> Generate([FromBody] ImageSpecification specification)
  {
    var serverIp = "127.0.0.1";
    var port = 8080;

    var tcpClient = new TcpClient();
    await tcpClient.ConnectAsync(serverIp, port);
    NetworkStream networkStream = tcpClient.GetStream();
    var writer = new BinaryWriter(networkStream);
    
    string rect = specification.CanvasRect;
    byte[] rectBytes = Encoding.UTF8.GetBytes(rect);
    writer.Write((ushort)rectBytes.Length);
    writer.Write(rectBytes);
    writer.Write(specification.CropOffset[0]);
    writer.Write(specification.CropSize[0]);
    writer.Write(specification.CropOffset[1]);
    writer.Write(specification.CropSize[1]);
    writer.Write(specification.OutputScale);
    writer.Flush();
    
    return  File( networkStream, "image/png"); 
  }
}