using Microsoft.AspNetCore.Mvc;

namespace HTTP2FileStreams;

[ApiController]
[Route("api/[controller]")]
public class UploadController : ControllerBase
{
    [HttpPost]
    [DisableFormValueModelBinding]
    public async Task<IActionResult> Upload()
    {
        var fileName = Request.Headers["X-File-Name"].ToString();
        if (string.IsNullOrEmpty(fileName))
            return BadRequest("File name header is missing");

        fileName = Uri.UnescapeDataString(fileName);
        
        if (!Directory.Exists("Uploads"))
            Directory.CreateDirectory("Uploads");
        
        var filePath = Path.Combine("Uploads", fileName);
        await using var fileStream = System.IO.File.Create(filePath);
        await Request.Body.CopyToAsync(fileStream);

        return Ok(new { 
            fileName, 
            size = fileStream.Length 
        });
    }
}