PortfolioLink/backend/Controllers/ExcelUpload.cs

using Microsoft.AspNetCore.Mvc;

namespace backend.Controllers
{
    [Route("api/excelupload")]
    [ApiController]
    public class ExcelUpload : ControllerBase
    {
        private readonly IConfiguration _config;


        public ExcelUpload(IConfiguration config)
        {
            _config = config;
        }

        [HttpPost]
        public void ProcessUpload(IFormFile file)
        {
            // TODO : Add some header validation to make sure it comes from a real user
            if (file == null)
            {
                Console.WriteLine("fail: FILE IS NULL");
                return;
            }

            string dataFileName = Path.GetFileName(file.FileName);
            
            string curDate = DateTime.Now.ToString("u");

            string saveToPath = Path.Combine(_config.GetValue<string>("UploadSavePath"), curDate + '_' + dataFileName);

            using (FileStream stream = new FileStream(saveToPath, FileMode.Create))
            {
                file.CopyTo(stream);
                Console.WriteLine($"Saved to {saveToPath}.");
            }

        }

    }
}