private byte[] ProcessImage(UploadImageModel model, string fileName)
{
using var fileStream = model.File.OpenReadStream();
byte[] bytes = new byte[model.File.Length];
fileStream.Read(bytes, 0, (int)model.File.Length);
using (MemoryStream inStream = new MemoryStream(bytes))
{
var img = Image.FromStream(inStream);
var scaledImage = img.SetResizeResolution(model.Width, model.XDpi, model.YDpi);
if (!string.IsNullOrEmpty(model.WatermarkText))
{
scaledImage = scaledImage.SetWatermarkText(model.WatermarkText);
}
if (!string.IsNullOrEmpty(model.BackGroundColor))
{
scaledImage = scaledImage.SetBackgroundColor(model.BackGroundColor);
}
var processedImage = Helper.ImageToByteArray(scaledImage, fileName);
_cache.Set(model.ToString(), processedImage);
WriteFile(processedImage, fileName);
return(processedImage);
}
}
public IActionResult Upload([FromForm] UploadImageModel model)
{
if (!ModelState.IsValid)
{
return(BadRequest(new { message = "Required parameters are missing" }));
}
if (!CheckIfImageFile(model.File))
{
return(BadRequest(new { message = "Invalid file extension" }));
}
var fileName = DateTime.Now.Ticks + model.Extension;
var extension = "." + model.File.FileName.Split('.')[model.File.FileName.Split('.').Length - 1];
var contentType = Helper.GetFileContentType(extension);
var data = _cache.Get(model.ToString());
if (data == null)
{
var processedImage = ProcessImage(model, fileName);
return(Ok(File(processedImage, contentType, fileName)));
}
return(Ok(File(data, contentType, fileName)));
}