public ActionResult Index(string preset, string path)
{
if (string.IsNullOrEmpty(path))
{
return(HttpNotFound());
}
var imageFactory = new ImageFactory(preset, path);
if (!imageFactory.IsValid())
{
return(HttpNotFound());
}
var requestETag = GetETagFromRequest();
if (!imageFactory.HasChanged(requestETag))
{
return(new HttpStatusCodeResult(HttpStatusCode.NotModified));
}
try {
var imageResult = imageFactory.GetImageResult();
if (imageResult == null)
{
return(HttpNotFound());
}
SetETagForResponse(imageFactory.GetETag());
return(imageResult);
}
catch {
return(HttpNotFound());
}
}