public async Task <IActionResult> GetImageResource(
[FromRoute, Required] string id,
[FromHeader(Name = "If-None-Match")] string etag)
{
if (string.IsNullOrEmpty(id) || !Guid.TryParse(id, out var guid))
{
Logger.LogTrace("Not Found: No Id Specified!");
return(FormattedNotFound("No Id specified!"));
}
var ret = await _resourceModel.GetImageResource(guid);
var resourceInfo = ret.Item1;
var stream = ret.Item2;
if (resourceInfo == null)
{
Logger.LogError("Not Found: Could not found requested Resource");
return(FormattedNotFound("Could not found requested Resource"));
}
if (resourceInfo.ETag.Equals(etag))
{
return(FormattedNotModified());
}
SetCacheControlHeadersToNoCache();
Response.Headers.Add("Content-Disposition", $"inline; filename=\"{WebUtility.HtmlEncode(resourceInfo.Name)}\"");
Response.Headers.Add("Content-Type", resourceInfo.ContentType.ToString());
Response.Headers.Add("Content-Length", resourceInfo.Size.ToString());
Response.Headers.Add("ETag", resourceInfo.ETag);
return(new FileStreamResult(stream, resourceInfo.ContentType.ToString()));
}
