public async Task <ClientImageModel> DownloadLatest(ImageQuality quality)
{
FileModel file = await service.FindLatestImageAsync();
Stream content = file.Content.AsStreamForRead();
switch (quality)
{
case ImageQuality.Full:
break;
case ImageQuality.Medium:
int width = 600;
content = await ResizeImage(content, width, 0);
break;
case ImageQuality.Thumbnail:
width = 200;
content = await ResizeImage(content, width, 0);
break;
default:
throw new NotSupportedException(quality.ToString());
}
BitmapImage image = new BitmapImage();
await image.SetSourceAsync(content.AsRandomAccessStream());
return(new ClientImageModel()
{
Image = image,
Stream = content,
Date = file.CreatedAt
});
}
public async Task <bool> TryHandleAsync(HttpRequest request, HttpResponse response)
{
if (request.Method == "POST")
{
if (request.Path == "/start")
{
captureService.Start();
response.StatusCode = 200;
}
else if (request.Path == "/stop")
{
captureService.Stop();
response.StatusCode = 200;
}
else if (request.Path == "/status")
{
StatusResponse output = new StatusResponse();
lock (lastCaptureErrorLock)
{
output.Running = captureService.IsRunning;
output.LastError = lastCaptureError;
lastCaptureError = null;
}
response.Output.WriteLine(JsonConvert.SerializeObject(output));
response.StatusCode = 200;
}
else if (request.Path == "/latest")
{
FileModel file = await captureService.FindLatestImageAsync();
if (file == null)
{
response.StatusCode = 404;
}
else
{
ImageQuality quality = GetImageQuality(request);
string fileEtag = file.CreatedAt.ToString("yyyyMMddHHmmss") + quality;
string etag;
if (request.Headers.TryGetValue("If-None-Match", out etag) && fileEtag == etag)
{
response.StatusCode = 304;
return(true);
}
response.StatusCode = 200;
response.Headers["Content-Type"] = "image/jpeg";
response.Headers["Date"] = file.CreatedAt.ToString("yyyy-MM-dd HH:mm:ss");
response.Headers["ETag"] = fileEtag;
Stream content = file.Content.AsStreamForRead();
switch (quality)
{
case ImageQuality.Full:
break;
case ImageQuality.Medium:
int width = 600;
content = await ResizeImage(content, width, 0);
break;
case ImageQuality.Thumbnail:
width = 200;
content = await ResizeImage(content, width, 0);
break;
default:
throw new NotSupportedException(quality.ToString());
}
await content.CopyToAsync(response.Output.BaseStream);
file.Content.Dispose();
}
}
}
return(true);
}
