private async Task <IList <TextRecognitionResult> > AnalyzePhoto(MediaFile photo)
{
try
{
var stream = photo.GetStream();
var headers = await computerVisionClient.BatchReadFileInStreamAsync(stream);
var operationPath = new Uri(headers.OperationLocation);
var operationId = operationPath.Segments[operationPath.Segments.Length - 1];
for (int i = 0; i < 5; i++)
{
await Task.Delay(TimeSpan.FromSeconds(2));
var httpRequestResponse = await computerVisionClient.GetReadOperationResultWithHttpMessagesAsync(operationId);
if (httpRequestResponse.Response.IsSuccessStatusCode)
{
var result = httpRequestResponse.Body;
switch (result.Status)
{
case TextOperationStatusCodes.NotStarted:
case TextOperationStatusCodes.Running:
break;
case TextOperationStatusCodes.Succeeded:
return(result.RecognitionResults);
case TextOperationStatusCodes.Failed:
default:
Help.Log.Error("CogServices Error Code Returned");
return(null);
}
}
if (i == 4)
{
Help.Log.Error("CogServices Timeout");
}
}
}
catch (Exception ex)
{
Help.Log.Exception(ex);
}
return(null);
}
