Uri IQnAService.BuildRequest(string queryText, out QnAMakerRequestBody postBody, out string subscriptionKey)
{
var knowledgebaseId = this.qnaInfo.KnowledgebaseId;
var builder = new UriBuilder($"{UriBase}/{knowledgebaseId}/generateanswer");
postBody = new QnAMakerRequestBody {
question = queryText, top = this.qnaInfo.Top
};
subscriptionKey = this.qnaInfo.SubscriptionKey;
return(builder.Uri);
}
async Task <QnAMakerResults> IQnAService.QueryServiceAsync(Uri uri, QnAMakerRequestBody postBody, string subscriptionKey)
{
string json;
using (WebClient client = new WebClient())
{
//Set the encoding to UTF8
client.Encoding = Encoding.UTF8;
//Add the subscription key header
client.Headers.Add("Ocp-Apim-Subscription-Key", subscriptionKey);
client.Headers.Add("Content-Type", "application/json");
json = client.UploadString(uri, JsonConvert.SerializeObject(postBody));
}
try
{
var qnaMakerResults = JsonConvert.DeserializeObject <QnAMakerResults>(json);
//Adding internal service cfg reference [used when checking configured threshold to provide an answer]
qnaMakerResults.ServiceCfg = this.qnaInfo;
var filteredQnAResults = new List <QnAMakerResult>();
foreach (var qnaMakerResult in qnaMakerResults.Answers)
{
qnaMakerResult.Score /= 100;
if (qnaMakerResult.Score >= this.qnaInfo.ScoreThreshold)
{
qnaMakerResult.Answer = HttpUtility.HtmlDecode(qnaMakerResult.Answer);
qnaMakerResult.Questions = qnaMakerResult.Questions.Select(x => HttpUtility.HtmlDecode(x)).ToList();
filteredQnAResults.Add(qnaMakerResult);
}
}
qnaMakerResults.Answers = filteredQnAResults;
return(qnaMakerResults);
}
catch (JsonException ex)
{
throw new ArgumentException("Unable to deserialize the QnA service response.", ex);
}
}