// Calls the LUIS service
private static async Task <LUISResult> CallLUISAsync(string content,
// Your app appID
string appID = "af554cfd-af68-4c5d-b1b0-154e5e1e668d",
// Your subscription key
string subscriptionKey = "5d0d0e0f9572469ca415f52d332fa1f7")
{
string uri = string.Format(LUISEndpoint, appID, subscriptionKey, content);
string json = null;
HttpClient client = new HttpClient();
LUISResult result = new LUISResult();
client.BaseAddress = new Uri(uri);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage message = await client.GetAsync(uri);
if (message.IsSuccessStatusCode)
{
json = await message.Content.ReadAsStringAsync();
JsonTextReader reader = new JsonTextReader(new StringReader(json));
while (reader.Read())
{
// Gets the top scoring intent
if (reader.Path == "topScoringIntent.intent" && reader.TokenType.ToString() == "String")
{
result.Intent = reader.Value.ToString();
}
// Gets the top scoring intent score
else if (reader.Path == "topScoringIntent.score" && reader.TokenType.ToString() == "Float")
{
result.Score = float.Parse(reader.Value.ToString());
}
}
}
return(result);
}
// Analysis of tweet for all other attributes
private static async Task <TwitterResult> ProcessTwitter(string content)
{
if (string.IsNullOrEmpty(content))
{
return(null);
}
var result = new TwitterResult();
var matchURL = urlRegex.Match(content);
if (matchURL.Success)//determine if tweet contains a URL
{
result.ContainsURL = true;
Uri uri = null;
Uri.TryCreate(matchURL.Value, UriKind.Absolute, out uri);
Uri sourceUri = null;
if (uri != null)
{
if (uri.Host.Equals("t.co"))//shortened URL version in twitter
{
sourceUri = new Uri(GetSourceUri(uri.AbsoluteUri));
}
else
{
sourceUri = uri;
}
if (microsoftUrlKeywords.Any(m => sourceUri.Host.ToLower().Contains(m)))
{
result.IsMicrosoftURL = true;
}//consider scenario when URL is azure-specific but doesn't contain azure keywords
else
{
string title = GetTitleFromUri(sourceUri.AbsoluteUri);//looks if webpage title contains "Microsoft" or "Azure" and not a competitor
if (microsoftUrlKeywords.Any(m => title.ToLower().Contains(m)) && !competitorRegex.Match(title).Success)
{
result.IsMicrosoftURL = true;
}
}
}
}
// Determines presence of other attributes
if (azureRegex.Match(content).Success)
{
result.ContainsAzure = true;
}
if (promotionRegex.Match(content).Success)
{
result.ContainsKeyword = true;
}
if (competitorRegex.Match(content).Success)
{
result.MentionsCompetitors = true;
}
if (benefitRegex.Match(content).Success)
{
result.ContainsBenefit = true;
}
if (content.Contains("?"))
{
result.ContainsQuestionMark = true;
}
if (content.Contains(":"))
{
result.ContainsColon = true;
}
if (content.Contains("!"))
{
result.ContainsExclamation = true;
}
LUISResult lresult = await CallLUISAsync(content);
result.Intent = lresult.Intent;
result.IntentScore = lresult.Score;
return(result);
}
