//GET: api/Call
/// <summary>
/// Gets query as a string (response from LUIS) and intent type then sends the data to the ICB API
/// </summary>
/// <returns>ResponceData object</returns>
private async Task <KPIApiResponse> GetFromApiAsync(string actualQuery, string intent)
{
HttpClient client = new HttpClient();
string url = Credentials.API_URL;
if (intent == "MachineRequestData")
{
url += "Machine/Last";
}
else
{
url += "KPI/Last";
}
client.DefaultRequestHeaders.Add(Credentials.API_HEADER, Credentials.API_ID);
HttpResponseMessage message = await client.PostAsync(url, new StringContent(actualQuery, Encoding.UTF8, "application/json"));
if (!message.IsSuccessStatusCode)
{
throw new Exception($"Request from ICB API failed with status code {message.StatusCode}");
}
string jsonResponce = await message.Content.ReadAsStringAsync();
if (jsonResponce == "[]")
{
throw new Exception("No existing data for the query!");
}
KPIApiResponse topIntent = JObject.Parse(jsonResponce.Trim('"', '"').Trim('[', ']')).ToObject <KPIApiResponse>();
return(topIntent);
}
/// <summary>
/// Gets user request, sends it to LUIS, gets data from ICB API and returns the final answer
/// </summary>
/// <param name="userRequestMessage">user message</param>
// <returns>API response message</returns>
public async Task <string> ProcessText(string userRequestMessage)
{
LuisResponse luisResponseData;
TopScoringIntent processedIntent = new TopScoringIntent();
KPIApiResponse responseFromAPI = new KPIApiResponse();
string queryForAPI;
try
{
luisResponseData = (await this.GetFromLuisAsync(userRequestMessage));
queryForAPI = ConstructQueryHelper(luisResponseData);
processedIntent = luisResponseData.TopScoringIntent;
responseFromAPI = await this.GetFromApiAsync(queryForAPI, processedIntent.Intent);
}
catch (Exception ex)
{
if (ex is NullReferenceException)
{
return("Can't proccess the query, ICB API can't find data for the query!");
}
return(ex.Message);
}
string entity;
string entityID;
string partNumber = string.Empty;
string responseValue = responseFromAPI.Value;
if (processedIntent.Intent == "MachineRequestData")
{
MachineRequestData machineRequestObj = JsonConvert.DeserializeObject <MachineRequestData>(queryForAPI);
entity = machineRequestObj.Type;
entityID = machineRequestObj.SensorID;
}
else
{
KPIRequestDataWithPart kpiRequestObj = JsonConvert.DeserializeObject <KPIRequestDataWithPart>(queryForAPI);
entity = kpiRequestObj.KpiType;
entityID = kpiRequestObj.WorkOrder;
if (kpiRequestObj.Part != string.Empty && kpiRequestObj.Part != null)
{
partNumber = kpiRequestObj.Part;
}
}
string result = string.Format("The {0} of {1}{2} is {3}.",
entity,
entityID,
(partNumber != string.Empty) ? (" of part " + partNumber) : "",
responseValue
);
return(result);
}
