/// <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);
}
/// <summary>
/// Gets JSON (response data from LUIS) object and returns query as a string
/// </summary>
/// <param name="data">the response data from LUIS</param>
/// <returns></returns>
private string ConstructQueryHelper(LuisResponse data)
{
TopScoringIntent processedIntent = data.TopScoringIntent;
string actualQuery = string.Empty;
switch (processedIntent.Intent)//compose the query
{
case "None":
throw new Exception("Please paraphrase your question, couldn't understand what you meant!");
case "MachineRequestData":
List <Entity> machineEntities = data.Entities;
MachineRequestData machineRequest = new MachineRequestData();
machineRequest.SensorID = machineEntities.Find(e => e.Type == "MachineID").entity;
machineRequest.Type = machineEntities.Find(e => e.Type == "MachineRequestType").resolution.values[0];
actualQuery = JsonConvert.SerializeObject(machineRequest);
break;
default:
List <Entity> kpiEntities = data.Entities;
KPIRequestDataWithoutPart kpiRequestWithoutPart = new KPIRequestDataWithoutPart();
int buf;
kpiRequestWithoutPart.KpiType = processedIntent.Intent;
kpiRequestWithoutPart.WorkOrder = kpiEntities.Find(e => e.Type == "KPIworkOrderID" && int.TryParse(e.entity, out buf)).entity;
//get part entity
CompositeEntity kpiOrderPart = data.CompositeEntities.Find(e => (e.ParentType == "KPIrequestDataPart" && int.TryParse(e.Value, out buf)));
//filter request types without part
if (processedIntent.nonOrderQuery() && kpiOrderPart != null)
{
string kpiOrderPartValue = kpiOrderPart.Value;
if (kpiOrderPart != null)
{
string serializedKPIWithoutPart = JsonConvert.SerializeObject(kpiRequestWithoutPart);
KPIRequestDataWithPart kpiRequestWithPart = JsonConvert.DeserializeObject <KPIRequestDataWithPart>(serializedKPIWithoutPart);
kpiRequestWithPart.Part = kpiOrderPartValue;
actualQuery = JsonConvert.SerializeObject(kpiRequestWithPart);
break;
}
else
{
//couldn't find part value
throw new NullReferenceException("Couldn't find part value");
}
}
actualQuery = JsonConvert.SerializeObject(kpiRequestWithoutPart);
break;
}
return(actualQuery);
}