botserver/deploy/core.gbapp/services/GBConversationalService.ts

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"use strict"

const logger = require("../../../src/logger")

import { GBCoreService } from "./GBCoreService"
import { IGBConversationalService } from "botlib"
import { GBMinInstance } from "botlib"
import { LuisRecognizer } from "botbuilder-ai"
import { MessageFactory } from "botbuilder"

export interface LanguagePickerSettings {
  defaultLocale?: string
  supportedLocales?: string[]
}

export class GBConversationalService implements IGBConversationalService {
  coreService: GBCoreService

  constructor(coreService: GBCoreService) {
    this.coreService = coreService
  }

  getCurrentLanguage(dc: any) {
    return dc.context.activity.locale
  }

  async sendEvent(dc: any, name: string, value: any): Promise<any> {
    const msg = MessageFactory.text("")
    msg.value = value
    msg.type = "event"
    msg.name = name
    return dc.context.sendActivity(msg)
  }

  async runNLP(dc: any, min: GBMinInstance, text: string): Promise<any> {
    // Invokes LUIS.

    const model = new LuisRecognizer({
      appId: min.instance.nlpAppId,
      subscriptionKey: min.instance.nlpSubscriptionKey,
      serviceEndpoint: min.instance.nlpServerUrl
    })
    let res = await model.recognize(dc.context)

    // Resolves intents returned from LUIS.

    let topIntent = LuisRecognizer.topIntent(res)
    if (topIntent) {
      var intent = topIntent
      var entity =
        res.entities && res.entities.length > 0
          ? res.entities[0].entity.toUpperCase()
          : null
      logger.info("luis: intent: [" + intent + "] entity: [" + entity + "]")

      try {
        await dc.replace("/" + intent)
      } catch (error) {
        logger.info("error: intent: [" + intent + "] error: [" + error + "]")
        await dc.context.sendActivity(
          "Desculpe-me, não encontrei nada a respeito..."
        )
        await dc.replace("/ask", { isReturning: true })
      }

      return Promise.resolve({ intent, entities: res.entities })
    } else {
      await dc.context.sendActivity("Lamento, não achei nada a respeito...")
      await dc.replace("/ask", { isReturning: true })

      return Promise.resolve(null)
    }
  }
}