bot.js

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

const { ActivityTypes } = require('botbuilder');
const { MyAppInsightsQnAMaker } = require('./myAppInsightsQnAMaker');

/**
 * A simple QnA Maker bot that responds to queries and uses custom middleware to send telemetry data to Application Insights.
 */
class QnAMakerBot {
    /**
     * The QnAMakerBot constructor requires one argument (`endpoint`) which is used to create a MyAppInsightsQnAMaker singleton.
     * @param endpoint In this sample the QnA Maker endpoint configuration is retrieved from the .bot file
     * @param config An optional parameter that contains additional settings for configuring a `QnAMaker` instance.
     * @param logOriginalMessage a boolean indicating whether or not the bot should send the user's utterance to Application Insights with the QnA Maker information.
     * @param logUserName a boolean indicating whether or not the bot should send the username to Application Insights with the QnA Maker information.
     */
    constructor(endpoint, config, logOriginalMessage = false, logUserName = false) {
        this.qnaMaker = new MyAppInsightsQnAMaker(endpoint, config, logOriginalMessage, logUserName);
    }
    /**
     * Every conversation turn for our QnA Bot will call this method.
     * There are no dialogs used, since it's "single turn" processing, meaning a single
     * request and response, with no stateful conversation.
     * @param {TurnContext} turnContext A TurnContext instance containing all the data needed for processing this conversation turn.
     */
    async onTurn(turnContext) {
        // By checking the incoming activity's type, the bot only calls QnA Maker in appropriate cases.
        if (turnContext.activity.type === ActivityTypes.Message) {
            // Perform a call to the QnA Maker service to retrieve any potentially matching Question and Answer pairs.
            const qnaResults = await this.qnaMaker.generateAnswer(turnContext);

            if (qnaResults[0]) {
                // If an answer was received from QnA Maker, send the answer back to the user.
                await turnContext.sendActivity(qnaResults[0].answer);
            } else {
                // If no answers were returned from QnA Maker, reply to the user with examples of valid questions.
                await turnContext.sendActivity('No QnA Maker answers were found. This example uses a QnA Maker Knowledge Base that focuses on smart light bulbs. To see QnA Maker in action, ask the bot questions like "Why won\'t it turn on?" or say something like "I need help."');
            }
        } else if (turnContext.activity.type === ActivityTypes.ConversationUpdate &&
            turnContext.activity.recipient.id !== turnContext.activity.membersAdded[0].id) {
            // If the Activity is a ConversationUpdate, send a greeting message to the user.
            await turnContext.sendActivity(`Welcome to the QnA Maker sample! Ask me a question and I will try to answer it.`);
        } else if (turnContext.activity.type !== ActivityTypes.ConversationUpdate) {
            // Respond to all other Activity types.
            await turnContext.sendActivity(`[${ turnContext.activity.type }]-type activity detected.`);
        }
    }
}
exports.QnAMakerBot = QnAMakerBot;