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

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"use strict";

const UrlJoin = require("url-join");
const gBuilder = require("botbuilder");
const logger = require("../../../src/logger");

import { GBConfigService } from "./GBConfigService";
import { GBCoreService } from "./GBCoreService";

import { Session, Message, LuisRecognizer } from "botbuilder";

import { GBService, GBServiceCallback, IGBConversationalService } from "botlib";
import { GBError } from "botlib";
import { GBERROR_TYPE } from "botlib";
import { GBMinInstance } from "botlib";


export class GBConversationalService implements IGBConversationalService {

    coreService: GBCoreService;

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

    sendEvent(session: Session, name: string, value: any) {
        var msg = new gBuilder.Message();
        msg.data.type = "event";
        msg.data.name = name;
        msg.data.value = value;
        session.send(msg);
    }

    runNLP(
        session: Session,
        min: GBMinInstance,
        text: string,
        cb: GBServiceCallback<any>
    ) {
        LuisRecognizer.recognize(
            text,
            min.instance.nlpServerUrl,
            (err, intents, entities) => {
                if (err) {
                    cb(null, new GBError(err, GBERROR_TYPE.nlpGeneralError));
                    return;
                }

                if (intents && intents.length > 0) {
                    var intent = intents[0].intent;
                    var entity =
                        entities && entities.length > 0
                            ? entities[0].entity.toUpperCase()
                            : null;
                    logger.trace(
                        "luis: intent: [" + intent + "] entity: [" + entity + "]"
                    );

                    // PACKAGE: Send to packages.

                    if (intent === "Student.CheckAttendance") {
                        session.replaceDialog("/belagua-check-attendance", { entities: entities });
                    }
                    else if (intent === 'User.Authenticate') {
                        session.replaceDialog("/belagua-user-login", { entities: entities });
                    }
                    else if (intent === "PerguntarSobreTermo") {
                        session.send(
                            "Vou mostrar um menu para ajudar você a formular sua pergunta..."
                        );
                        session.replaceDialog("/menu");
                    } else if (intent === "ShowSubjectMenu") {
                        session.replaceDialog("/menu");
                    } else {
                        try {
                            session.replaceDialog("/" + intent);
                        } catch (error) {
                            logger.trace("error: intent: [" + intent + "] error: [" + error + "]");
                            session.sendTyping();
                            session.send("Desculpe-me, não encontrei nada a respeito...");
                            session.replaceDialog("/ask", {isReturning: true});
                        }
                    }

                    cb({ intent, entities }, null);
                } else {
                    session.sendTyping();
                    session.send("Lamento, não achei nada a respeito...");
                    session.replaceDialog("/ask", {isReturning: true});
                    cb(null, null);
                }
            }
        );
    }
}