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 { GBError } from "botlib";
import { GBERROR_TYPE } from "botlib";
import { GBMinInstance } from "botlib";
import { LuisRecognizer } from "botbuilder-ai";
import { MessageFactory } from "botbuilder";
import { resolve } from "bluebird";

export class GBConversationalService implements IGBConversationalService {

    coreService: GBCoreService;

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

    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> {

        const model = new LuisRecognizer({
            appId: min.instance.nlpAppId,
            subscriptionKey: min.instance.nlpSubscriptionKey,
            serviceEndpoint: min.instance.nlpServerUrl
        });

        let res = await model.recognize(dc.context);

        // Resolve 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);
        }
    }
}