/*****************************************************************************\
|                                               ( )_  _                       |
|    _ _    _ __   _ _    __    ___ ___     _ _ | ,_)(_)  ___   ___     _     |
|   ( '_`\ ( '__)/'_` ) /'_ `\/' _ ` _ `\ /'_` )| |  | |/',__)/' _ `\ /'_`\   |
|   | (_) )| |  ( (_| |( (_) || ( ) ( ) |( (_| || |_ | |\__, \| ( ) |( (_) )  |
|   | ,__/'(_)  `\__,_)`\__  |(_) (_) (_)`\__,_)`\__)(_)(____/(_) (_)`\___/'  |
|   | |                ( )_) |                                                |
|   (_)                 \___/'                                                |
|                                                                             |
| General Bots Copyright (c) Pragmatismo.io. All rights reserved.             |
| Licensed under the AGPL-3.0.                                                |
|                                                                             | 
| According to our dual licensing model, this program can be used either      |
| under the terms of the GNU Affero General Public License, version 3,        |
| or under a proprietary license.                                             |
|                                                                             |
| The texts of the GNU Affero General Public License with an additional       |
| permission and of our proprietary license can be found at and               |
| in the LICENSE file you have received along with this program.              |
|                                                                             |
| This program is distributed in the hope that it will be useful,             |
| but WITHOUT ANY WARRANTY; without even the implied warranty of              |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                |
| GNU Affero General Public License for more details.                         |
|                                                                             |
| "General Bots" is a registered trademark of Pragmatismo.io.                 |
| The licensing of the program under the AGPLv3 does not imply a              |
| trademark license. Therefore any rights, title and interest in              |
| our trademarks remain entirely with us.                                     |
|                                                                             |
\*****************************************************************************/

"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);
                }
            }
        );
    }
}