628 lines
23 KiB
TypeScript
628 lines
23 KiB
TypeScript
/*****************************************************************************\
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| ( )_ _ |
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| _ _ _ __ _ _ __ ___ ___ _ _ | ,_)(_) ___ ___ _ |
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| ( '_`\ ( '__)/'_` ) /'_ `\/' _ ` _ `\ /'_` )| | | |/',__)/' _ `\ /'_`\ |
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| | (_) )| | ( (_| |( (_) || ( ) ( ) |( (_| || |_ | |\__, \| (˅) |( (_) ) |
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| | ,__/'(_) `\__,_)`\__ |(_) (_) (_)`\__,_)`\__)(_)(____/(_) (_)`\___/' |
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| | | ( )_) | |
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| (_) \___/' |
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| |
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| General Bots Copyright (c) Pragmatismo.io. All rights reserved. |
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| Licensed under the AGPL-3.0. |
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| |
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| According to our dual licensing model, this program can be used either |
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| under the terms of the GNU Affero General Public License, version 3, |
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| or under a proprietary license. |
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| |
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| The texts of the GNU Affero General Public License with an additional |
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| permission and of our proprietary license can be found at and |
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| in the LICENSE file you have received along with this program. |
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| |
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| This program is distributed in the hope that it will be useful, |
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| but WITHOUT ANY WARRANTY, without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU Affero General Public License for more details. |
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| |
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| "General Bots" is a registered trademark of Pragmatismo.io. |
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| The licensing of the program under the AGPLv3 does not imply a |
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| trademark license. Therefore any rights, title and interest in |
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| our trademarks remain entirely with us. |
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| |
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\*****************************************************************************/
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/**
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* @fileoverview General Bots server core.
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*/
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'use strict';
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import urlJoin = require('url-join');
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const { DialogSet, TextPrompt } = require('botbuilder-dialogs');
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const express = require('express');
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const request = require('request-promise-native');
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const removeRoute = require('express-remove-route');
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const AuthenticationContext = require('adal-node').AuthenticationContext;
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const wash = require('washyourmouthoutwithsoap');
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import { AutoSaveStateMiddleware, BotFrameworkAdapter, ConversationState, MemoryStorage, UserState } from 'botbuilder';
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import { CollectionUtil } from 'pragmatismo-io-framework';
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import { ConfirmPrompt, WaterfallDialog } from 'botbuilder-dialogs';
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import {
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GBDialogStep,
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GBLog,
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GBMinInstance,
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IGBAdminService,
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IGBConversationalService,
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IGBCoreService,
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IGBInstance,
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IGBPackage
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} from 'botlib';
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import { MicrosoftAppCredentials } from 'botframework-connector';
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import { GBServer } from '../../../src/app';
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import { AskDialogArgs } from '../../kb.gbapp/dialogs/AskDialog';
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import { KBService } from '../../kb.gbapp/services/KBService';
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import { Messages } from '../strings';
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import { GBConfigService } from './GBConfigService';
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import { GBDeployer } from './GBDeployer';
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import { SecService } from '../../security.gblib/services/SecService';
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import { AnalyticsService } from '../../analytics.gblib/services/AnalyticsService';
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import { WhatsappDirectLine } from '../../whatsapp.gblib/services/WhatsappDirectLine';
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/**
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* Minimal service layer for a bot.
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*/
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export class GBMinService {
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public core: IGBCoreService;
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public conversationalService: IGBConversationalService;
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public adminService: IGBAdminService;
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public deployer: GBDeployer;
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private static uiPackage = 'default.gbui';
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public corePackage = 'core.gbai';
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/**
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* Static initialization of minimal instance.
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*
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* @param core Basic database services to identify instance, for example.
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*/
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constructor(
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core: IGBCoreService,
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conversationalService: IGBConversationalService,
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adminService: IGBAdminService,
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deployer: GBDeployer
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) {
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this.core = core;
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this.conversationalService = conversationalService;
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this.adminService = adminService;
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this.deployer = deployer;
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}
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/**
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*
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* Constructs a new minimal instance for each bot.
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*
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* @param server An HTTP server.
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* @param appPackages List of loaded .gbapp associated with this instance.
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*
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* @return Loaded minimal bot instance.
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*
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*/
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public async buildMin(
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instances: IGBInstance[],
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) {
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// Serves default UI on root address '/' if web enabled.
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if (process.env.DISABLE_WEB !== 'true') {
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let url = GBServer.globals.wwwroot ?
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GBServer.globals.wwwroot :
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urlJoin(GBDeployer.deployFolder, GBMinService.uiPackage, 'build');
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GBServer.globals.server.use('/', express.static(url));
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}
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// Serves the bot information object via HTTP so clients can get
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// instance information stored on server.
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if (process.env.DISABLE_WEB !== 'true') {
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GBServer.globals.server.get('/instances/:botId', (req, res) => {
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(async () => {
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await this.handleGetInstanceForClient(req, res);
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})();
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});
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}
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const url = '/webhooks/whatsapp';
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GBServer.globals.server.post(url, async (req, res) => {
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try {
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const id = req.body.messages[0].chatId.split('@')[0];
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const text = req.body.messages[0].body;
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if (req.body.messages[0].fromMe) {
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res.end();
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return; // Exit here.
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}
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let activeMin;
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if (process.env.WHATSAPP_WELCOME_DISABLED !== "true") {
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const toSwitchMin = GBServer.globals.minInstances.filter(p => p.botId === text)[0];
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activeMin = toSwitchMin ? toSwitchMin : GBServer.globals.minBoot;
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let sec = new SecService();
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let user = await sec.getUserFromPhone(id);
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if (user === null) {
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user = await sec.ensureUser(activeMin.instance.instanceId, id,
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activeMin.botId, id, "", "whatsapp", id, id);
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await (activeMin as any).whatsAppDirectLine.sendToDevice(id, `Olá! Seja bem-vinda(o)!\nMe chamo ${activeMin.instance.title}. Como posso ajudar?`);
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res.end();
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} else {
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// User wants to switch bots.
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if (toSwitchMin !== undefined) {
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await sec.updateCurrentBotId(id, text);
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await (activeMin as any).whatsAppDirectLine.sendToDevice(id, `Agora falando com ${activeMin.instance.title}...`);
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res.end();
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}
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else {
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activeMin = GBServer.globals.minInstances.filter(p => p.botId === user.currentBotId)[0];;
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(activeMin as any).whatsAppDirectLine.received(req, res);
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}
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}
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}
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else {
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(GBServer.globals.minBoot as any).whatsAppDirectLine.received(req, res);
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}
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} catch (error) {
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GBLog.error(`Error on Whatsapp callback: ${error.message}`);
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}
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});
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await Promise.all(
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instances.map(async instance => {
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// Gets the authorization key for each instance from Bot Service.
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await this.mountBot(instance);
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})
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);
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}
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public async unmountBot(botId: string) {
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const url = `/api/messages/${botId}`;
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removeRoute(GBServer.globals.server, url);
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const uiUrl = `/${botId}`;
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removeRoute(GBServer.globals.server, uiUrl);
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GBServer.globals.minInstances = GBServer.globals.minInstances.filter(p => p.botId !== botId);
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}
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public async mountBot(instance: IGBInstance) {
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// Build bot adapter.
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const { min, adapter, conversationState } = await this.buildBotAdapter(instance, GBServer.globals.sysPackages);
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if (GBServer.globals.minInstances.length === 0) {
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GBServer.globals.minBoot = min;
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}
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GBServer.globals.minInstances.push(min);
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// Install default BASIC module.
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// this.deployer.deployPackage(min, 'packages/default.gbdialog');
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// Call the loadBot context.activity for all packages.
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await this.invokeLoadBot(GBServer.globals.appPackages, GBServer.globals.sysPackages, min);
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// Serves individual URL for each bot conversational interface...
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const url = `/api/messages/${instance.botId}`;
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GBServer.globals.server.post(url, async (req, res) => {
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await this.receiver(adapter, req, res, conversationState, min, instance, GBServer.globals.appPackages);
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});
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GBLog.info(`GeneralBots(${instance.engineName}) listening on: ${url}.`);
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// Serves individual URL for each bot user interface.
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if (process.env.DISABLE_WEB !== 'true') {
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const uiUrl = `/${instance.botId}`;
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GBServer.globals.server.use(uiUrl, express.static(urlJoin(GBDeployer.deployFolder, GBMinService.uiPackage, 'build')));
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GBLog.info(`Bot UI ${GBMinService.uiPackage} accessible at: ${uiUrl}.`);
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}
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// Clients get redirected here in order to create an OAuth authorize url and redirect them to AAD.
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// There they will authenticate and give their consent to allow this app access to
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// some resource they own.
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this.handleOAuthRequests(GBServer.globals.server, min);
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// After consent is granted AAD redirects here. The ADAL library
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// is invoked via the AuthenticationContext and retrieves an
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// access token that can be used to access the user owned resource.
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this.handleOAuthTokenRequests(GBServer.globals.server, min, instance);
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}
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private handleOAuthTokenRequests(server: any, min: GBMinInstance, instance: IGBInstance) {
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server.get(`/${min.instance.botId}/token`, async (req, res) => {
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const state = await min.adminService.getValue(instance.instanceId, 'AntiCSRFAttackState');
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if (req.query.state !== state) {
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const msg = 'WARNING: state field was not provided as anti-CSRF token';
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GBLog.error(msg);
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throw new Error(msg);
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}
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const authenticationContext = new AuthenticationContext(
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urlJoin(min.instance.authenticatorAuthorityHostUrl, min.instance.authenticatorTenant)
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);
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const resource = 'https://graph.microsoft.com';
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authenticationContext.acquireTokenWithAuthorizationCode(
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req.query.code,
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urlJoin(instance.botEndpoint, min.instance.botId, '/token'),
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resource,
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instance.authenticatorClientId,
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instance.authenticatorClientSecret,
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async (err, token) => {
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if (err) {
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const msg = `Error acquiring token: ${err}`;
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GBLog.error(msg);
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res.send(msg);
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} else {
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this.adminService.setValue(instance.instanceId, 'refreshToken', token.refreshToken);
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this.adminService.setValue(instance.instanceId, 'accessToken', token.accessToken);
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this.adminService.setValue(instance.instanceId, 'expiresOn', token.expiresOn.toString());
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this.adminService.setValue(instance.instanceId, 'AntiCSRFAttackState', undefined);
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res.redirect(min.instance.botEndpoint);
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}
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}
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);
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});
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}
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private handleOAuthRequests(server: any, min: GBMinInstance) {
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server.get(`/${min.instance.botId}/auth`, (req, res) => {
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let authorizationUrl = urlJoin(
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min.instance.authenticatorAuthorityHostUrl,
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min.instance.authenticatorTenant,
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'/oauth2/authorize'
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);
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authorizationUrl = `${authorizationUrl}?response_type=code&client_id=${
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min.instance.authenticatorClientId
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}&redirect_uri=${urlJoin(min.instance.botEndpoint, min.instance.botId, 'token')}`;
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res.redirect(authorizationUrl);
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});
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}
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/**
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* Returns the instance object to clients requesting bot info.
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*/
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private async handleGetInstanceForClient(req: any, res: any) {
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let botId = req.params.botId;
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if (botId === '[default]' || botId === undefined) {
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botId = GBConfigService.get('BOT_ID');
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}
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const instance = await this.core.loadInstance(botId);
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if (instance !== null) {
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const webchatTokenContainer = await this.getWebchatToken(instance);
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const speechToken = instance.speechKey != null ? await this.getSTSToken(instance) : null;
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let theme = instance.theme;
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if (theme === undefined) {
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theme = 'default.gbtheme';
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}
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res.send(
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JSON.stringify({
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instanceId: instance.instanceId,
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botId: botId,
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theme: theme,
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webchatToken: webchatTokenContainer.token,
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speechToken: speechToken,
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conversationId: webchatTokenContainer.conversationId,
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authenticatorTenant: instance.authenticatorTenant,
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authenticatorClientId: instance.authenticatorClientId
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})
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);
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} else {
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const error = `Instance not found: ${botId}.`;
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res.sendStatus(error);
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GBLog.error(error);
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}
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}
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/**
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* Get Webchat key from Bot Service.
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*
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* @param instance The Bot instance.
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*
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*/
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private async getWebchatToken(instance: any) {
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const options = {
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url: 'https://directline.botframework.com/v3/directline/tokens/generate',
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method: 'POST',
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headers: {
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Authorization: `Bearer ${instance.webchatKey}`
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}
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};
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try {
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const json = await request(options);
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return Promise.resolve(JSON.parse(json));
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} catch (error) {
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const msg = `[botId:${
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instance.botId
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}] Error calling Direct Line client, verify Bot endpoint on the cloud. Error is: ${error}.`;
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return Promise.reject(new Error(msg));
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}
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}
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/**
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* Gets a Speech to Text / Text to Speech token from the provider.
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*
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* @param instance The general bot instance.
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*
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*/
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private async getSTSToken(instance: any) {
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const options = {
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url: instance.speechEndpoint,
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method: 'POST',
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headers: {
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'Ocp-Apim-Subscription-Key': instance.speechKey
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}
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};
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try {
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return await request(options);
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} catch (error) {
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const msg = `Error calling Speech to Text client. Error is: ${error}.`;
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return Promise.reject(new Error(msg));
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}
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}
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private async buildBotAdapter(instance: any, sysPackages: IGBPackage[]) {
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const adapter = new BotFrameworkAdapter({
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appId: instance.marketplaceId,
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appPassword: instance.marketplacePassword
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});
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const storage = new MemoryStorage();
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const conversationState = new ConversationState(storage);
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const userState = new UserState(storage);
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adapter.use(new AutoSaveStateMiddleware(conversationState, userState));
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MicrosoftAppCredentials.trustServiceUrl('https://directline.botframework.com',
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new Date(new Date().setFullYear(new Date().getFullYear() + 10)));
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// The minimal bot is built here.
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const min = new GBMinInstance();
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min.botId = instance.botId;
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min.bot = adapter;
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min.userState = userState;
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min.core = this.core;
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min.conversationalService = this.conversationalService;
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min.adminService = this.adminService;
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min.deployService = this.deployer;
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min.kbService = new KBService(this.core.sequelize);
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min.instance = await this.core.loadInstance(min.botId);
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min.cbMap = {};
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min.scriptMap = {};
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min.sandBoxMap = {};
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min.packages = sysPackages;
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if (min.instance.whatsappServiceKey !== null) {
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min.whatsAppDirectLine = new WhatsappDirectLine(
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min,
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min.botId,
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min.instance.whatsappBotKey,
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min.instance.whatsappServiceKey,
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min.instance.whatsappServiceNumber,
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min.instance.whatsappServiceUrl
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);
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}
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min.userProfile = conversationState.createProperty('userProfile');
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const dialogState = conversationState.createProperty('dialogState');
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min.dialogs = new DialogSet(dialogState);
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min.dialogs.add(new TextPrompt('textPrompt'));
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min.dialogs.add(new ConfirmPrompt('confirmPrompt'));
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return { min, adapter, conversationState };
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}
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private async invokeLoadBot(appPackages: IGBPackage[], sysPackages: IGBPackage[], min: GBMinInstance) {
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await CollectionUtil.asyncForEach(sysPackages, async e => {
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await e.loadBot(min);
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});
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await CollectionUtil.asyncForEach(appPackages, async p => {
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p.sysPackages = sysPackages;
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await p.loadBot(min);
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if (p.getDialogs !== undefined) {
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const dialogs = await p.getDialogs(min);
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dialogs.forEach(dialog => {
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min.dialogs.add(new WaterfallDialog(dialog.id, dialog.waterfall));
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});
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}
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});
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}
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/**
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* Bot Service hook method.
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*/
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private async receiver(
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adapter: BotFrameworkAdapter,
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req: any,
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res: any,
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conversationState: ConversationState,
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min: GBMinInstance,
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instance: any,
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appPackages: any[]
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) {
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await adapter.processActivity(req, res, async context => {
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// Get loaded user state
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const step = await min.dialogs.createContext(context);
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step.context.activity.locale = 'pt-BR';
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try {
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const user = await min.userProfile.get(context, {});
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// First time processing.
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if (!user.loaded) {
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await min.conversationalService.sendEvent(step, 'loadInstance', {
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instanceId: instance.instanceId,
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botId: instance.botId,
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theme: instance.theme ? instance.theme : 'default.gbtheme',
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secret: instance.webchatKey
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});
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user.loaded = true;
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user.subjects = [];
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user.cb = undefined;
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if (context.activity.membersAdded !== undefined) {
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let sec = new SecService();
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const member = context.activity.membersAdded[0];
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const persistedUser = await sec.ensureUser(instance.instanceId, member.id,
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min.botId, member.id, "", "web", member.name, member.id);
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const analytics = new AnalyticsService();
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user.systemUser = persistedUser;
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user.conversation = await analytics.createConversation(persistedUser);
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}
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await min.userProfile.set(step.context, user);
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}
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GBLog.info(
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|
`User>: ${context.activity.text} (${context.activity.type}, ${context.activity.name}, ${
|
|
context.activity.channelId
|
|
}, {context.activity.value})`
|
|
);
|
|
if (context.activity.type === 'conversationUpdate' && context.activity.membersAdded.length > 0) {
|
|
const member = context.activity.membersAdded[0];
|
|
if (member.name === min.instance.title) {
|
|
GBLog.info(`Bot added to conversation, starting chat...`);
|
|
await CollectionUtil.asyncForEach(appPackages, async e => {
|
|
await e.onNewSession(min, step);
|
|
});
|
|
await step.beginDialog('/');
|
|
} else {
|
|
GBLog.info(`Member added to conversation: ${member.name}`);
|
|
}
|
|
|
|
// Processes messages.
|
|
} else if (context.activity.type === 'message') {
|
|
// Checks for /admin request.
|
|
await this.processMessageActivity(context, min, step);
|
|
|
|
// Processes events.
|
|
} else if (context.activity.type === 'event') {
|
|
// Empties dialog stack before going to the target.
|
|
|
|
await this.processEventActivity(context, step);
|
|
}
|
|
await conversationState.saveChanges(context, true);
|
|
} catch (error) {
|
|
const msg = `ERROR: ${error.message} ${error.stack ? error.stack : ''}`;
|
|
GBLog.error(msg);
|
|
|
|
await step.context.sendActivity(Messages[step.context.activity.locale].very_sorry_about_error);
|
|
await step.beginDialog('/ask', { isReturning: true });
|
|
}
|
|
});
|
|
}
|
|
|
|
private async processEventActivity(context, step: GBDialogStep) {
|
|
if (context.activity.name === 'whoAmI') {
|
|
await step.beginDialog('/whoAmI');
|
|
} else if (context.activity.name === 'showSubjects') {
|
|
await step.beginDialog('/menu', undefined);
|
|
} else if (context.activity.name === 'giveFeedback') {
|
|
await step.beginDialog('/feedback', {
|
|
fromMenu: true
|
|
});
|
|
} else if (context.activity.name === 'showFAQ') {
|
|
await step.beginDialog('/faq');
|
|
} else if (context.activity.name === 'answerEvent') {
|
|
await step.beginDialog('/answerEvent', <AskDialogArgs>{
|
|
questionId: context.activity.data,
|
|
fromFaq: true
|
|
});
|
|
} else if (context.activity.name === 'quality') {
|
|
await step.beginDialog('/quality', {
|
|
score: context.activity.data
|
|
});
|
|
} else if (context.activity.name === 'updateToken') {
|
|
const token = context.activity.data;
|
|
await step.beginDialog('/adminUpdateToken', { token: token });
|
|
} else {
|
|
await step.continueDialog();
|
|
}
|
|
}
|
|
|
|
private async processMessageActivity(context, min: GBMinInstance, step: GBDialogStep) {
|
|
|
|
if (process.env.PRIVACY_STORE_MESSAGES === "true") {
|
|
|
|
// Adds message to the analytics layer.
|
|
|
|
const analytics = new AnalyticsService();
|
|
const user = await min.userProfile.get(context, {});
|
|
analytics.createMessage(min.instance.instanceId,
|
|
user.conversation, user.systemUser,
|
|
context.activity.text);
|
|
}
|
|
|
|
// Checks for global exit kewywords cancelling any active dialogs.
|
|
|
|
const globalQuit = (locale, utterance) => {
|
|
return utterance.match(Messages[locale].global_quit);
|
|
}
|
|
|
|
const isVMCall = Object.keys(min.scriptMap).find(key => min.scriptMap[key] === context.activity.text) !== undefined;
|
|
|
|
const simpleLocale = context.activity.locale.substring(0, 2);
|
|
const hasBadWord = wash.check(simpleLocale, context.activity.text);
|
|
|
|
if (hasBadWord) {
|
|
await step.beginDialog('/pleaseNoBadWords');
|
|
} else if (isVMCall) {
|
|
await GBMinService.callVM(context.activity.text, min, step);
|
|
} else if (context.activity.text.charAt(0) === '/') {
|
|
let text = context.activity.text;
|
|
let parts = text.split(' ');
|
|
let dialogName = parts[0];
|
|
parts.splice(0, 1);
|
|
let args = parts.join(' ');
|
|
await step.beginDialog(dialogName, { args: args });
|
|
|
|
} else if (globalQuit(step.context.activity.locale, context.activity.text)) {
|
|
await step.cancelAllDialogs();
|
|
await step.context.sendActivity(Messages[step.context.activity.locale].canceled);
|
|
} else if (context.activity.text === 'admin') {
|
|
await step.beginDialog('/admin');
|
|
|
|
// Checks for /menu JSON signature.
|
|
} else if (context.activity.text.startsWith('{"title"')) {
|
|
await step.beginDialog('/menu', JSON.parse(context.activity.text));
|
|
// Otherwise, continue to the active dialog in the stack.
|
|
} else {
|
|
if (step.activeDialog !== undefined) {
|
|
await step.continueDialog();
|
|
} else {
|
|
await step.beginDialog('/answer', {
|
|
query: context.activity.text
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
public static async callVM(text: string, min: GBMinInstance, step: GBDialogStep) {
|
|
const mainMethod = text;
|
|
min.sandBoxMap[mainMethod][mainMethod].bind(min.sandBoxMap[mainMethod]);
|
|
return await min.sandBoxMap[mainMethod][mainMethod](step);
|
|
}
|
|
}
|