botanalytics-ghome/examples/viber-example.js

Conversational analytics & engagement tool for chatbots

'use strict';

const util = require('util');
const ViberBot = require('viber-bot').Bot;
const BotEvents = require('viber-bot').Events;
const TextMessage = require('viber-bot').Message.Text;
const Botanalytics = require('botanalytics').Viber(process.env.BOTANALYTICS_TOKEN, {
    debug: true
});

const winston = require('winston');
const toYAML = require('winston-console-formatter');

var request = require('request');

function createLogger() {
    const logger = new winston.Logger({
        level: "debug" // We recommend using the debug level for development
    });

    logger.add(winston.transports.Console, toYAML.config());
    return logger;
}

function say(response, message) {
    response.send(new TextMessage(message));
}

function checkUrlAvailability(botResponse, urlToCheck) {

    if (urlToCheck === '') {
        say(botResponse, 'I need a URL to check');
        return;
    }

    say(botResponse, 'One second...Let me check!');

    var url = urlToCheck.replace(/^http:\/\//, '');
    request('http://isup.me/' + url, function(error, requestResponse, body) {
        if (error || requestResponse.statusCode !== 200) {
            say(botResponse, 'Something is wrong with isup.me.');
            return;
        }

        if (!error && requestResponse.statusCode === 200) {
            if (body.search('is up') !== -1) {
                say(botResponse, 'Hooray! ' + urlToCheck + '. looks good to me.');
            } else if (body.search('Huh') !== -1) {
                say(botResponse, 'Hmmmmm ' + urlToCheck + '. does not look like a website to me. Typo? please follow the format `test.com`');
            } else if (body.search('down from here') !== -1) {
                say(botResponse, 'Oh no! ' + urlToCheck + '. is broken.');
            } else {
                say(botResponse, 'Snap...Something is wrong with isup.me.');
            }
        }
    })
}

const logger = createLogger();

if (!process.env.VIBER_PUBLIC_ACCOUNT_ACCESS_TOKEN_KEY) {
    logger.debug('Could not find the Viber Public Account access token key in your environment variable. Please make sure you followed readme guide.');
    return;
}

// Creating the bot with access token, name and avatar
const bot = new ViberBot(logger, {
    authToken: process.env.VIBER_PUBLIC_ACCOUNT_ACCESS_TOKEN_KEY, // Learn how to get your access token at developers.viber.com
    name: "Is It Up",
    avatar: "https://raw.githubusercontent.com/devrelv/drop/master/151-icon.png" // Just a placeholder avatar to display the user
});

Botanalytics.attach(bot, (err) => {

    console.log('Callback error: ' + util.inspect(err));
});

// The user will get those messages on first registration
bot.on(BotEvents.SUBSCRIBED, (message, response) => {

    say(response, `Hi there ${response.userProfile.name}. I am ${bot.name}! Feel free to ask me if a web site is down for everyone or just you. Just send me a name of a website and I'll do the rest!`);
});

bot.on(BotEvents.SUBSCRIBED, (message, response) => {

    // This sample bot can answer only text messages, let's make sure the user is aware of that.
    if (!(message instanceof TextMessage)) {
        say(response, `Sorry. I can only understand text messages.`);
    }
});

bot.onTextMessage(/./, (message, response) => {
    checkUrlAvailability(response, message.text);
});

const http = require('http');
const port = process.env.PORT || 8080;

http.createServer(bot.middleware()).listen(port, () => bot.setWebhook('https://yourwebhookurl.com'));