The document details the process of writing a Slack chatbot, including an overview of chatbots, installation instructions for Botkit, and example code snippets. It covers integration with external APIs and natural language processing to enhance the chatbot's interactions. Key features include responding to user messages and understanding human intent through NLP capabilities.

1. Writing a Slack
ChatBot
by Jesus Manuel Olivas / weKnow

2. ● WHO AM I?
Jesus Manuel Olivas
jmolivas@weknowinc.com
jmolivas
jmolivas
drupal.org/u/jmolivas
jmolivas.weknowinc.com

3. WeGive
2,572,697

4. WeAre

5. WeKnow

6. What is this session about.
> What is a ChatBot?
> How to write a chatbot
> Enable support for Slack
> Integrate with an external API
> Integrate with Natural Language Processing service platform

7. What is a ChatBot?

8. What is a ChatBot
A computer program designed to
mimic conversations with people
via audio or text.

9. But why a ChatBot?

10. Some of the things we do in our
every day lives, especially at our
jobs, can be automated.

11. Whenever a human is involved in a
repetitive task … there is a chance
for an error.

12. Let the Robots do the work.

13. Do You Want to Build a
ChatBot?

14. Installation
# Installing Botkit
npm install -g botkit
# Creating new project
botkit new —platform slack

15. Start the application
# Start Server
node bot.js
# Start server
clientId=CLIENT_ID clientSecret=CLIENT_SECRET PORT=3000
node bot.js

16. Start the application
# Create .env file
clientId=CLIENT_ID
clientSecret=CLIENT_SECRET
PORT=3000
# Exposer port using ngrok
ngrok http 3000

17. Minimum configuration
var Botkit = require('botkit');
var request = require('request');
var bot_options = {
clientId: process.env.clientId,
clientSecret: process.env.clientSecret,
scopes: ['bot']
};

18. Hear for messages
// Create the Botkit controller, which controls instances of the bot.
var controller = Botkit.slackbot(bot_options);
controller.hears(['Hi'], 'ambient', function(bot, message) {
bot.reply(message, 'Hi ... I heard a message.’)
});

19. Hear for messages
// Create the Botkit controller, which controls instances of the bot.
var controller = Botkit.slackbot(bot_options);
controller.hears(['hola', 'que tal'], 'ambient', function(bot, message) {
bot.reply(message, 'Hola que tal.')
});

20. Return an attachment
bot.reply(message, {
attachments:[
{
"title": “Lorem ipsum.",
"image_url": "https://imgs.xkcd.com/comics/twitter_bot_2x.png",
"color": "#ff0000"
}
]
});

21. Integrate API … REST/GraphQL

22. API calls
controller.hears(['show crypto prices'], incomingEvent, function(bot, message) {
bot.reply(message, 'fetching information ...');
request({ method: ‘get', uri: 'https://api.bitso.com/v3/ticker', json: true }, function (err, response, json) {
let colors = [ 'good', 'warning', 'danger'];
for(var i = 0; i < json.payload.length; i++) {
bot.reply(message, {
attachments: [{
"title": json.payload[i].book,
"text": JSON.stringify(json.payload[i], undefined, 2),
"color": colors[Math.floor(Math.random()*colors.length)]
}]
});
}
});
});

23. Natural Language Processing

24. A key feature for a bot is its ability to
understand the intentions of humans and
the extraction of relevant information from
that intention

25. Natural language processing (NLP) can be
defined as the ability of a machine to
analyze, understand, and generate human
speech.

26. The goal of NLP is to make interactions
between computers and humans feel
exactly like interactions between humans
and humans.

30. Easily create text or voice based bots that humans
can chat with on their preferred messaging platform.
https://wit.ai/
Wit.AI

31. botkit-witai
# Require dependency
npm install --save botkit-witai
# Start server
clientId=CLIENT_ID clientSecret=CLIENT_SECRET PORT=3000
wit_ai_token=WIT_AI_TOKEN node bot.js

32. botkit-witai
# Usage
var wit = require('botkit-witai')({
accessToken: process.env.wit_ai_token,
minConfidence: 0.6
});
# Register middleware
controller.middleware.receive.use(wit.receive);

33. botkit-witai
controller.hears(['.*'], incomingEvent, function (bot, message)
{
var intent = message.entities.intent[0].value;
var intent_type = intent + '_type';
var type = message.entities[intent_type][0].value;
bot.reply(message, 'intent: ' + intent + ', type: ' + type);
});

34. Thank you … Questions?