How to build a Twitter Bot with Heroku and Twit

You can see the progress here Twitter Bot Github.
Start by creating an App in Twitter Application Manager. Once created get the following in you app’s dashboard:
  • Consumer Key

  • Consumer Secret

  • Access Token

  • Access Token Secret

Then create a Free Heroku Account here.

Lets Start


Now create to files called bot.js and package.json in a folder.

Packages Required


We will require the Twit package and Node but copy the following and change the details for your app.
{
"name": "robATwitter",
"version": "1.0.0",
"description": "A twitter bot for my site Rob Askam",
"main": "bot.js",
"scripts": {
"start": "node bot.js"
},
"keywords": [
"bot",
"twitter",
"robaskam"
],
"author": "Robert Askam",
"license": "ISC",
"dependencies": {
"rss-tweet-bot": "^0.1.1",
"twit": "^2.2.5",
"path": "^0.12.7",
"express": "^4.14.0"
},
"engines": {
"node": "7.9.0"
}
}

Bot File

Firstly to hide your keys process.env.[key name] and i will show you how to use them on Heroku.
Change the
const stream = TH.stream
track, these are what will be looked for and if found access the function.
const express = require('./node_modules/express');
const app = express();
const path = require('./node_modules/path');
app.set('port', (process.env.PORT || 5000));
app.get('/', function (request, response) {
response.sendFile(path.join(__dirname + '/index.html'));
}).listen(app.get('port'), function () {
console.log('App is running, server is listening on port ', app.get('port'));
});


const Twit = require('./node_modules/twit');
const TH = new Twit({ // Twit Handler
consumer_key : process.env.consumer_key,
consumer_secret : process.env.consumer_secret,
access_token : process.env.access_token,
access_token_secret : process.env.access_token_secret
});

const stream = TH.stream('statuses/filter', {
track: ['robert-askam', 'robert-askam.co.uk','www.robert-askam.co.uk']
});

stream.on('tweet', (tweet) => {

//This will like the tweet if contains the above keywords
TH.post('favorites/create',{
id:tweet.id_str
},function (err,response) {
console.log(err);
console.log(response);
});
//This will retweet the tweet if it contains the above keywords
TH.post('statuses/retweet/:id', {
id: tweet.id_str
});

//This will add a rely to the selected tweet.
TH.post('statuses/update', {
status: `@${tweet.user.screen_name} Thanks for sharing :)`,
in_reply_to_status_id: tweet.id_str
});
return;
});

Heroku

Add a name for the App in your personal apps.
In the Deployment method select GitHub and link it to your account and App name.