A friendly Slack Bot that responds and reacts to everyone with emojis 🗣

emoji-bot.js

const rp = require('request-promise')
const Botkit = require('botkit');
const emojiDict = require("emoji-dictionary");
const shuffle = require('shuffle-array')

const getRandomInt = (min, max) => {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

const controller = Botkit.slackbot();

controller.spawn({
  token: process.env.SLACK_BOT_TOKEN,
}).startRTM()

// Direct messaging and mentions
controller.hears('.*',['direct_message','direct_mention','mention'], (bot,message) => {
  let text = message.text

  text = text.replace(/[^\w\s]/gi, '')

  rp(`https://emoji.getdango.com/api/emoji?q=${text}`).then(response => {
    const emojiList = JSON.parse(response).results

    const picks = shuffle([emojiList[0], emojiList[1]])

    const replyMessage = picks.map(emoji => emoji.text).join('');

    bot.replyWithTyping(message, replyMessage);
  })
});

// Reactions in channels
controller.on('ambient', (bot, message) => {
  let text = message.text

  text = text.replace(/[^\w\s]/gi, '')

  rp(`https://emoji.getdango.com/api/emoji?q=${text}`).then(response => {
    const results = JSON.parse(response).results

    if (results[0].score > 0.03) {
      const = emojiName1 = emojiDict.getName(results[0].text)
      bot.api.reactions.add({
        timestamp: message.ts,
        channel: message.channel,
        name: emojiName1,
      });
    }
    
    if (results[0].score - results[1].score < 0.03 && results[1].score > 0.01) {
      const emojiName2 = emojiDict.getName(results[1].text)
      
      bot.api.reactions.add({
        timestamp: message.ts,
        channel: message.channel,
        name: emojiName2,
      });
    }
  })
});

Plug in your SLACK_BOT_TOKEN, run node emoji-bot.js.
After inviting the bot to a channel, with the power of AI, it will respond to @mentions and add reactions to messages.

You can also talk to it privately if that's your thing!

Hey @danielravina ! This is great! A long time has passed since this but do you know if it's possible for the bot to comment on a message based on a specific reaction emoji?

Nevermind, I think this reaction.get method API is perfect :D