open-ai-slack-bolt-integration-sample

app.js

/**
* Slack App Setting
* Enable Socket Mode
* Enable Event Subscriptions
* OAuth & Permissions: app_mentions:read, chat:write
* @slack/bolt requires at least NodeJs version 12.13.0
*/
const { App } = require('@slack/bolt');
const request = require('request');
const OPENAI_API_KEY = process.env.OPENAI_API_KEY;
const app = new App({
  token: process.env.SLACK_BOT_TOKEN,
  signingSecret: process.env.SLACK_SIGNING_SECRET,
  socketMode: true,
  appToken: process.env.SLACK_APP_TOKEN,
  // Socket Mode doesn't listen on a port, but in case you want your app to respond to OAuth,
  // you still need to listen on some port!
  port: process.env.PORT || 3000
});

function callOpenAi(message){
  return new Promise((resolve, reject) => {
    request.post({
      url: 'https://api.openai.com/v1/completions',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${OPENAI_API_KEY}`
      },
      json: {
        model: 'text-davinci-003',
        prompt: message,
        temperature: 0.7,
        max_tokens: 1000,
        top_p: 1,
        frequency_penalty: 0,
        presence_penalty: 0
      }
    }, (error, response, body) => {
      if (error) {
        reject(error);
      } else {
        const answer = body.choices[0].text;
        resolve(answer);
      }
    });
  });
}

app.event('app_mention', async ({ event, context, client, say }) => {
  try {
    let answer = await callOpenAi(event.text);
    await say({"blocks": [
      {
        "type": "section",
        "text": {
          "type": "mrkdwn",
          "text": `<@${event.user}> ${answer}`
        }
      }
    ]});
  }
  catch (error) {
    console.error(error);
  }
});

(async () => {
  // Start your app
  await app.start();

  console.log('⚡️ Bolt app is running!');
})();

package.json

{
  "name": "open-ai-slack-bolt-integration-sample",
  "version": "1.0.0",
  "description": "",
  "main": "app.js",
  "scripts": {
    "start": "node app.js"
  },
  "author": "Kevin Zhuang",
  "license": "ISC",
  "dependencies": {
    "@slack/bolt": "^3.12.2",
    "openai": "^3.1.0",
    "request": "^2.88.2"
  }
}