bot.ts

const { Botkit } = require('botkit');
const { SlackAdapter, SlackMessageTypeMiddleware, SlackEventMiddleware } = require('botbuilder-adapter-slack');

require('dotenv').config();

const adapter = new SlackAdapter({
    verificationToken: process.env.VERIFICATION_TOKEN,
    clientSigningSecret: process.env.CLIENT_SIGNING_SECRET,  
    botToken: process.env.BOT_TOKEN,
    clientId: process.env.CLIENT_ID,
    clientSecret: process.env.CLIENT_SECRET,
    scopes: [
        'bot',
        'usergroups:read',
        'usergroups:write',
        'users:read',
        'users:read.email',
        'channels:read',
        'channels:write',
        'groups:read',
        'groups:write'
    ]
});

adapter.use(new SlackEventMiddleware());
adapter.use(new SlackMessageTypeMiddleware());


const controller = new Botkit({
    webhook_uri: '/api/messages',

    adapter: adapter
});

controller.webserver.get('/install', (req, res) => {
    res.redirect(controller.adapter.getInstallLink());
});

controller.webserver.get('/install/auth', async (req, res) => {
    try {
        const results = await controller.adapter.validateOauthCode(req.query.code);

        console.log(results);

        res.json('Success! Bot installed.');
    } catch (err) {
        console.error('OAUTH ERROR:', err);
        res.status(401);
        res.send(err.message);
    }
});