API structure done

src/index.js

@@ -0,0 +1,35 @@
+const Express = require('express')
+const app = Express()
+const port = (process.env.PORT || 3030)
+require('dotenv').config()
+
+//Configure Handlebars
+const hbs = require('hbs')
+hbs.registerPartials(__dirname + '/../views/partials')
+app.set('view engine', 'hbs')
+
+//Use public folder
+app.use(Express.static('public'));
+
+//Create master route
+const masterRoute = Express.Router()
+
+app.use('/api/v1', masterRoute)
+
+//Import routes
+const auth = require('./routes/authRouter.js')
+masterRoute.use('/auth', auth)
+
+masterRoute.get('/', (req, res) => {
+    res.send('Welcome to the Telegram to Notion Bot Backend!')
+})
+
+masterRoute.get('/privacy-policy', (req, res) => {
+    res.render('privacy-policy')
+})
+
+masterRoute.get('/terms-of-use', (req, res)  => {
+    res.render('terms-of-use')
+})
+
+app.listen(port, () => console.log('port', port))

src/routes/authRouter.js

@@ -0,0 +1,60 @@
+const Express = require('express');
+const router = Express.Router()
+
+const axios = require('axios')
+
+router.get('/', async (req, res) => {
+
+    async function requestAccessToken() {
+        try {
+            const reqData = {
+                code: req.query.code,
+                grant_type: "authorization_code",
+                redirect_uri: "https://telegram-to-notion.herokuapp.com/auth"
+            }
+
+            const auth = {
+                Authorization: "Basic " + Buffer.from(`${process.env.NOTION_INTEGRATION_ID}:${process.env.NOTION_INTEGRATION_SECRET}`).toString('base64')
+            }
+
+            console.log(auth)
+
+            const response = await axios({
+                method: "POST",
+                url: "https://api.notion.com/v1/oauth/token",
+                data: reqData,
+                auth: {
+                    username: Buffer.from(process.env.NOTION_INTEGRATION_ID.toString('base64')),
+                    password: Buffer.from(process.env.NOTION_INTEGRATION_SECRET.toString('base64'))
+                } //THANK YOU https://stackoverflow.com/questions/67534080/notion-api-invalid-client-oauth-integration/68699544#68699544?newreg=949504cf865c4a52b2c0ce7afe936c9b
+            })
+
+            console.log(response.status) //400 in positive case
+            console.log(response.data)
+
+            /**
+             * access_token: string,
+             * token_type: string,
+             * bot_id: string,
+             * workspace_name: string,
+             * workspace_icon: string,
+             * workspace_id: string
+             */
+
+            return response
+        }
+        catch (error) {
+            console.log(error)
+
+            return {status: 400}
+        }
+    }
+
+    const response = await requestAccessToken()
+
+    res.status(response.status).json(
+        response
+    )
+})
+
+module.exports = router