Destructuring assignment object from a middleware response - node.js

Question

I created a middleware as below:
const oAuth = (req, res, next) => {
axios.post(tokenEndpoint, "", { params: {
grant_type: process.env.GRANT_TYPE,
client_id: process.env.CLIENT_ID,
client_secret: process.env.CLIENT_SECRET,
code: process.env.AUTHORIZATION_CODE,
}}).then(response => {
req.oAuth = response.data;
//console.log(response.data);
console.log(req.oAuth);
}).catch(err => {
console.error(err);
})
next();
}
module.exports = oAuth;
the response/result of the oauth function is something like:
{
access_token: '1000.ddf6d96b4f3sadasdasdas55a2450ae13',
refresh_token: '100dasdsadasdsadhgdhgfhdghdfghe427288',
api_domain: 'https://www.oapis.com',
token_type: 'Bearer',
expires_in: 3600
}
now in the "index.js" file I'm trying to destructure the oAuth function response object to access the attribute access_token and put it in the URL to make a post request, but I'm not succeeding. what am I doing wrong?
const express = require("express");
const axios = require("axios");
const oAuth = require("./oAuth.js");
const app = express();
app.use(oAuth);
var port = process.env.PORT || 3001;
const someAPI = "https://www.oapis.com/crm/v2/Leads";
app.get("/", async (req, res) => {
try {
const {access_token} = req.oAuth
const response = await axios({
method: "GET",
url: someAPI,
//timeout: 1000,
headers: { Authorization: `Zoho-oauthtoken ${access_token}` },
});
return res.json(response.data);
} catch (error) {
console.log(error);
if (error.response.status === 401) {
res.status(401).json("Unauthorized to access data");
} else if (error.response.status === 403) {
res.status(403).json("Permission denied");
} else {
res.status(500).json("Whoops. Something went wrong");
}
};
});

Answer 1

I would suggest using async/await here to wait for oauth response and only then modify request object in order to pass it further to the next() callback.
const oAuth = async (req, res, next) => {
try {
const response = axios.post(tokenEndpoint, "", { params: {
grant_type: process.env.GRANT_TYPE,
client_id: process.env.CLIENT_ID,
client_secret: process.env.CLIENT_SECRET,
code: process.env.AUTHORIZATION_CODE,
}});
console.log(response.data);
req.oAuth = response.data;
} catch (e) {
console.log(e);
}
next();
}
module.exports = oAuth;