Converting cURL command to JavaScript - node.js

Question

I'm trying to call an Instagram API call from my server (nodeJS) and I am not sure how to do so.
curl -X POST https://api.instagram.com/oauth/access_token \
-F client_id=123456... \
-F client_secret=123abc... \
-F grant_type=authorization_code \
-F redirect_uri=https://google.sg/ \
-F code=123abc
This command returns the desired output when I run it on the command line, but I can't seem to find a way to do the same in JavaScript. Here is what I've tried:
axios
.post("https://api.instagram.com/oauth/access_token", {
client_id: 123456...,
client_secret: "123abc...",
grant_type: "authorization_code",
redirect_uri: "https://google.sg",
code:
"123abc...",
})
This is what is logged in by the catch block:
data: {
error_type: 'OAuthException',
code: 400,
error_message: 'Missing required field client_id'
}
I think -F refers to form data, but I can't seem to find a way to do that in axios.
edit: I've tried it with just client_id, and it returns the same error.
edit 2: I don't think this is a fix but Postman Agent has a nifty function to translate the HTTP request into code:
It can be accessed via Code on the right.

Answer 1

Just see that in your CURL request you have the redirect_uri: https://google.sg/
And in your axios params you have: https://google.sg
You are missing a / in the axios parameter.
The way Oauth2 works is that it appends parameters to the redirect_uri specified in your api settings, so if you set it to https://google.sg/, it is expected that it is indeed the same url, without any changes.
The response you should be getting would be:
https://google.sg/access_token=#xxxx
As you had specified, the response would be different, like so:
https://google.sg?access_token=#xxxx
That is not only a non-valid URL, but it also doesn't match the one you specified.
For this reason it is recommended that you set a standard path, for example:
https://google.sg/oauth
So in the end you would get:
https://google.sg/oauth?access_token=#xxxx