how do we convert curl to provider

[redimongo]

I thought I would spin up a oAuth server quickly and see if I can integrate it into next-auth.

Currently if I want to request token or authenticate a person I would do this.

curl http://localhost:3100/oauth/token \
	-d "grant_type=password" \
	-d "username=pedroetb" \
	-d "password=password" \
	-H "Authorization: Basic YXBwbGljYXRpb246c2VjcmV0" \
	-H "Content-Type: application/x-www-form-urlencoded"

Is there away to make this a custom provider? clearly I still need the user to type in a username and password for this to work, however it would allow me to utilise the database feature in Next-Auth.