I am trying to automated the google gmail api, which I can read and get messages. However the oauth token expires and I can only seem to authenticate with ‘browser’ I have tried to post the the details to the endpoints but it wont work. How can I automate this progress so google can get the refresh token?
I am posting my details to - https://accounts.google.com/o/oauth2/token
but i am getting this in the response body -
"error": "invalid_request", "error_description": "Missing required parameter: code"
any help would be amazing.