Oauth2 token not working for gmail_xoauth gem

Question

I'm currently getting a token via the omniauth-google-oauth2 gem per the following: https://github.com/zquestz/omniauth-google-oauth2

I store the token that comes back from the auth_hash.

I then try to use the token by calling:

require 'gmail_xoauth'
imap = Net::IMAP.new('imap.gmail.com', 993, usessl = true, certs = nil, verify = false)
imap.authenticate('XOAUTH2', 'myemail@gmail.com', Token.last)

Problem is that I get an error:

[8] pry(main)> imap.authenticate('XOAUTH2', 'myemail@gmail.com', Token.last)
  Token Load (0.6ms)  SELECT  "tokens".* FROM "tokens"  ORDER BY "tokens"."id" DESC LIMIT 1
Net::IMAP::NoResponseError:  Invalid credentials (Failure)
from /Users/username/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/imap.rb:1171:in `get_tagged_response'

Answer 1

Ok I took a look at google-api-client and I started to use that a little more. Seems like the best solution at the moment is to do the following:

1. create an options hash that includes the gmail parameters and the gmail api_method
2. use the service you initialize with your access_token to create your query in the options hash

Below you can see a rough example that you can use

client = Google::APIClient.new
client.authorization.access_token = token
service = client.discovered_api 'gmail'
options = {parameters: {'userId' => 'email@gmail.com'}, api_method: service.users.messages.list}
client.execute(options)

I mean this is pretty clunky and should be DRY'd up. (Hopefully google creates a better gem around this)