Newsletter2go ruby API client authorisation with get_token method - ruby-on-rails

Question

Good day!
Can you please give me an example of authentication request with ruby newsletetr2go API client.
I can't figure it out.
I can connect to API using direct requests like RestClient.post "#{link}/oauth/v2/token", credentials, default_header
In credentials I use my username, password and grant_type, converted to json format
In default header I use content_type: 'application/json' and authorization: "Basic #{Base64.strict_encode64(ENV['NEWSLETTER2GO_AUTH_KEY'])}"
And it works fine. But when I try to use newsletter2go get_token method all I receive is "BAD REQUEST" error.
I'm using initializer to configure SwaggerClient like this:
SwaggerClient.configure do |config|
# Configure OAuth2 access token for authorization: OAuth
config.password = ENV['NEWSLETTER2GO_PASSWORD']
config.username = ENV['NEWSLETTER2GO_USERNAME']
config.api_key = ENV['NEWSLETTER2GO_AUTH_KEY']
end
After that I use newsletter2go api method call
SwaggerClient::AuthorizationApi.new.get_token("https://nl2go.com/jwt")
Seems everything is correct, but error "BAD REQUEST" happens all the time.
I followed the instructions, install swagger_client with ruby extentions in github, and newsletter2go methods are now available from my rails environment.
If I grab access_token manually and add it to my initializer, then do some requests like SwaggerClient::ListApi.new.get_lists it gives me a proper response with status 200 and list_ids
But SwaggerClient::AuthorizationApi.new.get_token("https://nl2go.com/jwt") does not work and this is the issue.
Any help would be very appreciated!

Answer 1

I figured out the reason why Newsletter2Go API ruby client does not grab api_key value. For some reason it's hardcoded to setup basic auth token which stands from username and password packed.
Here is code from
module SwaggerClient
class Configuration
# Gets Basic Auth token string
def basic_auth_token
'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
end
# Returns Auth Settings hash for api client.
def auth_settings
{
'OAuth' =>
{
type: 'oauth2',
in: 'header',
key: 'Authorization',
value: "Bearer #{access_token}"
},
'Basic' =>
{
type: 'basic',
in: 'header',
key: 'Authorization',
value: basic_auth_token
},
}
end