api.rb

require 'faraday'
require 'json'

module Incognia
  class Api
    include Singleton

    API_HOST = 'https://api.us.incognia.com/api/'.freeze

    def register_login(installation_id:, account_id:)
      transactions_endpoint = 'v2/authentication/transactions'
      params = {
        installation_id: installation_id,
        account_id: account_id,
        type: 'login'
      }

      response = Faraday.post(
        "#{API_HOST}#{transactions_endpoint}",
        params.to_json,
        headers
      )

      if response.status == 200
        parsed_body = JSON.parse(response.body)
        parsed_body['risk_assessment']
      else
        # Error handling
      end
    end

    private

    def headers
      {
        'Content-Type': 'application/json',
        # Read more about how to generate a fresh token at our
        # Authenticating in Incognia APIs section.
        Authorization: "Bearer #{fresh_token}"
      }
    end
  end
end