snippet.rb

  # update token data from an OAuth2::AccessToken
  def from_token!(token)
    new_token_data = {
      "token" => token.token,
      "expires_in" => token.expires_in,
      "expires_at" => token.expires_at,
    }

    # add back refresh token
    if token.refresh_token.present?
      new_token_data["refresh_token"] = token.refresh_token
    else
      new_token_data["refresh_token"] = self.token_data["refresh_token"]
    end

    if persisted?
      update_document({
        "$set" => {
          "token_data" => new_token_data,
        }
      }, true)
    else
      self.token_data = new_token_data
    end

    new_token_data
  end