gateway_service.rb

class GatewayService
  def self.register(cc_token, customer = {})
    account = Gateway::Account.create(name: user[:name].to_s, email: user[:email].to_s, credit_card: cc_token.to_s)
    account.id
  end

  def self.pay(amount, customer = {})
    account = Gateway::Account.get(customer[:external_id].to_s)
    account.charge(amount.to_i)
  end
end