exemplo1solid.rb

class Subscription
  def initialize(user)
    @user = user
  end
  
  def call
    create_payment!
    create_invoice!
  rescue StandardError => e
    puts e.message
  end
  
  private
  
  attr_accessor :user, :payment

  def create_payment!
    @payment = Payment.create!(user: user, amount: 30.00)
  end
  
  def create_invoice!
    Invoice.create!(payment: payment)
  end
end