Use pack to book class

redeem_class_credit.rb

def redeem_class_credit(customer_user_id, class_id)
  
  # Validate customer
  current_user = User.find(customer_user_id)
  return "Invalide customer user id" if current_user.nil?
  
  # Validate class
  klass = TalentClass.find(class_id);
  return "Invalide class id" if klass.nil?
  
  # Validate credits
  credits = SpacesHelper.redeemable_credits_for(klass, current_user, 'talent_class')
  return "You don't have credits available that apply to redeem this resource." if credits[:available].zero?
  
  ActiveRecord::Base.transaction do
    order = Order.create!(
      user_id: current_user.id,
      date: Time.now,
      status: 'success',
      total_price: klass.price.to_f,
      discounted_total: 0,
    )

    order_product = OrderProduct.create!(
      order_id: order.id,
      product_type: klass.class.name.underscore,
      product_id: klass.id,
      name: klass.title,
      description: klass.description,
      price: klass.price,
      quanty: 1,
      classification: klass.class.name.underscore,
      discount_id: nil
    )

    TalentClassCustomer.create!(user_id: current_user.id, talent_class_id: klass.id)

    PackRedemption.create!(pack_id: credits[:pack_id] , order_product_id: order_product.id , user_id: current_user.id)
  end
end