EasyBroker_test001

comerce.rb

class Product
  attr_reader :name, :description, :price_cents
  def initialize(name, description, price_cents)
    @name = name
    @description = description
    @price_cents = price_cents
  end

  def price
    return @price_cents / 100
  end
end

class Discount
  attr_reader :name, :condition, :off_percent
  def initialize(name, off_percent, condition)
    @name = name
    @off_percent = off_percent
    @condition = condition
  end

  def label
    return "#{off_percent * 100}%"
  end
end

class ShopingCar
  attr_accessor :products

  def initialize
    @discounts = []
  end

  def total_cents
    return products.map(&:price_cents).sum
  end

  def total
    return total_cents / 100
  end

  def receipt
    list = products.map do |product|
      "#{product.name}: #{product.price}"
    end

    receipt = []
    receipt << list.join("\n")
    receipt << "Total: #{total}"

    final_total_cents = total_cents
    unless @discounts.empty?
      receipt << "Discounts :)"
      @discounts.each do |discount|
        final_total_cents *= 1 - discount.off_percent
        receipt << "#{discount.name}: #{discount.label}"
      end
    end

    receipt << "Final total: #{final_total_cents/100}"

    return receipt.join("\n")
  end

  def apply_discount(discount)
    if total_cents > discount.condition
      @discounts << discount
    end
  end
end

def main
  products = []

  products << Product.new( "Balero pequeño", "Rojo. 20gr", 2000 )
  products << Product.new("Balero grande", "Rojo. 80gr", 8000)
  products << Product.new( "Balero chino", "Rojo. 50gr", 5000 )

  discount = Discount.new("Navidad", 0.05, 10000)

  car = ShopingCar.new

  car.products = products

  car.apply_discount(discount)

  puts car.receipt
end

main()