Intro to DSLs - Part 2 Answers

gistfile1.rb

# lib/part_2/credit_score.rb
require_relative 'consumer'

module CreditScore
  def self.simulate(&block)
    consumer = Consumer.new
    consumer.instance_eval(&block)
    consumer.score
  end
end

# lib/part_2/consumer.rb
class Consumer
  attr_accessor :score

  def initialize
    @score = 0
  end

  # TODO Part 2
  # Implement the DSL actions as methods to modify the consumer's score
  def pay_bill(account, amount)
    return @score += 1 if amount == 0
    @score += (amount / 100.0).ceil
  end

  def awarded_credit(amount)
    @score += (amount / 1000).ceil
  end

  def missed_payment(account, amount)
    @score -= (amount.abs / 100.0).ceil
  end
end