ruby delegator

delegators.rb

#!/usr/bin/env ruby

# require 'pry'
# require 'byebug'

module DelegateMe
  def delegate_methods(methods, to:)
    [methods].flatten.each do |method_name|
      define_method method_name do |*arg, &block|
        base = send(to)
        base.send(method_name, *arg) do
          block.call
        end
      end
    end
  end
end

class Bear
  def name
    "Pooh"
  end

  def says(*args)
    '"' + args.to_a.join(" ") + "\", said #{name}"
  end

  def backwards(&block)
    ((yield if block_given?) || "").reverse
  end
end


class BearPresenter

  extend DelegateMe
  
  def initialize(bear)
    @bear = bear
  end

  # attr_reader
  def bear
    @bear
  end

  delegate_methods([:name, :says, :backwards], to: :bear)

end


puts "Delegating..."
bear = Bear.new
bear_presenter = BearPresenter.new(bear)
puts bear_presenter.name
puts bear_presenter.says("whatever", "man")

reversed = bear_presenter.backwards do 
  bear_presenter.says("super")
end
puts reversed