ActiveBusiness - Proposal to ease the pain when refactoring legacy code on fat controllers

active_business.rb

# frozen_string_literal: true

# :nodoc:
class ActiveBusiness
  attr_reader :resolver
  def initialize
    @resolver = ActiveBusiness::Resolver.new
    yield resolver
  end

  def resolve_to(action)
    @resolver.responses.fetch(action) { fail("#{action} not implemented") }
  end

  # ActiveBusiness response resolver
  class Resolver
    attr_reader :responses

    def initialize
      @responses = {}
    end

    def sucess(&block)
      fail 'Response must receive a block!' unless block_given?

      @responses[:sucess] = block
    end

    def error(&block)
      fail 'Response must receive a block!' unless block_given?

      @responses[:error] = block
    end

    def method_missing(name, *_args, &block)
      # In case success and error not being enough
      fail 'Response must receive a block!' unless block_given?

      @responses[name] = block
    end
  end
end