rails.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile do
  source "https://rubygems.org"
  gem "rails", "7.1.3.2"
end

require "action_controller/railtie"
require "rackup"

module KakaDudu
  class Reverse
    def initialize(app) = @app = app

    def call(env)
      status, headers, response = @app.call(env)
      [status, headers, [response.body.reverse]]
    end
  end

  class Application < Rails::Application
    config.consider_all_requests_local = true
    config.eager_load = false
    config.load_defaults "7.1"
    config.root = __dir__
    config.secret_key_base = "dupa.8"

    routes.append do
      get "/original", to: "kaka_dudu/self#original"
      # get "/remake", to: Reverse.new(KakaDudu::SelfController.action(:remake))
      get "/remake", to: "kaka_dudu/self#remake"
    end
  end

  class SelfController < ActionController::Base
    def original = render plain: "kaka dudu"
    def remake = render plain: "dudu kaka"
  end
end

KakaDudu::Application.initialize!

app =
  Rack::Builder.new do
    run do |env|
      app_ =
        if env["PATH_INFO"] == "/reverse"
          KakaDudu::Reverse.new(KakaDudu::Application)
        else
          KakaDudu::Application
        end
      app_.call(env)
    end
  end

Rackup::Server.start(app: app)