module Negroku
  class Feature
    include Virtus.value_object

    values do
      attribute :name, String
      attribute :required, Boolean, default: false
      attribute :enabled, Boolean, default: false, :writer => :public
    end
  end
end

class Negroku::ConfigFactory
  include Virtus.model

  def self.loaded_in_bundler(*names)
    Bundler.locked_gems.dependencies.any? { |a| names.include?(a.name) }
  end

  attribute :bower, Negroku::Feature, default: {
    name: 'bower', enabled: File.exist?('bower.json')
  }

  attribute :bundler, Negroku::Feature, default: {
    name: 'bundler', enabled: File.exist?('Gemfile')
  }

  attribute :delayed_job, Negroku::Feature, default: {
    name: 'delayed_job',
    enabled: loaded_in_bundler('delayed_job', 'delayed_job_active_record')
  }

  attribute :nginx, Negroku::Feature, default: {
    name: 'nginx', enabled: true, required: true
  }

  attribute :nodenv, Negroku::Feature, default: {
    name: 'nodenv', enabled: true, required: true
  }

  attribute :rails, Negroku::Feature, default: {
    name: 'rails', enabled: loaded_in_bundler('rails')
  }

  attribute :rbenv, Negroku::Feature, default: {
    name: 'rbenv', enabled: true, required: true
  }

  attribute :sphinx, Negroku::Feature, default: {
    name: 'sphinx', enabled: loaded_in_bundler('thinking-sphinx')
  }

  attribute :unicorn, Negroku::Feature, default: {
    name: 'unicorn', enabled: loaded_in_bundler('unicorn')
  }

  attribute :puma, Negroku::Feature, default: {
    name: 'puma', enabled: loaded_in_bundler('puma')
  }

  attribute :whenever, Negroku::Feature, default: {
    name: 'whenever', enabled: File.exist?('config/schedule.rb')
  }

  # private
end

Negroku::Config = Negroku::ConfigFactory.new