class Lookbook::Engine

def component_paths
  @component_paths ||= begin
    paths = [*config.lookbook.component_paths, *view_paths, host_app_path]
    Utils.normalize_paths(paths)
  end
end

def enabled?
  config.lookbook.enabled
end

def files_updated!
  @updated_at = DateTime.now
end

def host_app_path
  Rails.application.root.join("app")
end

def mount_path
  config.lookbook.mount_path || Lookbook::Config.defaults.mount_path
end

def notifications
  @notifications ||= Notifications.new
end

def start
  raise "Lookbook is already started!" if @started
  info("Starting Lookbook in #{Lookbook.env} mode...")
  if watch_files?
    Reloaders.register(Previews.reloader)
    Reloaders.register(Pages.reloader)
    Reloaders.execute
  else
    Previews.load
    Pages.load
  end
  @started = true
  info("Lookbook started#{" - watching filesystem for changes" if watch_files?}")
end

def updated_at
  @updated_at ||= DateTime.now
end

def view_paths
  @view_paths ||= begin
    # handle view path registry changes in Rails 7.1
    paths = if defined?(ActionView::PathRegistry)
      ActionView::PathRegistry.all_file_system_resolvers.map(&:path)
    else
      ActionView::ViewPaths.all_view_paths.flat_map(&paths)
    end
    Utils.normalize_paths(paths.map(&:to_s))
  end
end

def watch_files?
  config.lookbook.reload_on_change
end