class VersionsController < ApplicationController

  # Action permissions for this class as a class variable, exposed
  # to the public through a class method.

  @@hubssolib_permissions = HubSsoLib::Permissions.new({
                              :new    => [ :admin, :webmaster, :privileged, :normal ],
                              :create => [ :admin, :webmaster, :privileged, :normal ]
                            })

  def VersionsController.hubssolib_permissions
    @@hubssolib_permissions
  end

  cache_sweeper :page_sweeper, :only => [ :create ]
  before_filter :find_book

  def show
    @page    = @book.pages.find_by_title(params[:page_title])
    @version = @page.versions[params[:version_number].to_i - 1]
  end

  def new
    Book.transaction do
      @page    = @book.find_or_build_page(params[:page_title])
      @version = @page.find_or_build_version(params[:version_number])
    end

    @author_name = hubssolib_unique_name
  end

  def create
    Book.transaction do
      @page   = @book.find_or_create_page(params[:page])
      version = @page.versions.build(params[:version])
      version.author = @book.find_or_create_author(params[:author_name], request.remote_ip)
      version.save
    end

    redirect_to page_url(:page_title => @page)
  end
end