class WikiPageVersionsController < ApplicationController
  respond_to :html, :xml, :json
  layout "sidebar"

  def index
    @wiki_page_versions = WikiPageVersion.paginated_search(params).includes(model_includes(params))
    respond_with(@wiki_page_versions)
  end

  def show
    @wiki_page_version = WikiPageVersion.find(params[:id])
    respond_with(@wiki_page_version)
  end

  def diff
    if params[:thispage].blank? || params[:otherpage].blank?
      redirect_back fallback_location: wiki_pages_path, notice: "You must select two versions to diff"
      return
    end

    @thispage = WikiPageVersion.find(params[:thispage])
    @otherpage = WikiPageVersion.find(params[:otherpage])

    if @thispage.id < @otherpage.id
      @thispage, @otherpage = @otherpage, @thispage
    end

    respond_with([@thispage, @otherpage])
  end

  private

  def default_includes(params)
    if ["json", "xml"].include?(params[:format])
      []
    else
      [:updater]
    end
  end
end