class PostVersionsController < ApplicationController
  before_action :member_only
  before_action :check_availabililty
  respond_to :html, :xml, :json

  def index
    @post_versions = PostArchive.includes(:updater, post: [:versions]).search(search_params).paginate(params[:page], :limit => params[:limit], :search_count => params[:search])
    respond_with(@post_versions) do |format|
      format.xml do
        render xml: @post_versions.to_xml(root: "post-versions")
      end
    end
  end

  def search
  end

  def undo
    @post_version = PostArchive.find(params[:id])

    if @post_version.post.visible?
      @post_version.undo!
    end

    respond_with(@post_version) do |format|
      format.js
    end
  end

  private

  def check_availabililty
    if !PostArchive.enabled?
      raise NotImplementedError.new("Archive service is not configured. Post versions are not saved.")
    end
  end
end