class PoolVersionsController < ApplicationController
  respond_to :html, :xml, :json
  before_filter :check_availabililty

  def index
    if params[:search] && params[:search][:pool_id].present?
      @pool = Pool.find(params[:search][:pool_id])
    end

    @pool_versions = PoolArchive.search(params[:search]).order("updated_at desc").paginate(params[:page], :limit => params[:limit], :search_count => params[:search])
    respond_with(@pool_versions) do |format|
      format.xml do
        render :xml => @pool_versions.to_xml(:root => "pool-versions")
      end
    end
  end

  def diff
    @pool_version = PoolArchive.find(params[:id])

    if params[:other_id]
      @other_version = PoolArchive.find(params[:other_id])
    else
      @other_version = @pool_version.previous
    end
  end

private

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