module ActionController
    
  module MuckApplication
    
    module ClassMethods

    end

    module InstanceMethods
      private

      def set_locale
        
        # TODO add set local code
        # http://zargony.com/2009/01/09/selecting-the-locale-for-a-request
        # preferred_locales = request.headers['HTTP_ACCEPT_LANGUAGE'].split(',').map { |l| l.split(';').first }
        # I18n.locale = preferred_locales.select { |l| I18n.available_locales.include?(l.to_sym) }
        # 
        # if params[:locale] && I18n.available_locales.include?(params[:locale].to_sym)
        #   cookies['locale'] = { :value => params[:locale], :expires => 1.year.from_now }
        #   I18n.locale = params[:locale].to_sym
        # elsif cookies['locale'] && I18n.available_locales.include?(cookies['locale'].to_sym)
        #   I18n.locale = cookies['locale'].to_sym
        # end
        # 
        # session[:locale] = params[:locale] if params[:locale]
        # if http_lang = request.env["HTTP_ACCEPT_LANGUAGE"] and ! http_lang.blank?
        #   browser_locale = http_lang[/^[a-z]{2}/i].downcase + '-' + http_lang[3,2].upcase
        #   browser_locale.sub!(/-US/, '')
        # end
        # I18n.locale = session[:locale] || cookies[:locale] || browser_locale || I18n.default_locale || 'en'
        # 
        # set_will_paginate_string if defined? WillPaginate
        # 
        # #@locales_available ||= I18n.load_path.collect do |locale_file|
        # #  File.basename(File.basename(locale_file, '.rb'), '.yml')
        # #end.uniq.sort
        # @locales_available ||= [["English", "en"]]
      end

      def setup_paging
        @page = (params[:page] || 1).to_i
        @page = 1 if @page < 1
        @per_page = (params[:per_page] || (RAILS_ENV=='test' ? 1 : 40)).to_i
      end

      def set_will_paginate_string
        # Because I18n.locale are dynamically determined in ApplicationController, 
        # it should not put in config/initializers/will_paginate.rb
        WillPaginate::ViewHelpers.pagination_options[:previous_label] = t('common.previous_page')
        WillPaginate::ViewHelpers.pagination_options[:next_label] = t('common.next_page')
      end

      def get_redirect_to
        if params[:redirect_to]
          redirect_to params[:redirect_to]
        else
          yield
        end
      end

    end

    def self.included(receiver)
      receiver.extend ClassMethods
      receiver.class_eval do
        include InstanceMethods
        before_filter :set_locale
      end
    end

  end

end