class ApplicationController < ActionController::Base
  protect_from_forgery
  
  helper :all
  before_filter :set_locale, :set_site 
  
  # Find the parent for the given item
  def find_parent_item
    @parent_item  = Item.first(:conditions => { :id => BSON::ObjectId(params[:parent_id]) }) rescue nil
  end
  
  
  # Clean the link back
  # Remove the locale but keep all the other params
  def get_go_back
    begin
      if env['REQUEST_URI'].include?('locale=')
        session[:last_page]
      else
        target = env['HTTP_REFERER'].split('?')
        vars = target[1].split('&')
        vars.delete_if {|var| var.include? 'locale=' }
        if vars.size > 0
         target[0].to_s + '?' + vars.join('&')
        else
          target[0].to_s
        end
      end
    rescue
      nil
    end
  end
  
  # Check if the current_user is admin
  def is_admin?
    redirect_to root_url unless current_user.admin?
  end
  
  # Parse and render the pages with Radius
  def render_page
    if @page
      @layout = @page.layout
      @page_content = @page.content
      @layout_content = (@page.layout)? @layout.content : "<r:content />"
      
      
      context = Radius::Context.new do |c|
        c.define_tag 'content' do |tag|
          @page_content
        end
        c.define_tag 'snippet' do |tag|
          snippet = Snippet.first(:conditions => {:name => tag.attr['name']})
          if snippet
            snippet.content
          else
            t('nothing')
          end
        end
        c.define_tag 'language_bar' do
          @site_in_use_locales.map{ |locale|
            lang = I18nVariable.first(:conditions => {:key => locale})[locale]
            if I18n.locale.to_s.eql?(locale)
              lang
            else
              "<a href='?locale=#{locale}'>#{lang}</a>"
            end
          }.join(' | ')
        end
      end

      parser = Radius::Parser.new(context, :tag_prefix => 'r')      
      
      render :text => parser.parse(@layout_content)
    else
      render :text => '404 Not Found'
    end
  end
  
  # Set I18n.locale
  def set_locale
    # update session if passed
    session[:locale] = params[:locale] if params[:locale]

    # set locale based on session or default
    begin
      # check if locale is valid for non site pages
      if LIST[:forbidden_item_names].include?(env['PATH_INFO'].split('/')[1].to_s) && !VALID_LOCALES.include?(session[:locale])
        I18n.locale = I18n.default_locale
      else
        I18n.locale = session[:locale]
      end
    rescue
      I18n.locale = I18n.default_locale
    end    
  end
    
  # Set the site variables
  def set_site
    # set site if exist or create site
    site = Site.first || Site.create({:valid_locales => [], :in_use_locales => []})
    session[:site] = site.id
    @site_in_use_locales = site.in_use_locales
    @site_valid_locales = site.valid_locales
  end

end