module ApplicationHelper

  FLASH_NOTICE_KEYS = [:error, :notice, :warning]
  
  def colorize_in_use_locale(locale)
    @site_in_use_locales.include?(locale)? 'green' : 'red'
  end
  
  def flash_messages
    return unless messages = flash.keys.select{|k| FLASH_NOTICE_KEYS.include?(k)}
    formatted_messages = messages.map do |type|      
      content_tag :div, :class => type.to_s do
        message_for_item(flash[type], flash["#{type}_item".to_sym])
      end
    end
    raw(formatted_messages.join)
  end
  
  def link_back
     link_to t('back'), session[:last_page]
  end

  def message_for_item(message, item = nil)
    if item.is_a?(Array)
      message % link_to(*item)
    else
      message % item
    end
  end

end