module ExpressionEngine
  module Models
 
    class Site < ActiveRecord::Base
      set_table_name 'exp_sites'
      set_primary_key 'site_id'
      
      has_many :template_groups
      has_many :templates
 
      PREFERENCE_PATHS = [
        'system:theme_folder_path',
        'system:captcha_path',
        'template:tmpl_file_basepath',
        'member:avatar_path',
        'member:photo_path'
      ]
 
      def name
        self.site_label
      end
      
      def slug
        self.site_name
      end
     
      def preferences
        if @preferences.nil?
          @preferences = {}
          [:system, :mailing_list, :member, :template, :weblog].each do |key|
            method = 'site_' + key.to_s.gsub('_', '') + '_preferences'
            @preferences[key] = ExpressionEngine::Preference.new(self.send(method))
          end
        end
        @preferences
      end
 
      def root_path=(other)
        pattern = Regexp.quote(self.root_path)
        PREFERENCE_PATHS.each do |preference|
          group, setting = preference.split(':')
          self.preferences[group.to_sym][setting.to_sym].gsub!(/^#{pattern}/, other)
        end
      end
 
      def root_path
        common_elements = nil
        
        PREFERENCE_PATHS.each do |preference|
          group, setting = preference.split(':')
          path = self.preferences[group.to_sym][setting.to_sym].split('/')
 
          unless path.empty?
            common_elements = path if common_elements.nil?
            common_elements = common_elements & path
          end
        end
        
        common_elements.join('/')
      end
      
    end
    
  end
end