module Dust
  class MenuItem < ActiveRecord::Base
    attr_accessible :title, :url, :active, :lft, :rgt, :parent_id, :menu_id

    acts_as_nested_set

    belongs_to :menu
    belongs_to :linkable, :polymorphic => true
    validates_uniqueness_of :url

    scope :sitemap, :select => 'url, created_at, updated_at', :limit => 50000

    def self.page(search, page)
      search(search).order("title").paginate(:per_page => 12, :page => page)
    end

    def self.manage(search)
      roots.search(search).order("title")
    end

    def self.search(search)
      if search
        where("title LIKE ?", "%#{search}%")
      else
        scoped
      end
    end

    def self.menu
      list = self.roots
      list.where("active = ?", true)
    end

    def edit_linkable
      "/#{root.linkable_type.downcase.pluralize}/#{root.linkable_id}/edit"
    end

    def destroy_linkable
      "/#{root.linkable_type.downcase.pluralize}/#{root.linkable_id}"
    end

    def children_urls
      self.descendants.map{ |item| item.url }
    end

    REGEX = '^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$'

    def html_options?(uri)
      mash = Hashie::Mash.new 

      mash.class = "last" if self == self.self_and_siblings.all(:conditions => ['active = ?', true]).last
      mash.target = "_blank" if url.match(REGEX)
      mash.class = "active" if self.is_active? uri
      mash.class = "active last" if (self.is_active? uri) and self == self.self_and_siblings.last
      mash
    end

    def is_active?(uri)
      true if uri == url or children_urls.include?(uri) or (uri == "/" and self.url == "/welcome")
    end

  end
end