module Comable
  class Page < ActiveRecord::Base
    include Comable::Ransackable
    extend FriendlyId

    PREVIEW_SESSION_KEY = :preview_page

    friendly_id :title, use: :slugged

    validates :title, length: { maximum: 255 }, presence: true
    validates :content, presence: true
    validates :page_title, length: { maximum: 255 }
    validates :meta_description, length: { maximum: 255 }
    validates :meta_keywords, length: { maximum: 255 }
    validates :slug, length: { maximum: 255 }, presence: true, uniqueness: true

    scope :by_newest, -> { reorder(created_at: :desc) }

    def published?
      published_at.present? && published_at <= Time.now
    end

    def default_slug
      id ||= self.class.maximum(:id).next
      "pages_#{id}"
    end

    def normalize_slug(string)
      normalize_friendly_id(string).presence || default_slug
    end
  end
end