# encoding: utf-8

class Qa
  include Mongoid::Document
  include Mongoid::Timestamps
  include Mongoid::MultiParameterAttributes
  
  scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }

  field :title, localize: true
  field :answer, localize: true
  
  has_and_belongs_to_many :tags, :class_name => "FaqTag"
  

  field :create_user_id
  field :update_user_id
  
  field :is_top, :type => Boolean, :default => false 
  field :is_hot, :type => Boolean, :default => false 
  field :is_hidden, :type => Boolean, :default => false 

  scope :can_display,where(is_hidden: false)

  has_many :qa_links, :autosave => true, :dependent => :destroy
  has_many :qa_files, :autosave => true, :dependent => :destroy
  
  accepts_nested_attributes_for :qa_files, :allow_destroy => true
  accepts_nested_attributes_for :qa_links, :allow_destroy => true
  
  belongs_to :qa_category
  
  before_save :update_avliable_language, :clean_values

  validates :title, :at_least_one => true


  def self.search( category_id = nil )
  
	if category_id.to_s.size > 0
	
	  find(:all, :conditions => {qa_category_id: category_id}).desc( :is_top, :title )

	else
	  
	  find(:all).desc( :is_top, :title)
	  
	end
	
  end


  def self.widget_datas
  
	where( :is_hidden => false ).desc(:is_top, :created_at)

  end

  def is_top?
    self.is_top
  end 

  def sorted_tags
    tags.order_by(I18n.locale, :asc)
  end
  
  def update_avliable_language
    VALID_LOCALES.each  do |locale|
      if (title_translations[locale].blank? rescue true)
        self["available_for_#{locale}".to_sym] = false 
      else
        self["available_for_#{locale}".to_sym] = true
      end
    end
  end

  protected

  def qa_category_with_title
    self.qa_category.title
  end

  def clean_values
    self.qa_links.each do |link|
      link.delete if link.url.blank? && link.title.blank?
    end
    self.tag_ids.delete('')
  end
  
end