module FeedModel
  module Cache
    require 'active_support/concern'
    extend ActiveSupport::Concern
    extend self
    included do
      before_save :do_before_save
    end
    def recreate_annc_cache(feed)
      count = SiteFeedAnnc.where(feed_id: feed.id).count
      if count>1
        SiteFeedAnnc.where(feed_id: feed.id).limit(count-1).destroy
      end
      tmp = SiteFeedAnnc.where(feed_id: feed.id).first
      if tmp.nil?
        tmp = SiteFeedAnnc.new(feed_id: feed.id)
      end
      tmp.all_contents_for_feed = tmp.cache_annc(true)
      tmp.save
      if feed.feeds_model && feed.feeds_finish_callback
        feeds_model = feed.feeds_model.constantize
        feeds_model.send(feed.feeds_finish_callback, "update_all", {"data"=>feed.get_annc(false),"feed_id"=>feed.id,"category_id"=>feed.merge_with_category})
      end
    end
    def do_before_save
      unless @skip_callback
        if self.class == Category
          Thread.new do
            SiteFeedAnnc.where(merge_with_category: self.id.to_s).each do |site_feed_annc|
              recreate_annc_cache(site_feed_annc)
            end
          end
        elsif self.class == SiteFeed
          if self.disabled != true
            Thread.new do
              recreate_annc_cache(self)
            end
          else
            tmp = SiteFeedAnnc.where(feed_id: self.id).first
            if !tmp.nil?
              tmp.destroy
            end
          end
        end
      end
    end
  end
end