module Migrate
  def self.call
    puts ['feeds migrate start']
    gem_root = Feeds::Engine.root
    require File.join(gem_root, 'app/models/site_feed')
    require File.join(gem_root, 'app/models/site_feed_annc')

    locales = Site.first.in_use_locales rescue I18n.available_locales
    trans = {}
    locales.each do |locale|
      locale = locale.to_s
      trans[locale] = {}
      I18n.with_locale(locale) do
        trans[locale]['top'] = I18n.t(:top)
        trans[locale]['hot'] = I18n.t(:hot)
        trans[locale]['more_plus'] = I18n.t("feed.more")
      end
    end
    org_remote_site_urls = SiteFeed.all.pluck(:remote_site_url).uniq
    all_remote_site_urls = org_remote_site_urls.map{|a| a.split('://')[1]}.uniq
    all_remote_site_urls.each do |remote_site_url|
      match_urls = org_remote_site_urls.select{|s| s.include?("://#{remote_site_url}")}
      if match_urls.count == 2
        SiteFeed.where(:remote_site_url.in=>match_urls).update_all(:remote_site_url=>"https://#{remote_site_url}")
        SiteFeedAnnc.where(:remote_site_url.in=>match_urls).update_all(:remote_site_url=>"https://#{remote_site_url}")
      end
    end
    SiteFeed.all.order_by(:channel_title=>-1).to_a.group_by(&:remote_site_url).each do |url, site_feeds|
      site_feed = site_feeds.first
      channel_title_translations = site_feed.channel_title_translations
      SiteFeed.where(:id.in=>site_feeds[1..-1].map{|sf| sf.id}).update_all(:channel_title_translations => channel_title_translations)
    end
    SiteFeedAnnc.where(:feed_id.nin=>SiteFeed.all.pluck(:id)).destroy
    SiteFeed.each do |site_feed|
      site_feed.add_notify
      count = SiteFeedAnnc.where(feed_id: site_feed.id).count
      if count>1
        SiteFeedAnnc.where(feed_id: site_feed.id).limit(count-1).destroy
      end
      tmp = SiteFeedAnnc.where(feed_id: site_feed.id).first
      if site_feed.disabled != true
        if tmp.nil?
          tmp = SiteFeedAnnc.new(feed_id: site_feed.id)
        end
        site_feed.sync_data_to_annc(tmp)
        tmp.raw_all_contents_for_feed_translations = tmp.cache_annc(false,locales,trans)
        tmp.save
        if site_feed.feeds_model && site_feed.feeds_finish_callback
          feeds_model = site_feed.feeds_model.constantize
          feeds_model.send(site_feed.feeds_finish_callback, "update_all", {"data"=>site_feed.get_annc(false),"feed_id"=>site_feed.id,"category_id"=>site_feed.merge_with_category})
        end
      elsif !tmp.nil?
        tmp.destroy
      end
    end
    SiteFeedAnnc.create_indexes
    sync_fields = SiteFeed::ModuleAppSyncFields
    ModuleApp.where(:feeds_model.ne=>nil).each do |module_app|
      sync_fields_data = sync_fields.map{|f| [f, module_app[f]] }.to_h
      SiteFeedAnnc.where(:channel_key=>module_app.key).update_all(sync_fields_data)
      SiteFeed.where(:channel_key=>module_app.key).update_all(sync_fields_data)
    end
    SiteFeedAnnc.update_all({"$unset" => {"all_contents_for_feed" => ""}})
    puts ['feeds migrate finished']
  end
end