class FeedsController < ApplicationController
	skip_before_action :verify_authenticity_token
	def notify_change
		feed = SiteFeed.where(:feed_uid=>params[:uid]).first
		feed_annc = SiteFeedAnnc.where(:feed_id=>feed.id).first
		if feed_annc
			feeds_model = feed.feeds_model
			if feeds_model.present?
				feeds_model = feeds_model.constantize
			end
			feed_id = feed.id
			feeds_uid_field = feed.feeds_uid_field rescue nil
			feeds_update_callback = feed.feeds_update_callback rescue nil
			feeds_time_field = feed.feeds_time_field
			feeds_finish_callback = feed.feeds_finish_callback
			category_id = feed.merge_with_category
			can_create_record = feeds_model && feeds_uid_field && feeds_update_callback
			locales = Site.first.in_use_locales rescue I18n.available_locales
			locales.map!{|l| l.to_s}
			site_root_url = Site.first.root_url rescue ""
			main_directory = File.join("#{Rails.root}","public","site_feeds")
			feed_directory = File.join(main_directory.to_s, feed.id.to_s)
			feed_data = JSON.parse(File.read(File.join(feed_directory.to_s, feed.feed_uid + ".json")))
			channel_key_pluralize = feed_annc.channel_key.pluralize
			need_write = true
			if params[:type] == 'create'
				trans = {}
				locales.each do |locale|
					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
				params[:data].each do |a|
					a = JSON.parse(a)
					a["category_id"] = category_id
					locales.each do |locale|
						locale_sym = locale.to_sym
						time_field_value = Time.parse(a[feeds_time_field]) rescue a[feeds_time_field]
						if feed_annc[:all_contents_for_feed][locale_sym].index{|aa| aa["id"] == a["id"]}
							next
						end
						insert_idx = 0
						if time_field_value
							insert_idx = feed_annc[:all_contents_for_feed][locale_sym].index{|aa| (aa["org_is_top"] < a["org_is_top"] rescue false) || ((aa["org_is_top"] == a["org_is_top"]) && (aa[feeds_time_field] <= time_field_value))}
							if insert_idx.nil?
								insert_idx = ((a["org_is_top"] == 1) ? 0 : -1)
							end
						end
						feed_annc.all_contents_for_feed_will_change!
						feed_annc[:all_contents_for_feed][locale_sym].insert(insert_idx, feed_annc.process_tmp(a,locale,trans,site_root_url))
						feed_data[channel_key_pluralize].insert(insert_idx, a)
					end
					if can_create_record
						record = feeds_model.where(feeds_uid_field=>a["id"], :site_feed_id=>feed_id).first
						if record.nil?
							record = feeds_model.new
							record.instance_variable_set(:@skip_callback, true)
							record[feeds_uid_field] = a["id"]
							record[:site_feed_id] = feed_id
							record.save
							record.instance_variable_set(:@skip_callback, true)
						end
						record.send(feeds_update_callback, a)
					end
				end
				feed_annc.instance_variable_set(:@skip_callback, true)
				feed_annc.save!
			elsif params[:type] == 'update'
				trans = {}
				locales.each do |locale|
					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
				params[:data].each do |a|
					a = JSON.parse(a)
					a["category_id"] = category_id
					locales.each do |locale|
						locale_sym = locale.to_sym
						time_field_value = Time.parse(a[feeds_time_field]) rescue a[feeds_time_field]
						has_create = false
						feed_annc[:all_contents_for_feed][locale_sym].each_with_index do |aa, i|
							if aa["id"] == a["id"]
								feed_annc.all_contents_for_feed_will_change!
								feed_annc[:all_contents_for_feed][locale_sym][i] = feed_annc.process_tmp(a,locale,trans,site_root_url)
								feed_data[channel_key_pluralize][i] = a
								has_create = true
								break
							end
						end
						unless has_create
							insert_idx = 0
							if time_field_value
								insert_idx = feed_annc[:all_contents_for_feed][locale_sym].index{|aa| (aa["org_is_top"] < a["org_is_top"] rescue false) || ((aa["org_is_top"] == a["org_is_top"]) && (aa[feeds_time_field] <= time_field_value))}
								if insert_idx.nil?
									insert_idx = ((a["org_is_top"] == 1) ? 0 : -1)
								end
							end
							feed_annc.all_contents_for_feed_will_change!
							feed_annc[:all_contents_for_feed][locale_sym].insert(insert_idx, feed_annc.process_tmp(a,locale,trans,site_root_url))
							feed_data[channel_key_pluralize].insert(insert_idx, a)
						end
					end
					if can_create_record
						record = feeds_model.where(feeds_uid_field=>a["id"], :site_feed_id=>feed_id).first
						if record.nil?
							record = feeds_model.new
							record.instance_variable_set(:@skip_callback, true)
							record[feeds_uid_field] = a["id"]
							record[:site_feed_id] = feed_id
							record.save
							record.instance_variable_set(:@skip_callback, true)
						end
						record.send(feeds_update_callback, a)
					end
				end
				feed_annc.instance_variable_set(:@skip_callback, true)
				feed_annc.save!
			elsif params[:type] == 'destroy'
				locales.each do |locale|
					locale_sym = locale.to_sym
					feed_annc.all_contents_for_feed_will_change!
					feed_annc[:all_contents_for_feed][locale_sym].reject!{|a| params[:data].include?(a["id"]) }
					feed_data[channel_key_pluralize].reject!{|a| params[:data].include?(a["id"]) }
				end
				feed_annc.instance_variable_set(:@skip_callback, true)
				feed_annc.save!
				if can_create_record
					feeds_model.where(feeds_uid_field.to_sym.in =>params[:data].map{|a| a["id"]}, :site_feed_id=>feed_id).destroy
				end
			elsif params[:type] == 'update_all'
				feed_data = params[:data]
				FileUtils.mkdir_p(feed_directory) if !File.exists?(feed_directory)
				File.open(File.join(feed_directory.to_s,feed.feed_uid + ".json"),"w") do |file|
					feed_data.force_encoding("utf-8")
					file.write(feed_data)
				end
				need_write = false
				feed_annc.all_contents_for_feed_will_change!
				feed_annc[:all_contents_for_feed] = feed_annc.cache_annc
				feed_annc.save!
				if feeds_finish_callback
					feeds_model.send(feeds_finish_callback, 'update_all', {"data"=>feed.get_annc(false),"feed_id"=>feed.id,"category_id"=>feed.merge_with_category})
				end
			end
			if need_write
				feed_data = feed_data.to_json
				FileUtils.mkdir_p(feed_directory) if !File.exists?(feed_directory)
				File.open(File.join(feed_directory.to_s,feed.feed_uid + ".json"),"w") do |file|
					feed_data.force_encoding("utf-8")
					file.write(feed_data)
				end
				if feeds_finish_callback
					feeds_model.send(feeds_finish_callback, params[:type])
				end
			end
		end
		render :json => {success: true}
	end
end