nas/app/services/process_references_service.rb

254 lines
7.8 KiB
Ruby

# frozen_string_literal: true
class ProcessReferencesService < BaseService
include Payloadable
include FormattingHelper
include Redisable
include Lockable
DOMAIN = ENV['WEB_DOMAIN'] || ENV.fetch('LOCAL_DOMAIN', nil)
REFURL_EXP = /(RT|QT|BT|RN|RE)((:|;)?\s+|:|;)(#{URI::DEFAULT_PARSER.make_regexp(%w(http https))})/
QUOTEURL_EXP = /(QT|RN|RE)((:|;)?\s+|:|;)(#{URI::DEFAULT_PARSER.make_regexp(%w(http https))})/
MAX_REFERENCES = 5
def call(status, reference_parameters, urls: nil, fetch_remote: true, no_fetch_urls: nil, quote_urls: nil)
@status = status
@reference_parameters = reference_parameters || []
@quote_urls = quote_urls || []
@urls = (urls - @quote_urls) || []
@no_fetch_urls = no_fetch_urls || []
@fetch_remote = fetch_remote
@again = false
@attributes = {}
with_redis_lock("process_status_refs:#{@status.id}") do
@references_count = @status.reference_objects.count
build_references_diff
if @added_items.present? || @removed_items.present? || @changed_items.present?
StatusReference.transaction do
remove_old_references
add_references
change_reference_attributes
@status.save!
end
create_notifications!
end
end
launch_worker if @again
end
def self.need_process?(status, reference_parameters, urls, quote_urls)
reference_parameters.any? || (urls || []).any? || (quote_urls || []).any? || FormattingHelper.extract_status_plain_text(status).scan(REFURL_EXP).pluck(3).uniq.any?
end
def self.extract_uris(text, remote: false)
return text.scan(REFURL_EXP).pluck(3) unless remote
PlainTextFormatter.new(text, false).to_s.scan(REFURL_EXP).pluck(3)
end
def self.extract_quote(text)
text.scan(QUOTEURL_EXP).pick(3)
end
def self.perform_worker_async(status, reference_parameters, urls, quote_urls)
return unless need_process?(status, reference_parameters, urls, quote_urls)
ProcessReferencesWorker.perform_async(status.id, reference_parameters, urls, [], quote_urls || [])
end
def self.call_service(status, reference_parameters, urls, quote_urls = [])
return unless need_process?(status, reference_parameters, urls, quote_urls)
ProcessReferencesService.new.call(status, reference_parameters || [], urls: urls || [], fetch_remote: false, quote_urls: quote_urls)
end
def self.call_service_without_error(status, reference_parameters, urls, quote_urls = [])
return unless need_process?(status, reference_parameters, urls, quote_urls)
begin
ProcessReferencesService.new.call(status, reference_parameters || [], urls: urls || [], quote_urls: quote_urls)
rescue
true
end
end
private
def build_old_references
@status.reference_objects.pluck(:target_status_id, :attribute_type).to_h
end
def build_new_references
scan_text_and_quotes.tap do |status_id_to_attributes|
@reference_parameters.each do |status_id|
id_num = status_id.to_i
status_id_to_attributes[id_num] = 'BT' unless id_num.positive? && status_id_to_attributes.key?(id_num)
end
end
end
def build_references_diff
olds = build_old_references
news = build_new_references
@changed_items = {}
@added_items = {}
@removed_items = {}
news.each_key do |status_id|
exist_attribute = olds[status_id]
@added_items[status_id] = news[status_id] if exist_attribute.nil?
@changed_items[status_id] = news[status_id] if olds.key?(status_id) && exist_attribute != news[status_id]
end
olds.each_key do |status_id|
new_attribute = news[status_id]
@removed_items[status_id] = olds[status_id] if new_attribute.nil?
end
end
def scan_text_and_quotes
text = extract_status_plain_text(@status)
url_to_attributes = @urls.index_with('BT')
.merge(text.scan(REFURL_EXP).to_h { |result| [result[3], result[0]] })
.merge(@quote_urls.index_with('QT'))
url_to_statuses = fetch_statuses(url_to_attributes.keys.uniq)
@again = true if !@fetch_remote && url_to_statuses.values.any?(&:nil?)
url_to_statuses.keys.to_h do |url|
attribute = url_to_attributes[url] || 'BT'
status = url_to_statuses[url]
if status.present?
quote = quote_attribute?(attribute)
[status.id, !quote || quotable?(status) ? attribute : 'BT']
else
[url, attribute]
end
end
end
def quote_attribute?(attribute)
%w(QT RE).include?(attribute)
end
def fetch_statuses(urls)
urls.to_h do |url|
status = url_to_status(url)
@no_fetch_urls << url if !@fetch_remote && status.present?
[url, status]
end
end
def url_to_status(url)
status = ActivityPub::TagManager.instance.uri_to_resource(url, Status, url: true)
status ||= ResolveURLService.new.call(url, on_behalf_of: @status.account) unless bad_url_to_fetch?(url)
referrable?(status) ? status : nil
end
def bad_url_to_fetch?(url)
uri = Addressable::URI.parse(url).normalize
!@fetch_remote || @no_fetch_urls.include?(url) || uri.host.blank? || Setting.stop_fetch_activity_domains&.include?(uri.host)
end
def referrable?(target_status)
return false if target_status.nil?
return @referrable if defined?(@referrable)
@referrable = StatusPolicy.new(@status.account, target_status).show?
end
def quotable?(target_status)
target_status.account.allow_quote? && StatusPolicy.new(@status.account, target_status).quote?
end
def add_references
return if @added_items.empty?
@added_objects = []
statuses = Status.where(id: @added_items.keys).to_a
@added_items.each_key do |status_id|
status = statuses.find { |s| s.id == status_id }
next if status.blank?
attribute_type = @added_items[status_id]
quote = quote_attribute?(attribute_type)
@added_objects << @status.reference_objects.new(target_status: status, attribute_type: attribute_type, quote: quote)
@status.update!(quote_of_id: status_id) if quote
status.increment_count!(:status_referred_by_count)
@references_count += 1
break if @references_count >= MAX_REFERENCES
end
end
def create_notifications!
return if @added_objects.blank?
local_reference_objects = @added_objects.filter { |ref| ref.target_status.account.local? && StatusPolicy.new(ref.target_status.account, ref.status).show? }
return if local_reference_objects.empty?
LocalNotificationWorker.push_bulk(local_reference_objects) do |ref|
[ref.target_status.account_id, ref.id, 'StatusReference', 'status_reference']
end
end
def remove_old_references
return if @removed_items.empty?
@removed_objects = []
@status.reference_objects.where(target_status: @removed_items.keys).destroy_all
@status.update!(quote_of_id: nil) if @status.quote_of_id.present? && @removed_items.key?(@status.quote_of_id)
statuses = Status.where(id: @added_items.keys).to_a
@removed_items.each_key do |status_id|
status = statuses.find { |s| s.id == status_id }
next if status.blank?
status.decrement_count!(:status_referred_by_count)
@references_count -= 1
end
end
def change_reference_attributes
return if @changed_items.empty?
@changed_objects = []
@status.reference_objects.where(target_status: @changed_items.keys).find_each do |ref|
attribute_type = @changed_items[ref.target_status_id]
quote = quote_attribute?(attribute_type)
quote_change = ref.quote != quote
ref.update!(attribute_type: attribute_type, quote: quote)
next unless quote_change
if quote
ref.status.update!(quote_of_id: ref.target_status.id)
else
ref.status.update!(quote_of_id: nil)
end
end
end
def launch_worker
ProcessReferencesWorker.perform_async(@status.id, @reference_parameters, @urls, @no_fetch_urls, @quote_urls)
end
end