Gab-Social/app/services/remove_status_service.rb
2021-01-17 17:36:20 -05:00

98 lines
2.7 KiB
Ruby

# frozen_string_literal: true
class RemoveStatusService < BaseService
include Redisable
def call(status, **options)
@payload = Oj.dump(event: :delete, payload: status.id.to_s)
@status = status
@account = status.account
@tags = status.tags.pluck(:name).to_a
@mentions = status.active_mentions.includes(:account).to_a
@reblogs = status.reblogs.includes(:account).to_a
@options = options
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
remove_from_self if status.account.local?
remove_from_followers
remove_from_lists
remove_from_affected
remove_reblogs
remove_from_hashtags
remove_from_pro
@status.destroy!
else
raise GabSocial::RaceConditionError
end
end
# There is no reason to send out Undo activities when the
# cause is that the original object has been removed, since
# original object being removed implicitly removes reblogs
# of it. The Delete activity of the original is forwarded
# separately.
return if !@account.local? || @options[:original_removed]
end
private
def remove_from_self
FeedManager.instance.unpush_from_home(@account, @status)
end
def remove_from_followers
@account.followers_for_local_distribution.reorder(nil).find_each do |follower|
FeedManager.instance.unpush_from_home(follower, @status)
end
end
def remove_from_lists
@account.lists_for_local_distribution.select(:id, :account_id).reorder(nil).find_each do |list|
FeedManager.instance.unpush_from_list(list, @status)
end
end
def remove_from_affected
redis.with do |conn|
@mentions.map(&:account).select(&:local?).each do |account|
conn.publish("timeline:#{account.id}", @payload)
end
end
end
def remove_reblogs
# We delete reblogs of the status before the original status,
# because once original status is gone, reblogs will disappear
# without us being able to do all the fancy stuff
@reblogs.each do |reblog|
RemoveStatusService.new.call(reblog, original_removed: true)
end
end
def remove_from_hashtags
return unless @status.public_visibility?
redis.with do |conn|
@tags.each do |hashtag|
conn.publish("timeline:hashtag:#{hashtag}", @payload)
conn.publish("timeline:hashtag:#{hashtag}:local", @payload) if @status.local?
end
end
end
def remove_from_pro
redis.with do |conn|
if @account.is_pro || @account.is_donor || @account.is_investor || @account.is_verified
conn.publish('timeline:pro', @payload)
end
end
end
def lock_options
{ redis: Redis.current, key: "distribute:#{@status.id}" }
end
end