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# frozen_string_literal: true
class BatchedRemoveStatusService < BaseService
include Redisable
# Delete given statuses and reblogs of them
# Dispatch PuSH updates of the deleted statuses, but only local ones
# Dispatch Salmon deletes, unique per domain, of the deleted statuses, but only local ones
# Remove statuses from home feeds
# Push delete events to streaming API for home feeds and public feeds
# @param [Enumerable<Status>] statuses A preferably batched array of statuses
# @param [Hash] options
# @option [Boolean] :skip_side_effects
def call(statuses, **options)
statuses = Status.where(id: statuses.map(&:id)).includes(:account).flat_map { |status| [status] + status.reblogs.includes(:account).to_a }
@mentions = statuses.each_with_object({}) { |s, h| h[s.id] = s.active_mentions.includes(:account).to_a }
@tags = statuses.each_with_object({}) { |s, h| h[s.id] = s.tags.pluck(:name) }
@json_payloads = statuses.each_with_object({}) { |s, h| h[s.id] = Oj.dump(event: :delete, payload: s.id.to_s) }
# Ensure that rendered XML reflects destroyed state
statuses.each do |status|
status.mark_for_mass_destruction!
status.destroy
end
return if options[:skip_side_effects]
# Batch by source account
statuses.group_by(&:account_id).each_value do |account_statuses|
account = account_statuses.first.account
next unless account
unpush_from_home_timelines(account, account_statuses)
unpush_from_list_timelines(account, account_statuses)
end
# Cannot be batched
statuses.each do |status|
unpush_from_public_timelines(status)
unpush_from_direct_timelines(status) if status.direct_visibility?
end
end
private
def unpush_from_home_timelines(account, statuses)
recipients = account.followers_for_local_distribution.to_a
recipients << account if account.local?
recipients.each do |follower|
statuses.each do |status|
FeedManager.instance.unpush_from_home(follower, status)
end
end
end
def unpush_from_list_timelines(account, statuses)
account.lists_for_local_distribution.select(:id, :account_id).each do |list|
statuses.each do |status|
FeedManager.instance.unpush_from_list(list, status)
end
end
end
def unpush_from_public_timelines(status)
return unless status.public_visibility?
payload = @json_payloads[status.id]
redis.pipelined do
redis.publish('timeline:public', payload)
redis.publish('timeline:public:local', payload) if status.local?
if status.media_attachments.any?
redis.publish('timeline:public:media', payload)
redis.publish('timeline:public:local:media', payload) if status.local?
end
@tags[status.id].each do |hashtag|
redis.publish("timeline:hashtag:#{hashtag.mb_chars.downcase}", payload)
redis.publish("timeline:hashtag:#{hashtag.mb_chars.downcase}:local", payload) if status.local?
end
end
end
def unpush_from_direct_timelines(status)
payload = @json_payloads[status.id]
redis.pipelined do
@mentions[status.id].each do |mention|
FeedManager.instance.unpush_from_direct(mention.account, status) if mention.account.local?
end
FeedManager.instance.unpush_from_direct(status.account, status) if status.account.local?
end
end
end
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