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# frozen_string_literal: true
class RevokeStatusService < BaseService
include Redisable
include Payloadable
# Unpublish a status from a given set of local accounts' timelines and public, if visibility changed.
# @param [Status] status
# @param [Enumerable] account_ids
def call(status, account_ids)
@payload = Oj.dump(event: :delete, payload: status.id.to_s)
@status = status
@account = status.account
@account_ids = account_ids
@mentions = status.active_mentions.where(account_id: account_ids)
@reblogs = status.reblogs.where(account_id: account_ids)
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
remove_from_followers
remove_from_lists
remove_from_affected
remove_reblogs
remove_from_hashtags unless @status.distributable?
remove_from_public
remove_from_media
remove_from_direct if status.direct_visibility?
else
raise Mastodon::RaceConditionError
end
end
end
private
def remove_from_followers
@account.followers_for_local_distribution.where(id: @account_ids).reorder(nil).find_each do |follower|
FeedManager.instance.unpush_from_home(follower, @status)
end
end
def remove_from_lists
@account.lists_for_local_distribution.where(account_id: @account_ids).select(:id, :account_id).reorder(nil).find_each do |list|
FeedManager.instance.unpush_from_list(list, @status)
end
end
def remove_from_affected
@mentions.map(&:account).select(&:local?).each do |account|
redis.publish("timeline:#{account.id}", @payload)
end
end
def remove_reblogs
@reblogs.each do |reblog|
RemoveStatusService.new.call(reblog)
end
end
def remove_from_hashtags
@account.featured_tags.where(tag_id: @status.tags.pluck(:id)).each do |featured_tag|
featured_tag.decrement(@status.id)
end
return unless @status.public_visibility?
@tags.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
def remove_from_public
return if @status.public_visibility?
redis.publish('timeline:public', @payload)
if @status.local?
redis.publish('timeline:public:local', @payload)
else
redis.publish('timeline:public:remote', @payload)
end
end
def remove_from_media
return if @status.public_visibility?
redis.publish('timeline:public:media', @payload)
if @status.local?
redis.publish('timeline:public:local:media', @payload)
else
redis.publish('timeline:public:remote:media', @payload)
end
end
def remove_from_direct
@mentions.each do |mention|
FeedManager.instance.unpush_from_direct(mention.account, @status) if mention.account.local?
end
end
def lock_options
{ redis: Redis.current, key: "distribute:#{@status.id}" }
end
end
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