forked from asonix/mastodon
Extract logic for determining ActivityPub inboxes to send deletes to to its own class and explicitly include the person the status replied to (even if not mentioned), people who favourited it, and people who replied to it (though that one is still not recursive)
173 lines
5.3 KiB
Ruby
173 lines
5.3 KiB
Ruby
# frozen_string_literal: true
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class RemoveStatusService < BaseService
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include Redisable
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include Payloadable
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# Delete a status
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# @param [Status] status
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# @param [Hash] options
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# @option [Boolean] :redraft
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# @option [Boolean] :immediate
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# @option [Boolean] :original_removed
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def call(status, **options)
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@payload = Oj.dump(event: :delete, payload: status.id.to_s)
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@status = status
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@account = status.account
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@options = options
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RedisLock.acquire(lock_options) do |lock|
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if lock.acquired?
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remove_from_self if @account.local?
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remove_from_followers
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remove_from_lists
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# There is no reason to send out Undo activities when the
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# cause is that the original object has been removed, since
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# original object being removed implicitly removes reblogs
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# of it. The Delete activity of the original is forwarded
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# separately.
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if @account.local? && !@options[:original_removed]
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remove_from_remote_followers
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remove_from_remote_reach
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end
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# Since reblogs don't mention anyone, don't get reblogged,
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# favourited and don't contain their own media attachments
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# or hashtags, this can be skipped
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unless @status.reblog?
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remove_from_mentions
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remove_reblogs
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remove_from_hashtags
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remove_from_public
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remove_from_media if @status.media_attachments.any?
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remove_from_spam_check
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remove_media
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end
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@status.destroy! if @options[:immediate] || !@status.reported?
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else
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raise Mastodon::RaceConditionError
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end
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end
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end
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private
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def remove_from_self
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FeedManager.instance.unpush_from_home(@account, @status)
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end
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def remove_from_followers
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@account.followers_for_local_distribution.reorder(nil).find_each do |follower|
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FeedManager.instance.unpush_from_home(follower, @status)
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end
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end
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def remove_from_lists
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@account.lists_for_local_distribution.select(:id, :account_id).reorder(nil).find_each do |list|
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FeedManager.instance.unpush_from_list(list, @status)
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end
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end
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def remove_from_mentions
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# For limited visibility statuses, the mentions that determine
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# who receives them in their home feed are a subset of followers
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# and therefore the delete is already handled by sending it to all
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# followers. Here we send a delete to actively mentioned accounts
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# that may not follow the account
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@status.active_mentions.find_each do |mention|
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redis.publish("timeline:#{mention.account_id}", @payload)
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end
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end
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def remove_from_remote_reach
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return if @status.reblog?
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# People who got mentioned in the status, or who
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# reblogged it from someone else might not follow
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# the author and wouldn't normally receive the
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# delete notification - so here, we explicitly
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# send it to them
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status_reach_finder = StatusReachFinder.new(@status)
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ActivityPub::DeliveryWorker.push_bulk(status_reach_finder.inboxes) do |inbox_url|
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[signed_activity_json, @account.id, inbox_url]
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end
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end
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def remove_from_remote_followers
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ActivityPub::DeliveryWorker.push_bulk(@account.followers.inboxes) do |inbox_url|
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[signed_activity_json, @account.id, inbox_url]
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end
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relay! if relayable?
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end
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def relayable?
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@status.public_visibility?
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end
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def relay!
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ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
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[signed_activity_json, @account.id, inbox_url]
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end
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end
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def signed_activity_json
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@signed_activity_json ||= Oj.dump(serialize_payload(@status, @status.reblog? ? ActivityPub::UndoAnnounceSerializer : ActivityPub::DeleteSerializer, signer: @account))
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end
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def remove_reblogs
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# We delete reblogs of the status before the original status,
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# because once original status is gone, reblogs will disappear
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# without us being able to do all the fancy stuff
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@status.reblogs.includes(:account).find_each do |reblog|
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RemoveStatusService.new.call(reblog, original_removed: true)
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end
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end
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def remove_from_hashtags
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@account.featured_tags.where(tag_id: @status.tags.map(&:id)).each do |featured_tag|
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featured_tag.decrement(@status.id)
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end
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return unless @status.public_visibility?
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@status.tags.map(&:name).each do |hashtag|
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redis.publish("timeline:hashtag:#{hashtag.mb_chars.downcase}", @payload)
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redis.publish("timeline:hashtag:#{hashtag.mb_chars.downcase}:local", @payload) if @status.local?
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end
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end
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def remove_from_public
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return unless @status.public_visibility?
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redis.publish('timeline:public', @payload)
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redis.publish(@status.local? ? 'timeline:public:local' : 'timeline:public:remote', @payload)
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end
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def remove_from_media
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return unless @status.public_visibility?
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redis.publish('timeline:public:media', @payload)
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redis.publish(@status.local? ? 'timeline:public:local:media' : 'timeline:public:remote:media', @payload)
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end
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def remove_media
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return if @options[:redraft] || (!@options[:immediate] && @status.reported?)
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@status.media_attachments.destroy_all
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end
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def remove_from_spam_check
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redis.zremrangebyscore("spam_check:#{@status.account_id}", @status.id, @status.id)
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end
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def lock_options
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{ redis: Redis.current, key: "distribute:#{@status.id}" }
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end
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end
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