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	diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
	index 45f0f4718..f31987a19 100644
	--- a/lib/pleroma/web/activity_pub/activity_pub.ex
	+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
	@@ -1,1479 +1,1480 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.ActivityPub.ActivityPub do
	alias Pleroma.Activity
	alias Pleroma.Activity.Ir.Topics
	alias Pleroma.Config
	alias Pleroma.Constants
	alias Pleroma.Conversation
	alias Pleroma.Conversation.Participation
	alias Pleroma.Notification
	alias Pleroma.Object
	alias Pleroma.Object.Containment
	alias Pleroma.Object.Fetcher
	alias Pleroma.Pagination
	alias Pleroma.Repo
	alias Pleroma.Upload
	alias Pleroma.User
	alias Pleroma.Web.ActivityPub.MRF
	alias Pleroma.Web.ActivityPub.Transmogrifier
	alias Pleroma.Web.ActivityPub.Utils
	alias Pleroma.Web.Streamer
	alias Pleroma.Web.WebFinger
	alias Pleroma.Workers.BackgroundWorker

	import Ecto.Query
	import Pleroma.Web.ActivityPub.Utils
	import Pleroma.Web.ActivityPub.Visibility

	require Logger
	require Pleroma.Constants

	# For Announce activities, we filter the recipients based on following status for any actors
	# that match actual users. See issue #164 for more information about why this is necessary.
	defp get_recipients(%{"type" => "Announce"} = data) do
	to = Map.get(data, "to", [])
	cc = Map.get(data, "cc", [])
	bcc = Map.get(data, "bcc", [])
	actor = User.get_cached_by_ap_id(data["actor"])

	recipients =
	Enum.filter(Enum.concat([to, cc, bcc]), fn recipient ->
	case User.get_cached_by_ap_id(recipient) do
	nil -> true
	user -> User.following?(user, actor)
	end
	end)

	{recipients, to, cc}
	end

	defp get_recipients(%{"type" => "Create"} = data) do
	to = Map.get(data, "to", [])
	cc = Map.get(data, "cc", [])
	bcc = Map.get(data, "bcc", [])
	actor = Map.get(data, "actor", [])
	recipients = [to, cc, bcc, [actor]] \|> Enum.concat() \|> Enum.uniq()
	{recipients, to, cc}
	end

	defp get_recipients(data) do
	to = Map.get(data, "to", [])
	cc = Map.get(data, "cc", [])
	bcc = Map.get(data, "bcc", [])
	recipients = Enum.concat([to, cc, bcc])
	{recipients, to, cc}
	end

	defp check_actor_is_active(actor) do
	if not is_nil(actor) do
	with user <- User.get_cached_by_ap_id(actor),
	false <- user.deactivated do
	true
	else
	_e -> false
	end
	else
	true
	end
	end

	defp check_remote_limit(%{"object" => %{"content" => content}}) when not is_nil(content) do
	limit = Config.get([:instance, :remote_limit])
	String.length(content) <= limit
	end

	defp check_remote_limit(_), do: true

	def increase_note_count_if_public(actor, object) do
	if is_public?(object), do: User.increase_note_count(actor), else: {:ok, actor}
	end

	def decrease_note_count_if_public(actor, object) do
	if is_public?(object), do: User.decrease_note_count(actor), else: {:ok, actor}
	end

	def increase_replies_count_if_reply(%{
	"object" => %{"inReplyTo" => reply_ap_id} = object,
	"type" => "Create"
	}) do
	if is_public?(object) do
	Object.increase_replies_count(reply_ap_id)
	end
	end

	def increase_replies_count_if_reply(_create_data), do: :noop

	def decrease_replies_count_if_reply(%Object{
	data: %{"inReplyTo" => reply_ap_id} = object
	}) do
	if is_public?(object) do
	Object.decrease_replies_count(reply_ap_id)
	end
	end

	def decrease_replies_count_if_reply(_object), do: :noop

	def increase_poll_votes_if_vote(%{
	"object" => %{"inReplyTo" => reply_ap_id, "name" => name},
	"type" => "Create"
	}) do
	Object.increase_vote_count(reply_ap_id, name)
	end

	def increase_poll_votes_if_vote(_create_data), do: :noop

	defp filter_followers_address(recipients) do
	Enum.filter(recipients, &String.ends_with?(&1, "/followers"))
	end

	@spec get_thread_recipients([String.t()], Activity.t() \| nil) :: [String.t()]
	def get_thread_recipients(recipients, in_reply_to \\ nil)

	- def get_thread_recipients(recipients, %Activity{thread_recipients: thread_recipients}) do
	+ def get_thread_recipients(recipients, %Activity{thread_recipients: thread_recipients})
	+ when is_list(thread_recipients) and length(thread_recipients) > 0 do
	public = Constants.as_public()

	parent_public? = public in thread_recipients
	current_public? = public in recipients

	cond do
	parent_public? and current_public? ->
	[public]

	parent_public? and not current_public? ->
	filter_followers_address(recipients)

	not parent_public? and current_public? ->
	thread_recipients

	not parent_public? and not current_public? ->
	[thread_recipients \| filter_followers_address(recipients)]
	\|> List.flatten()
	\|> Enum.uniq()
	end
	end

	def get_thread_recipients(recipients, _in_reply_to) do
	public = Constants.as_public()

	if public in recipients do
	[public]
	else
	filter_followers_address(recipients)
	end
	end

	def insert(map, local \\ true, fake \\ false, bypass_actor_check \\ false) when is_map(map) do
	{in_reply_to, map} = Map.pop(map, "in_reply_to")

	with nil <- Activity.normalize(map),
	map <- lazy_put_activity_defaults(map, fake),
	true <- bypass_actor_check \|\| check_actor_is_active(map["actor"]),
	{_, true} <- {:remote_limit_error, check_remote_limit(map)},
	{:ok, map} <- MRF.filter(map),
	{recipients, _, _} = get_recipients(map),
	thread_recipients <- get_thread_recipients(recipients, in_reply_to),
	{:fake, false, map, recipients} <- {:fake, fake, map, recipients},
	{:containment, :ok} <- {:containment, Containment.contain_child(map)},
	{:ok, map, object} <- insert_full_object(map) do
	{:ok, activity} =
	Repo.insert(%Activity{
	data: map,
	local: local,
	actor: map["actor"],
	recipients: recipients,
	thread_recipients: thread_recipients
	})

	# Splice in the child object if we have one.
	activity =
	if not is_nil(object) do
	Map.put(activity, :object, object)
	else
	activity
	end

	BackgroundWorker.enqueue("fetch_data_for_activity", %{"activity_id" => activity.id})

	Notification.create_notifications(activity)

	conversation = create_or_bump_conversation(activity, map["actor"])
	participations = get_participations(conversation)
	stream_out(activity)
	stream_out_participations(participations)
	{:ok, activity}
	else
	%Activity{} = activity ->
	{:ok, activity}

	{:fake, true, map, recipients} ->
	activity = %Activity{
	data: map,
	local: local,
	actor: map["actor"],
	recipients: recipients,
	id: "pleroma:fakeid"
	}

	Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
	{:ok, activity}

	error ->
	{:error, error}
	end
	end

	defp create_or_bump_conversation(activity, actor) do
	with {:ok, conversation} <- Conversation.create_or_bump_for(activity),
	%User{} = user <- User.get_cached_by_ap_id(actor),
	Participation.mark_as_read(user, conversation) do
	{:ok, conversation}
	end
	end

	defp get_participations({:ok, conversation}) do
	conversation
	\|> Repo.preload(:participations, force: true)
	\|> Map.get(:participations)
	end

	defp get_participations(_), do: []

	def stream_out_participations(participations) do
	participations =
	participations
	\|> Repo.preload(:user)

	Streamer.stream("participation", participations)
	end

	def stream_out_participations(%Object{data: %{"context" => context}}, user) do
	with %Conversation{} = conversation <- Conversation.get_for_ap_id(context),
	conversation = Repo.preload(conversation, :participations),
	last_activity_id =
	fetch_latest_activity_id_for_context(conversation.ap_id, %{
	"user" => user,
	"blocking_user" => user
	}) do
	if last_activity_id do
	stream_out_participations(conversation.participations)
	end
	end
	end

	def stream_out_participations(_, _), do: :noop

	def stream_out(%Activity{data: %{"type" => data_type}} = activity)
	when data_type in ["Create", "Announce", "Delete"] do
	activity
	\|> Topics.get_activity_topics()
	\|> Streamer.stream(activity)
	end

	def stream_out(_activity) do
	:noop
	end

	def create(%{to: to, actor: actor, context: context, object: object} = params, fake \\ false) do
	additional = params[:additional] \|\| %{}
	# only accept false as false value
	local = !(params[:local] == false)
	published = params[:published]
	quick_insert? = Pleroma.Config.get([:env]) == :benchmark

	with create_data <-
	make_create_data(
	%{
	to: to,
	actor: actor,
	published: published,
	context: context,
	object: object,
	in_reply_to: params[:in_reply_to]
	},
	additional
	),
	{:ok, activity} <- insert(create_data, local, fake),
	{:fake, false, activity} <- {:fake, fake, activity},
	_ <- increase_replies_count_if_reply(create_data),
	_ <- increase_poll_votes_if_vote(create_data),
	{:quick_insert, false, activity} <- {:quick_insert, quick_insert?, activity},
	{:ok, _actor} <- increase_note_count_if_public(actor, activity),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	else
	{:quick_insert, true, activity} ->
	{:ok, activity}

	{:fake, true, activity} ->
	{:ok, activity}

	{:error, message} ->
	{:error, message}
	end
	end

	def listen(%{to: to, actor: actor, context: context, object: object} = params) do
	additional = params[:additional] \|\| %{}
	# only accept false as false value
	local = !(params[:local] == false)
	published = params[:published]

	with listen_data <-
	make_listen_data(
	%{to: to, actor: actor, published: published, context: context, object: object},
	additional
	),
	{:ok, activity} <- insert(listen_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	else
	{:error, message} ->
	{:error, message}
	end
	end

	def accept(params) do
	accept_or_reject("Accept", params)
	end

	def reject(params) do
	accept_or_reject("Reject", params)
	end

	def accept_or_reject(type, %{to: to, actor: actor, object: object} = params) do
	local = Map.get(params, :local, true)
	activity_id = Map.get(params, :activity_id, nil)

	with data <-
	%{"to" => to, "type" => type, "actor" => actor.ap_id, "object" => object}
	\|> Utils.maybe_put("id", activity_id),
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
	local = !(params[:local] == false)
	activity_id = params[:activity_id]

	with data <- %{
	"to" => to,
	"cc" => cc,
	"type" => "Update",
	"actor" => actor,
	"object" => object
	},
	data <- Utils.maybe_put(data, "id", activity_id),
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def react_with_emoji(user, object, emoji, options \\ []) do
	with local <- Keyword.get(options, :local, true),
	activity_id <- Keyword.get(options, :activity_id, nil),
	Pleroma.Emoji.is_unicode_emoji?(emoji),
	reaction_data <- make_emoji_reaction_data(user, object, emoji, activity_id),
	{:ok, activity} <- insert(reaction_data, local),
	{:ok, object} <- add_emoji_reaction_to_object(activity, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity, object}
	end
	end

	def unreact_with_emoji(user, reaction_id, options \\ []) do
	with local <- Keyword.get(options, :local, true),
	activity_id <- Keyword.get(options, :activity_id, nil),
	user_ap_id <- user.ap_id,
	%Activity{actor: ^user_ap_id} = reaction_activity <- Activity.get_by_ap_id(reaction_id),
	object <- Object.normalize(reaction_activity),
	unreact_data <- make_undo_data(user, reaction_activity, activity_id),
	{:ok, activity} <- insert(unreact_data, local),
	{:ok, object} <- remove_emoji_reaction_from_object(reaction_activity, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity, object}
	end
	end

	# TODO: This is weird, maybe we shouldn't check here if we can make the activity.
	def like(
	%User{ap_id: ap_id} = user,
	%Object{data: %{"id" => _}} = object,
	activity_id \\ nil,
	local \\ true
	) do
	with nil <- get_existing_like(ap_id, object),
	like_data <- make_like_data(user, object, activity_id),
	{:ok, activity} <- insert(like_data, local),
	{:ok, object} <- add_like_to_object(activity, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity, object}
	else
	%Activity{} = activity -> {:ok, activity, object}
	error -> {:error, error}
	end
	end

	def unlike(%User{} = actor, %Object{} = object, activity_id \\ nil, local \\ true) do
	with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
	unlike_data <- make_unlike_data(actor, like_activity, activity_id),
	{:ok, unlike_activity} <- insert(unlike_data, local),
	{:ok, _activity} <- Repo.delete(like_activity),
	{:ok, object} <- remove_like_from_object(like_activity, object),
	:ok <- maybe_federate(unlike_activity) do
	{:ok, unlike_activity, like_activity, object}
	else
	_e -> {:ok, object}
	end
	end

	def announce(
	%User{ap_id: _} = user,
	%Object{data: %{"id" => _}} = object,
	activity_id \\ nil,
	local \\ true,
	public \\ true
	) do
	with true <- is_announceable?(object, user, public),
	announce_data <- make_announce_data(user, object, activity_id, public),
	{:ok, activity} <- insert(announce_data, local),
	{:ok, object} <- add_announce_to_object(activity, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity, object}
	else
	error -> {:error, error}
	end
	end

	def unannounce(
	%User{} = actor,
	%Object{} = object,
	activity_id \\ nil,
	local \\ true
	) do
	with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
	unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
	{:ok, unannounce_activity} <- insert(unannounce_data, local),
	:ok <- maybe_federate(unannounce_activity),
	{:ok, _activity} <- Repo.delete(announce_activity),
	{:ok, object} <- remove_announce_from_object(announce_activity, object) do
	{:ok, unannounce_activity, object}
	else
	_e -> {:ok, object}
	end
	end

	def follow(follower, followed, activity_id \\ nil, local \\ true) do
	with data <- make_follow_data(follower, followed, activity_id),
	{:ok, activity} <- insert(data, local),
	:ok <- maybe_federate(activity),
	_ <- User.set_follow_state_cache(follower.ap_id, followed.ap_id, activity.data["state"]) do
	{:ok, activity}
	end
	end

	def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
	with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
	{:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
	unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
	{:ok, activity} <- insert(unfollow_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	def delete(%User{ap_id: ap_id, follower_address: follower_address} = user) do
	with data <- %{
	"to" => [follower_address],
	"type" => "Delete",
	"actor" => ap_id,
	"object" => %{"type" => "Person", "id" => ap_id}
	},
	{:ok, activity} <- insert(data, true, true, true),
	:ok <- maybe_federate(activity) do
	{:ok, user}
	end
	end

	def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, options \\ []) do
	local = Keyword.get(options, :local, true)
	activity_id = Keyword.get(options, :activity_id, nil)
	actor = Keyword.get(options, :actor, actor)

	user = User.get_cached_by_ap_id(actor)
	to = (object.data["to"] \|\| []) ++ (object.data["cc"] \|\| [])

	with create_activity <- Activity.get_create_by_object_ap_id(id),
	data <-
	%{
	"type" => "Delete",
	"actor" => actor,
	"object" => id,
	"to" => to,
	"deleted_activity_id" => create_activity && create_activity.id
	}
	\|> maybe_put("id", activity_id),
	{:ok, activity} <- insert(data, local, false),
	{:ok, object, _create_activity} <- Object.delete(object),
	stream_out_participations(object, user),
	_ <- decrease_replies_count_if_reply(object),
	{:ok, _actor} <- decrease_note_count_if_public(user, object),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	@spec block(User.t(), User.t(), String.t() \| nil, boolean) :: {:ok, Activity.t() \| nil}
	def block(blocker, blocked, activity_id \\ nil, local \\ true) do
	outgoing_blocks = Config.get([:activitypub, :outgoing_blocks])
	unfollow_blocked = Config.get([:activitypub, :unfollow_blocked])

	if unfollow_blocked do
	follow_activity = fetch_latest_follow(blocker, blocked)
	if follow_activity, do: unfollow(blocker, blocked, nil, local)
	end

	with true <- outgoing_blocks,
	block_data <- make_block_data(blocker, blocked, activity_id),
	{:ok, activity} <- insert(block_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	else
	_e -> {:ok, nil}
	end
	end

	def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
	with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
	unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
	{:ok, activity} <- insert(unblock_data, local),
	:ok <- maybe_federate(activity) do
	{:ok, activity}
	end
	end

	@spec flag(map()) :: {:ok, Activity.t()} \| any
	def flag(
	%{
	actor: actor,
	context: _context,
	account: account,
	statuses: statuses,
	content: content
	} = params
	) do
	# only accept false as false value
	local = !(params[:local] == false)
	forward = !(params[:forward] == false)

	additional = params[:additional] \|\| %{}

	additional =
	if forward do
	Map.merge(additional, %{"to" => [], "cc" => [account.ap_id]})
	else
	Map.merge(additional, %{"to" => [], "cc" => []})
	end

	with flag_data <- make_flag_data(params, additional),
	{:ok, activity} <- insert(flag_data, local),
	{:ok, stripped_activity} <- strip_report_status_data(activity),
	:ok <- maybe_federate(stripped_activity) do
	Enum.each(User.all_superusers(), fn superuser ->
	superuser
	\|> Pleroma.Emails.AdminEmail.report(actor, account, statuses, content)
	\|> Pleroma.Emails.Mailer.deliver_async()
	end)

	{:ok, activity}
	end
	end

	def move(%User{} = origin, %User{} = target, local \\ true) do
	params = %{
	"type" => "Move",
	"actor" => origin.ap_id,
	"object" => origin.ap_id,
	"target" => target.ap_id
	}

	with true <- origin.ap_id in target.also_known_as,
	{:ok, activity} <- insert(params, local) do
	maybe_federate(activity)

	BackgroundWorker.enqueue("move_following", %{
	"origin_id" => origin.id,
	"target_id" => target.id
	})

	{:ok, activity}
	else
	false -> {:error, "Target account must have the origin in `alsoKnownAs`"}
	err -> err
	end
	end

	defp fetch_activities_for_context_query(context, opts) do
	public = [Pleroma.Constants.as_public()]

	recipients =
	if opts["user"],
	do: [opts["user"].ap_id \| User.following(opts["user"])] ++ public,
	else: public

	from(activity in Activity)
	\|> maybe_preload_objects(opts)
	\|> maybe_preload_bookmarks(opts)
	\|> maybe_set_thread_muted_field(opts)
	\|> restrict_blocked(opts)
	\|> restrict_recipients(recipients, opts["user"])
	\|> where(
	[activity],
	fragment(
	"?->>'type' = ? and ?->>'context' = ?",
	activity.data,
	"Create",
	activity.data,
	^context
	)
	)
	\|> exclude_poll_votes(opts)
	\|> exclude_id(opts)
	\|> order_by([activity], desc: activity.id)
	end

	@spec fetch_activities_for_context(String.t(), keyword() \| map()) :: [Activity.t()]
	def fetch_activities_for_context(context, opts \\ %{}) do
	context
	\|> fetch_activities_for_context_query(opts)
	\|> Repo.all()
	end

	@spec fetch_latest_activity_id_for_context(String.t(), keyword() \| map()) ::
	FlakeId.Ecto.CompatType.t() \| nil
	def fetch_latest_activity_id_for_context(context, opts \\ %{}) do
	context
	\|> fetch_activities_for_context_query(Map.merge(%{"skip_preload" => true}, opts))
	\|> limit(1)
	\|> select([a], a.id)
	\|> Repo.one()
	end

	def fetch_public_activities(opts \\ %{}, pagination \\ :keyset) do
	opts =
	opts
	\|> Map.put("for_user", opts["user"])
	\|> Map.delete("user")

	[Pleroma.Constants.as_public()]
	\|> fetch_activities_query(opts)
	\|> restrict_unlisted()
	\|> Pagination.fetch_paginated(opts, pagination)
	end

	@valid_visibilities ~w[direct unlisted public private]

	defp restrict_visibility(query, %{visibility: visibility})
	when is_list(visibility) do
	if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
	query =
	from(
	a in query,
	where:
	fragment(
	"activity_visibility(?, ?, ?) = ANY (?)",
	a.actor,
	a.recipients,
	a.data,
	^visibility
	)
	)

	query
	else
	Logger.error("Could not restrict visibility to #{visibility}")
	end
	end

	defp restrict_visibility(query, %{visibility: visibility})
	when visibility in @valid_visibilities do
	from(
	a in query,
	where:
	fragment("activity_visibility(?, ?, ?) = ?", a.actor, a.recipients, a.data, ^visibility)
	)
	end

	defp restrict_visibility(_query, %{visibility: visibility})
	when visibility not in @valid_visibilities do
	Logger.error("Could not restrict visibility to #{visibility}")
	end

	defp restrict_visibility(query, _visibility), do: query

	defp exclude_visibility(query, %{"exclude_visibilities" => visibility})
	when is_list(visibility) do
	if Enum.all?(visibility, &(&1 in @valid_visibilities)) do
	from(
	a in query,
	where:
	not fragment(
	"activity_visibility(?, ?, ?) = ANY (?)",
	a.actor,
	a.recipients,
	a.data,
	^visibility
	)
	)
	else
	Logger.error("Could not exclude visibility to #{visibility}")
	query
	end
	end

	defp exclude_visibility(query, %{"exclude_visibilities" => visibility})
	when visibility in @valid_visibilities do
	from(
	a in query,
	where:
	not fragment(
	"activity_visibility(?, ?, ?) = ?",
	a.actor,
	a.recipients,
	a.data,
	^visibility
	)
	)
	end

	defp exclude_visibility(query, %{"exclude_visibilities" => visibility})
	when visibility not in @valid_visibilities do
	Logger.error("Could not exclude visibility to #{visibility}")
	query
	end

	defp exclude_visibility(query, _visibility), do: query

	def fetch_user_abstract_activities(user, reading_user, params \\ %{}) do
	params =
	params
	\|> Map.put("user", reading_user)
	\|> Map.put("actor_id", user.ap_id)
	\|> Map.put("whole_db", true)

	recipients =
	user_activities_recipients(%{
	"godmode" => params["godmode"],
	"reading_user" => reading_user
	})

	fetch_activities(recipients, params)
	\|> Enum.reverse()
	end

	def fetch_user_activities(user, reading_user, params \\ %{}) do
	params =
	params
	\|> Map.put("type", ["Create", "Announce"])
	\|> Map.put("user", reading_user)
	\|> Map.put("actor_id", user.ap_id)
	\|> Map.put("whole_db", true)
	\|> Map.put("pinned_activity_ids", user.pinned_activities)

	params =
	if User.blocks?(reading_user, user) do
	params
	else
	params
	\|> Map.put("blocking_user", reading_user)
	\|> Map.put("muting_user", reading_user)
	end

	recipients =
	user_activities_recipients(%{
	"godmode" => params["godmode"],
	"reading_user" => reading_user
	})

	fetch_activities(recipients, params)
	\|> Enum.reverse()
	end

	def fetch_instance_activities(params) do
	params =
	params
	\|> Map.put("type", ["Create", "Announce"])
	\|> Map.put("instance", params["instance"])
	\|> Map.put("whole_db", true)

	fetch_activities([Pleroma.Constants.as_public()], params, :offset)
	\|> Enum.reverse()
	end

	defp user_activities_recipients(%{"godmode" => true}) do
	[]
	end

	defp user_activities_recipients(%{"reading_user" => reading_user}) do
	if reading_user do
	[Pleroma.Constants.as_public()] ++ [reading_user.ap_id \| User.following(reading_user)]
	else
	[Pleroma.Constants.as_public()]
	end
	end

	defp restrict_since(query, %{"since_id" => ""}), do: query

	defp restrict_since(query, %{"since_id" => since_id}) do
	from(activity in query, where: activity.id > ^since_id)
	end

	defp restrict_since(query, _), do: query

	defp restrict_tag_reject(_query, %{"tag_reject" => _tag_reject, "skip_preload" => true}) do
	raise "Can't use the child object without preloading!"
	end

	defp restrict_tag_reject(query, %{"tag_reject" => tag_reject})
	when is_list(tag_reject) and tag_reject != [] do
	from(
	[_activity, object] in query,
	where: fragment("not (?)->'tag' \\?\| (?)", object.data, ^tag_reject)
	)
	end

	defp restrict_tag_reject(query, _), do: query

	defp restrict_tag_all(_query, %{"tag_all" => _tag_all, "skip_preload" => true}) do
	raise "Can't use the child object without preloading!"
	end

	defp restrict_tag_all(query, %{"tag_all" => tag_all})
	when is_list(tag_all) and tag_all != [] do
	from(
	[_activity, object] in query,
	where: fragment("(?)->'tag' \\?& (?)", object.data, ^tag_all)
	)
	end

	defp restrict_tag_all(query, _), do: query

	defp restrict_tag(_query, %{"tag" => _tag, "skip_preload" => true}) do
	raise "Can't use the child object without preloading!"
	end

	defp restrict_tag(query, %{"tag" => tag}) when is_list(tag) do
	from(
	[_activity, object] in query,
	where: fragment("(?)->'tag' \\?\| (?)", object.data, ^tag)
	)
	end

	defp restrict_tag(query, %{"tag" => tag}) when is_binary(tag) do
	from(
	[_activity, object] in query,
	where: fragment("(?)->'tag' \\? (?)", object.data, ^tag)
	)
	end

	defp restrict_tag(query, _), do: query

	defp query_for_thread_recipients(query, recipients, user) do
	public = [Constants.as_public()]
	user_mention = [user.ap_id]
	user_following = User.get_cached_following(user)

	from(
	activity in query,
	where:
	fragment(
	"? && ? AND (? && ? OR ? && ? OR ? @> ?)",
	^recipients,
	activity.recipients,
	^user_mention,
	activity.recipients,
	^public,
	activity.thread_recipients,
	^user_following,
	activity.thread_recipients
	)
	)
	end

	defp restrict_recipients(query, [], _user), do: query

	defp restrict_recipients(query, recipients, %{
	"user" => nil,
	"for_user" => %{skip_thread_containment: false} = user
	})
	when not is_nil(user) do
	query_for_thread_recipients(query, recipients, user)
	end

	defp restrict_recipients(query, recipients, %{
	"user" => %{skip_thread_containment: false} = user
	})
	when not is_nil(user) do
	query_for_thread_recipients(query, recipients, user)
	end

	defp restrict_recipients(query, recipients, %{"user" => user}) when not is_nil(user) do
	from(
	activity in query,
	where: fragment("? && ?", ^recipients, activity.recipients),
	or_where: activity.actor == ^user.ap_id
	)
	end

	defp restrict_recipients(query, recipients, _) do
	from(activity in query, where: fragment("? && ?", ^recipients, activity.recipients))
	end

	defp restrict_local(query, %{"local_only" => true}) do
	from(activity in query, where: activity.local == true)
	end

	defp restrict_local(query, _), do: query

	defp restrict_actor(query, %{"actor_id" => actor_id}) do
	from(activity in query, where: activity.actor == ^actor_id)
	end

	defp restrict_actor(query, _), do: query

	defp restrict_type(query, %{"type" => type}) when is_binary(type) do
	from(activity in query, where: fragment("?->>'type' = ?", activity.data, ^type))
	end

	defp restrict_type(query, %{"type" => type}) do
	from(activity in query, where: fragment("?->>'type' = ANY(?)", activity.data, ^type))
	end

	defp restrict_type(query, _), do: query

	defp restrict_state(query, %{"state" => state}) do
	from(activity in query, where: fragment("?->>'state' = ?", activity.data, ^state))
	end

	defp restrict_state(query, _), do: query

	defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
	from(
	[_activity, object] in query,
	where: fragment("(?)->'likes' \\? (?)", object.data, ^ap_id)
	)
	end

	defp restrict_favorited_by(query, _), do: query

	defp restrict_media(_query, %{"only_media" => _val, "skip_preload" => true}) do
	raise "Can't use the child object without preloading!"
	end

	defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
	from(
	[_activity, object] in query,
	where: fragment("not (?)->'attachment' = (?)", object.data, ^[])
	)
	end

	defp restrict_media(query, _), do: query

	defp restrict_replies(query, %{"exclude_replies" => val}) when val == "true" or val == "1" do
	from(
	[_activity, object] in query,
	where: fragment("?->>'inReplyTo' is null", object.data)
	)
	end

	defp restrict_replies(query, _), do: query

	defp restrict_reblogs(query, %{"exclude_reblogs" => val}) when val == "true" or val == "1" do
	from(activity in query, where: fragment("?->>'type' != 'Announce'", activity.data))
	end

	defp restrict_reblogs(query, _), do: query

	defp restrict_muted(query, %{"with_muted" => val}) when val in [true, "true", "1"], do: query

	defp restrict_muted(query, %{"muting_user" => %User{} = user} = opts) do
	mutes = opts["muted_users_ap_ids"] \|\| User.muted_users_ap_ids(user)

	query =
	from([activity] in query,
	where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
	where: fragment("not (?->'to' \\?\| ?)", activity.data, ^mutes)
	)

	unless opts["skip_preload"] do
	from([thread_mute: tm] in query, where: is_nil(tm.user_id))
	else
	query
	end
	end

	defp restrict_muted(query, _), do: query

	defp restrict_blocked(query, %{"blocking_user" => %User{} = user} = opts) do
	blocked_ap_ids = opts["blocked_users_ap_ids"] \|\| User.blocked_users_ap_ids(user)
	domain_blocks = user.domain_blocks \|\| []

	following_ap_ids = User.get_friends_ap_ids(user)

	query =
	if has_named_binding?(query, :object), do: query, else: Activity.with_joined_object(query)

	from(
	[activity, object: o] in query,
	where: fragment("not (? = ANY(?))", activity.actor, ^blocked_ap_ids),
	where: fragment("not (? && ?)", activity.recipients, ^blocked_ap_ids),
	where:
	fragment(
	"not (?->>'type' = 'Announce' and ?->'to' \\?\| ?)",
	activity.data,
	activity.data,
	^blocked_ap_ids
	),
	where:
	fragment(
	"(not (split_part(?, '/', 3) = ANY(?))) or ? = ANY(?)",
	activity.actor,
	^domain_blocks,
	activity.actor,
	^following_ap_ids
	),
	where:
	fragment(
	"(not (split_part(?->>'actor', '/', 3) = ANY(?))) or (?->>'actor') = ANY(?)",
	o.data,
	^domain_blocks,
	o.data,
	^following_ap_ids
	)
	)
	end

	defp restrict_blocked(query, _), do: query

	defp restrict_unlisted(query) do
	from(
	activity in query,
	where:
	fragment(
	"not (coalesce(?->'cc', '{}'::jsonb) \\?\| ?)",
	activity.data,
	^[Pleroma.Constants.as_public()]
	)
	)
	end

	defp restrict_pinned(query, %{"pinned" => "true", "pinned_activity_ids" => ids}) do
	from(activity in query, where: activity.id in ^ids)
	end

	defp restrict_pinned(query, _), do: query

	defp restrict_muted_reblogs(query, %{"muting_user" => %User{} = user} = opts) do
	muted_reblogs = opts["reblog_muted_users_ap_ids"] \|\| User.reblog_muted_users_ap_ids(user)

	from(
	activity in query,
	where:
	fragment(
	"not ( ?->>'type' = 'Announce' and ? = ANY(?))",
	activity.data,
	activity.actor,
	^muted_reblogs
	)
	)
	end

	defp restrict_muted_reblogs(query, _), do: query

	defp restrict_instance(query, %{"instance" => instance}) do
	users =
	from(
	u in User,
	select: u.ap_id,
	where: fragment("? LIKE ?", u.nickname, ^"%@#{instance}")
	)
	\|> Repo.all()

	from(activity in query, where: activity.actor in ^users)
	end

	defp restrict_instance(query, _), do: query

	defp exclude_poll_votes(query, %{"include_poll_votes" => true}), do: query

	defp exclude_poll_votes(query, _) do
	if has_named_binding?(query, :object) do
	from([activity, object: o] in query,
	where: fragment("not(?->>'type' = ?)", o.data, "Answer")
	)
	else
	query
	end
	end

	defp exclude_id(query, %{"exclude_id" => id}) when is_binary(id) do
	from(activity in query, where: activity.id != ^id)
	end

	defp exclude_id(query, _), do: query

	defp maybe_preload_objects(query, %{"skip_preload" => true}), do: query

	defp maybe_preload_objects(query, _) do
	query
	\|> Activity.with_preloaded_object()
	end

	defp maybe_preload_bookmarks(query, %{"skip_preload" => true}), do: query

	defp maybe_preload_bookmarks(query, opts) do
	query
	\|> Activity.with_preloaded_bookmark(opts["user"])
	end

	defp maybe_preload_report_notes(query, %{"preload_report_notes" => true}) do
	query
	\|> Activity.with_preloaded_report_notes()
	end

	defp maybe_preload_report_notes(query, _), do: query

	defp maybe_set_thread_muted_field(query, %{"skip_preload" => true}), do: query

	defp maybe_set_thread_muted_field(query, opts) do
	query
	\|> Activity.with_set_thread_muted_field(opts["muting_user"] \|\| opts["user"])
	end

	defp maybe_order(query, %{order: :desc}) do
	query
	\|> order_by(desc: :id)
	end

	defp maybe_order(query, %{order: :asc}) do
	query
	\|> order_by(asc: :id)
	end

	defp maybe_order(query, _), do: query

	defp fetch_activities_query_ap_ids_ops(opts) do
	source_user = opts["muting_user"]
	ap_id_relations = if source_user, do: [:mute, :reblog_mute], else: []

	ap_id_relations =
	ap_id_relations ++
	if opts["blocking_user"] && opts["blocking_user"] == source_user do
	[:block]
	else
	[]
	end

	preloaded_ap_ids = User.outgoing_relations_ap_ids(source_user, ap_id_relations)

	restrict_blocked_opts = Map.merge(%{"blocked_users_ap_ids" => preloaded_ap_ids[:block]}, opts)
	restrict_muted_opts = Map.merge(%{"muted_users_ap_ids" => preloaded_ap_ids[:mute]}, opts)

	restrict_muted_reblogs_opts =
	Map.merge(%{"reblog_muted_users_ap_ids" => preloaded_ap_ids[:reblog_mute]}, opts)

	{restrict_blocked_opts, restrict_muted_opts, restrict_muted_reblogs_opts}
	end

	def fetch_activities_query(recipients, opts \\ %{}) do
	{restrict_blocked_opts, restrict_muted_opts, restrict_muted_reblogs_opts} =
	fetch_activities_query_ap_ids_ops(opts)

	opts = Map.put(opts, "user", opts["user"])

	Activity
	\|> maybe_preload_objects(opts)
	\|> maybe_preload_bookmarks(opts)
	\|> maybe_preload_report_notes(opts)
	\|> maybe_set_thread_muted_field(opts)
	\|> maybe_order(opts)
	\|> restrict_recipients(recipients, opts)
	\|> restrict_tag(opts)
	\|> restrict_tag_reject(opts)
	\|> restrict_tag_all(opts)
	\|> restrict_since(opts)
	\|> restrict_local(opts)
	\|> restrict_actor(opts)
	\|> restrict_type(opts)
	\|> restrict_state(opts)
	\|> restrict_favorited_by(opts)
	\|> restrict_blocked(restrict_blocked_opts)
	\|> restrict_muted(restrict_muted_opts)
	\|> restrict_media(opts)
	\|> restrict_visibility(opts)
	\|> restrict_replies(opts)
	\|> restrict_reblogs(opts)
	\|> restrict_pinned(opts)
	\|> restrict_muted_reblogs(restrict_muted_reblogs_opts)
	\|> restrict_instance(opts)
	\|> Activity.restrict_deactivated_users()
	\|> exclude_poll_votes(opts)
	\|> exclude_visibility(opts)
	end

	def fetch_activities(recipients, opts \\ %{}, pagination \\ :keyset) do
	list_memberships = Pleroma.List.memberships(opts["user"])

	fetch_activities_query(recipients ++ list_memberships, opts)
	\|> Pagination.fetch_paginated(opts, pagination)
	\|> Enum.reverse()
	\|> maybe_update_cc(list_memberships, opts["user"])
	end

	@doc """
	Fetch favorites activities of user with order by sort adds to favorites
	"""
	@spec fetch_favourites(User.t(), map(), atom()) :: list(Activity.t())
	def fetch_favourites(user, params \\ %{}, pagination \\ :keyset) do
	user.ap_id
	\|> Activity.Queries.by_actor()
	\|> Activity.Queries.by_type("Like")
	\|> Activity.with_joined_object()
	\|> Object.with_joined_activity()
	\|> select([_like, object, activity], %{activity \| object: object})
	\|> order_by([like, _, _], desc: like.id)
	\|> Pagination.fetch_paginated(
	Map.merge(params, %{"skip_order" => true}),
	pagination,
	:object_activity
	)
	end

	defp maybe_update_cc(activities, list_memberships, %User{ap_id: user_ap_id})
	when is_list(list_memberships) and length(list_memberships) > 0 do
	Enum.map(activities, fn
	%{data: %{"bcc" => bcc}} = activity when is_list(bcc) and length(bcc) > 0 ->
	if Enum.any?(bcc, &(&1 in list_memberships)) do
	update_in(activity.data["cc"], &[user_ap_id \| &1])
	else
	activity
	end

	activity ->
	activity
	end)
	end

	defp maybe_update_cc(activities, _, _), do: activities

	def fetch_activities_bounded_query(query, recipients, recipients_with_public) do
	from(activity in query,
	where:
	fragment("? && ?", activity.recipients, ^recipients) or
	(fragment("? && ?", activity.recipients, ^recipients_with_public) and
	^Pleroma.Constants.as_public() in activity.recipients)
	)
	end

	def fetch_activities_bounded(
	recipients,
	recipients_with_public,
	opts \\ %{},
	pagination \\ :keyset
	) do
	fetch_activities_query([], opts)
	\|> fetch_activities_bounded_query(recipients, recipients_with_public)
	\|> Pagination.fetch_paginated(opts, pagination)
	\|> Enum.reverse()
	end

	def upload(file, opts \\ []) do
	with {:ok, data} <- Upload.store(file, opts) do
	obj_data =
	if opts[:actor] do
	Map.put(data, "actor", opts[:actor])
	else
	data
	end

	Repo.insert(%Object{data: obj_data})
	end
	end

	defp object_to_user_data(data) do
	avatar =
	data["icon"]["url"] &&
	%{
	"type" => "Image",
	"url" => [%{"href" => data["icon"]["url"]}]
	}

	banner =
	data["image"]["url"] &&
	%{
	"type" => "Image",
	"url" => [%{"href" => data["image"]["url"]}]
	}

	fields =
	data
	\|> Map.get("attachment", [])
	\|> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
	\|> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)

	locked = data["manuallyApprovesFollowers"] \|\| false
	data = Transmogrifier.maybe_fix_user_object(data)
	discoverable = data["discoverable"] \|\| false
	invisible = data["invisible"] \|\| false
	actor_type = data["type"] \|\| "Person"

	user_data = %{
	ap_id: data["id"],
	ap_enabled: true,
	source_data: data,
	banner: banner,
	fields: fields,
	locked: locked,
	discoverable: discoverable,
	invisible: invisible,
	avatar: avatar,
	name: data["name"],
	follower_address: data["followers"],
	following_address: data["following"],
	bio: data["summary"],
	actor_type: actor_type,
	also_known_as: Map.get(data, "alsoKnownAs", [])
	}

	# nickname can be nil because of virtual actors
	user_data =
	if data["preferredUsername"] do
	Map.put(
	user_data,
	:nickname,
	"#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}"
	)
	else
	Map.put(user_data, :nickname, nil)
	end

	{:ok, user_data}
	end

	def fetch_follow_information_for_user(user) do
	with {:ok, following_data} <-
	Fetcher.fetch_and_contain_remote_object_from_id(user.following_address),
	{:ok, hide_follows} <- collection_private(following_data),
	{:ok, followers_data} <-
	Fetcher.fetch_and_contain_remote_object_from_id(user.follower_address),
	{:ok, hide_followers} <- collection_private(followers_data) do
	{:ok,
	%{
	hide_follows: hide_follows,
	follower_count: normalize_counter(followers_data["totalItems"]),
	following_count: normalize_counter(following_data["totalItems"]),
	hide_followers: hide_followers
	}}
	else
	{:error, _} = e -> e
	e -> {:error, e}
	end
	end

	defp normalize_counter(counter) when is_integer(counter), do: counter
	defp normalize_counter(_), do: 0

	defp maybe_update_follow_information(data) do
	with {:enabled, true} <-
	{:enabled, Pleroma.Config.get([:instance, :external_user_synchronization])},
	{:ok, info} <- fetch_follow_information_for_user(data) do
	info = Map.merge(data[:info] \|\| %{}, info)
	Map.put(data, :info, info)
	else
	{:enabled, false} ->
	data

	e ->
	Logger.error(
	"Follower/Following counter update for #{data.ap_id} failed.\n" <> inspect(e)
	)

	data
	end
	end

	defp collection_private(%{"first" => %{"type" => type}})
	when type in ["CollectionPage", "OrderedCollectionPage"],
	do: {:ok, false}

	defp collection_private(%{"first" => first}) do
	with {:ok, %{"type" => type}} when type in ["CollectionPage", "OrderedCollectionPage"] <-
	Fetcher.fetch_and_contain_remote_object_from_id(first) do
	{:ok, false}
	else
	{:error, {:ok, %{status: code}}} when code in [401, 403] -> {:ok, true}
	{:error, _} = e -> e
	e -> {:error, e}
	end
	end

	defp collection_private(_data), do: {:ok, true}

	def user_data_from_user_object(data) do
	with {:ok, data} <- MRF.filter(data),
	{:ok, data} <- object_to_user_data(data) do
	{:ok, data}
	else
	e -> {:error, e}
	end
	end

	def fetch_and_prepare_user_from_ap_id(ap_id) do
	with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id),
	{:ok, data} <- user_data_from_user_object(data),
	data <- maybe_update_follow_information(data) do
	{:ok, data}
	else
	e ->
	Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
	{:error, e}
	end
	end

	def make_user_from_ap_id(ap_id) do
	if _user = User.get_cached_by_ap_id(ap_id) do
	Transmogrifier.upgrade_user_from_ap_id(ap_id)
	else
	with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
	User.insert_or_update_user(data)
	else
	e -> {:error, e}
	end
	end
	end

	def make_user_from_nickname(nickname) do
	with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
	make_user_from_ap_id(ap_id)
	else
	_e -> {:error, "No AP id in WebFinger"}
	end
	end

	# do post-processing on a specific activity
	def contain_activity(%Activity{} = activity, %User{} = user) do
	entire_thread_visible_for_user?(activity, user)
	end

	def fetch_direct_messages_query do
	Activity
	\|> restrict_type(%{"type" => "Create"})
	\|> restrict_visibility(%{visibility: "direct"})
	\|> order_by([activity], asc: activity.id)
	end
	end
	diff --git a/test/web/activity_pub/thread_visibility_test.exs b/test/web/activity_pub/thread_visibility_test.exs
	index fe57158a8..916b9a6b6 100644
	--- a/test/web/activity_pub/thread_visibility_test.exs
	+++ b/test/web/activity_pub/thread_visibility_test.exs
	@@ -1,871 +1,921 @@
	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-onl

	defmodule Pleroma.Web.ActivityPub.ThreadVisibilityTest do
	use Pleroma.DataCase

	import Pleroma.Factory

	alias Pleroma.Constants
	alias Pleroma.User
	alias Pleroma.Web.ActivityPub.ActivityPub
	alias Pleroma.Web.CommonAPI

	require Pleroma.Constants

	describe "public root post" do
	setup do
	[u1, u2, u3, u4] = prepare_users()
	a = create_activity(u1)

	private_replies = create_thread(u1, u2, a, "private")
	public_replies = create_thread(u1, u4, a)

	{:ok,
	users: %{u1: u1, u2: u2, u3: u3, u4: u4},
	a: a,
	private: private_replies,
	public: public_replies}
	end

	test "thread_contaiment is off", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	Map.put(users[:u1], :skip_thread_containment, true),
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u2], :skip_thread_containment, true),
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u3], :skip_thread_containment, true),
	[private[:r1], private[:r3]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u4], :skip_thread_containment, true),
	Map.values(public) ++ [a, private[:r2]],
	Map.values(public) ++ [a]
	)
	end

	test "thread_contaiment is on", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	users[:u1],
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u2],
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u3],
	[private[:r1]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u4],
	Map.values(public) ++ [a],
	Map.values(public) ++ [a]
	)
	end
	end

	describe "private root post" do
	setup do
	[u1, u2, u3, u4] = prepare_users()
	a = create_activity(u1, "private")

	private_replies = create_thread(u1, u2, a, "private")
	public_replies = create_thread(u1, u4, a)

	{:ok,
	users: %{u1: u1, u2: u2, u3: u3, u4: u4},
	a: a,
	private: private_replies,
	public: public_replies}
	end

	test "thread_contaiment is off", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	Map.put(users[:u1], :skip_thread_containment, true),
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public)
	)

	assert_timelines(
	Map.put(users[:u2], :skip_thread_containment, true),
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public)
	)

	assert_timelines(
	Map.put(users[:u3], :skip_thread_containment, true),
	[private[:r1], private[:r3]],
	Map.values(public)
	)

	assert_timelines(
	Map.put(users[:u4], :skip_thread_containment, true),
	Map.values(public) ++ [a, private[:r2]],
	Map.values(public)
	)
	end

	test "thread_contaiment is on", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	users[:u1],
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public)
	)

	assert_timelines(
	users[:u2],
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public)
	)

	assert_timelines(
	users[:u3],
	[],
	Map.values(public)
	)

	assert_timelines(
	users[:u4],
	Map.values(public) ++ [a],
	Map.values(public)
	)
	end
	end

	describe "unlisted root post" do
	setup do
	[u1, u2, u3, u4] = prepare_users()
	a = create_activity(u1, "unlisted")

	private_replies = create_thread(u1, u2, a, "private")
	public_replies = create_thread(u1, u4, a)

	{:ok,
	users: %{u1: u1, u2: u2, u3: u3, u4: u4},
	a: a,
	private: private_replies,
	public: public_replies}
	end

	test "thread_contaiment is off", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	Map.put(users[:u1], :skip_thread_containment, true),
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public)
	)

	assert_timelines(
	Map.put(users[:u2], :skip_thread_containment, true),
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public)
	)

	assert_timelines(
	Map.put(users[:u3], :skip_thread_containment, true),
	[private[:r1], private[:r3]],
	Map.values(public)
	)

	assert_timelines(
	Map.put(users[:u4], :skip_thread_containment, true),
	Map.values(public) ++ [a, private[:r2]],
	Map.values(public)
	)
	end

	test "thread_contaiment is on", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	users[:u1],
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public)
	)

	assert_timelines(
	users[:u2],
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public)
	)

	assert_timelines(
	users[:u3],
	[private[:r1]],
	Map.values(public)
	)

	assert_timelines(
	users[:u4],
	Map.values(public) ++ [a],
	Map.values(public)
	)
	end
	end

	describe "direct root post" do
	setup do
	[u1, u2, u3, u4] = prepare_users()
	a = create_activity(u1, "direct", u2)

	private_replies = create_thread(u1, u2, a, "direct")

	{:ok, users: %{u1: u1, u2: u2, u3: u3, u4: u4}, a: a, private: private_replies}
	end

	test "thread_contaiment is off", %{
	users: users,
	a: a,
	private: private
	} do
	assert_timelines(
	Map.put(users[:u1], :skip_thread_containment, true),
	Map.values(private) ++ [a],
	[],
	Map.values(private) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u2], :skip_thread_containment, true),
	Map.values(private) ++ [a],
	[],
	Map.values(private) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u3], :skip_thread_containment, true),
	[],
	[]
	)

	assert_timelines(
	Map.put(users[:u4], :skip_thread_containment, true),
	[],
	[]
	)
	end

	test "thread_contaiment is on", %{
	users: users,
	a: a,
	private: private
	} do
	assert_timelines(
	users[:u1],
	Map.values(private) ++ [a],
	[],
	Map.values(private) ++ [a]
	)

	assert_timelines(
	users[:u2],
	Map.values(private) ++ [a],
	[],
	Map.values(private) ++ [a]
	)

	assert_timelines(
	users[:u3],
	[],
	[]
	)

	assert_timelines(
	users[:u4],
	[],
	[]
	)
	end
	end

	describe "public root post and unlisted thread" do
	setup do
	[u1, u2, u3, u4] = prepare_users()
	a = create_activity(u1)

	private_replies = create_thread(u1, u2, a, "unlisted")
	public_replies = create_thread(u1, u4, a)

	{:ok,
	users: %{u1: u1, u2: u2, u3: u3, u4: u4},
	a: a,
	private: private_replies,
	public: public_replies}
	end

	test "thread_contaiment is off", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	Map.put(users[:u1], :skip_thread_containment, true),
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u2], :skip_thread_containment, true),
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u3], :skip_thread_containment, true),
	[private[:r1], private[:r3]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u4], :skip_thread_containment, true),
	Map.values(public) ++ [a, private[:r2]],
	Map.values(public) ++ [a]
	)
	end

	test "thread_contaiment is on", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	users[:u1],
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u2],
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u3],
	[private[:r1], private[:r3]],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u4],
	Map.values(public) ++ [a, private[:r2]],
	Map.values(public) ++ [a]
	)
	end
	end

	describe "public root post and direct thread" do
	setup do
	[u1, u2, u3, u4] = prepare_users()
	a = create_activity(u1)

	private_replies = create_thread(u1, u2, a, "direct")
	public_replies = create_thread(u1, u4, a)

	{:ok,
	users: %{u1: u1, u2: u2, u3: u3, u4: u4},
	a: a,
	private: private_replies,
	public: public_replies}
	end

	test "thread_contaiment is off", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	Map.put(users[:u1], :skip_thread_containment, true),
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public) ++ [a],
	Map.values(private)
	)

	assert_timelines(
	Map.put(users[:u2], :skip_thread_containment, true),
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public) ++ [a],
	Map.values(private)
	)

	assert_timelines(
	Map.put(users[:u3], :skip_thread_containment, true),
	[],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	Map.put(users[:u4], :skip_thread_containment, true),
	Map.values(public) ++ [a],
	Map.values(public) ++ [a]
	)
	end

	test "thread_contaiment is on", %{
	users: users,
	a: a,
	private: private,
	public: public
	} do
	assert_timelines(
	users[:u1],
	Map.values(public) ++ Map.values(private) ++ [a],
	Map.values(public) ++ [a],
	Map.values(private)
	)

	assert_timelines(
	users[:u2],
	Map.values(private) ++ [a, public[:r2]],
	Map.values(public) ++ [a],
	Map.values(private)
	)

	assert_timelines(
	users[:u3],
	[],
	Map.values(public) ++ [a]
	)

	assert_timelines(
	users[:u4],
	Map.values(public) ++ [a],
	Map.values(public) ++ [a]
	)
	end
	end

	defp create_activity(user, visibility \\ "public") do
	{:ok, a} =
	CommonAPI.post(user, %{"status" => "Thread for my followers", "visibility" => visibility})

	a.id
	end

	defp create_activity(user, visibility, mention) do
	{:ok, a} =
	CommonAPI.post(user, %{
	"status" => "Thread for my followers with @#{mention.nickname}",
	"visibility" => visibility
	})

	a.id
	end

	defp create_thread(user1, user2, activity_id, visibility \\ "public") do
	{:ok, r1} =
	CommonAPI.post(user2, %{
	"status" => "@#{user1.nickname} #{user2.nickname} replies to #{user1.nickname}",
	"visibility" => visibility,
	"in_reply_to_status_id" => activity_id
	})

	{:ok, r2} =
	CommonAPI.post(user1, %{
	"status" => "@#{user2.nickname} #{user1.nickname} replies to #{user2.nickname}",
	"visibility" => visibility,
	"in_reply_to_status_id" => r1.id
	})

	{:ok, r3} =
	CommonAPI.post(user2, %{
	"status" => "@#{user1.nickname} #{user2.nickname} replies to #{user1.nickname}",
	"visibility" => visibility,
	"in_reply_to_status_id" => r2.id
	})

	%{r1: r1.id, r2: r2.id, r3: r3.id}
	end

	defp prepare_users do
	[u1, u2, u3, u4] = insert_list(4, :user)

	{:ok, u1} = User.follow(u1, u2)
	{:ok, u2} = User.follow(u2, u1)

	{:ok, u1} = User.follow(u1, u4)
	{:ok, u4} = User.follow(u4, u1)

	{:ok, u2} = User.follow(u2, u3)
	{:ok, u3} = User.follow(u3, u2)
	[u1, u2, u3, u4]
	end

	defp default_opts(user) do
	%{"blocking_user" => user}
	end

	defp public_timeline_opts(user) do
	user
	\|> default_opts()
	\|> Map.put("type", ["Create", "Announce"])
	\|> Map.put("muting_user", user)
	end

	defp home_timeline_opts(user) do
	opts =
	user
	\|> public_timeline_opts()
	\|> with_user(user)

	{[user.ap_id \| User.following(user)], opts}
	end

	defp direct_timeline_opts(user) do
	opts =
	user
	\|> default_opts()
	\|> Map.put("type", "Create")
	\|> with_user(user)
	\|> Map.put(:visibility, "direct")

	{[user.ap_id], opts}
	end

	defp with_user(opts, user), do: Map.put(opts, "user", user)

	defp fetch_activities({recipients, opts}) do
	ActivityPub.fetch_activities(recipients, opts) \|> Enum.map(& &1.id)
	end

	defp fetch_public_activities(opts) do
	ActivityPub.fetch_public_activities(opts) \|> Enum.map(& &1.id)
	end

	defp assert_timelines(
	user,
	home_activities,
	public_activities,
	direct_activities \\ []
	) do
	home_ids =
	user
	\|> home_timeline_opts()
	\|> fetch_activities()

	assert length(home_ids) == length(home_activities)

	assert_all(home_activities, home_ids)

	public_ids =
	user
	\|> public_timeline_opts()
	\|> fetch_public_activities()

	assert length(public_ids) == length(public_activities)

	assert_all(public_activities, public_ids)

	direct_ids =
	user
	\|> direct_timeline_opts()
	\|> fetch_activities()

	assert length(direct_ids) == length(direct_activities)

	assert_all(direct_activities, direct_ids)
	end

	defp assert_all(values, ids) do
	assert Enum.all?(values, &(&1 in ids))
	end

	describe "get_thread_recipients/2" do
	test "public for public post" do
	user = insert(:user)
	{:ok, post} = CommonAPI.post(user, %{"status" => "Yeah!"})

	assert post.thread_recipients == [Constants.as_public()]
	end

	test "user follower address for private post" do
	user = insert(:user)
	{:ok, post} = CommonAPI.post(user, %{"status" => "Yeah!", "visibility" => "private"})

	assert post.thread_recipients == [
	user.follower_address
	]
	end

	test "public for public reply to public post" do
	[u1, u2] = insert_list(2, :user)

	{:ok, post} = CommonAPI.post(u1, %{"status" => "Yeah!"})

	{:ok, reply} =
	CommonAPI.post(u2, %{"status" => "Yeah!", "in_reply_to_status_id" => post.id})

	assert post.thread_recipients == [Constants.as_public()]
	assert reply.thread_recipients == [Constants.as_public()]
	end

	test "user follower address for private reply to public post" do
	[u1, u2] = insert_list(2, :user)

	{:ok, post} = CommonAPI.post(u1, %{"status" => "Yeah!"})

	{:ok, reply} =
	CommonAPI.post(u2, %{
	"status" => "Yeah!",
	"in_reply_to_status_id" => post.id,
	"visibility" => "private"
	})

	assert post.thread_recipients == [Constants.as_public()]
	assert reply.thread_recipients == [u2.follower_address]
	end

	test "user follower address for public reply to private post" do
	[u1, u2] = insert_list(2, :user)

	{:ok, post} = CommonAPI.post(u1, %{"status" => "yeah!", "visibility" => "private"})

	{:ok, reply} =
	CommonAPI.post(u2, %{
	"status" => "yeah",
	"in_reply_to_status_id" => post.id,
	"visibility" => "public"
	})

	assert post.thread_recipients == [u1.follower_address]
	assert reply.thread_recipients == [u1.follower_address]
	end

	test "users followers addresses for private reply to private post" do
	[u1, u2] = insert_list(2, :user)

	{:ok, post} = CommonAPI.post(u1, %{"status" => "yeah!", "visibility" => "private"})

	{:ok, reply} =
	CommonAPI.post(u2, %{
	"status" => "yeah",
	"in_reply_to_status_id" => post.id,
	"visibility" => "private"
	})

	assert post.thread_recipients == [u1.follower_address]
	assert reply.thread_recipients == [u1.follower_address, u2.follower_address]
	end

	test "follower addresses for public post and private replies" do
	[u1, u2, u3] = insert_list(3, :user)

	{:ok, post} = CommonAPI.post(u1, %{"status" => "yeah!"})

	{:ok, reply1} =
	CommonAPI.post(u2, %{
	"status" => "yeah",
	"in_reply_to_status_id" => post.id,
	"visibility" => "private"
	})

	{:ok, reply2} =
	CommonAPI.post(u3, %{
	"status" => "yeah",
	"in_reply_to_status_id" => reply1.id,
	"visibility" => "private"
	})

	assert post.thread_recipients == [Constants.as_public()]
	assert reply1.thread_recipients == [u2.follower_address]
	assert reply2.thread_recipients == [u2.follower_address, u3.follower_address]
	end

	test "follower addresses for private post and private replies" do
	[u1, u2, u3] = insert_list(3, :user)

	{:ok, post} = CommonAPI.post(u1, %{"status" => "yeah!", "visibility" => "private"})

	{:ok, reply1} =
	CommonAPI.post(u2, %{
	"status" => "yeah",
	"in_reply_to_status_id" => post.id,
	"visibility" => "private"
	})

	{:ok, reply2} =
	CommonAPI.post(u3, %{
	"status" => "yeah",
	"in_reply_to_status_id" => reply1.id,
	"visibility" => "private"
	})

	assert post.thread_recipients == [u1.follower_address]
	assert reply1.thread_recipients == [u1.follower_address, u2.follower_address]

	assert reply2.thread_recipients == [
	u1.follower_address,
	u2.follower_address,
	u3.follower_address
	]
	end
	+
	+ test "public for public reply if thread recipients of root post is nil or empty list" do
	+ [u1, u2] = insert_list(2, :user)
	+
	+ {:ok, post} = CommonAPI.post(u1, %{"status" => "Yeah!"})
	+ {:ok, post} = Repo.update(Ecto.Changeset.change(post, thread_recipients: nil))
	+
	+ {:ok, reply} =
	+ CommonAPI.post(u2, %{"status" => "Yeah!", "in_reply_to_status_id" => post.id})
	+
	+ assert post.thread_recipients == nil
	+ assert reply.thread_recipients == [Constants.as_public()]
	+
	+ {:ok, post} = Repo.update(Ecto.Changeset.change(post, thread_recipients: []))
	+
	+ {:ok, reply2} =
	+ CommonAPI.post(u2, %{"status" => "Yeah!", "in_reply_to_status_id" => post.id})
	+
	+ assert post.thread_recipients == []
	+ assert reply2.thread_recipients == [Constants.as_public()]
	+ end
	+
	+ test "user follower address for private reply if thread recipients of root post is nil or empty list" do
	+ [u1, u2] = insert_list(2, :user)
	+
	+ {:ok, post} = CommonAPI.post(u1, %{"status" => "Yeah!"})
	+ {:ok, post} = Repo.update(Ecto.Changeset.change(post, thread_recipients: nil))
	+
	+ {:ok, reply} =
	+ CommonAPI.post(u2, %{
	+ "status" => "Yeah!",
	+ "in_reply_to_status_id" => post.id,
	+ "visibility" => "private"
	+ })
	+
	+ assert post.thread_recipients == nil
	+ assert reply.thread_recipients == [u2.follower_address]
	+
	+ {:ok, post} = Repo.update(Ecto.Changeset.change(post, thread_recipients: []))
	+
	+ {:ok, reply2} =
	+ CommonAPI.post(u2, %{
	+ "status" => "Yeah!",
	+ "in_reply_to_status_id" => post.id,
	+ "visibility" => "private"
	+ })
	+
	+ assert post.thread_recipients == []
	+ assert reply2.thread_recipients == [u2.follower_address]
	+ end
	end

	describe "thread visibility" do
	setup do
	[u1, u2, u3] = insert_list(3, :user)

	{:ok, u1} = User.follow(u1, u2)
	{:ok, u2} = User.follow(u2, u1)

	{:ok, u2} = User.follow(u2, u3)
	{:ok, u3} = User.follow(u3, u2)

	{:ok, u1: u1, u2: u2, u3: u3}
	end

	test "private reply to private post", %{u1: u1, u2: u2, u3: u3} do
	{:ok, activity} = CommonAPI.post(u1, %{"status" => "yeah", "visibility" => "private"})

	{:ok, reply} =
	CommonAPI.post(u2, %{
	"status" => "yeah",
	"visibility" => "public",
	"in_reply_to_status_id" => activity.id
	})

	params =
	%{}
	\|> Map.put("type", ["Create", "Announce"])
	\|> Map.put("blocking_user", u3)
	\|> Map.put("muting_user", u3)
	\|> Map.put("user", u3)

	recipients = [u3.ap_id \| User.following(u3)]

	assert ActivityPub.fetch_activities(
	recipients,
	params
	) == []

	assert ActivityPub.fetch_public_activities(params) == []

	u3 = Map.put(u3, :skip_thread_containment, true)

	params =
	params
	\|> Map.put("blocking_user", u3)
	\|> Map.put("muting_user", u3)
	\|> Map.put("user", u3)

	[result] =
	ActivityPub.fetch_activities(
	recipients,
	params
	)

	assert reply.id == result.id

	[result] = ActivityPub.fetch_public_activities(params)
	assert reply.id == result.id
	end

	test "private reply to public post", %{u1: u1, u2: u2, u3: u3} do
	{:ok, activity} = CommonAPI.post(u2, %{"status" => "yeah"})

	{:ok, private_reply} =
	CommonAPI.post(u1, %{
	"status" => "yeah",
	"visibility" => "private",
	"in_reply_to_status_id" => activity.id
	})

	{:ok, public_reply} =
	CommonAPI.post(u2, %{
	"status" => "yeah",
	"visibility" => "public",
	"in_reply_to_status_id" => private_reply.id
	})

	params =
	%{}
	\|> Map.put("type", ["Create", "Announce"])
	\|> Map.put("blocking_user", u3)
	\|> Map.put("muting_user", u3)
	\|> Map.put("user", u3)

	recipients = [u3.ap_id \| User.following(u3)]

	[result] =
	ActivityPub.fetch_activities(
	recipients,
	params
	)

	assert result.id == activity.id

	[result] = ActivityPub.fetch_public_activities(params)
	assert result.id == activity.id

	u3 = Map.put(u3, :skip_thread_containment, true)

	params =
	params
	\|> Map.put("blocking_user", u3)
	\|> Map.put("muting_user", u3)
	\|> Map.put("user", u3)

	result =
	ActivityPub.fetch_activities(
	recipients,
	params
	)
	\|> Enum.map(& &1.id)

	assert activity.id in result
	assert public_reply.id in result

	result = ActivityPub.fetch_public_activities(params) \|> Enum.map(& &1.id)
	assert activity.id in result
	assert public_reply.id in result
	end
	end
	end

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