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	diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
	index 399a66787..6a8129ac8 100644
	--- a/lib/pleroma/user.ex
	+++ b/lib/pleroma/user.ex
	@@ -1,554 +1,558 @@
	defmodule Pleroma.User do
	use Ecto.Schema

	import Ecto.{Changeset, Query}
	alias Pleroma.{Repo, User, Object, Web, Activity, Notification}
	alias Comeonin.Pbkdf2
	alias Pleroma.Web.{OStatus, Websub}
	alias Pleroma.Web.ActivityPub.{Utils, ActivityPub}

	schema "users" do
	field(:bio, :string)
	field(:email, :string)
	field(:name, :string)
	field(:nickname, :string)
	field(:password_hash, :string)
	field(:password, :string, virtual: true)
	field(:password_confirmation, :string, virtual: true)
	field(:following, {:array, :string}, default: [])
	field(:ap_id, :string)
	field(:avatar, :map)
	field(:local, :boolean, default: true)
	field(:info, :map, default: %{})
	field(:follower_address, :string)
	field(:search_distance, :float, virtual: true)
	has_many(:notifications, Notification)

	timestamps()
	end

	def avatar_url(user) do
	case user.avatar do
	%{"url" => [%{"href" => href} \| _]} -> href
	_ -> "#{Web.base_url()}/images/avi.png"
	end
	end

	def banner_url(user) do
	case user.info["banner"] do
	%{"url" => [%{"href" => href} \| _]} -> href
	_ -> "#{Web.base_url()}/images/banner.png"
	end
	end

	def ap_id(%User{nickname: nickname}) do
	"#{Web.base_url()}/users/#{nickname}"
	end

	def ap_followers(%User{} = user) do
	"#{ap_id(user)}/followers"
	end

	def follow_changeset(struct, params \\ %{}) do
	struct
	\|> cast(params, [:following])
	\|> validate_required([:following])
	end

	def info_changeset(struct, params \\ %{}) do
	struct
	\|> cast(params, [:info])
	\|> validate_required([:info])
	end

	def user_info(%User{} = user) do
	oneself = if user.local, do: 1, else: 0

	%{
	following_count: length(user.following) - oneself,
	note_count: user.info["note_count"] \|\| 0,
	follower_count: user.info["follower_count"] \|\| 0
	}
	end

	@email_regex ~r/^[a-zA-Z0-9.!#$%&'+\/=?^_`{\|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)$/
	def remote_user_creation(params) do
	changes =
	%User{}
	\|> cast(params, [:bio, :name, :ap_id, :nickname, :info, :avatar])
	\|> validate_required([:name, :ap_id, :nickname])
	\|> unique_constraint(:nickname)
	\|> validate_format(:nickname, @email_regex)
	\|> validate_length(:bio, max: 5000)
	\|> validate_length(:name, max: 100)
	\|> put_change(:local, false)

	if changes.valid? do
	case changes.changes[:info]["source_data"] do
	%{"followers" => followers} ->
	changes
	\|> put_change(:follower_address, followers)

	_ ->
	followers = User.ap_followers(%User{nickname: changes.changes[:nickname]})

	changes
	\|> put_change(:follower_address, followers)
	end
	else
	changes
	end
	end

	def update_changeset(struct, params \\ %{}) do
	struct
	\|> cast(params, [:bio, :name])
	\|> unique_constraint(:nickname)
	\|> validate_format(:nickname, ~r/^[a-zA-Z\d]+$/)
	\|> validate_length(:bio, max: 5000)
	\|> validate_length(:name, min: 1, max: 100)
	end

	def upgrade_changeset(struct, params \\ %{}) do
	struct
	\|> cast(params, [:bio, :name, :info, :follower_address, :avatar])
	\|> unique_constraint(:nickname)
	\|> validate_format(:nickname, ~r/^[a-zA-Z\d]+$/)
	\|> validate_length(:bio, max: 5000)
	\|> validate_length(:name, max: 100)
	end

	def password_update_changeset(struct, params) do
	changeset =
	struct
	\|> cast(params, [:password, :password_confirmation])
	\|> validate_required([:password, :password_confirmation])
	\|> validate_confirmation(:password)

	if changeset.valid? do
	hashed = Pbkdf2.hashpwsalt(changeset.changes[:password])

	changeset
	\|> put_change(:password_hash, hashed)
	else
	changeset
	end
	end

	def reset_password(user, data) do
	update_and_set_cache(password_update_changeset(user, data))
	end

	def register_changeset(struct, params \\ %{}) do
	changeset =
	struct
	\|> cast(params, [:bio, :email, :name, :nickname, :password, :password_confirmation])
	\|> validate_required([:email, :name, :nickname, :password, :password_confirmation])
	\|> validate_confirmation(:password)
	\|> unique_constraint(:email)
	\|> unique_constraint(:nickname)
	\|> validate_format(:nickname, ~r/^[a-zA-Z\d]+$/)
	\|> validate_format(:email, @email_regex)
	\|> validate_length(:bio, max: 1000)
	\|> validate_length(:name, min: 1, max: 100)

	if changeset.valid? do
	hashed = Pbkdf2.hashpwsalt(changeset.changes[:password])
	ap_id = User.ap_id(%User{nickname: changeset.changes[:nickname]})
	followers = User.ap_followers(%User{nickname: changeset.changes[:nickname]})

	changeset
	\|> put_change(:password_hash, hashed)
	\|> put_change(:ap_id, ap_id)
	\|> put_change(:following, [followers])
	\|> put_change(:follower_address, followers)
	else
	changeset
	end
	end

	def follow(%User{} = follower, %User{info: info} = followed) do
	ap_followers = followed.follower_address

	if following?(follower, followed) or info["deactivated"] do
	{:error, "Could not follow user: #{followed.nickname} is already on your list."}
	else
	if !followed.local && follower.local && !ap_enabled?(followed) do
	Websub.subscribe(follower, followed)
	end

	following =
	[ap_followers \| follower.following]
	\|> Enum.uniq()

	follower =
	follower
	\|> follow_changeset(%{following: following})
	\|> update_and_set_cache

	{:ok, _} = update_follower_count(followed)

	follower
	end
	end

	def unfollow(%User{} = follower, %User{} = followed) do
	ap_followers = followed.follower_address

	if following?(follower, followed) and follower.ap_id != followed.ap_id do
	following =
	follower.following
	\|> List.delete(ap_followers)

	{:ok, follower} =
	follower
	\|> follow_changeset(%{following: following})
	\|> update_and_set_cache

	{:ok, followed} = update_follower_count(followed)

	{:ok, follower, Utils.fetch_latest_follow(follower, followed)}
	else
	{:error, "Not subscribed!"}
	end
	end

	def following?(%User{} = follower, %User{} = followed) do
	Enum.member?(follower.following, followed.follower_address)
	end

	def get_by_ap_id(ap_id) do
	Repo.get_by(User, ap_id: ap_id)
	end

	def update_and_set_cache(changeset) do
	with {:ok, user} <- Repo.update(changeset) do
	Cachex.set(:user_cache, "ap_id:#{user.ap_id}", user)
	Cachex.set(:user_cache, "nickname:#{user.nickname}", user)
	Cachex.set(:user_cache, "user_info:#{user.id}", user_info(user))
	{:ok, user}
	else
	e -> e
	end
	end

	def invalidate_cache(user) do
	Cachex.del(:user_cache, "ap_id:#{user.ap_id}")
	Cachex.del(:user_cache, "nickname:#{user.nickname}")
	end

	def get_cached_by_ap_id(ap_id) do
	key = "ap_id:#{ap_id}"
	Cachex.get!(:user_cache, key, fallback: fn _ -> get_by_ap_id(ap_id) end)
	end

	def get_cached_by_nickname(nickname) do
	key = "nickname:#{nickname}"
	Cachex.get!(:user_cache, key, fallback: fn _ -> get_or_fetch_by_nickname(nickname) end)
	end

	def get_by_nickname(nickname) do
	Repo.get_by(User, nickname: nickname)
	end

	def get_by_nickname_or_email(nickname_or_email) do
	case user = Repo.get_by(User, nickname: nickname_or_email) do
	%User{} -> user
	nil -> Repo.get_by(User, email: nickname_or_email)
	end
	end

	def get_cached_user_info(user) do
	key = "user_info:#{user.id}"
	Cachex.get!(:user_cache, key, fallback: fn _ -> user_info(user) end)
	end

	def fetch_by_nickname(nickname) do
	ap_try = ActivityPub.make_user_from_nickname(nickname)

	case ap_try do
	{:ok, user} -> {:ok, user}
	_ -> OStatus.make_user(nickname)
	end
	end

	def get_or_fetch_by_nickname(nickname) do
	with %User{} = user <- get_by_nickname(nickname) do
	user
	else
	_e ->
	with [_nick, _domain] <- String.split(nickname, "@"),
	{:ok, user} <- fetch_by_nickname(nickname) do
	user
	else
	_e -> nil
	end
	end
	end

	def get_followers_query(%User{id: id, follower_address: follower_address}) do
	from(
	u in User,
	where: fragment("? <@ ?", ^[follower_address], u.following),
	where: u.id != ^id
	)
	end

	def get_followers(user) do
	q = get_followers_query(user)

	{:ok, Repo.all(q)}
	end

	def get_friends_query(%User{id: id, following: following}) do
	from(
	u in User,
	where: u.follower_address in ^following,
	where: u.id != ^id
	)
	end

	def get_friends(user) do
	q = get_friends_query(user)

	{:ok, Repo.all(q)}
	end

	def increase_note_count(%User{} = user) do
	note_count = (user.info["note_count"] \|\| 0) + 1
	new_info = Map.put(user.info, "note_count", note_count)

	cs = info_changeset(user, %{info: new_info})

	update_and_set_cache(cs)
	end

	def decrease_note_count(%User{} = user) do
	note_count = user.info["note_count"] \|\| 0
	note_count = if note_count <= 0, do: 0, else: note_count - 1
	new_info = Map.put(user.info, "note_count", note_count)

	cs = info_changeset(user, %{info: new_info})

	update_and_set_cache(cs)
	end

	def update_note_count(%User{} = user) do
	note_count_query =
	from(
	a in Object,
	where: fragment("?->>'actor' = ? and ?->>'type' = 'Note'", a.data, ^user.ap_id, a.data),
	select: count(a.id)
	)

	note_count = Repo.one(note_count_query)

	new_info = Map.put(user.info, "note_count", note_count)

	cs = info_changeset(user, %{info: new_info})

	update_and_set_cache(cs)
	end

	def update_follower_count(%User{} = user) do
	follower_count_query =
	from(
	u in User,
	where: ^user.follower_address in u.following,
	where: u.id != ^user.id,
	select: count(u.id)
	)

	follower_count = Repo.one(follower_count_query)

	new_info = Map.put(user.info, "follower_count", follower_count)

	cs = info_changeset(user, %{info: new_info})

	update_and_set_cache(cs)
	end

	def get_notified_from_activity(%Activity{recipients: to}) do
	query =
	from(
	u in User,
	where: u.ap_id in ^to,
	where: u.local == true
	)

	Repo.all(query)
	end

	def get_recipients_from_activity(%Activity{recipients: to}) do
	query =
	from(
	u in User,
	where: u.ap_id in ^to,
	or_where: fragment("? && ?", u.following, ^to)
	)

	query = from(u in query, where: u.local == true)

	Repo.all(query)
	end

	def search(query, resolve) do
	# strip the beginning @ off if there is a query
	query = String.trim_leading(query, "@")

	if resolve do
	User.get_or_fetch_by_nickname(query)
	end

	inner =
	from(
	u in User,
	select_merge: %{
	- search_distance: fragment(
	- "? <-> (? \|\| ?)",
	- ^query,
	- u.nickname,
	- u.name
	- )}
	+ search_distance:
	+ fragment(
	+ "? <-> (? \|\| ?)",
	+ ^query,
	+ u.nickname,
	+ u.name
	+ )
	+ }
	)

	- q = from(s in subquery(inner),
	- order_by: s.search_distance,
	- limit: 20
	- )
	+ q =
	+ from(
	+ s in subquery(inner),
	+ order_by: s.search_distance,
	+ limit: 20
	+ )

	Repo.all(q)
	end

	def block(user, %{ap_id: ap_id}) do
	blocks = user.info["blocks"] \|\| []
	new_blocks = Enum.uniq([ap_id \| blocks])
	new_info = Map.put(user.info, "blocks", new_blocks)

	cs = User.info_changeset(user, %{info: new_info})
	update_and_set_cache(cs)
	end

	def unblock(user, %{ap_id: ap_id}) do
	blocks = user.info["blocks"] \|\| []
	new_blocks = List.delete(blocks, ap_id)
	new_info = Map.put(user.info, "blocks", new_blocks)

	cs = User.info_changeset(user, %{info: new_info})
	update_and_set_cache(cs)
	end

	def blocks?(user, %{ap_id: ap_id}) do
	blocks = user.info["blocks"] \|\| []
	Enum.member?(blocks, ap_id)
	end

	def local_user_query() do
	from(u in User, where: u.local == true)
	end

	def deactivate(%User{} = user) do
	new_info = Map.put(user.info, "deactivated", true)
	cs = User.info_changeset(user, %{info: new_info})
	update_and_set_cache(cs)
	end

	def delete(%User{} = user) do
	{:ok, user} = User.deactivate(user)

	# Remove all relationships
	{:ok, followers} = User.get_followers(user)

	followers
	\|> Enum.each(fn follower -> User.unfollow(follower, user) end)

	{:ok, friends} = User.get_friends(user)

	friends
	\|> Enum.each(fn followed -> User.unfollow(user, followed) end)

	query = from(a in Activity, where: a.actor == ^user.ap_id)

	Repo.all(query)
	\|> Enum.each(fn activity ->
	case activity.data["type"] do
	"Create" ->
	ActivityPub.delete(Object.get_by_ap_id(activity.data["object"]["id"]))

	# TODO: Do something with likes, follows, repeats.
	_ ->
	"Doing nothing"
	end
	end)

	:ok
	end

	def get_or_fetch_by_ap_id(ap_id) do
	if user = get_by_ap_id(ap_id) do
	user
	else
	ap_try = ActivityPub.make_user_from_ap_id(ap_id)

	case ap_try do
	{:ok, user} ->
	user

	_ ->
	case OStatus.make_user(ap_id) do
	{:ok, user} -> user
	_ -> {:error, "Could not fetch by AP id"}
	end
	end
	end
	end

	# AP style
	def public_key_from_info(%{
	"source_data" => %{"publicKey" => %{"publicKeyPem" => public_key_pem}}
	}) do
	key =
	:public_key.pem_decode(public_key_pem)
	\|> hd()
	\|> :public_key.pem_entry_decode()

	{:ok, key}
	end

	# OStatus Magic Key
	def public_key_from_info(%{"magic_key" => magic_key}) do
	{:ok, Pleroma.Web.Salmon.decode_key(magic_key)}
	end

	def get_public_key_for_ap_id(ap_id) do
	with %User{} = user <- get_or_fetch_by_ap_id(ap_id),
	{:ok, public_key} <- public_key_from_info(user.info) do
	{:ok, public_key}
	else
	_ -> :error
	end
	end

	defp blank?(""), do: nil
	defp blank?(n), do: n

	def insert_or_update_user(data) do
	data =
	data
	\|> Map.put(:name, blank?(data[:name]) \|\| data[:nickname])

	cs = User.remote_user_creation(data)
	Repo.insert(cs, on_conflict: :replace_all, conflict_target: :nickname)
	end

	def ap_enabled?(%User{info: info}), do: info["ap_enabled"]
	def ap_enabled?(_), do: false

	def get_or_fetch(uri_or_nickname) do
	if String.starts_with?(uri_or_nickname, "http") do
	get_or_fetch_by_ap_id(uri_or_nickname)
	else
	get_or_fetch_by_nickname(uri_or_nickname)
	end
	end
	end
	diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
	index 0d539c02c..fe0294c5c 100644
	--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
	+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
	@@ -1,534 +1,537 @@
	defmodule Pleroma.Web.ActivityPub.Transmogrifier do
	@moduledoc """
	A module to handle coding from internal to wire ActivityPub and back.
	"""
	alias Pleroma.User
	alias Pleroma.Object
	alias Pleroma.Activity
	alias Pleroma.Repo
	alias Pleroma.Web.ActivityPub.ActivityPub

	import Ecto.Query

	require Logger

	@doc """
	Modifies an incoming AP object (mastodon format) to our internal format.
	"""
	def fix_object(object) do
	object
	\|> Map.put("actor", object["attributedTo"])
	\|> fix_attachments
	\|> fix_context
	\|> fix_in_reply_to
	\|> fix_emoji
	\|> fix_tag
	end

	def fix_in_reply_to(%{"inReplyTo" => in_reply_to_id} = object)
	when not is_nil(in_reply_to_id) do
	case ActivityPub.fetch_object_from_id(in_reply_to_id) do
	{:ok, replied_object} ->
	activity = Activity.get_create_activity_by_object_ap_id(replied_object.data["id"])

	object
	\|> Map.put("inReplyTo", replied_object.data["id"])
	\|> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] \|\| in_reply_to_id)
	\|> Map.put("inReplyToStatusId", activity.id)
	\|> Map.put("conversation", replied_object.data["context"] \|\| object["conversation"])
	\|> Map.put("context", replied_object.data["context"] \|\| object["conversation"])

	e ->
	Logger.error("Couldn't fetch #{object["inReplyTo"]} #{inspect(e)}")
	object
	end
	end

	def fix_in_reply_to(object), do: object

	def fix_context(object) do
	object
	\|> Map.put("context", object["conversation"])
	end

	def fix_attachments(object) do
	attachments =
	(object["attachment"] \|\| [])
	\|> Enum.map(fn data ->
	url = [%{"type" => "Link", "mediaType" => data["mediaType"], "href" => data["url"]}]
	Map.put(data, "url", url)
	end)

	object
	\|> Map.put("attachment", attachments)
	end

	def fix_emoji(object) do
	tags = object["tag"] \|\| []
	emoji = tags \|> Enum.filter(fn data -> data["type"] == "Emoji" and data["icon"] end)

	emoji =
	emoji
	\|> Enum.reduce(%{}, fn data, mapping ->
	name = data["name"]

	name =
	if String.starts_with?(name, ":") do
	name \|> String.slice(1..-2)
	else
	name
	end

	mapping \|> Map.put(name, data["icon"]["url"])
	end)

	# we merge mastodon and pleroma emoji into a single mapping, to allow for both wire formats
	emoji = Map.merge(object["emoji"] \|\| %{}, emoji)

	object
	\|> Map.put("emoji", emoji)
	end

	def fix_tag(object) do
	tags =
	(object["tag"] \|\| [])
	\|> Enum.filter(fn data -> data["type"] == "Hashtag" and data["name"] end)
	\|> Enum.map(fn data -> String.slice(data["name"], 1..-1) end)

	combined = (object["tag"] \|\| []) ++ tags

	object
	\|> Map.put("tag", combined)
	end

	# TODO: validate those with a Ecto scheme
	# - tags
	# - emoji
	def handle_incoming(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
	with nil <- Activity.get_create_activity_by_object_ap_id(object["id"]),
	%User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
	object = fix_object(data["object"])

	params = %{
	to: data["to"],
	object: object,
	actor: user,
	context: object["conversation"],
	local: false,
	published: data["published"],
	additional:
	Map.take(data, [
	"cc",
	"id"
	])
	}

	ActivityPub.create(params)
	else
	%Activity{} = activity -> {:ok, activity}
	_e -> :error
	end
	end

	def handle_incoming(
	%{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data
	) do
	with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
	%User{} = follower <- User.get_or_fetch_by_ap_id(follower),
	{:ok, activity} <- ActivityPub.follow(follower, followed, id, false) do
	ActivityPub.accept(%{to: [follower.ap_id], actor: followed.ap_id, object: data, local: true})

	User.follow(follower, followed)
	{:ok, activity}
	else
	_e -> :error
	end
	end

	def handle_incoming(
	%{"type" => "Like", "object" => object_id, "actor" => actor, "id" => id} = _data
	) do
	with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
	{:ok, object} <-
	get_obj_helper(object_id) \|\| ActivityPub.fetch_object_from_id(object_id),
	{:ok, activity, _object} <- ActivityPub.like(actor, object, id, false) do
	{:ok, activity}
	else
	_e -> :error
	end
	end

	def handle_incoming(
	%{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = _data
	) do
	with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
	{:ok, object} <-
	get_obj_helper(object_id) \|\| ActivityPub.fetch_object_from_id(object_id),
	{:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false) do
	{:ok, activity}
	else
	_e -> :error
	end
	end

	def handle_incoming(
	%{"type" => "Update", "object" => %{"type" => "Person"} = object, "actor" => actor_id} =
	data
	) do
	with %User{ap_id: ^actor_id} = actor <- User.get_by_ap_id(object["id"]) do
	{:ok, new_user_data} = ActivityPub.user_data_from_user_object(object)

	banner = new_user_data[:info]["banner"]

	update_data =
	new_user_data
	\|> Map.take([:name, :bio, :avatar])
	\|> Map.put(:info, Map.merge(actor.info, %{"banner" => banner}))

	actor
	\|> User.upgrade_changeset(update_data)
	\|> User.update_and_set_cache()

	ActivityPub.update(%{
	local: false,
	to: data["to"] \|\| [],
	cc: data["cc"] \|\| [],
	object: object,
	actor: actor_id
	})
	else
	e ->
	Logger.error(e)
	:error
	end
	end

	# TODO: Make secure.
	def handle_incoming(
	%{"type" => "Delete", "object" => object_id, "actor" => actor, "id" => _id} = _data
	) do
	object_id =
	case object_id do
	%{"id" => id} -> id
	id -> id
	end

	with %User{} = _actor <- User.get_or_fetch_by_ap_id(actor),
	{:ok, object} <-
	get_obj_helper(object_id) \|\| ActivityPub.fetch_object_from_id(object_id),
	{:ok, activity} <- ActivityPub.delete(object, false) do
	{:ok, activity}
	else
	_e -> :error
	end
	end

	def handle_incoming(
	%{
	"type" => "Undo",
	"object" => %{"type" => "Announce", "object" => object_id},
	"actor" => actor,
	"id" => id
	} = data
	) do
	with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
	{:ok, object} <-
	get_obj_helper(object_id) \|\| ActivityPub.fetch_object_from_id(object_id),
	{:ok, activity, _, _} <- ActivityPub.unannounce(actor, object, id, false) do
	{:ok, activity}
	else
	e -> :error
	end
	end

	def handle_incoming(
	%{
	"type" => "Undo",
	"object" => %{"type" => "Follow", "object" => followed},
	"actor" => follower,
	"id" => id
	} = data
	) do
	with %User{local: true} = followed = User.get_cached_by_ap_id(followed),
	%User{} = follower = User.get_or_fetch_by_ap_id(follower),
	{:ok, activity} <- ActivityPub.unfollow(follower, followed, false) do
	User.unfollow(follower, followed)
	{:ok, activity}
	else
	e -> :error
	end
	end

	def handle_incoming(%{"type" => "Undo", "object" => object_id} = data) do
	object = Object.get_by_ap_id(object_id).data
	data = Map.put(data, "object", object)

	handle_incoming(data)
	end

	- def handle_incoming(%{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = data) do
	+ def handle_incoming(
	+ %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = data
	+ ) do
	with %User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
	%User{} = blocker = User.get_or_fetch_by_ap_id(blocker),
	{:ok, activity} <- ActivityPub.block(blocker, blocked, false) do
	User.unfollow(blocker, blocked)
	User.block(blocker, blocked.ap_id)
	{:ok, activity}
	else
	e -> :error
	end
	end
	+
	# TODO
	# Accept
	# Undo for non-Announce

	def handle_incoming(_), do: :error

	def get_obj_helper(id) do
	if object = Object.get_by_ap_id(id), do: {:ok, object}, else: nil
	end

	def set_reply_to_uri(%{"inReplyTo" => inReplyTo} = object) do
	with false <- String.starts_with?(inReplyTo, "http"),
	{:ok, %{data: replied_to_object}} <- get_obj_helper(inReplyTo) do
	Map.put(object, "inReplyTo", replied_to_object["external_url"] \|\| inReplyTo)
	else
	_e -> object
	end
	end

	def set_reply_to_uri(obj), do: obj

	# Prepares the object of an outgoing create activity.
	def prepare_object(object) do
	object
	\|> set_sensitive
	\|> add_hashtags
	\|> add_mention_tags
	\|> add_emoji_tags
	\|> add_attributed_to
	\|> prepare_attachments
	\|> set_conversation
	\|> set_reply_to_uri
	end

	# @doc
	# """
	# internal -> Mastodon
	# """

	def prepare_outgoing(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
	object =
	object
	\|> prepare_object

	data =
	data
	\|> Map.put("object", object)
	\|> Map.put("@context", "https://www.w3.org/ns/activitystreams")

	{:ok, data}
	end

	def prepare_outgoing(%{"type" => _type} = data) do
	data =
	data
	\|> maybe_fix_object_url
	\|> Map.put("@context", "https://www.w3.org/ns/activitystreams")

	{:ok, data}
	end

	def maybe_fix_object_url(data) do
	if is_binary(data["object"]) and not String.starts_with?(data["object"], "http") do
	case ActivityPub.fetch_object_from_id(data["object"]) do
	{:ok, relative_object} ->
	if relative_object.data["external_url"] do
	_data =
	data
	\|> Map.put("object", relative_object.data["external_url"])
	else
	data
	end

	e ->
	Logger.error("Couldn't fetch #{data["object"]} #{inspect(e)}")
	data
	end
	else
	data
	end
	end

	def add_hashtags(object) do
	tags =
	(object["tag"] \|\| [])
	\|> Enum.map(fn tag ->
	%{
	"href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
	"name" => "##{tag}",
	"type" => "Hashtag"
	}
	end)

	object
	\|> Map.put("tag", tags)
	end

	def add_mention_tags(object) do
	recipients = object["to"] ++ (object["cc"] \|\| [])

	mentions =
	recipients
	\|> Enum.map(fn ap_id -> User.get_cached_by_ap_id(ap_id) end)
	\|> Enum.filter(& &1)
	\|> Enum.map(fn user ->
	%{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"}
	end)

	tags = object["tag"] \|\| []

	object
	\|> Map.put("tag", tags ++ mentions)
	end

	# TODO: we should probably send mtime instead of unix epoch time for updated
	def add_emoji_tags(object) do
	tags = object["tag"] \|\| []
	emoji = object["emoji"] \|\| []

	out =
	emoji
	\|> Enum.map(fn {name, url} ->
	%{
	"icon" => %{"url" => url, "type" => "Image"},
	"name" => ":" <> name <> ":",
	"type" => "Emoji",
	"updated" => "1970-01-01T00:00:00Z",
	"id" => url
	}
	end)

	object
	\|> Map.put("tag", tags ++ out)
	end

	def set_conversation(object) do
	Map.put(object, "conversation", object["context"])
	end

	def set_sensitive(object) do
	tags = object["tag"] \|\| []
	Map.put(object, "sensitive", "nsfw" in tags)
	end

	def add_attributed_to(object) do
	attributedTo = object["attributedTo"] \|\| object["actor"]

	object
	\|> Map.put("attributedTo", attributedTo)
	end

	def prepare_attachments(object) do
	attachments =
	(object["attachment"] \|\| [])
	\|> Enum.map(fn data ->
	[%{"mediaType" => media_type, "href" => href} \| _] = data["url"]
	%{"url" => href, "mediaType" => media_type, "name" => data["name"], "type" => "Document"}
	end)

	object
	\|> Map.put("attachment", attachments)
	end

	defp user_upgrade_task(user) do
	old_follower_address = User.ap_followers(user)

	q =
	from(
	u in User,
	where: ^old_follower_address in u.following,
	update: [
	set: [
	following:
	fragment(
	"array_replace(?,?,?)",
	u.following,
	^old_follower_address,
	^user.follower_address
	)
	]
	]
	)

	Repo.update_all(q, [])

	maybe_retire_websub(user.ap_id)

	# Only do this for recent activties, don't go through the whole db.
	# Only look at the last 1000 activities.
	since = (Repo.aggregate(Activity, :max, :id) \|\| 0) - 1_000

	q =
	from(
	a in Activity,
	where: ^old_follower_address in a.recipients,
	where: a.id > ^since,
	update: [
	set: [
	recipients:
	fragment(
	"array_replace(?,?,?)",
	a.recipients,
	^old_follower_address,
	^user.follower_address
	)
	]
	]
	)

	Repo.update_all(q, [])
	end

	def upgrade_user_from_ap_id(ap_id, async \\ true) do
	with %User{local: false} = user <- User.get_by_ap_id(ap_id),
	{:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id) do
	data =
	data
	\|> Map.put(:info, Map.merge(user.info, data[:info]))

	already_ap = User.ap_enabled?(user)

	{:ok, user} =
	User.upgrade_changeset(user, data)
	\|> Repo.update()

	if !already_ap do
	# This could potentially take a long time, do it in the background
	if async do
	Task.start(fn ->
	user_upgrade_task(user)
	end)
	else
	user_upgrade_task(user)
	end
	end

	{:ok, user}
	else
	e -> e
	end
	end

	def maybe_retire_websub(ap_id) do
	# some sanity checks
	if is_binary(ap_id) && String.length(ap_id) > 8 do
	q =
	from(
	ws in Pleroma.Web.Websub.WebsubClientSubscription,
	where: fragment("? like ?", ws.topic, ^"#{ap_id}%")
	)

	Repo.delete_all(q)
	end
	end
	end
	diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
	index c29fc6b07..846dd97c2 100644
	--- a/lib/pleroma/web/activity_pub/utils.ex
	+++ b/lib/pleroma/web/activity_pub/utils.ex
	@@ -1,375 +1,376 @@
	defmodule Pleroma.Web.ActivityPub.Utils do
	alias Pleroma.{Repo, Web, Object, Activity, User}
	alias Pleroma.Web.Router.Helpers
	alias Pleroma.Web.Endpoint
	alias Ecto.{Changeset, UUID}
	import Ecto.Query

	def make_json_ld_header do
	%{
	"@context" => [
	"https://www.w3.org/ns/activitystreams",
	"https://w3id.org/security/v1",
	%{
	"manuallyApprovesFollowers" => "as:manuallyApprovesFollowers",
	"sensitive" => "as:sensitive",
	"Hashtag" => "as:Hashtag",
	"ostatus" => "http://ostatus.org#",
	"atomUri" => "ostatus:atomUri",
	"inReplyToAtomUri" => "ostatus:inReplyToAtomUri",
	"conversation" => "ostatus:conversation",
	"toot" => "http://joinmastodon.org/ns#",
	"Emoji" => "toot:Emoji"
	}
	]
	}
	end

	def make_date do
	DateTime.utc_now() \|> DateTime.to_iso8601()
	end

	def generate_activity_id do
	generate_id("activities")
	end

	def generate_context_id do
	generate_id("contexts")
	end

	def generate_object_id do
	Helpers.o_status_url(Endpoint, :object, UUID.generate())
	end

	def generate_id(type) do
	"#{Web.base_url()}/#{type}/#{UUID.generate()}"
	end

	def create_context(context) do
	context = context \|\| generate_id("contexts")
	changeset = Object.context_mapping(context)

	case Repo.insert(changeset) do
	{:ok, object} ->
	object

	# This should be solved by an upsert, but it seems ecto
	# has problems accessing the constraint inside the jsonb.
	{:error, _} ->
	Object.get_cached_by_ap_id(context)
	end
	end

	@doc """
	Enqueues an activity for federation if it's local
	"""
	def maybe_federate(%Activity{local: true} = activity) do
	priority =
	case activity.data["type"] do
	"Delete" -> 10
	"Create" -> 1
	_ -> 5
	end

	Pleroma.Web.Federator.enqueue(:publish, activity, priority)
	:ok
	end

	def maybe_federate(_), do: :ok

	@doc """
	Adds an id and a published data if they aren't there,
	also adds it to an included object
	"""
	def lazy_put_activity_defaults(map) do
	%{data: %{"id" => context}, id: context_id} = create_context(map["context"])

	map =
	map
	\|> Map.put_new_lazy("id", &generate_activity_id/0)
	\|> Map.put_new_lazy("published", &make_date/0)
	\|> Map.put_new("context", context)
	\|> Map.put_new("context_id", context_id)

	if is_map(map["object"]) do
	object = lazy_put_object_defaults(map["object"], map)
	%{map \| "object" => object}
	else
	map
	end
	end

	@doc """
	Adds an id and published date if they aren't there.
	"""
	def lazy_put_object_defaults(map, activity \\ %{}) do
	map
	\|> Map.put_new_lazy("id", &generate_object_id/0)
	\|> Map.put_new_lazy("published", &make_date/0)
	\|> Map.put_new("context", activity["context"])
	\|> Map.put_new("context_id", activity["context_id"])
	end

	@doc """
	Inserts a full object if it is contained in an activity.
	"""
	def insert_full_object(%{"object" => %{"type" => type} = object_data})
	when is_map(object_data) and type in ["Note"] do
	with {:ok, _} <- Object.create(object_data) do
	:ok
	end
	end

	def insert_full_object(_), do: :ok

	def update_object_in_activities(%{data: %{"id" => id}} = object) do
	# TODO
	# Update activities that already had this. Could be done in a seperate process.
	# Alternatively, just don't do this and fetch the current object each time. Most
	# could probably be taken from cache.
	relevant_activities = Activity.all_by_object_ap_id(id)

	Enum.map(relevant_activities, fn activity ->
	new_activity_data = activity.data \|> Map.put("object", object.data)
	changeset = Changeset.change(activity, data: new_activity_data)
	Repo.update(changeset)
	end)
	end

	#### Like-related helpers

	@doc """
	Returns an existing like if a user already liked an object
	"""
	def get_existing_like(actor, %{data: %{"id" => id}}) do
	query =
	from(
	activity in Activity,
	where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
	# this is to use the index
	where:
	fragment(
	"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
	activity.data,
	activity.data,
	^id
	),
	where: fragment("(?)->>'type' = 'Like'", activity.data)
	)

	Repo.one(query)
	end

	def make_like_data(%User{ap_id: ap_id} = actor, %{data: %{"id" => id}} = object, activity_id) do
	data = %{
	"type" => "Like",
	"actor" => ap_id,
	"object" => id,
	"to" => [actor.follower_address, object.data["actor"]],
	"cc" => ["https://www.w3.org/ns/activitystreams#Public"],
	"context" => object.data["context"]
	}

	if activity_id, do: Map.put(data, "id", activity_id), else: data
	end

	def update_element_in_object(property, element, object) do
	with new_data <-
	object.data
	\|> Map.put("#{property}_count", length(element))
	\|> Map.put("#{property}s", element),
	changeset <- Changeset.change(object, data: new_data),
	{:ok, object} <- Repo.update(changeset),
	_ <- update_object_in_activities(object) do
	{:ok, object}
	end
	end

	def update_likes_in_object(likes, object) do
	update_element_in_object("like", likes, object)
	end

	def add_like_to_object(%Activity{data: %{"actor" => actor}}, object) do
	with likes <- [actor \| object.data["likes"] \|\| []] \|> Enum.uniq() do
	update_likes_in_object(likes, object)
	end
	end

	def remove_like_from_object(%Activity{data: %{"actor" => actor}}, object) do
	with likes <- (object.data["likes"] \|\| []) \|> List.delete(actor) do
	update_likes_in_object(likes, object)
	end
	end

	#### Follow-related helpers

	@doc """
	Makes a follow activity data for the given follower and followed
	"""
	def make_follow_data(%User{ap_id: follower_id}, %User{ap_id: followed_id}, activity_id) do
	data = %{
	"type" => "Follow",
	"actor" => follower_id,
	"to" => [followed_id],
	"cc" => ["https://www.w3.org/ns/activitystreams#Public"],
	"object" => followed_id
	}

	if activity_id, do: Map.put(data, "id", activity_id), else: data
	end

	def fetch_latest_follow(%User{ap_id: follower_id}, %User{ap_id: followed_id}) do
	query =
	from(
	activity in Activity,
	where:
	fragment(
	"? @> ?",
	activity.data,
	^%{type: "Follow", actor: follower_id, object: followed_id}
	),
	order_by: [desc: :id],
	limit: 1
	)

	Repo.one(query)
	end

	#### Announce-related helpers

	@doc """
	Retruns an existing announce activity if the notice has already been announced
	"""
	def get_existing_announce(actor, %{data: %{"id" => id}}) do
	query =
	from(
	activity in Activity,
	where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
	# this is to use the index
	where:
	fragment(
	"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
	activity.data,
	activity.data,
	^id
	),
	where: fragment("(?)->>'type' = 'Announce'", activity.data)
	)

	Repo.one(query)
	end

	@doc """
	Make announce activity data for the given actor and object
	"""
	def make_announce_data(
	%User{ap_id: ap_id} = user,
	%Object{data: %{"id" => id}} = object,
	activity_id
	) do
	data = %{
	"type" => "Announce",
	"actor" => ap_id,
	"object" => id,
	"to" => [user.follower_address, object.data["actor"]],
	"cc" => ["https://www.w3.org/ns/activitystreams#Public"],
	"context" => object.data["context"]
	}

	if activity_id, do: Map.put(data, "id", activity_id), else: data
	end

	@doc """
	Make unannounce activity data for the given actor and object
	"""
	def make_unannounce_data(
	%User{ap_id: ap_id} = user,
	%Activity{data: %{"context" => context}} = activity,
	activity_id
	) do
	data = %{
	"type" => "Undo",
	"actor" => ap_id,
	"object" => activity.data,
	"to" => [user.follower_address, activity.data["actor"]],
	"cc" => ["https://www.w3.org/ns/activitystreams#Public"],
	"context" => context
	}

	if activity_id, do: Map.put(data, "id", activity_id), else: data
	end

	def add_announce_to_object(%Activity{data: %{"actor" => actor}}, object) do
	with announcements <- [actor \| object.data["announcements"] \|\| []] \|> Enum.uniq() do
	update_element_in_object("announcement", announcements, object)
	end
	end

	def remove_announce_from_object(%Activity{data: %{"actor" => actor}}, object) do
	with announcements <- (object.data["announcements"] \|\| []) \|> List.delete(actor) do
	update_element_in_object("announcement", announcements, object)
	end
	end

	#### Unfollow-related helpers

	def make_unfollow_data(follower, followed, follow_activity) do
	%{
	"type" => "Undo",
	"actor" => follower.ap_id,
	"to" => [followed.ap_id],
	"object" => follow_activity.data["id"]
	}
	end

	#### Block-related helpers
	def fetch_latest_block(%User{ap_id: blocker_id}, %User{ap_id: blocked_id}) do
	query =
	from(
	activity in Activity,
	where:
	fragment(
	"? @> ?",
	activity.data,
	^%{type: "Block", actor: blocker_id, object: blocked_id}
	),
	order_by: [desc: :id],
	limit: 1
	)

	Repo.one(query)
	end

	def make_block_data(blocker, blocked) do
	%{
	"type" => "Block",
	"actor" => blocker.ap_id,
	"to" => [blocked.ap_id],
	"object" => blocked.ap_id
	}
	end

	def make_unblock_data(blocker, blocked, block_activity) do
	%{
	"type" => "Undo",
	"actor" => blocker.ap_id,
	"to" => [blocked.ap_id],
	"object" => block_activity.data
	}
	end
	+
	#### Create-related helpers

	def make_create_data(params, additional) do
	published = params.published \|\| make_date()

	%{
	"type" => "Create",
	"to" => params.to \|> Enum.uniq(),
	"actor" => params.actor.ap_id,
	"object" => params.object,
	"published" => published,
	"context" => params.context
	}
	\|> Map.merge(additional)
	end
	end
	diff --git a/test/fixtures/mastodon-block-activity.json b/test/fixtures/mastodon-block-activity.json
	new file mode 100644
	index 000000000..186719d2c
	--- /dev/null
	+++ b/test/fixtures/mastodon-block-activity.json
	@@ -0,0 +1,29 @@
	+{
	+ "type": "Block",
	+ "signature": {
	+ "type": "RsaSignature2017",
	+ "signatureValue": "Kn1/UkAQGJVaXBfWLAHcnwHg8YMAUqlEaBuYLazAG+pz5hqivsyrBmPV186Xzr+B4ZLExA9+SnOoNx/GOz4hBm0kAmukNSILAsUd84tcJ2yT9zc1RKtembK4WiwOw7li0+maeDN0HaB6t+6eTqsCWmtiZpprhXD8V1GGT8yG7X24fQ9oFGn+ng7lasbcCC0988Y1eGqNe7KryxcPuQz57YkDapvtONzk8gyLTkZMV4De93MyRHq6GVjQVIgtiYabQAxrX6Q8C+4P/jQoqdWJHEe+MY5JKyNaT/hMPt2Md1ok9fZQBGHlErk22/zy8bSN19GdG09HmIysBUHRYpBLig==",
	+ "creator": "http://mastodon.example.org/users/admin#main-key",
	+ "created": "2018-02-17T13:29:31Z"
	+ },
	+ "object": "http://localtesting.pleroma.lol/users/lain",
	+ "nickname": "lain",
	+ "id": "http://mastodon.example.org/users/admin#follows/2",
	+ "actor": "http://mastodon.example.org/users/admin",
	+ "@context": [
	+ "https://www.w3.org/ns/activitystreams",
	+ "https://w3id.org/security/v1",
	+ {
	+ "toot": "http://joinmastodon.org/ns#",
	+ "sensitive": "as:sensitive",
	+ "ostatus": "http://ostatus.org#",
	+ "movedTo": "as:movedTo",
	+ "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
	+ "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
	+ "conversation": "ostatus:conversation",
	+ "atomUri": "ostatus:atomUri",
	+ "Hashtag": "as:Hashtag",
	+ "Emoji": "toot:Emoji"
	+ }
	+ ]
	+}
	diff --git a/test/fixtures/mastodon-unblock-activity.json b/test/fixtures/mastodon-unblock-activity.json
	new file mode 100644
	index 000000000..53b2f42a8
	--- /dev/null
	+++ b/test/fixtures/mastodon-unblock-activity.json
	@@ -0,0 +1,33 @@
	+{
	+ "@context": [
	+ "https://www.w3.org/ns/activitystreams",
	+ "https://w3id.org/security/v1",
	+ {
	+ "toot": "http://joinmastodon.org/ns#",
	+ "sensitive": "as:sensitive",
	+ "ostatus": "http://ostatus.org#",
	+ "movedTo": "as:movedTo",
	+ "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
	+ "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
	+ "conversation": "ostatus:conversation",
	+ "atomUri": "ostatus:atomUri",
	+ "Hashtag": "as:Hashtag",
	+ "Emoji": "toot:Emoji"
	+ }
	+ ],
	+ "signature": {
	+ "type": "RsaSignature2017",
	+ "signatureValue": "Kn1/UkAQGJVaXBfWLAHcnwHg8YMAUqlEaBuYLazAG+pz5hqivsyrBmPV186Xzr+B4ZLExA9+SnOoNx/GOz4hBm0kAmukNSILAsUd84tcJ2yT9zc1RKtembK4WiwOw7li0+maeDN0HaB6t+6eTqsCWmtiZpprhXD8V1GGT8yG7X24fQ9oFGn+ng7lasbcCC0988Y1eGqNe7KryxcPuQz57YkDapvtONzk8gyLTkZMV4De93MyRHq6GVjQVIgtiYabQAxrX6Q8C+4P/jQoqdWJHEe+MY5JKyNaT/hMPt2Md1ok9fZQBGHlErk22/zy8bSN19GdG09HmIysBUHRYpBLig==",
	+ "creator": "http://mastodon.example.org/users/admin#main-key",
	+ "created": "2018-02-17T13:29:31Z"
	+ },
	+ "type": "Undo",
	+ "object": {
	+ "type": "Block",
	+ "object": "http://localtesting.pleroma.lol/users/lain",
	+ "nickname": "lain",
	+ "id": "http://mastodon.example.org/users/admin#follows/2",
	+ "actor": "http://mastodon.example.org/users/admin"
	+ },
	+ "actor": "http://mastodon.example.org/users/admin"
	+}
	diff --git a/test/web/activity_pub/transmogrifier_test.exs b/test/web/activity_pub/transmogrifier_test.exs
	index 8ed7147f4..0ca00a07e 100644
	--- a/test/web/activity_pub/transmogrifier_test.exs
	+++ b/test/web/activity_pub/transmogrifier_test.exs
	@@ -1,447 +1,493 @@
	defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
	use Pleroma.DataCase
	alias Pleroma.Web.ActivityPub.Transmogrifier
	alias Pleroma.Web.OStatus
	alias Pleroma.Activity
	alias Pleroma.User
	alias Pleroma.Repo
	alias Pleroma.Web.Websub.WebsubClientSubscription
	alias Pleroma.Web.Websub.WebsubServerSubscription
	import Ecto.Query

	import Pleroma.Factory
	alias Pleroma.Web.CommonAPI

	describe "handle_incoming" do
	test "it ignores an incoming notice if we already have it" do
	activity = insert(:note_activity)

	data =
	File.read!("test/fixtures/mastodon-post-activity.json")
	\|> Poison.decode!()
	\|> Map.put("object", activity.data["object"])

	{:ok, returned_activity} = Transmogrifier.handle_incoming(data)

	assert activity == returned_activity
	end

	test "it fetches replied-to activities if we don't have them" do
	data =
	File.read!("test/fixtures/mastodon-post-activity.json")
	\|> Poison.decode!()

	object =
	data["object"]
	\|> Map.put("inReplyTo", "https://shitposter.club/notice/2827873")

	data =
	data
	\|> Map.put("object", object)

	{:ok, returned_activity} = Transmogrifier.handle_incoming(data)

	assert activity =
	Activity.get_create_activity_by_object_ap_id(
	"tag:shitposter.club,2017-05-05:noticeId=2827873:objectType=comment"
	)

	assert returned_activity.data["object"]["inReplyToAtomUri"] ==
	"https://shitposter.club/notice/2827873"

	assert returned_activity.data["object"]["inReplyToStatusId"] == activity.id
	end

	test "it works for incoming notices" do
	data = File.read!("test/fixtures/mastodon-post-activity.json") \|> Poison.decode!()

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["id"] ==
	"http://mastodon.example.org/users/admin/statuses/99512778738411822/activity"

	assert data["context"] ==
	"tag:mastodon.example.org,2018-02-12:objectId=20:objectType=Conversation"

	assert data["to"] == ["https://www.w3.org/ns/activitystreams#Public"]

	assert data["cc"] == [
	"http://mastodon.example.org/users/admin/followers",
	"http://localtesting.pleroma.lol/users/lain"
	]

	assert data["actor"] == "http://mastodon.example.org/users/admin"

	object = data["object"]
	assert object["id"] == "http://mastodon.example.org/users/admin/statuses/99512778738411822"

	assert object["to"] == ["https://www.w3.org/ns/activitystreams#Public"]

	assert object["cc"] == [
	"http://mastodon.example.org/users/admin/followers",
	"http://localtesting.pleroma.lol/users/lain"
	]

	assert object["actor"] == "http://mastodon.example.org/users/admin"
	assert object["attributedTo"] == "http://mastodon.example.org/users/admin"

	assert object["context"] ==
	"tag:mastodon.example.org,2018-02-12:objectId=20:objectType=Conversation"

	assert object["sensitive"] == true

	user = User.get_by_ap_id(object["actor"])

	assert user.info["note_count"] == 1
	end

	test "it works for incoming notices with hashtags" do
	data = File.read!("test/fixtures/mastodon-post-activity-hashtag.json") \|> Poison.decode!()

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
	assert Enum.at(data["object"]["tag"], 2) == "moo"
	end

	test "it works for incoming follow requests" do
	user = insert(:user)

	data =
	File.read!("test/fixtures/mastodon-follow-activity.json")
	\|> Poison.decode!()
	\|> Map.put("object", user.ap_id)

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["actor"] == "http://mastodon.example.org/users/admin"
	assert data["type"] == "Follow"
	assert data["id"] == "http://mastodon.example.org/users/admin#follows/2"
	assert User.following?(User.get_by_ap_id(data["actor"]), user)
	end

	test "it works for incoming likes" do
	user = insert(:user)
	{:ok, activity} = CommonAPI.post(user, %{"status" => "hello"})

	data =
	File.read!("test/fixtures/mastodon-like.json")
	\|> Poison.decode!()
	\|> Map.put("object", activity.data["object"]["id"])

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["actor"] == "http://mastodon.example.org/users/admin"
	assert data["type"] == "Like"
	assert data["id"] == "http://mastodon.example.org/users/admin#likes/2"
	assert data["object"] == activity.data["object"]["id"]
	end

	test "it works for incoming announces" do
	data = File.read!("test/fixtures/mastodon-announce.json") \|> Poison.decode!()

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["actor"] == "http://mastodon.example.org/users/admin"
	assert data["type"] == "Announce"

	assert data["id"] ==
	"http://mastodon.example.org/users/admin/statuses/99542391527669785/activity"

	assert data["object"] ==
	"http://mastodon.example.org/users/admin/statuses/99541947525187367"

	assert Activity.get_create_activity_by_object_ap_id(data["object"])
	end

	test "it works for incoming announces with an existing activity" do
	user = insert(:user)
	{:ok, activity} = CommonAPI.post(user, %{"status" => "hey"})

	data =
	File.read!("test/fixtures/mastodon-announce.json")
	\|> Poison.decode!()
	\|> Map.put("object", activity.data["object"]["id"])

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["actor"] == "http://mastodon.example.org/users/admin"
	assert data["type"] == "Announce"

	assert data["id"] ==
	"http://mastodon.example.org/users/admin/statuses/99542391527669785/activity"

	assert data["object"] == activity.data["object"]["id"]

	assert Activity.get_create_activity_by_object_ap_id(data["object"]).id == activity.id
	end

	test "it works for incoming update activities" do
	data = File.read!("test/fixtures/mastodon-post-activity.json") \|> Poison.decode!()

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
	update_data = File.read!("test/fixtures/mastodon-update.json") \|> Poison.decode!()

	object =
	update_data["object"]
	\|> Map.put("actor", data["actor"])
	\|> Map.put("id", data["actor"])

	update_data =
	update_data
	\|> Map.put("actor", data["actor"])
	\|> Map.put("object", object)

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(update_data)

	user = User.get_cached_by_ap_id(data["actor"])
	assert user.name == "gargle"

	assert user.avatar["url"] == [
	%{
	"href" =>
	"https://cd.niu.moe/accounts/avatars/000/033/323/original/fd7f8ae0b3ffedc9.jpeg"
	}
	]

	assert user.info["banner"]["url"] == [
	%{
	"href" =>
	"https://cd.niu.moe/accounts/headers/000/033/323/original/850b3448fa5fd477.png"
	}
	]

	assert user.bio == "<p>Some bio</p>"
	end

	test "it works for incoming deletes" do
	activity = insert(:note_activity)

	data =
	File.read!("test/fixtures/mastodon-delete.json")
	\|> Poison.decode!()

	object =
	data["object"]
	\|> Map.put("id", activity.data["object"]["id"])

	data =
	data
	\|> Map.put("object", object)
	\|> Map.put("actor", activity.data["actor"])

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	refute Repo.get(Activity, activity.id)
	end

	test "it works for incoming unannounces with an existing notice" do
	user = insert(:user)
	{:ok, activity} = CommonAPI.post(user, %{"status" => "hey"})

	announce_data =
	File.read!("test/fixtures/mastodon-announce.json")
	\|> Poison.decode!()
	\|> Map.put("object", activity.data["object"]["id"])

	{:ok, %Activity{data: announce_data, local: false}} =
	Transmogrifier.handle_incoming(announce_data)

	data =
	File.read!("test/fixtures/mastodon-undo-announce.json")
	\|> Poison.decode!()
	\|> Map.put("object", announce_data)
	\|> Map.put("actor", announce_data["actor"])

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["type"] == "Undo"
	assert data["object"]["type"] == "Announce"
	assert data["object"]["object"] == activity.data["object"]["id"]

	assert data["object"]["id"] ==
	"http://mastodon.example.org/users/admin/statuses/99542391527669785/activity"
	end

	test "it works for incomming unfollows" do
	user = insert(:user)

	follow_data =
	File.read!("test/fixtures/mastodon-follow-activity.json")
	\|> Poison.decode!()
	\|> Map.put("object", user.ap_id)

	{:ok, %Activity{data: _, local: false}} = Transmogrifier.handle_incoming(follow_data)

	data =
	File.read!("test/fixtures/mastodon-unfollow-activity.json")
	\|> Poison.decode!()
	\|> Map.put("object", follow_data)

	{:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)

	assert data["type"] == "Undo"
	assert data["object"]["type"] == "Follow"
	+ assert data["object"]["object"] == user.ap_id
	assert data["actor"] == "http://mastodon.example.org/users/admin"

	refute User.following?(User.get_by_ap_id(data["actor"]), user)
	end
	+
	+ test "it works for incoming blocks" do
	+ user = insert(:user)
	+
	+ data =
	+ File.read!("test/fixtures/mastodon-block-activity.json")
	+ \|> Poison.decode!()
	+ \|> Map.put("object", user.ap_id)
	+
	+ {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
	+
	+ assert data["type"] == "Block"
	+ assert data["object"] == user.ap_id
	+ assert data["actor"] == "https://mastodon.example.org/users/admin"
	+
	+ blocker = User.get_by_ap_id(data["actor"])
	+
	+ assert User.blocks?(blocker, user.ap_id)
	+ end
	+
	+ test "it works for incoming unblocks" do
	+ user = insert(:user)
	+
	+ block_data =
	+ File.read!("test/fixtures/mastodon-block-activity.json")
	+ \|> Poison.decode!()
	+ \|> Map.put("object", user.ap_id)
	+
	+ {:ok, %Activity{data: _, local: false}} = Transmogrifier.handle_incoming(block_data)
	+
	+ data =
	+ File.read!("test/fixtures/mastodon-unblock-activity.json")
	+ \|> Poison.decode!()
	+ \|> Map.put("object", block_data)
	+
	+ {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
	+ assert data["type"] == "Undo"
	+ assert data["object"]["type"] == "Block"
	+ assert data["object"]["object"] == user.ap_id
	+ assert data["actor"] == "https://mastodon.example.org/users/admin"
	+
	+ blocker = User.get_by_ap_id(data["actor"])
	+
	+ refute User.blocks?(blocker, user.ap_id)
	+ end
	end

	describe "prepare outgoing" do
	test "it turns mentions into tags" do
	user = insert(:user)
	other_user = insert(:user)

	{:ok, activity} =
	CommonAPI.post(user, %{"status" => "hey, @#{other_user.nickname}, how are ya? #2hu"})

	{:ok, modified} = Transmogrifier.prepare_outgoing(activity.data)
	object = modified["object"]

	expected_mention = %{
	"href" => other_user.ap_id,
	"name" => "@#{other_user.nickname}",
	"type" => "Mention"
	}

	expected_tag = %{
	"href" => Pleroma.Web.Endpoint.url() <> "/tags/2hu",
	"type" => "Hashtag",
	"name" => "#2hu"
	}

	assert Enum.member?(object["tag"], expected_tag)
	assert Enum.member?(object["tag"], expected_mention)
	end

	test "it adds the sensitive property" do
	user = insert(:user)

	{:ok, activity} = CommonAPI.post(user, %{"status" => "#nsfw hey"})
	{:ok, modified} = Transmogrifier.prepare_outgoing(activity.data)

	assert modified["object"]["sensitive"]
	end

	test "it adds the json-ld context and the conversation property" do
	user = insert(:user)

	{:ok, activity} = CommonAPI.post(user, %{"status" => "hey"})
	{:ok, modified} = Transmogrifier.prepare_outgoing(activity.data)

	assert modified["@context"] == "https://www.w3.org/ns/activitystreams"
	assert modified["object"]["conversation"] == modified["context"]
	end

	test "it sets the 'attributedTo' property to the actor of the object if it doesn't have one" do
	user = insert(:user)

	{:ok, activity} = CommonAPI.post(user, %{"status" => "hey"})
	{:ok, modified} = Transmogrifier.prepare_outgoing(activity.data)

	assert modified["object"]["actor"] == modified["object"]["attributedTo"]
	end

	test "it translates ostatus IDs to external URLs" do
	incoming = File.read!("test/fixtures/incoming_note_activity.xml")
	{:ok, [referent_activity]} = OStatus.handle_incoming(incoming)

	user = insert(:user)

	{:ok, activity, _} = CommonAPI.favorite(referent_activity.id, user)
	{:ok, modified} = Transmogrifier.prepare_outgoing(activity.data)

	assert modified["object"] == "http://gs.example.org:4040/index.php/notice/29"
	end

	test "it translates ostatus reply_to IDs to external URLs" do
	incoming = File.read!("test/fixtures/incoming_note_activity.xml")
	{:ok, [referred_activity]} = OStatus.handle_incoming(incoming)

	user = insert(:user)

	{:ok, activity} =
	CommonAPI.post(user, %{"status" => "HI!", "in_reply_to_status_id" => referred_activity.id})

	{:ok, modified} = Transmogrifier.prepare_outgoing(activity.data)

	assert modified["object"]["inReplyTo"] == "http://gs.example.org:4040/index.php/notice/29"
	end
	end

	describe "user upgrade" do
	test "it upgrades a user to activitypub" do
	user =
	insert(:user, %{
	nickname: "rye@niu.moe",
	local: false,
	ap_id: "https://niu.moe/users/rye",
	follower_address: User.ap_followers(%User{nickname: "rye@niu.moe"})
	})

	user_two = insert(:user, %{following: [user.follower_address]})

	{:ok, activity} = CommonAPI.post(user, %{"status" => "test"})
	{:ok, unrelated_activity} = CommonAPI.post(user_two, %{"status" => "test"})
	assert "http://localhost:4001/users/rye@niu.moe/followers" in activity.recipients

	user = Repo.get(User, user.id)
	assert user.info["note_count"] == 1

	{:ok, user} = Transmogrifier.upgrade_user_from_ap_id("https://niu.moe/users/rye")
	assert user.info["ap_enabled"]
	assert user.info["note_count"] == 1
	assert user.follower_address == "https://niu.moe/users/rye/followers"

	# Wait for the background task
	:timer.sleep(1000)

	user = Repo.get(User, user.id)
	assert user.info["note_count"] == 1

	activity = Repo.get(Activity, activity.id)
	assert user.follower_address in activity.recipients

	assert %{
	"url" => [
	%{
	"href" =>
	"https://cdn.niu.moe/accounts/avatars/000/033/323/original/fd7f8ae0b3ffedc9.jpeg"
	}
	]
	} = user.avatar

	assert %{
	"url" => [
	%{
	"href" =>
	"https://cdn.niu.moe/accounts/headers/000/033/323/original/850b3448fa5fd477.png"
	}
	]
	} = user.info["banner"]

	refute "..." in activity.recipients

	unrelated_activity = Repo.get(Activity, unrelated_activity.id)
	refute user.follower_address in unrelated_activity.recipients

	user_two = Repo.get(User, user_two.id)
	assert user.follower_address in user_two.following
	refute "..." in user_two.following
	end
	end

	describe "maybe_retire_websub" do
	test "it deletes all websub client subscripitions with the user as topic" do
	subscription = %WebsubClientSubscription{topic: "https://niu.moe/users/rye.atom"}
	{:ok, ws} = Repo.insert(subscription)

	subscription = %WebsubClientSubscription{topic: "https://niu.moe/users/pasty.atom"}
	{:ok, ws2} = Repo.insert(subscription)

	Transmogrifier.maybe_retire_websub("https://niu.moe/users/rye")

	refute Repo.get(WebsubClientSubscription, ws.id)
	assert Repo.get(WebsubClientSubscription, ws2.id)
	end
	end
	end

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