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diff --git a/lib/pleroma/web/activity_pub/side_effects.ex b/lib/pleroma/web/activity_pub/side_effects.ex
index 992c04ac1..e7d050e81 100644
--- a/lib/pleroma/web/activity_pub/side_effects.ex
+++ b/lib/pleroma/web/activity_pub/side_effects.ex
@@ -1,202 +1,203 @@
defmodule Pleroma.Web.ActivityPub.SideEffects do
@moduledoc """
This module looks at an inserted object and executes the side effects that it
implies. For example, a `Like` activity will increase the like count on the
liked object, a `Follow` activity will add the user to the follower
collection, and so on.
"""
alias Pleroma.Activity
alias Pleroma.Chat
alias Pleroma.ChatMessageReference
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Pipeline
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.Streamer
def handle(object, meta \\ [])
# Tasks this handles:
# - Add like to object
# - Set up notification
def handle(%{data: %{"type" => "Like"}} = object, meta) do
liked_object = Object.get_by_ap_id(object.data["object"])
Utils.add_like_to_object(object, liked_object)
Notification.create_notifications(object)
{:ok, object, meta}
end
# Tasks this handles
# - Actually create object
# - Rollback if we couldn't create it
# - Set up notifications
def handle(%{data: %{"type" => "Create"}} = activity, meta) do
with {:ok, _object, _meta} <- handle_object_creation(meta[:object_data], meta) do
Notification.create_notifications(activity)
{:ok, activity, meta}
else
e -> Repo.rollback(e)
end
end
# Tasks this handles:
# - Add announce to object
# - Set up notification
# - Stream out the announce
def handle(%{data: %{"type" => "Announce"}} = object, meta) do
announced_object = Object.get_by_ap_id(object.data["object"])
user = User.get_cached_by_ap_id(object.data["actor"])
Utils.add_announce_to_object(object, announced_object)
if !User.is_internal_user?(user) do
Notification.create_notifications(object)
ActivityPub.stream_out(object)
end
{:ok, object, meta}
end
def handle(%{data: %{"type" => "Undo", "object" => undone_object}} = object, meta) do
with undone_object <- Activity.get_by_ap_id(undone_object),
:ok <- handle_undoing(undone_object) do
{:ok, object, meta}
end
end
# Tasks this handles:
# - Add reaction to object
# - Set up notification
def handle(%{data: %{"type" => "EmojiReact"}} = object, meta) do
reacted_object = Object.get_by_ap_id(object.data["object"])
Utils.add_emoji_reaction_to_object(object, reacted_object)
Notification.create_notifications(object)
{:ok, object, meta}
end
# Tasks this handles:
# - Delete and unpins the create activity
# - Replace object with Tombstone
# - Set up notification
# - Reduce the user note count
# - Reduce the reply count
# - Stream out the activity
def handle(%{data: %{"type" => "Delete", "object" => deleted_object}} = object, meta) do
deleted_object =
Object.normalize(deleted_object, false) || User.get_cached_by_ap_id(deleted_object)
result =
case deleted_object do
%Object{} ->
with {:ok, deleted_object, activity} <- Object.delete(deleted_object),
%User{} = user <- User.get_cached_by_ap_id(deleted_object.data["actor"]) do
User.remove_pinnned_activity(user, activity)
{:ok, user} = ActivityPub.decrease_note_count_if_public(user, deleted_object)
if in_reply_to = deleted_object.data["inReplyTo"] do
Object.decrease_replies_count(in_reply_to)
end
ChatMessageReference.delete_for_object(deleted_object)
ActivityPub.stream_out(object)
ActivityPub.stream_out_participations(deleted_object, user)
:ok
end
%User{} ->
with {:ok, _} <- User.delete(deleted_object) do
:ok
end
end
if result == :ok do
Notification.create_notifications(object)
{:ok, object, meta}
else
{:error, result}
end
end
# Nothing to do
def handle(object, meta) do
{:ok, object, meta}
end
def handle_object_creation(%{"type" => "ChatMessage"} = object, meta) do
with {:ok, object, meta} <- Pipeline.common_pipeline(object, meta) do
actor = User.get_cached_by_ap_id(object.data["actor"])
recipient = User.get_cached_by_ap_id(hd(object.data["to"]))
[[actor, recipient], [recipient, actor]]
|> Enum.each(fn [user, other_user] ->
if user.local do
{:ok, chat} = Chat.bump_or_create(user.id, other_user.ap_id)
{:ok, cm_ref} = ChatMessageReference.create(chat, object, user.ap_id != actor.ap_id)
- # We add a cache of the unread value here so that it doesn't change when being streamed out
+ # We add a cache of the unread value here so that it
+ # doesn't change when being streamed out
chat =
chat
|> Map.put(:unread, ChatMessageReference.unread_count_for_chat(chat))
Streamer.stream(
["user", "user:pleroma_chat"],
{user, %{cm_ref | chat: chat, object: object}}
)
end
end)
{:ok, object, meta}
end
end
# Nothing to do
def handle_object_creation(object) do
{:ok, object}
end
def handle_undoing(%{data: %{"type" => "Like"}} = object) do
with %Object{} = liked_object <- Object.get_by_ap_id(object.data["object"]),
{:ok, _} <- Utils.remove_like_from_object(object, liked_object),
{:ok, _} <- Repo.delete(object) do
:ok
end
end
def handle_undoing(%{data: %{"type" => "EmojiReact"}} = object) do
with %Object{} = reacted_object <- Object.get_by_ap_id(object.data["object"]),
{:ok, _} <- Utils.remove_emoji_reaction_from_object(object, reacted_object),
{:ok, _} <- Repo.delete(object) do
:ok
end
end
def handle_undoing(%{data: %{"type" => "Announce"}} = object) do
with %Object{} = liked_object <- Object.get_by_ap_id(object.data["object"]),
{:ok, _} <- Utils.remove_announce_from_object(object, liked_object),
{:ok, _} <- Repo.delete(object) do
:ok
end
end
def handle_undoing(
%{data: %{"type" => "Block", "actor" => blocker, "object" => blocked}} = object
) do
with %User{} = blocker <- User.get_cached_by_ap_id(blocker),
%User{} = blocked <- User.get_cached_by_ap_id(blocked),
{:ok, _} <- User.unblock(blocker, blocked),
{:ok, _} <- Repo.delete(object) do
:ok
end
end
def handle_undoing(object), do: {:error, ["don't know how to handle", object]}
end
diff --git a/lib/pleroma/web/views/streamer_view.ex b/lib/pleroma/web/views/streamer_view.ex
index b000e7ce0..476a33245 100644
--- a/lib/pleroma/web/views/streamer_view.ex
+++ b/lib/pleroma/web/views/streamer_view.ex
@@ -1,89 +1,89 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.StreamerView do
use Pleroma.Web, :view
alias Pleroma.Activity
alias Pleroma.Conversation.Participation
alias Pleroma.Notification
alias Pleroma.User
alias Pleroma.Web.MastodonAPI.NotificationView
def render("update.json", %Activity{} = activity, %User{} = user) do
%{
event: "update",
payload:
Pleroma.Web.MastodonAPI.StatusView.render(
"show.json",
activity: activity,
for: user
)
|> Jason.encode!()
}
|> Jason.encode!()
end
def render("notification.json", %Notification{} = notify, %User{} = user) do
%{
event: "notification",
payload:
NotificationView.render(
"show.json",
%{notification: notify, for: user}
)
|> Jason.encode!()
}
|> Jason.encode!()
end
def render("update.json", %Activity{} = activity) do
%{
event: "update",
payload:
Pleroma.Web.MastodonAPI.StatusView.render(
"show.json",
activity: activity
)
|> Jason.encode!()
}
|> Jason.encode!()
end
def render("chat_update.json", %{chat_message_reference: cm_ref}) do
# Explicitly giving the cmr for the object here, so we don't accidentally
# send a later 'last_message' that was inserted between inserting this and
# streaming it out
- #
+ #
# It also contains the chat with a cache of the correct unread count
Logger.debug("Trying to stream out #{inspect(cm_ref)}")
representation =
Pleroma.Web.PleromaAPI.ChatView.render(
"show.json",
%{last_message: cm_ref, chat: cm_ref.chat}
)
%{
event: "pleroma:chat_update",
payload:
representation
|> Jason.encode!()
}
|> Jason.encode!()
end
def render("conversation.json", %Participation{} = participation) do
%{
event: "conversation",
payload:
Pleroma.Web.MastodonAPI.ConversationView.render("participation.json", %{
participation: participation,
for: participation.user
})
|> Jason.encode!()
}
|> Jason.encode!()
end
end

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