akkoma/lib/pleroma/web/activity_pub/side_effects.ex

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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.Chat
alias Pleroma.Notification
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alias Pleroma.Object
alias Pleroma.User
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alias Pleroma.Web.ActivityPub.Utils
def handle(object, meta \\ [])
# Tasks this handles:
# - Add like to object
# - Set up notification
def handle(%{data: %{"type" => "Like"}} = object, meta) do
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{:ok, result} =
Pleroma.Repo.transaction(fn ->
liked_object = Object.get_by_ap_id(object.data["object"])
Utils.add_like_to_object(object, liked_object)
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Notification.create_notifications(object)
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{:ok, object, meta}
end)
result
end
def handle(%{data: %{"type" => "Create"}} = activity, meta) do
object = Object.normalize(activity, false)
{:ok, _object} = handle_object_creation(object)
Notification.create_notifications(activity)
{:ok, activity, meta}
end
# Nothing to do
def handle(object, meta) do
{:ok, object, meta}
end
def handle_object_creation(%{data: %{"type" => "ChatMessage"}} = object) 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
Chat.bump_or_create(user.id, other_user.ap_id)
end
end)
{:ok, object}
end
# Nothing to do
def handle_object_creation(object) do
{:ok, object}
end
end