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mobilizon/lib/federation/activity_pub/actions/announce.ex

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defmodule Mobilizon.Federation.ActivityPub.Actions.Announce do
@moduledoc """
Announce things
"""
alias Mobilizon.Actors.Actor
alias Mobilizon.Federation.ActivityPub.Activity
alias Mobilizon.Federation.ActivityPub.Actor, as: ActivityPubActor
alias Mobilizon.Federation.ActivityStream
alias Mobilizon.Share
import Mobilizon.Federation.ActivityPub.Utils,
only: [
create_activity: 2,
maybe_federate: 1,
make_announce_data: 3,
make_announce_data: 4,
make_unannounce_data: 3
]
@doc """
Announce (reshare) an activity to the world, using an activity of type `Announce`.
"""
@spec announce(Actor.t(), ActivityStream.t(), String.t() | nil, boolean, boolean) ::
{:ok, Activity.t(), ActivityStream.t()} | {:error, any()}
def announce(
%Actor{} = actor,
object,
activity_id \\ nil,
local \\ true,
public \\ true
) do
with {:ok, %Actor{id: object_owner_actor_id}} <-
ActivityPubActor.get_or_fetch_actor_by_url(object["actor"]),
{:ok, %Share{} = _share} <- Share.create(object["id"], actor.id, object_owner_actor_id) do
announce_data = make_announce_data(actor, object, activity_id, public)
{:ok, activity} = create_activity(announce_data, local)
:ok = maybe_federate(activity)
{:ok, activity, object}
end
end
@doc """
Cancel the announcement of an activity to the world, using an activity of type `Undo` an `Announce`.
"""
@spec unannounce(Actor.t(), ActivityStream.t(), String.t() | nil, String.t() | nil, boolean) ::
{:ok, Activity.t(), ActivityStream.t()}
def unannounce(
%Actor{} = actor,
object,
activity_id \\ nil,
cancelled_activity_id \\ nil,
local \\ true
) do
announce_activity = make_announce_data(actor, object, cancelled_activity_id)
unannounce_data = make_unannounce_data(actor, announce_activity, activity_id)
{:ok, unannounce_activity} = create_activity(unannounce_data, local)
maybe_federate(unannounce_activity)
{:ok, unannounce_activity, object}
end
end