defmodule Mobilizon.Federation.ActivityPub.Actions.Leave do @moduledoc """ Leave things """ alias Mobilizon.{Actors, Events} alias Mobilizon.Actors.{Actor, Member} alias Mobilizon.Events.{Event, Participant} alias Mobilizon.Federation.ActivityPub.Audience alias Mobilizon.Web.Endpoint require Logger import Mobilizon.Federation.ActivityPub.Utils, only: [ create_activity: 2, maybe_federate: 1, maybe_relay_if_group_activity: 1 ] @spec leave(Event.t(), Actor.t(), boolean, map) :: {:ok, Activity.t(), Participant.t()} | {:error, :is_only_organizer | :participant_not_found | Ecto.Changeset.t()} @spec leave(Actor.t(), Actor.t(), boolean, map) :: {:ok, Activity.t(), Member.t()} | {:error, :is_not_only_admin | :member_not_found | Ecto.Changeset.t()} def leave(object, actor, local \\ true, additional \\ %{}) @doc """ Leave an event or a group """ def leave( %Event{id: event_id, url: event_url} = _event, %Actor{id: actor_id, url: actor_url} = _actor, local, additional ) do if Participant.is_not_only_organizer(event_id, actor_id) do {:error, :is_only_organizer} else case Mobilizon.Events.get_participant( event_id, actor_id, Map.get(additional, :metadata, %{}) ) do {:ok, %Participant{} = participant} -> case Events.delete_participant(participant) do {:ok, %{participant: %Participant{} = participant}} -> leave_data = %{ "type" => "Leave", # If it's an exclusion it should be something else "actor" => actor_url, "object" => event_url, "id" => "#{Endpoint.url()}/leave/event/#{participant.id}" } audience = Audience.get_audience(participant) {:ok, activity} = create_activity(Map.merge(leave_data, audience), local) maybe_federate(activity) {:ok, activity, participant} {:error, _type, %Ecto.Changeset{} = err, _} -> {:error, err} end {:error, :participant_not_found} -> {:error, :participant_not_found} end end end def leave( %Actor{type: :Group, id: group_id, url: group_url, members_url: group_members_url}, %Actor{id: actor_id, url: actor_url}, local, additional ) do case Actors.get_member(actor_id, group_id) do {:ok, %Member{id: member_id} = member} -> if Map.get(additional, :force_member_removal, false) || !Actors.is_only_administrator?(member_id, group_id) do with {:ok, %Member{} = member} <- Actors.delete_member(member) do Mobilizon.Service.Activity.Member.insert_activity(member, subject: "member_quit") leave_data = %{ "to" => [group_members_url], "cc" => [group_url], "attributedTo" => group_url, "type" => "Leave", "actor" => actor_url, "object" => group_url } {:ok, activity} = create_activity(leave_data, local) maybe_federate(activity) maybe_relay_if_group_activity(activity) {:ok, activity, member} end else {:error, :is_not_only_admin} end {:error, :member_not_found} -> nil end end end