defmodule Mobilizon.Service.ActorSuspension do @moduledoc """ Handle actor suspensions """ alias Ecto.Multi alias Mobilizon.{Actors, Events, Users} alias Mobilizon.Actors.{Actor, Member} alias Mobilizon.Discussions.{Comment, Discussion} alias Mobilizon.Events.{Event, Participant} alias Mobilizon.Medias.File alias Mobilizon.Posts.Post alias Mobilizon.Resources.Resource alias Mobilizon.Storage.Repo alias Mobilizon.Users.User alias Mobilizon.Web.Email.Actor, as: ActorEmail alias Mobilizon.Web.Email.Group alias Mobilizon.Web.Upload require Logger import Ecto.Query @actor_preloads [:user, :organized_events, :comments] @delete_actor_default_options [reserve_username: true, suspension: false] @doc """ Deletes an actor. """ @spec suspend_actor(Actor.t(), Keyword.t()) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def suspend_actor(%Actor{} = actor, options \\ @delete_actor_default_options) do Logger.info("Going to delete actor #{actor.url}") actor = Repo.preload(actor, @actor_preloads) delete_actor_options = Keyword.merge(@delete_actor_default_options, options) Logger.debug(inspect(delete_actor_options)) send_suspension_notification(actor) Logger.debug( "Sending suspension notifications to participants from events created by this actor" ) notify_event_participants_from_suspension(actor) delete_participations(actor) multi = Multi.new() |> maybe_reset_actor_id(actor) |> delete_actor_empty_comments(actor) |> Multi.run(:remove_banner, fn _, _ -> remove_banner(actor) end) |> Multi.run(:remove_avatar, fn _, _ -> remove_avatar(actor) end) multi = if Keyword.get(delete_actor_options, :reserve_username, true) do multi |> delete_actor_events(actor) |> delete_posts(actor) |> delete_ressources(actor) |> delete_discussions(actor) |> delete_members(actor) |> Multi.update(:actor, Actor.delete_changeset(actor)) else Multi.delete(multi, :actor, actor) end Logger.debug("Going to run the transaction") case Repo.transaction(multi) do {:ok, %{actor: %Actor{} = actor}} -> {:ok, true} = Cachex.del(:activity_pub, "actor_#{actor.preferred_username}") Logger.info("Deleted actor #{actor.url}") {:ok, actor} {:error, remove, error, _} when remove in [:remove_banner, :remove_avatar] -> Logger.error("Error while deleting actor's banner or avatar") Sentry.capture_message("Error while deleting actor's banner or avatar", extra: %{err: error} ) Logger.debug(inspect(error, pretty: true)) {:error, error} err -> Logger.error("Unknown error while deleting actor") Sentry.capture_message("Error while deleting actor's banner or avatar", extra: %{err: err} ) Logger.debug(inspect(err, pretty: true)) {:error, err} end end # When deleting a profile, reset default_actor_id @spec maybe_reset_actor_id(Multi.t(), Actor.t()) :: Multi.t() defp maybe_reset_actor_id(%Multi{} = multi, %Actor{type: :Person} = actor) do Multi.run(multi, :reset_default_actor_id, fn _, _ -> reset_default_actor_id(actor) end) end defp maybe_reset_actor_id(%Multi{} = multi, %Actor{type: :Group} = _actor) do multi end defp delete_actor_empty_comments(%Multi{} = multi, %Actor{id: actor_id}) do now = DateTime.utc_now() |> DateTime.truncate(:second) Multi.update_all(multi, :empty_comments, where(Comment, [c], c.actor_id == ^actor_id), set: [ text: nil, actor_id: nil, deleted_at: now ] ) end @spec notify_event_participants_from_suspension(Actor.t()) :: :ok defp notify_event_participants_from_suspension(%Actor{id: actor_id} = actor) do actor |> get_actor_organizer_events_participations() |> preload([:actor, :event]) |> Repo.all() |> Enum.filter(fn %Participant{actor: %Actor{id: participant_actor_id}} -> participant_actor_id != actor_id end) |> Enum.map(fn %Participant{} = participant -> ActorEmail.send_notification_event_participants_from_suspension(participant, actor) participant end) |> Enum.each(&Events.delete_participant/1) end @spec get_actor_organizer_events_participations(Actor.t()) :: Ecto.Query.t() defp get_actor_organizer_events_participations(%Actor{type: :Person, id: actor_id}) do do_get_actor_organizer_events_participations() |> where([_p, e], e.organizer_actor_id == ^actor_id) end defp get_actor_organizer_events_participations(%Actor{type: :Group, id: actor_id}) do do_get_actor_organizer_events_participations() |> where([_p, e], e.attributed_to_id == ^actor_id) end @spec do_get_actor_organizer_events_participations :: Ecto.Query.t() defp do_get_actor_organizer_events_participations do Participant |> join(:inner, [p], e in Event, on: p.event_id == e.id) |> where([_p, e], e.begins_on > ^DateTime.utc_now()) |> where([p, _e], p.role in [:participant, :moderator, :administrator]) end @spec delete_actor_events(Ecto.Multi.t(), Actor.t()) :: Ecto.Multi.t() defp delete_actor_events(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do Logger.debug("Delete profile's events") Multi.delete_all(multi, :delete_events, where(Event, [e], e.organizer_actor_id == ^actor_id)) end defp delete_actor_events(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do Logger.debug("Delete group's events") Multi.delete_all(multi, :delete_events, where(Event, [e], e.attributed_to_id == ^actor_id)) end defp delete_posts(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do Logger.debug("Delete profile's posts") Multi.delete_all(multi, :delete_posts, where(Post, [e], e.author_id == ^actor_id)) end defp delete_posts(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do Logger.debug("Delete group's posts") Multi.delete_all(multi, :delete_posts, where(Post, [e], e.attributed_to_id == ^actor_id)) end defp delete_ressources(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do Logger.debug("Delete profile's resources") Multi.delete_all(multi, :delete_resources, where(Resource, [e], e.creator_id == ^actor_id)) end defp delete_ressources(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do Logger.debug("Delete group's resources") Multi.delete_all(multi, :delete_resources, where(Resource, [e], e.actor_id == ^actor_id)) end # Keep discussions just in case, comments are already emptied defp delete_discussions(%Multi{} = multi, %Actor{type: :Person}) do multi end defp delete_discussions(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do Logger.debug("Delete group's discussions") Multi.delete_all(multi, :delete_discussions, where(Discussion, [e], e.actor_id == ^actor_id)) end @spec delete_participations(Actor.t()) :: :ok defp delete_participations(%Actor{type: :Person} = actor) do Logger.debug("Delete participations from events created by this actor") %Actor{participations: participations} = Repo.preload(actor, [:participations]) Enum.each(participations, &Events.delete_participant/1) end defp delete_participations(%Actor{type: :Group}), do: :ok @spec delete_members(Multi.t(), Actor.t()) :: Multi.t() defp delete_members(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do Multi.delete_all(multi, :delete_members, where(Member, [e], e.actor_id == ^actor_id)) end defp delete_members(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do Multi.delete_all(multi, :delete_members, where(Member, [e], e.parent_id == ^actor_id)) end @spec reset_default_actor_id(Actor.t()) :: {:ok, User.t() | nil} | {:error, :user_not_found} defp reset_default_actor_id(%Actor{type: :Person, user: %User{} = user, id: actor_id}) do Logger.debug("reset_default_actor_id") new_actor = user |> Users.get_actors_for_user() |> Enum.find(&(&1.id !== actor_id)) {:ok, Users.update_user_default_actor(user, new_actor)} rescue _e in Ecto.NoResultsError -> {:error, :user_not_found} end defp reset_default_actor_id(%Actor{type: :Person, user: nil}), do: {:ok, nil} @spec remove_banner(Actor.t()) :: {:ok, Actor.t()} defp remove_banner(%Actor{banner: nil} = actor), do: {:ok, actor} defp remove_banner(%Actor{banner: %File{url: url}} = actor) do safe_remove_file(url, actor) {:ok, actor} end @spec remove_avatar(Actor.t()) :: {:ok, Actor.t()} defp remove_avatar(%Actor{avatar: avatar} = actor) do case avatar do %File{url: url} -> safe_remove_file(url, actor) {:ok, actor} nil -> {:ok, actor} end end @spec safe_remove_file(String.t(), Actor.t()) :: {:ok, Actor.t()} defp safe_remove_file(url, %Actor{} = actor) do case Upload.remove(url) do {:ok, _value} -> {:ok, actor} {:error, error} -> Logger.error("Error while removing an upload file") Logger.debug(inspect(error)) {:ok, actor} end end @spec send_suspension_notification(Actor.t()) :: :ok defp send_suspension_notification(%Actor{type: :Group} = group) do Logger.debug("Sending suspension notifications to group members") group |> Actors.list_all_local_members_for_group() |> Enum.each(&Group.send_group_suspension_notification/1) end defp send_suspension_notification(%Actor{} = _actor), do: :ok end