forked from potsda.mn/mobilizon
306 lines
10 KiB
Elixir
306 lines
10 KiB
Elixir
defmodule Mobilizon.Service.ActorSuspension do
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@moduledoc """
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Handle actor suspensions
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"""
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alias Ecto.Multi
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alias Mobilizon.{Actors, Events, Medias, Users}
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alias Mobilizon.Actors.{Actor, Member}
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alias Mobilizon.Discussions.{Comment, Discussion}
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alias Mobilizon.Events.{Event, Participant}
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alias Mobilizon.Medias.File
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alias Mobilizon.Posts.Post
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alias Mobilizon.Resources.Resource
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alias Mobilizon.Service.ErrorReporting.Sentry
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alias Mobilizon.Service.Export.Cachable
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alias Mobilizon.Storage.Repo
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alias Mobilizon.Users.User
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alias Mobilizon.Web.Email.Actor, as: ActorEmail
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alias Mobilizon.Web.Email.Group
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require Logger
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import Ecto.Query
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@actor_preloads [:user, :organized_events, :participations, :comments]
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@delete_actor_default_options [reserve_username: true, suspension: false]
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@valid_actor_types [:Person, :Group]
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@doc """
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Deletes an actor.
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"""
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@spec suspend_actor(Actor.t(), Keyword.t()) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
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def suspend_actor(%Actor{} = actor, options \\ @delete_actor_default_options) do
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Logger.info("Going to delete actor #{actor.url}")
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actor = Repo.preload(actor, @actor_preloads)
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delete_actor_options = Keyword.merge(@delete_actor_default_options, options)
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Logger.debug(inspect(delete_actor_options))
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send_suspension_notification(actor)
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Logger.debug(
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"Sending suspension notifications to participants from events created by this actor"
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)
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notify_event_participants_from_suspension(actor)
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delete_participations(actor)
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multi =
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Multi.new()
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|> maybe_reset_actor_id(actor)
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|> delete_actor_empty_comments(actor)
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|> Multi.run(:remove_banner, fn _, _ -> remove_banner(actor) end)
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|> Multi.run(:remove_avatar, fn _, _ -> remove_avatar(actor) end)
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multi =
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if Keyword.get(delete_actor_options, :reserve_username, true) do
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multi
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|> delete_actor_events(actor)
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|> delete_posts(actor)
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|> delete_ressources(actor)
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|> delete_discussions(actor)
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|> delete_members(actor)
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|> Multi.update(:actor, Actor.delete_changeset(actor))
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else
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Multi.delete(multi, :actor, actor)
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end
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Logger.debug("Going to run the transaction")
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case Repo.transaction(multi, timeout: 60_000) do
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{:ok, %{actor: %Actor{} = actor}} ->
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{:ok, true} = Cachex.del(:activity_pub, "actor_#{actor.preferred_username}")
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Cachable.clear_all_caches(actor)
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Logger.info("Deleted actor #{actor.url}")
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{:ok, actor}
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{:error, remove, error, _} when remove in [:remove_banner, :remove_avatar] ->
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Logger.error("Error while deleting actor's banner or avatar")
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Sentry.capture_message("Error while deleting actor's banner or avatar",
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extra: %{err: error}
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)
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Logger.debug(inspect(error, pretty: true))
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{:error, error}
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err ->
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Logger.error("Unknown error while deleting actor")
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Sentry.capture_message("Error while deleting actor's banner or avatar",
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extra: %{err: err}
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)
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Logger.debug(inspect(err, pretty: true))
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{:error, err}
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end
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end
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# When deleting a profile, reset default_actor_id
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@spec maybe_reset_actor_id(Multi.t(), Actor.t()) :: Multi.t()
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defp maybe_reset_actor_id(%Multi{} = multi, %Actor{type: :Person} = actor) do
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Multi.run(multi, :reset_default_actor_id, fn _, _ ->
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reset_default_actor_id(actor)
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end)
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end
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defp maybe_reset_actor_id(%Multi{} = multi, %Actor{type: _} = _actor) do
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multi
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end
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defp delete_actor_empty_comments(%Multi{} = multi, %Actor{id: actor_id}) do
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now = DateTime.utc_now() |> DateTime.truncate(:second)
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Multi.update_all(multi, :empty_comments, where(Comment, [c], c.actor_id == ^actor_id),
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set: [
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text: nil,
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actor_id: nil,
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deleted_at: now
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]
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)
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end
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@spec notify_event_participants_from_suspension(Actor.t()) :: :ok
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defp notify_event_participants_from_suspension(%Actor{id: actor_id, type: actor_type} = actor)
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when actor_type in @valid_actor_types do
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actor
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|> get_actor_organizer_events_participations()
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|> preload([:actor, :event])
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|> Repo.all()
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|> Enum.filter(fn %Participant{actor: %Actor{id: participant_actor_id}} ->
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participant_actor_id != actor_id
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end)
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|> Enum.map(fn %Participant{} = participant ->
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ActorEmail.send_notification_event_participants_from_suspension(participant, actor)
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participant
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end)
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|> Enum.each(&Events.delete_participant/1)
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end
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defp notify_event_participants_from_suspension(_), do: :ok
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@spec get_actor_organizer_events_participations(Actor.t()) :: Ecto.Query.t()
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defp get_actor_organizer_events_participations(%Actor{type: :Person, id: actor_id}) do
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do_get_actor_organizer_events_participations()
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|> where([_p, e], e.organizer_actor_id == ^actor_id)
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end
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defp get_actor_organizer_events_participations(%Actor{type: :Group, id: actor_id}) do
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do_get_actor_organizer_events_participations()
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|> where([_p, e], e.attributed_to_id == ^actor_id)
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end
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@spec do_get_actor_organizer_events_participations :: Ecto.Query.t()
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defp do_get_actor_organizer_events_participations do
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Participant
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|> join(:inner, [p], e in Event, on: p.event_id == e.id)
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|> where([_p, e], e.begins_on > ^DateTime.utc_now())
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|> where([p, _e], p.role in [:participant, :moderator, :administrator])
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end
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@spec delete_actor_events(Ecto.Multi.t(), Actor.t()) :: Ecto.Multi.t()
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defp delete_actor_events(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do
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Logger.debug("Delete profile's events")
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Multi.delete_all(multi, :delete_events, where(Event, [e], e.organizer_actor_id == ^actor_id))
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end
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defp delete_actor_events(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do
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Logger.debug("Delete group's events")
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Multi.delete_all(multi, :delete_events, where(Event, [e], e.attributed_to_id == ^actor_id))
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end
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defp delete_posts(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do
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Logger.debug("Delete profile's posts")
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Multi.delete_all(multi, :delete_posts, where(Post, [e], e.author_id == ^actor_id))
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end
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defp delete_posts(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do
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Logger.debug("Delete group's posts")
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Multi.delete_all(multi, :delete_posts, where(Post, [e], e.attributed_to_id == ^actor_id))
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end
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defp delete_ressources(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do
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Logger.debug("Delete profile's resources")
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Multi.delete_all(multi, :delete_resources, where(Resource, [e], e.creator_id == ^actor_id))
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end
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defp delete_ressources(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do
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Logger.debug("Delete group's resources")
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Multi.delete_all(multi, :delete_resources, where(Resource, [e], e.actor_id == ^actor_id))
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end
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# Keep discussions just in case, comments are already emptied
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defp delete_discussions(%Multi{} = multi, %Actor{type: :Person}) do
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multi
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end
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defp delete_discussions(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do
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Logger.debug("Delete group's discussions")
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multi =
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Multi.run(multi, :group_discussion_comments, fn _, _ ->
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group_comments_ids =
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Comment
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|> join(:inner, [c], d in Discussion, on: c.discussion_id == d.id)
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|> where([_c, d], d.actor_id == ^actor_id)
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|> select([c], [c.id])
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|> Repo.all()
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|> Enum.concat()
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{:ok, group_comments_ids}
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end)
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multi =
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Multi.delete_all(
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multi,
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:delete_discussions_comments,
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fn %{group_discussion_comments: group_discussion_comments} ->
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where(Comment, [c], c.id in ^group_discussion_comments)
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end
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)
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Multi.delete_all(multi, :delete_discussions, where(Discussion, [e], e.actor_id == ^actor_id))
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end
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@spec delete_participations(Actor.t()) :: :ok
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defp delete_participations(%Actor{type: :Person} = actor) do
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Logger.debug("Delete participations from events created by this actor")
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%Actor{participations: participations} = Repo.preload(actor, [:participations])
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Enum.each(participations, &Events.delete_participant/1)
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end
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# Ignore for all other types of actors
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defp delete_participations(%Actor{}), do: :ok
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@spec delete_members(Multi.t(), Actor.t()) :: Multi.t()
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defp delete_members(%Multi{} = multi, %Actor{type: :Person, id: actor_id}) do
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Multi.delete_all(multi, :delete_members, where(Member, [e], e.actor_id == ^actor_id))
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end
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defp delete_members(%Multi{} = multi, %Actor{type: :Group, id: actor_id}) do
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Multi.delete_all(multi, :delete_members, where(Member, [e], e.parent_id == ^actor_id))
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end
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@spec reset_default_actor_id(Actor.t()) :: {:ok, User.t() | nil} | {:error, :user_not_found}
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defp reset_default_actor_id(%Actor{type: :Person, user: %User{} = user, id: actor_id}) do
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Logger.debug("reset_default_actor_id")
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new_actor =
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user
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|> Users.get_actors_for_user()
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|> Enum.find(&(&1.id !== actor_id))
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{:ok, Users.update_user_default_actor(user, new_actor)}
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rescue
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_e in Ecto.NoResultsError ->
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{:error, :user_not_found}
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end
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defp reset_default_actor_id(%Actor{type: :Person, user: nil}), do: {:ok, nil}
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@spec remove_banner(Actor.t()) :: {:ok, Actor.t()}
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defp remove_banner(%Actor{banner: nil} = actor), do: {:ok, actor}
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defp remove_banner(%Actor{banner: %File{url: url}} = actor) do
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safe_remove_file(url, actor)
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{:ok, actor}
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end
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@spec remove_avatar(Actor.t()) :: {:ok, Actor.t()}
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defp remove_avatar(%Actor{avatar: avatar} = actor) do
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case avatar do
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%File{url: url} ->
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safe_remove_file(url, actor)
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{:ok, actor}
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nil ->
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{:ok, actor}
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end
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end
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@spec safe_remove_file(String.t(), Actor.t()) :: {:ok, Actor.t()}
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defp safe_remove_file(url, %Actor{} = actor) do
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case Medias.delete_user_profile_media_by_url(url) do
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{:ok, _value} ->
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{:ok, actor}
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{:error, error} ->
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Logger.error(
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"Error while removing an upload file: #{inspect(error)}, actor: #{Actor.preferred_username_and_domain(actor)}, file_url: #{url}"
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)
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{:ok, actor}
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end
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end
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@spec send_suspension_notification(Actor.t()) :: :ok
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defp send_suspension_notification(%Actor{type: :Group} = group) do
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Logger.debug("Sending suspension notifications to group members")
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group
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|> Actors.list_all_local_members_for_group()
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|> Enum.each(&Group.send_group_suspension_notification/1)
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end
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defp send_suspension_notification(%Actor{} = _actor), do: :ok
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end
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