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Local copy of Pleroma, an ActivityPub server software. Contains modifications running live on fedi.underscore.world
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Activity do
use Ecto.Schema
alias Pleroma.Activity
alias Pleroma.Activity.Queries
alias Pleroma.Bookmark
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.ReportNote
alias Pleroma.ThreadMute
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
import Ecto.Changeset
import Ecto.Query
@type t :: %__MODULE__{}
@type actor :: String.t()
@primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true}
@cachex Pleroma.Config.get([:cachex, :provider], Cachex)
schema "activities" do
field(:data, :map)
field(:local, :boolean, default: true)
field(:actor, :string)
field(:recipients, {:array, :string}, default: [])
field(:thread_muted?, :boolean, virtual: true)
# A field that can be used if you need to join some kind of other
# id to order / paginate this field by
field(:pagination_id, :string, virtual: true)
# This is a fake relation,
# do not use outside of with_preloaded_user_actor/with_joined_user_actor
has_one(:user_actor, User, on_delete: :nothing, foreign_key: :id)
# This is a fake relation, do not use outside of with_preloaded_bookmark/get_bookmark
has_one(:bookmark, Bookmark)
# This is a fake relation, do not use outside of with_preloaded_report_notes
has_many(:report_notes, ReportNote)
has_many(:notifications, Notification, on_delete: :delete_all)
# Attention: this is a fake relation, don't try to preload it blindly and expect it to work!
# The foreign key is embedded in a jsonb field.
#
# To use it, you probably want to do an inner join and a preload:
#
# ```
# |> join(:inner, [activity], o in Object,
# on: fragment("(?->>'id') = COALESCE((?)->'object'->> 'id', (?)->>'object')",
# o.data, activity.data, activity.data))
# |> preload([activity, object], [object: object])
# ```
#
# As a convenience, Activity.with_preloaded_object() sets up an inner join and preload for the
# typical case.
has_one(:object, Object, on_delete: :nothing, foreign_key: :id)
timestamps()
end
def with_joined_object(query, join_type \\ :inner) do
join(query, join_type, [activity], o in Object,
on:
fragment(
"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
o.data,
activity.data,
activity.data
),
as: :object
)
end
def with_preloaded_object(query, join_type \\ :inner) do
query
|> has_named_binding?(:object)
|> if(do: query, else: with_joined_object(query, join_type))
|> preload([activity, object: object], object: object)
end
# Note: applies to fake activities (ActivityPub.Utils.get_notified_from_object/1 etc.)
def user_actor(%Activity{actor: nil}), do: nil
def user_actor(%Activity{} = activity) do
with %User{} <- activity.user_actor do
activity.user_actor
else
_ -> User.get_cached_by_ap_id(activity.actor)
end
end
def with_joined_user_actor(query, join_type \\ :inner) do
join(query, join_type, [activity], u in User,
on: u.ap_id == activity.actor,
as: :user_actor
)
end
def with_preloaded_user_actor(query, join_type \\ :inner) do
query
|> with_joined_user_actor(join_type)
|> preload([activity, user_actor: user_actor], user_actor: user_actor)
end
def with_preloaded_bookmark(query, %User{} = user) do
from([a] in query,
left_join: b in Bookmark,
on: b.user_id == ^user.id and b.activity_id == a.id,
as: :bookmark,
preload: [bookmark: b]
)
end
def with_preloaded_bookmark(query, _), do: query
def with_preloaded_report_notes(query) do
from([a] in query,
left_join: r in ReportNote,
on: a.id == r.activity_id,
as: :report_note,
preload: [report_notes: r]
)
end
def with_preloaded_report_notes(query, _), do: query
def with_set_thread_muted_field(query, %User{} = user) do
from([a] in query,
left_join: tm in ThreadMute,
on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data),
as: :thread_mute,
select: %Activity{a | thread_muted?: not is_nil(tm.id)}
)
end
def with_set_thread_muted_field(query, _), do: query
def get_by_ap_id(ap_id) do
ap_id
|> Queries.by_ap_id()
|> Repo.one()
end
def get_bookmark(%Activity{} = activity, %User{} = user) do
if Ecto.assoc_loaded?(activity.bookmark) do
activity.bookmark
else
Bookmark.get(user.id, activity.id)
end
end
def get_bookmark(_, _), do: nil
def get_report(activity_id) do
opts = %{
type: "Flag",
skip_preload: true,
preload_report_notes: true
}
ActivityPub.fetch_activities_query([], opts)
|> where(id: ^activity_id)
|> Repo.one()
end
def change(struct, params \\ %{}) do
struct
|> cast(params, [:data, :recipients])
|> validate_required([:data])
|> unique_constraint(:ap_id, name: :activities_unique_apid_index)
end
def get_by_ap_id_with_object(ap_id) do
ap_id
|> Queries.by_ap_id()
|> with_preloaded_object(:left)
|> Repo.one()
end
@doc """
Gets activity by ID, doesn't load activities from deactivated actors by default.
"""
@spec get_by_id(String.t(), keyword()) :: t() | nil
def get_by_id(id, opts \\ [filter: [:restrict_deactivated]]), do: get_by_id_with_opts(id, opts)
@spec get_by_id_with_user_actor(String.t()) :: t() | nil
def get_by_id_with_user_actor(id), do: get_by_id_with_opts(id, preload: [:user_actor])
@spec get_by_id_with_object(String.t()) :: t() | nil
def get_by_id_with_object(id), do: get_by_id_with_opts(id, preload: [:object])
defp get_by_id_with_opts(id, opts) do
if FlakeId.flake_id?(id) do
query = Queries.by_id(id)
with_filters_query =
if is_list(opts[:filter]) do
Enum.reduce(opts[:filter], query, fn
{:type, type}, acc -> Queries.by_type(acc, type)
:restrict_deactivated, acc -> restrict_deactivated_users(acc)
_, acc -> acc
end)
else
query
end
with_preloads_query =
if is_list(opts[:preload]) do
Enum.reduce(opts[:preload], with_filters_query, fn
:user_actor, acc -> with_preloaded_user_actor(acc)
:object, acc -> with_preloaded_object(acc)
_, acc -> acc
end)
else
with_filters_query
end
Repo.one(with_preloads_query)
end
end
def all_by_ids_with_object(ids) do
Activity
|> where([a], a.id in ^ids)
|> with_preloaded_object()
|> Repo.all()
end
@doc """
Accepts `ap_id` or list of `ap_id`.
Returns a query.
"""
@spec create_by_object_ap_id(String.t() | [String.t()]) :: Ecto.Queryable.t()
def create_by_object_ap_id(ap_id) do
ap_id
|> Queries.by_object_id()
|> Queries.by_type("Create")
end
def get_all_create_by_object_ap_id(ap_id) do
ap_id
|> create_by_object_ap_id()
|> Repo.all()
end
def get_create_by_object_ap_id(ap_id) when is_binary(ap_id) do
create_by_object_ap_id(ap_id)
|> restrict_deactivated_users()
|> Repo.one()
end
def get_create_by_object_ap_id(_), do: nil
@doc """
Accepts `ap_id` or list of `ap_id`.
Returns a query.
"""
@spec create_by_object_ap_id_with_object(String.t() | [String.t()]) :: Ecto.Queryable.t()
def create_by_object_ap_id_with_object(ap_id) do
ap_id
|> create_by_object_ap_id()
|> with_preloaded_object()
end
def get_create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
ap_id
|> create_by_object_ap_id_with_object()
|> Repo.one()
end
def get_create_by_object_ap_id_with_object(_), do: nil
@spec create_by_id_with_object(String.t()) :: t() | nil
def create_by_id_with_object(id) do
get_by_id_with_opts(id, preload: [:object], filter: [type: "Create"])
end
defp get_in_reply_to_activity_from_object(%Object{data: %{"inReplyTo" => ap_id}}) do
get_create_by_object_ap_id_with_object(ap_id)
end
defp get_in_reply_to_activity_from_object(_), do: nil
def get_in_reply_to_activity(%Activity{} = activity) do
get_in_reply_to_activity_from_object(Object.normalize(activity, fetch: false))
end
def normalize(%Activity{data: %{"id" => ap_id}}), do: get_by_ap_id_with_object(ap_id)
def normalize(%{"id" => ap_id}), do: get_by_ap_id_with_object(ap_id)
def normalize(ap_id) when is_binary(ap_id), do: get_by_ap_id_with_object(ap_id)
def normalize(_), do: nil
def delete_all_by_object_ap_id(id) when is_binary(id) do
id
|> Queries.by_object_id()
|> Queries.exclude_type("Delete")
|> select([u], u)
|> Repo.delete_all(timeout: :infinity)
|> elem(1)
|> Enum.find(fn
%{data: %{"type" => "Create", "object" => ap_id}} when is_binary(ap_id) -> ap_id == id
%{data: %{"type" => "Create", "object" => %{"id" => ap_id}}} -> ap_id == id
_ -> nil
end)
|> purge_web_resp_cache()
end
def delete_all_by_object_ap_id(_), do: nil
defp purge_web_resp_cache(%Activity{data: %{"id" => id}} = activity) when is_binary(id) do
with %{path: path} <- URI.parse(id) do
@cachex.del(:web_resp_cache, path)
end
activity
end
defp purge_web_resp_cache(activity), do: activity
def follow_accepted?(
%Activity{data: %{"type" => "Follow", "object" => followed_ap_id}} = activity
) do
with %User{} = follower <- Activity.user_actor(activity),
%User{} = followed <- User.get_cached_by_ap_id(followed_ap_id) do
Pleroma.FollowingRelationship.following?(follower, followed)
else
_ -> false
end
end
def follow_accepted?(_), do: false
def all_by_actor_and_id(actor, status_ids \\ [])
def all_by_actor_and_id(_actor, []), do: []
def all_by_actor_and_id(actor, status_ids) do
Activity
|> where([s], s.id in ^status_ids)
|> where([s], s.actor == ^actor)
|> Repo.all()
end
def follow_requests_for_actor(%User{ap_id: ap_id}) do
ap_id
|> Queries.by_object_id()
|> Queries.by_type("Follow")
|> where([a], fragment("? ->> 'state' = 'pending'", a.data))
end
def following_requests_for_actor(%User{ap_id: ap_id}) do
Queries.by_type("Follow")
|> where([a], fragment("?->>'state' = 'pending'", a.data))
|> where([a], a.actor == ^ap_id)
|> Repo.all()
end
def restrict_deactivated_users(query) do
deactivated_users_query = from(u in User.Query.build(%{deactivated: true}), select: u.ap_id)
from(activity in query, where: activity.actor not in subquery(deactivated_users_query))
end
defdelegate search(user, query, options \\ []), to: Pleroma.Activity.Search
def direct_conversation_id(activity, for_user) do
alias Pleroma.Conversation.Participation
with %{data: %{"context" => context}} when is_binary(context) <- activity,
%Pleroma.Conversation{} = conversation <- Pleroma.Conversation.get_for_ap_id(context),
%Participation{id: participation_id} <-
Participation.for_user_and_conversation(for_user, conversation) do
participation_id
else
_ -> nil
end
end
@spec get_by_object_ap_id_with_object(String.t()) :: t() | nil
def get_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
ap_id
|> Queries.by_object_id()
|> with_preloaded_object()
|> first()
|> Repo.one()
end
def get_by_object_ap_id_with_object(_), do: nil
@spec add_by_params_query(String.t(), String.t(), String.t()) :: Ecto.Query.t()
def add_by_params_query(object_id, actor, target) do
object_id
|> Queries.by_object_id()
|> Queries.by_type("Add")
|> Queries.by_actor(actor)
|> where([a], fragment("?->>'target' = ?", a.data, ^target))
end
end