defmodule Pleroma.Web.ActivityPub.ActivityPub do alias Pleroma.{Activity, Repo, Object, Upload, User, Web} alias Ecto.{Changeset, UUID} import Ecto.Query import Pleroma.Web.ActivityPub.Utils require Logger def insert(map, local \\ true) when is_map(map) do with nil <- Activity.get_by_ap_id(map["id"]), map <- lazy_put_activity_defaults(map), :ok <- insert_full_object(map) do Repo.insert(%Activity{data: map, local: local}) else %Activity{} = activity -> {:ok, activity} error -> {:error, error} end end def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional), {:ok, activity} <- insert(create_data, local), :ok <- maybe_federate(activity) do {:ok, activity} end end # TODO: This is weird, maybe we shouldn't check here if we can make the activity. def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do with nil <- get_existing_like(ap_id, object), like_data <- make_like_data(user, object, activity_id), {:ok, activity} <- insert(like_data, local), {:ok, object} <- add_like_to_object(activity, object), :ok <- maybe_federate(activity) do {:ok, activity, object} else %Activity{} = activity -> {:ok, activity, object} error -> {:error, error} end end def unlike(%User{} = actor, %Object{} = object) do with %Activity{} = activity <- get_existing_like(actor.ap_id, object), {:ok, _activity} <- Repo.delete(activity), {:ok, object} <- remove_like_from_object(activity, object) do {:ok, object} else _e -> {:ok, object} end end def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do with announce_data <- make_announce_data(user, object, activity_id), {:ok, activity} <- insert(announce_data, local), {:ok, object} <- add_announce_to_object(activity, object), :ok <- maybe_federate(activity) do {:ok, activity, object} else error -> {:error, error} end end def follow(follower, followed, activity_id \\ nil, local \\ true) do with data <- make_follow_data(follower, followed, activity_id), {:ok, activity} <- insert(data, local), :ok <- maybe_federate(activity) do {:ok, activity} end end def unfollow(follower, followed, local \\ true) do with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed), unfollow_data <- make_unfollow_data(follower, followed, follow_activity), {:ok, activity} <- insert(unfollow_data, local), :ok, maybe_federate(activity) do {:ok, activity} end end def fetch_activities_for_context(context) do query = from activity in Activity, where: fragment("? @> ?", activity.data, ^%{ type: "Create", context: context }), order_by: [desc: :inserted_at] Repo.all(query) end def fetch_public_activities(opts \\ %{}) do public = ["https://www.w3.org/ns/activitystreams#Public"] fetch_activities(public, opts) end defp restrict_since(query, %{"since_id" => since_id}) do from activity in query, where: activity.id > ^since_id end defp restrict_since(query, _), do: query defp restrict_recipients(query, recipients) do Enum.reduce(recipients, query, fn (recipient, q) -> map = %{ to: [recipient] } from activity in q, or_where: fragment(~s(? @> ?), activity.data, ^map) end) end defp restrict_local(query, %{"local_only" => true}) do from activity in query, where: activity.local == true end defp restrict_local(query, _), do: query defp restrict_max(query, %{"max_id" => max_id}) do from activity in query, where: activity.id < ^max_id end defp restrict_max(query, _), do: query defp restrict_actor(query, %{"actor_id" => actor_id}) do from activity in query, where: fragment("?->>'actor' = ?", activity.data, ^actor_id) end defp restrict_actor(query, _), do: query def fetch_activities(recipients, opts \\ %{}) do base_query = from activity in Activity, limit: 20, order_by: [desc: :inserted_at] base_query |> restrict_recipients(recipients) |> restrict_since(opts) |> restrict_local(opts) |> restrict_max(opts) |> restrict_actor(opts) |> Repo.all |> Enum.reverse end def upload(file) do data = Upload.store(file) Repo.insert(%Object{data: data}) end end