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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("? @> ?", activity.data, ^%{actor: 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
|
