Merge remote-tracking branch 'remotes/upstream/develop' into 1335-user-api-id-fields-relations

# Conflicts:
#	lib/pleroma/web/activity_pub/activity_pub.ex

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -734,6 +734,17 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> Enum.reverse()
   end
 
+  def fetch_instance_activities(params) do
+    params =
+      params
+      |> Map.put("type", ["Create", "Announce"])
+      |> Map.put("instance", params["instance"])
+      |> Map.put("whole_db", true)
+
+    fetch_activities([Pleroma.Constants.as_public()], params, :offset)
+    |> Enum.reverse()
+  end
+
   defp user_activities_recipients(%{"godmode" => true}) do
     []
   end
@@ -961,6 +972,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_muted_reblogs(query, _), do: query
 
+  defp restrict_instance(query, %{"instance" => instance}) do
+    users =
+      from(
+        u in User,
+        select: u.ap_id,
+        where: fragment("? LIKE ?", u.nickname, ^"%@#{instance}")
+      )
+      |> Repo.all()
+
+    from(activity in query, where: activity.actor in ^users)
+  end
+
+  defp restrict_instance(query, _), do: query
+
   defp exclude_poll_votes(query, %{"include_poll_votes" => true}), do: query
 
   defp exclude_poll_votes(query, _) do
@@ -1067,6 +1092,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> restrict_reblogs(opts)
     |> restrict_pinned(opts)
     |> restrict_muted_reblogs(restrict_muted_reblogs_opts)
+    |> restrict_instance(opts)
     |> Activity.restrict_deactivated_users()
     |> exclude_poll_votes(opts)
     |> exclude_visibility(opts)