Add option to disable local timeline

config/config.exs

@@ -273,7 +273,8 @@
   local_bubble: [],
   max_frontend_settings_json_chars: 100_000,
   export_prometheus_metrics: true,
-  federated_timeline_available: true
+  federated_timeline_available: true,
+  local_timeline_available: true
 
 config :pleroma, :welcome,
   direct_message: [

lib/pleroma/web/mastodon_api/controllers/timeline_controller.ex

@@ -122,8 +122,14 @@ def public(%{assigns: %{user: user}} = conn, params) do
     local_only = params[:local]
     timeline_type = if local_only, do: :local, else: :federated
 
+    timeline_enabled =
+      case timeline_type do
+        :local -> Config.get([:instance, :local_timeline_available], true)
+        :federated -> Config.get([:instance, :federated_timeline_available], true)
+      end
+
     with {:enabled, true} <-
-           {:enabled, local_only || Config.get([:instance, :federated_timeline_available], true)},
+           {:enabled, timeline_enabled},
          {:authenticated, true} <-
            {:authenticated, !(is_nil(user) and restrict_unauthenticated?(timeline_type))} do
       Logger.debug("TimelineController.public: fetching activities")
@@ -152,9 +158,15 @@ def public(%{assigns: %{user: user}} = conn, params) do
       )
     else
       {:enabled, false} ->
+        error_msg =
+          case timeline_type do
+            :local -> "Local timeline is disabled"
+            :federated -> "Federated timeline is disabled"
+          end
+
         conn
         |> put_status(404)
-        |> json(%{error: "Federated timeline is disabled"})
+        |> json(%{error: error_msg})
 
       {:authenticated, false} ->
         fail_on_bad_auth(conn)