Introduce Sitemaps

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/mobilizon/events/events.ex

@@ -366,6 +366,15 @@ defmodule Mobilizon.Events do
     |> Repo.all()
   end
 
+  @spec stream_events_for_sitemap :: Enum.t()
+  def stream_events_for_sitemap do
+    Event
+    |> filter_public_visibility()
+    |> filter_draft()
+    |> filter_local()
+    |> Repo.stream()
+  end
+
   @doc """
   Returns the list of events with the same tags.
   """
@@ -1583,6 +1592,11 @@ defmodule Mobilizon.Events do
 
   defp filter_future_events(query, false), do: query
 
+  @spec filter_local(Ecto.Query.t()) :: Ecto.Query.t()
+  defp filter_local(query) do
+    where(query, [q], q.local == true)
+  end
+
   @spec filter_local_or_from_followed_instances_events(Ecto.Query.t()) :: Ecto.Query.t()
   defp filter_local_or_from_followed_instances_events(query) do
     from(q in query,