Allow passing sitemap url directly

apps/api/lib/buildel/sitemaps.ex

@@ -4,7 +4,7 @@ defmodule Buildel.Sitemaps do
   import SweetXml
 
   def get_sitemaps(url) do
-    with {:ok, sitemaps} <- fetch_robots_sitemaps(url) do
+    with {:ok, sitemaps} <- fetch_sitemaps(url) do
       fetch_sitemaps_recursive(sitemaps)
     else
       _ ->
@@ -15,6 +15,14 @@ defmodule Buildel.Sitemaps do
     end
   end
 
+  defp fetch_sitemaps(url) do
+    if url |> String.ends_with?("sitemap.xml") do
+      {:ok, [url]}
+    else
+      fetch_robots_sitemaps(url)
+    end
+  end
+
   defp fetch_robots_sitemaps(url) do
     uri = URI.parse(url) |> URI.merge("/robots.txt")