Change structure

lib/nulla_web/controllers/activitypub/hostmeta_controller.ex

@@ -0,0 +1,18 @@
+defmodule NullaWeb.ActivityPub.HostmetaController do
+  use NullaWeb, :controller
+
+  def index(conn, _params) do
+    domain = NullaWeb.Endpoint.host()
+
+    xml = """
+    <?xml version="1.0" encoding="UTF-8"?>
+    <XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
+      <Link rel="lrdd" type="application/xrd+xml" template="https://#{domain}/.well-known/webfinger?resource={uri}"/>
+    </XRD>
+    """
+
+    conn
+    |> put_resp_content_type("application/xrd+xml")
+    |> send_resp(200, xml)
+  end
+end