update promo

migrations/20260825025042_visitor-stats.sql

@@ -0,0 +1,27 @@
+CREATE TABLE IF NOT EXISTS public.visitor_stats (
+  id text PRIMARY KEY,
+  count bigint NOT NULL DEFAULT 0
+);
+
+INSERT INTO public.visitor_stats (id, count)
+VALUES ('global', 0)
+ON CONFLICT (id) DO NOTHING;
+
+CREATE OR REPLACE FUNCTION public.increment_visitor()
+RETURNS bigint
+LANGUAGE sql
+AS $$
+  UPDATE public.visitor_stats
+  SET count = count + 1
+  WHERE id = 'global'
+  RETURNING count;
+$$;
+
+ALTER TABLE public.visitor_stats ENABLE ROW LEVEL SECURITY;
+
+CREATE POLICY visitor_stats_select ON public.visitor_stats
+  FOR SELECT TO anon
+  USING (true);
+
+GRANT SELECT ON public.visitor_stats TO anon;
+GRANT EXECUTE ON FUNCTION public.increment_visitor() TO anon, authenticated;