chore: clean up product display in hotel and cleaner interfacing

backend/server/app.py

@@ -290,8 +290,14 @@ async def get_products(
         query = supabase.table(table).select('*')
 
         # filter by exact date_index if provided
+        # dateIndex from frontend is days from today, convert to days since epoch
         if dateIndex is not None:
-            query = query.eq('date_index', dateIndex)
+            from datetime import datetime
+            epoch = datetime(1970, 1, 1)
+            today = datetime.now().replace(hour=0, minute=0, second=0, microsecond=0)
+            today_index = int((today - epoch).total_seconds() / 86400)
+            actual_date_index = today_index + dateIndex
+            query = query.eq('date_index', actual_date_index)
 
         response = query.execute()
         results = response.data