Update app.py

app.py

@@ -373,6 +373,24 @@ def is_slot_allowed_for_year(year, day, slot):
     return True
 
 
+
+def generate_unused_halls_report(room_slots, output_path="Unused_Halls_Report.xlsx"):
+    from openpyxl import Workbook
+    wb = Workbook()
+    ws = wb.active
+    ws.title = "Unused Rooms"
+
+    ws.append(["Room", "Day", "Slot"])
+
+    for room in room_slots:
+        for key in room_slots[room]:
+            if room_slots[room][key]:  # If the slot was never booked
+                day, slot = key.split("-")
+                ws.append([room, day, slot])
+
+    wb.save(output_path)
+
+
 def generate_timetable(course_df, room_df, output_dir, room_slots, timetable):
     from openpyxl import Workbook
     from openpyxl.styles import PatternFill