added checks for timetable length

Author: thomasyzy7

course-matrix/backend/src/controllers/timetablesController.ts

@@ -25,6 +25,10 @@ export default {
           .status(400)
           .json({ error: "timetable title and semester are required" });
       }
+      // Timetables cannot be longer than 50 characters. 
+      if(timetable_title.length>50){
+        return res.status(400).json({error: "Timetable Title cannot be over 50 characters long"});
+      }
 
       // Check if a timetable with the same title already exist for this user
       const { data: existingTimetable, error: existingTimetableError } =
@@ -169,6 +173,11 @@ export default {
         });
       }
 
+      // Timetables cannot be longer than 50 characters. 
+      if(timetable_title.length>50){
+        return res.status(400).json({error: "Timetable Title cannot be over 50 characters long"});
+      }
+
       //Retrieve the authenticated user
       const user_id = (req as any).user.id;