update endopoints

backend/rooms.py

@@ -133,7 +133,7 @@ def get_rooms(user_id):
     )
 
     return rooms
-    
+
 def delete_room(room_id):
     room = execute(
         """
@@ -243,4 +243,39 @@ def leave_room(room_id, user_id):
             room_id,
             user_id
         )
-    )
+    )
+
+def change_room_name(room_id, new_name, user_id):
+    room = execute(
+        """
+        SELECT id
+        FROM rooms
+        WHERE id = ?
+        """,
+        (room_id,)
+    )
+
+    if not room:
+        return {
+            "status": "error",
+            "reason": "room_not_found"
+        }
+
+    execute(
+        """
+        UPDATE rooms
+        SET room_name = ?
+        WHERE id = ?
+        """,
+        (
+            new_name,
+            room_id
+        )
+    )
+
+    return {
+        "status": "updated",
+        "new_name": new_name,
+        "room_id": room_id,
+        "updated_by": user_id
+    }