From 74efcd6311bc4d32327773ca7f9c77d53a3f8111 Mon Sep 17 00:00:00 2001
From: Frederico Santos <frederico.f.santos@tecnico.ulisboa.pt>
Date: Sun, 2 Jun 2024 19:31:29 +0100
Subject: [PATCH] chore: Refactor saving system data to prevent saving older
 sessions

---
 db/savedata.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/db/savedata.go b/db/savedata.go
index 021602f..77c4351 100644
--- a/db/savedata.go
+++ b/db/savedata.go
@@ -70,8 +70,13 @@ func ReadSystemSaveData(uuid []byte) (defs.SystemSaveData, error) {
 }
 
 func StoreSystemSaveData(uuid []byte, data defs.SystemSaveData) error {
+	systemData, err := ReadSystemSaveData(uuid)
+	if err != nil && systemData.Timestamp > data.Timestamp {
+		return errors.New("attempted to save an older system save")
+	}
+
 	var buf bytes.Buffer
-	err := gob.NewEncoder(&buf).Encode(data)
+	err = gob.NewEncoder(&buf).Encode(data)
 	if err != nil {
 		return err
 	}