feat: better card ascii art

1 files changed, 5 insertions, 4 deletions

diff --git a/internal/admin/api_room_courses.go b/internal/admin/api_room_courses.go
index 5a33e6a..db74adf 100644
--- a/internal/admin/api_room_courses.go
+++ b/internal/admin/api_room_courses.go
@@ -204,16 +204,17 @@ func (s *AdminServer) handleCourseByID(w http.ResponseWriter, r *http.Request) {
 		delete(body, "_raw")
 		delete(body, "_path")
 
-		var oldContent []byte
-		if existing, err := snapshotFile(path); err == nil {
-			oldContent = existing
+		oldContent, existed, err := snapshotBefore(path)
+		if err != nil {
+			failJSON(w, "read existing file: "+err.Error())
+			return
 		}
 		newContent, err := writeMapAsYAML(path, body)
 		if err != nil {
 			failJSON(w, "write error: "+err.Error())
 			return
 		}
-		isCreate := oldContent == nil
+		isCreate := !existed
 		desc := "Updated course " + id
 		if isCreate {
 			desc = "Created course " + id