ignore bin

.gitignore

@@ -1 +1,2 @@
 **/*.sw*
+/jellyfin-user-clone

main.go

@@ -31,6 +31,9 @@ func main() {
 	if err != nil {
 		log.Fatalf("%v", err)
 	}
+	defer func() {
+		os.RemoveAll(workd)
+	}()
 
 	{
 		if err := cp(path.Join(data, jellyDB), path.Join(workd, jellyDB)); err != nil {
@@ -65,6 +68,8 @@ func main() {
 	if n, err := SelectOne[int](jellyfinDB, `SELECT COUNT(*) FROM Users WHERE Username = $1`, toU); err != nil {
 		log.Fatalf("%v", err)
 	} else if n != 1 {
+		log.Println("creating user", toU, "from", fromU)
+
 		nextID, err := SelectOne[int](libraryDB, `SELECT COALESCE(MAX(userId), 0)+1 FROM UserDatas`)
 		if err != nil {
 			log.Fatalf("failed to get max userid ever: %v", err)
@@ -79,6 +84,8 @@ func main() {
 		} else if n != 1 {
 			log.Fatalf("still no username=%q after insert", toU)
 		}
+	} else {
+		log.Println("user", toU, "already exists")
 	}
 
 	toUUID, err := SelectOne[string](jellyfinDB, `SELECT Id FROM Users WHERE Username = $1`, toU)
@@ -206,7 +213,7 @@ func CloneForColumn[T any](db *sql.DB, table, column string, from, to T, fixed m
 
 		values := []any{}
 		for _ = range uuidGenColumns {
-			values = append(values, fmt.Sprintf("'%s'", strings.ToUpper(uuid.New().String())))
+			values = append(values, fmt.Sprintf("'%s'", guid()))
 		}
 		for _, arg := range args {
 			values = append(values, *(arg.(*any)))
@@ -243,7 +250,7 @@ func CloneForColumn[T any](db *sql.DB, table, column string, from, to T, fixed m
 			func() string {
 				uuids := make([]string, len(uuidGenColumns))
 				for i := range uuids {
-					uuids[i] = fmt.Sprintf("'%s'", strings.ToUpper(uuid.New().String()))
+					uuids[i] = fmt.Sprintf("'%s'", guid())
 				}
 				s := strings.Join(uuids, ", ")
 				if len(uuids) > 0 {
@@ -399,6 +406,12 @@ func Select[T any](db *sql.DB, q string, args ...any) ([]T, error) {
 	return results, rows.Err()
 }
 
-guid() string {
-
+func guid() string {
+	s := []byte(uuid.New().String())
+	for i := range s {
+		if ('A' <= s[i] && s[i] <= 'Z') || ('a' <= s[i] && s[i] <= 'z') {
+			s[i] = '0' + byte(int(s[i])%10)
+		}
+	}
+	return strings.ToUpper(string(s))
 }