migrate from github

internal/utils/string.go

@@ -0,0 +1,43 @@
+package utils
+
+import (
+	"strconv"
+	"strings"
+)
+
+func Int64ToString(i int64) string {
+	return strconv.FormatInt(i, 10)
+}
+
+func ParseInt64(value string) (int64, error) {
+	return strconv.ParseInt(strings.TrimSpace(value), 10, 64)
+}
+
+func NormalizeToken(raw, fallback string) string {
+	fallback = strings.TrimSpace(fallback)
+	if fallback == "" {
+		fallback = "default"
+	}
+
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return fallback
+	}
+
+	var b strings.Builder
+	for _, r := range raw {
+		if (r >= 'a' && r <= 'z') ||
+			(r >= 'A' && r <= 'Z') ||
+			(r >= '0' && r <= '9') ||
+			r == '.' || r == '-' || r == '_' {
+			b.WriteRune(r)
+			continue
+		}
+		b.WriteByte('-')
+	}
+
+	if b.Len() == 0 {
+		return fallback
+	}
+	return b.String()
+}