优化结构

app/system/internal/data/payment/payment_helpers.go

@@ -0,0 +1,23 @@
+package payment
+
+import "kra/app/system/internal/utils/paymentutil"
+
+func text(values map[string]any, key string) string {
+	value, _ := values[key].(string)
+	return value
+}
+
+func firstAny(values map[string]any, keys ...string) string {
+	for _, key := range keys {
+		if value, ok := values[key].(string); ok && value != "" {
+			return value
+		}
+	}
+	return ""
+}
+
+// configuredInt64 keeps repository-side validation independent from the
+// provider adapter package while sharing the canonical payment parser.
+func configuredInt64(values map[string]any, key string, fallback int64) int64 {
+	return paymentutil.ConfiguredInt64(values, key, fallback)
+}