优化结构

internal/biz/system/payment_log.go

@@ -0,0 +1,32 @@
+package system
+
+import (
+	"context"
+	"log/slog"
+)
+
+// PaymentLogger isolates payment audit logging from the payment workflow and
+// lets an application replace slog with its own structured logger.
+type PaymentLogger interface {
+	Info(context.Context, string, ...any)
+	Error(context.Context, string, ...any)
+}
+
+type slogPaymentLogger struct {
+	logger *slog.Logger
+}
+
+func NewPaymentLogger(logger *slog.Logger) PaymentLogger {
+	if logger == nil {
+		logger = slog.Default()
+	}
+	return &slogPaymentLogger{logger: logger.With("mod", "payment")}
+}
+
+func (l *slogPaymentLogger) Info(ctx context.Context, message string, args ...any) {
+	l.logger.InfoContext(ctx, message, args...)
+}
+
+func (l *slogPaymentLogger) Error(ctx context.Context, message string, args ...any) {
+	l.logger.ErrorContext(ctx, message, args...)
+}