service backend

api/billing/fees/internal/service/fees/options.go

@@ -0,0 +1,37 @@
+package fees
+
+import (
+	oracleclient "github.com/tech/sendico/fx/oracle/client"
+	clockpkg "github.com/tech/sendico/pkg/clock"
+)
+
+// Option configures a Service instance.
+type Option func(*Service)
+
+// WithClock sets a custom clock implementation.
+func WithClock(clock clockpkg.Clock) Option {
+	return func(s *Service) {
+		if clock != nil {
+			s.clock = clock
+		}
+	}
+}
+
+// WithCalculator sets a custom calculator implementation.
+func WithCalculator(calculator Calculator) Option {
+	return func(s *Service) {
+		if calculator != nil {
+			s.calculator = calculator
+		}
+	}
+}
+
+// WithOracleClient wires an FX oracle client for FX trigger evaluations.
+func WithOracleClient(oracle oracleclient.Client) Option {
+	return func(s *Service) {
+		s.oracle = oracle
+		if qc, ok := s.calculator.(*quoteCalculator); ok {
+			qc.oracle = oracle
+		}
+	}
+}