feat: backend service

backend/internal/notification/lobby_adapter.go

@@ -0,0 +1,35 @@
+package notification
+
+import (
+	"context"
+
+	"galaxy/backend/internal/lobby"
+)
+
+// LobbyAdapter returns an implementation of `lobby.NotificationPublisher`
+// backed by *Service. The adapter copies the producer-side intent shape
+// into notification.Intent and calls Submit; Submit's own malformed
+// fallback handles invalid payloads, so the adapter never blocks the
+// caller. The interface is the same one The wiring connects through the
+// no-op publisher.
+func (s *Service) LobbyAdapter() lobby.NotificationPublisher {
+	return &lobbyAdapter{svc: s}
+}
+
+type lobbyAdapter struct {
+	svc *Service
+}
+
+func (a *lobbyAdapter) PublishLobbyEvent(ctx context.Context, ev lobby.LobbyNotification) error {
+	if a == nil || a.svc == nil {
+		return nil
+	}
+	intent := Intent{
+		Kind: ev.Kind,
+		IdempotencyKey: ev.IdempotencyKey,
+		Recipients: ev.Recipients,
+		Payload: ev.Payload,
+	}
+	_, err := a.svc.Submit(ctx, intent)
+	return err
+}