f

internal/application/product/self_subscribe_policy.go

@@ -0,0 +1,16 @@
+package product
+
+import "context"
+
+// SelfSubscribePolicy 是否允许用户在控制台自助发起「订阅产品」
+type SelfSubscribePolicy interface {
+	Allow(ctx context.Context, userID string) (allowed bool, message string, err error)
+}
+
+// DefaultAllowSelfSubscribe 未装配下属模块时：恒允许
+type DefaultAllowSelfSubscribe struct{}
+
+// Allow 恒允许
+func (DefaultAllowSelfSubscribe) Allow(_ context.Context, _ string) (bool, string, error) {
+	return true, "", nil
+}

internal/application/product/subscription_application_service_impl.go

@@ -23,6 +23,7 @@ type SubscriptionApplicationServiceImpl struct {
 	productSubscriptionService *product_service.ProductSubscriptionService
 	userRepo                   user_repositories.UserRepository
 	apiCallRepository          domain_api_repo.ApiCallRepository
+	selfSubscribePolicy        SelfSubscribePolicy
 	logger                     *zap.Logger
 }
 
@@ -31,12 +32,17 @@ func NewSubscriptionApplicationService(
 	productSubscriptionService *product_service.ProductSubscriptionService,
 	userRepo user_repositories.UserRepository,
 	apiCallRepository domain_api_repo.ApiCallRepository,
+	selfSubscribePolicy SelfSubscribePolicy,
 	logger *zap.Logger,
 ) SubscriptionApplicationService {
+	if selfSubscribePolicy == nil {
+		selfSubscribePolicy = DefaultAllowSelfSubscribe{}
+	}
 	return &SubscriptionApplicationServiceImpl{
 		productSubscriptionService: productSubscriptionService,
 		userRepo:                   userRepo,
 		apiCallRepository:          apiCallRepository,
+		selfSubscribePolicy:        selfSubscribePolicy,
 		logger:                     logger,
 	}
 }
@@ -157,7 +163,17 @@ func (s *SubscriptionApplicationServiceImpl) BatchUpdateSubscriptionPrices(ctx c
 // CreateSubscription 创建订阅
 // 业务流程：1. 创建订阅
 func (s *SubscriptionApplicationServiceImpl) CreateSubscription(ctx context.Context, cmd *commands.CreateSubscriptionCommand) error {
-	_, err := s.productSubscriptionService.CreateSubscription(ctx, cmd.UserID, cmd.ProductID)
+	allow, msg, err := s.selfSubscribePolicy.Allow(ctx, cmd.UserID)
+	if err != nil {
+		return err
+	}
+	if !allow {
+		if msg == "" {
+			msg = "当前账号不允许自助订阅"
+		}
+		return fmt.Errorf("%s", msg)
+	}
+	_, err = s.productSubscriptionService.CreateSubscription(ctx, cmd.UserID, cmd.ProductID)
 	return err
 }