callbacks service draft

api/edge/callbacks/internal/subscriptions/module.go

@@ -0,0 +1,17 @@
+package subscriptions
+
+import (
+	"context"
+
+	"github.com/tech/sendico/edge/callbacks/internal/storage"
+)
+
+// Resolver resolves active webhook endpoints for an event.
+type Resolver interface {
+	Resolve(ctx context.Context, clientID, eventType string) ([]storage.Endpoint, error)
+}
+
+// Dependencies defines subscriptions resolver dependencies.
+type Dependencies struct {
+	EndpointRepo storage.EndpointRepo
+}

api/edge/callbacks/internal/subscriptions/service.go

@@ -0,0 +1,38 @@
+package subscriptions
+
+import (
+	"context"
+	"strings"
+
+	"github.com/tech/sendico/edge/callbacks/internal/storage"
+	"github.com/tech/sendico/pkg/merrors"
+)
+
+type service struct {
+	repo storage.EndpointRepo
+}
+
+// New creates endpoint resolver service.
+func New(deps Dependencies) (Resolver, error) {
+	if deps.EndpointRepo == nil {
+		return nil, merrors.InvalidArgument("subscriptions: endpoint repo is required", "endpointRepo")
+	}
+
+	return &service{repo: deps.EndpointRepo}, nil
+}
+
+func (s *service) Resolve(ctx context.Context, clientID, eventType string) ([]storage.Endpoint, error) {
+	if strings.TrimSpace(clientID) == "" {
+		return nil, merrors.InvalidArgument("subscriptions: client id is required", "clientID")
+	}
+	if strings.TrimSpace(eventType) == "" {
+		return nil, merrors.InvalidArgument("subscriptions: event type is required", "eventType")
+	}
+
+	endpoints, err := s.repo.FindActiveByClientAndType(ctx, clientID, eventType)
+	if err != nil {
+		return nil, err
+	}
+
+	return endpoints, nil
+}