feat: scope articles by brand

server/internal/shared/auth/context.go

@@ -11,6 +11,7 @@ type Actor struct {
 
 type actorKey struct{}
 type currentWorkspaceIDKey struct{}
+type currentBrandIDKey struct{}
 
 func WithActor(ctx context.Context, actor Actor) context.Context {
 	return context.WithValue(ctx, actorKey{}, actor)
@@ -51,3 +52,22 @@ func CurrentWorkspaceID(ctx context.Context) int64 {
 	}
 	return actor.PrimaryWorkspaceID
 }
+
+func WithCurrentBrandID(ctx context.Context, brandID int64) context.Context {
+	return context.WithValue(ctx, currentBrandIDKey{}, brandID)
+}
+
+func CurrentBrandIDFromCtx(ctx context.Context) (int64, bool) {
+	brandID, ok := ctx.Value(currentBrandIDKey{}).(int64)
+	if !ok || brandID <= 0 {
+		return 0, false
+	}
+	return brandID, true
+}
+
+func CurrentBrandID(ctx context.Context) int64 {
+	if brandID, ok := CurrentBrandIDFromCtx(ctx); ok {
+		return brandID
+	}
+	return 0
+}