validate using currency service

backend/app/api/handlers/v1/v1_ctrl_group.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/hay-kot/homebox/backend/internal/core/services"
 	"github.com/hay-kot/homebox/backend/internal/data/repo"
+	"github.com/hay-kot/homebox/backend/internal/sys/validate"
 	"github.com/hay-kot/homebox/backend/internal/web/adapters"
 	"github.com/hay-kot/httpkit/errchain"
 )
@@ -52,6 +53,14 @@ func (ctrl *V1Controller) HandleGroupGet() errchain.HandlerFunc {
 func (ctrl *V1Controller) HandleGroupUpdate() errchain.HandlerFunc {
 	fn := func(r *http.Request, body repo.GroupUpdate) (repo.Group, error) {
 		auth := services.NewContext(r.Context())
+
+		ok := ctrl.svc.Currencies.IsSupported(body.Currency)
+		if !ok {
+			return repo.Group{}, validate.NewFieldErrors(
+				validate.NewFieldError("currency", "currency is not supported"),
+			)
+		}
+
 		return ctrl.svc.Group.UpdateGroup(auth, body)
 	}
 

backend/internal/sys/validate/errors.go

@@ -88,7 +88,7 @@ func (fe FieldErrors) Nil() bool {
 	return len(fe) == 0
 }
 
-// Error implments the error interface.
+// Error implements the error interface.
 func (fe FieldErrors) Error() string {
 	d, err := json.Marshal(fe)
 	if err != nil {
@@ -101,6 +101,10 @@ func NewFieldErrors(errs ...FieldError) FieldErrors {
 	return errs
 }
 
+func NewFieldError(field, reason string) FieldError {
+	return FieldError{Field: field, Error: reason}
+}
+
 func IsFieldError(err error) bool {
 	v := FieldErrors{}
 	return errors.As(err, &v)