fix(t243): allow deleting unreferenced procurement drafts

backend-api/internal/usecase/errors.go

@@ -60,14 +60,19 @@ func invalidError(code, message string, fields map[string]string) *Error {
 }
 
 var (
-	ErrRepositoryNotFound      = errors.New("repository resource not found")
-	ErrIdempotencyConflict     = errors.New("idempotency key payload conflict")
-	ErrSourceReferenceConflict = errors.New("source reference conflict")
-	ErrAssetUnavailable        = errors.New("asset is unavailable")
-	ErrTaskStateConflict       = errors.New("task state conflict")
-	ErrFreightOrderInUse       = errors.New("freight order is in use")
-	ErrRepositoryUnavailable   = errors.New("repository unavailable")
-	ErrRepositoryInvariant     = errors.New("repository invariant failed")
+	ErrRepositoryNotFound       = errors.New("repository resource not found")
+	ErrIdempotencyConflict      = errors.New("idempotency key payload conflict")
+	ErrSourceReferenceConflict  = errors.New("source reference conflict")
+	ErrAssetUnavailable         = errors.New("asset is unavailable")
+	ErrTaskStateConflict        = errors.New("task state conflict")
+	ErrFreightOrderHasReference = errors.New(
+		"freight order has a procurement reference",
+	)
+	ErrFreightOrderHasPurchaseTask = errors.New(
+		"freight order has a purchase task",
+	)
+	ErrRepositoryUnavailable = errors.New("repository unavailable")
+	ErrRepositoryInvariant   = errors.New("repository invariant failed")
 )
 
 func wrapRepositoryError(err error) error {
@@ -107,11 +112,18 @@ func wrapRepositoryError(err error) error {
 			"task state does not allow this operation",
 			err,
 		)
-	case errors.Is(err, ErrFreightOrderInUse):
+	case errors.Is(err, ErrFreightOrderHasPurchaseTask):
 		return newError(
 			ErrorKindConflict,
-			"FREIGHT_ORDER_IN_USE",
-			"freight order is already used by procurement",
+			"FREIGHT_ORDER_HAS_PURCHASE_TASK",
+			"freight order already has a purchase task",
+			err,
+		)
+	case errors.Is(err, ErrFreightOrderHasReference):
+		return newError(
+			ErrorKindConflict,
+			"FREIGHT_ORDER_HAS_REFERENCE",
+			"freight order already has a procurement reference",
 			err,
 		)
 	case errors.Is(err, ErrRepositoryUnavailable):