fix ксе tariffs

app/adapters/delivery_providers/cse/mapper.py

@@ -18,11 +18,14 @@ def map_cse_calc_response(
     *,
     delivery_type: str = "",
     delivery_type_label: str = "",
+    service_guid: str | None = None,
 ) -> list[DeliveryPrice]:
     """Map a parsed ``Calc`` ``return`` Element into unified delivery prices."""
 
     prices: list[DeliveryPrice] = []
     for tariff in _iter_tariffs(root):
+        if service_guid is not None and tariff.value != service_guid:
+            continue
         price = _map_tariff(tariff, delivery_type, delivery_type_label)
         if price is not None:
             prices.append(price)
@@ -35,11 +38,11 @@ def map_cse_calc_response_for_tariff_code(
     tariff_code: str,
     delivery_type_label: str = "",
 ) -> DeliveryPrice | None:
-    """Return the tariff matching ``tariff_code`` (``"<DeliveryType>|<Urgency>"``)."""
+    """Return tariff matching ``"<DeliveryType>|<ServiceGuid>|<Urgency>"``."""
 
-    delivery_type, _, urgency = tariff_code.partition("|")
+    delivery_type, tariff_guid, urgency = _split_tariff_code(tariff_code)
     for tariff in _iter_tariffs(root):
-        if _tariff_urgency(tariff) == urgency:
+        if _tariff_matches(tariff, tariff_guid, urgency):
             price = _map_tariff(tariff, delivery_type, delivery_type_label)
             if price is not None:
                 return price
@@ -52,6 +55,19 @@ def _tariff_urgency(tariff: Element) -> str | None:
     return tariff.field_value("Urgency") or tariff.value
 
 
+def _tariff_matches(tariff: Element, tariff_guid: str, urgency: str) -> bool:
+    if _tariff_urgency(tariff) != urgency:
+        return False
+    return tariff.value == tariff_guid
+
+
+def _split_tariff_code(tariff_code: str) -> tuple[str, str, str]:
+    parts = tariff_code.split("|")
+    if len(parts) != 3 or not parts[1] or not parts[2]:
+        raise CSEMappingError("CSE tariff_code has invalid format.")
+    return parts[0], parts[1], parts[2]
+
+
 def _iter_tariffs(root: Element):
     for destination in root.items:
         for tariff in destination.items:
@@ -70,9 +86,11 @@ def _map_tariff(
     urgency = _tariff_urgency(tariff)
     if not urgency:
         return None
-    # Unified tariff_code carries both the delivery scheme and the urgency so
-    # registration (SaveDocuments) can set DeliveryOfCargo and Urgency.
-    tariff_code = f"{delivery_type}|{urgency}"
+    if not tariff.value:
+        return None
+    # Unified tariff_code carries the delivery scheme, CSE service GUID and
+    # urgency so payment validation can recalculate the exact selected service.
+    tariff_code = f"{delivery_type}|{tariff.value}|{urgency}"
 
     raw_total = tariff.field_value("Total")
     if raw_total is None: