Добавлена валидация цены

app/domain/price.py

@@ -12,6 +12,7 @@ DIMENSIONS_ROUND_SCALE = 1
 MIN_WEIGHT_KG = Decimal("0.01")
 MIN_DIMENSION_CM = Decimal("0.1")
 INTEGER_PRICE_QUANTIZER = Decimal("1")
+KOPECKS_IN_RUBLE = Decimal("100")
 DOC_SERVICE_MARKERS = ("документ", "document")
 
 _MISSING = object()
@@ -46,6 +47,8 @@ class ProviderPrice:
     currency: str
     delivery_days_min: int
     delivery_days_max: int
+    tariff_code: int | None = None
+    bypass_parcel_type_filter: bool = False
 
 
 def normalize_delivery_request(
@@ -118,6 +121,48 @@ def filter_and_sort_prices(
     )
 
 
+def calculate_expected_payment_amount_kopecks(
+    provider_price: object,
+    *,
+    price_multiplier: Decimal = DEFAULT_PROVIDER_PRICE_MULTIPLIER,
+) -> int | None:
+    """Return expected payment amount in kopecks for a RUB provider price."""
+
+    currency = _normalize_text(_get_optional_attr(provider_price, "currency")).upper()
+    if currency != "RUB":
+        return None
+
+    price = _try_to_decimal(_get_optional_attr(provider_price, "price"))
+    if price is None or not price.is_finite() or price <= 0:
+        return None
+
+    adjusted_price = _apply_price_multiplier_and_round(
+        price,
+        price_multiplier=_normalize_price_multiplier(price_multiplier),
+    )
+    if adjusted_price is None:
+        return None
+
+    return int(adjusted_price * KOPECKS_IN_RUBLE)
+
+
+def is_init_payment_price_valid(
+    requested_amount_kopecks: object,
+    provider_price: object,
+    *,
+    price_multiplier: Decimal = DEFAULT_PROVIDER_PRICE_MULTIPLIER,
+) -> bool:
+    expected_amount_kopecks = calculate_expected_payment_amount_kopecks(
+        provider_price,
+        price_multiplier=price_multiplier,
+    )
+    if expected_amount_kopecks is None:
+        return False
+
+    requested_amount = _try_to_int(requested_amount_kopecks)
+    return requested_amount == expected_amount_kopecks
+
+
 def filter_prices_by_parcel_type(
     prices: Iterable[ProviderPrice],
     *,
@@ -132,7 +177,8 @@ def filter_prices_by_parcel_type(
     return [
         price
         for price in prices
-        if _matches_parcel_type(price.service_name, normalized_parcel_type)
+        if price.bypass_parcel_type_filter
+        or _matches_parcel_type(price.service_name, normalized_parcel_type)
     ]
 
 
@@ -179,9 +225,18 @@ def _normalize_price(
         currency=currency,
         delivery_days_min=min_days,
         delivery_days_max=max_days,
+        tariff_code=_try_to_int(_get_optional_attr(candidate, "tariff_code")),
+        bypass_parcel_type_filter=_extract_bypass_parcel_type_filter(candidate),
     )
 
 
+def _extract_bypass_parcel_type_filter(candidate: object) -> bool:
+    value = _get_optional_attr(candidate, "bypass_parcel_type_filter")
+    if value is _MISSING or value is None:
+        return False
+    return bool(value)
+
+
 def _normalize_weight(weight: Decimal, scale: int) -> Decimal:
     rounded = _round_half_up(weight, scale)
     if rounded < MIN_WEIGHT_KG: