Fix duplicate MulenPay transactions in history

tests/services/test_payment_service_mulenpay.py

@@ -2,6 +2,7 @@
 
 from pathlib import Path
 from typing import Any, Dict, Optional
+from types import ModuleType, SimpleNamespace
 import sys
 from datetime import datetime
 
@@ -25,6 +26,9 @@ class DummySession:
     async def commit(self) -> None:  # pragma: no cover - метод вызывается, но без логики
         return None
 
+    async def refresh(self, *_args: Any, **_kwargs: Any) -> None:
+        return None
+
 
 class DummyLocalPayment:
     def __init__(self, payment_id: int = 501) -> None:
@@ -139,3 +143,163 @@ async def test_create_mulenpay_payment_returns_none_without_service() -> None:
         description="Пополнение",
     )
     assert result is None
+
+
+@pytest.mark.anyio("asyncio")
+async def test_process_mulenpay_callback_avoids_duplicate_transactions(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    service = _make_service(None)
+    db = DummySession()
+
+    class DummyPayment:
+        def __init__(self) -> None:
+            self.user_id = 42
+            self.amount_kopeks = 1500
+            self.description = "Пополнение"
+            self.uuid = "mulen_1_test"
+            self.transaction_id: Optional[int] = None
+            self.mulen_payment_id: Optional[int] = None
+            self.status = "created"
+            self.is_paid = False
+
+    payment = DummyPayment()
+
+    async def fake_get_mulenpay_payment_by_uuid(
+        _db: DummySession, uuid: str
+    ) -> DummyPayment:
+        assert uuid == payment.uuid
+        return payment
+
+    async def fake_update_mulenpay_payment_status(
+        _db: DummySession, **kwargs: Any
+    ) -> DummyPayment:
+        payment.status = kwargs.get("status", payment.status)
+        payment.mulen_payment_id = kwargs.get("mulen_payment_id", payment.mulen_payment_id)
+        return payment
+
+    transaction_calls: list[Dict[str, Any]] = []
+
+    class DummyTransaction:
+        def __init__(self, transaction_id: int = 555) -> None:
+            self.id = transaction_id
+
+    async def fake_create_transaction(_db: DummySession, **kwargs: Any) -> DummyTransaction:
+        transaction_calls.append(kwargs)
+        return DummyTransaction()
+
+    async def fake_link_payment(
+        db: DummySession, *, payment: DummyPayment, transaction_id: int
+    ) -> DummyPayment:
+        payment.transaction_id = transaction_id
+        return payment
+
+    class DummyUser:
+        def __init__(self) -> None:
+            self.id = payment.user_id
+            self.telegram_id = 99
+            self.balance_kopeks = 0
+            self.has_made_first_topup = False
+            self.language = "ru"
+            self.promo_group = None
+            self.subscription = None
+
+    dummy_user = DummyUser()
+
+    async def fake_get_user_by_id(_db: DummySession, user_id: int) -> DummyUser:
+        assert user_id == payment.user_id
+        return dummy_user
+
+    balance_call: Dict[str, Any] = {}
+
+    async def fake_add_user_balance(
+        _db: DummySession,
+        user: DummyUser,
+        amount_kopeks: int,
+        description: str,
+        *,
+        create_transaction: bool = True,
+        **_kwargs: Any,
+    ) -> bool:
+        balance_call.update(
+            {
+                "create_transaction": create_transaction,
+                "description": description,
+                "amount_kopeks": amount_kopeks,
+            }
+        )
+        user.balance_kopeks += amount_kopeks
+        return True
+
+    async def fake_process_referral_topup(*_args: Any, **_kwargs: Any) -> None:
+        return None
+
+    async def fake_auto_purchase_saved_cart_after_topup(*_args: Any, **_kwargs: Any) -> bool:
+        return False
+
+    async def fake_has_user_cart(*_args: Any, **_kwargs: Any) -> bool:
+        return False
+
+    referral_module = ModuleType("app.services.referral_service")
+    referral_module.process_referral_topup = fake_process_referral_topup  # type: ignore[attr-defined]
+    monkeypatch.setitem(sys.modules, "app.services.referral_service", referral_module)
+
+    auto_module = ModuleType("app.services.subscription_auto_purchase_service")
+    auto_module.auto_purchase_saved_cart_after_topup = (  # type: ignore[attr-defined]
+        fake_auto_purchase_saved_cart_after_topup
+    )
+    monkeypatch.setitem(sys.modules, "app.services.subscription_auto_purchase_service", auto_module)
+
+    user_cart_module = ModuleType("app.services.user_cart_service")
+    user_cart_module.user_cart_service = SimpleNamespace(  # type: ignore[attr-defined]
+        has_user_cart=fake_has_user_cart
+    )
+    monkeypatch.setitem(sys.modules, "app.services.user_cart_service", user_cart_module)
+
+    monkeypatch.setattr(
+        payment_service_module,
+        "get_mulenpay_payment_by_uuid",
+        fake_get_mulenpay_payment_by_uuid,
+        raising=False,
+    )
+    monkeypatch.setattr(
+        payment_service_module,
+        "update_mulenpay_payment_status",
+        fake_update_mulenpay_payment_status,
+        raising=False,
+    )
+    monkeypatch.setattr(
+        payment_service_module,
+        "create_transaction",
+        fake_create_transaction,
+        raising=False,
+    )
+    monkeypatch.setattr(
+        payment_service_module,
+        "link_mulenpay_payment_to_transaction",
+        fake_link_payment,
+        raising=False,
+    )
+    monkeypatch.setattr(
+        payment_service_module,
+        "get_user_by_id",
+        fake_get_user_by_id,
+        raising=False,
+    )
+    monkeypatch.setattr(
+        payment_service_module,
+        "add_user_balance",
+        fake_add_user_balance,
+        raising=False,
+    )
+
+    result = await service.process_mulenpay_callback(
+        db,
+        {"uuid": payment.uuid, "payment_status": "success", "id": 123, "amount": 1500},
+    )
+
+    assert result is True
+    assert transaction_calls, "create_transaction should be called"
+    assert balance_call["create_transaction"] is False
+    assert dummy_user.balance_kopeks == payment.amount_kopeks
+    assert payment.transaction_id is not None