import asyncio
from dataclasses import dataclass, field
from decimal import Decimal
from typing import Any

from app.schemas.payment import InitPaymentRequest, TBankPaymentNotification
from app.schemas.response import DeliveryPrice
from app.services.aggregator import AggregatorService
from tests.payment_fixtures import make_init_payment_payload, make_init_payment_request


class StubPaymentAdapter:
    async def create_payment_link(self, order_uuid: str, amount_kopecks: int) -> str:
        return "https://pay.test/payment/1"

    def verify_payment_notification(self, notification: TBankPaymentNotification) -> None:
        return None


class StubValidationAdapter:
    def __init__(self, response: DeliveryPrice | None) -> None:
        self._response = response
        self.calls: list[InitPaymentRequest] = []

    async def get_payment_price(
        self, request: InitPaymentRequest
    ) -> DeliveryPrice | None:
        self.calls.append(request)
        return self._response


@dataclass
class CSEResult:
    order_number: str = "CSE-000123"


class StubCSERegistrationAdapter:
    def __init__(self) -> None:
        self.calls: list[tuple[InitPaymentRequest, str]] = []

    async def register_order(
        self, request: InitPaymentRequest, order_uuid: str
    ) -> CSEResult:
        self.calls.append((request, order_uuid))
        return CSEResult()


class StubCDEKRegistrationAdapter:
    def __init__(self) -> None:
        self.calls: list[tuple[InitPaymentRequest, str]] = []

    async def register_order(
        self, request: InitPaymentRequest, order_uuid: str
    ) -> object:
        self.calls.append((request, order_uuid))
        raise AssertionError("CDEK adapter must not be called for a CSE order.")


def _cse_price() -> DeliveryPrice:
    return DeliveryPrice.model_construct(
        provider="cse",
        service_name="CSE tariff",
        price=Decimal("1250.00"),
        currency="RUB",
        delivery_days_min=1,
        delivery_days_max=2,
        tariff_code="cse-guid",
    )


def _cse_request() -> InitPaymentRequest:
    return make_init_payment_request(
        systemData={
            "tariff": {
                "provider": "cse",
                "serviceName": "CSE tariff",
                "price": 125000,
                "deliveryDaysMin": 1,
                "deliveryDaysMax": 2,
                "tariffCode": "cse-guid",
            },
            "parcelType": "parcel",
            "weight": "1.0",
            "dimensions": {"length": "10", "width": "10", "height": "10"},
        }
    )


def test_init_payment_routes_validation_to_tariff_provider() -> None:
    cse_validation = StubValidationAdapter(_cse_price())
    cdek_validation = StubValidationAdapter(None)
    service = AggregatorService(
        providers=[],
        payment_adapter=StubPaymentAdapter(),
        payment_price_validation_adapters={
            "cdek": cdek_validation,
            "cse": cse_validation,
        },
        provider_price_multiplier=Decimal("1"),
        order_uuid_factory=lambda: "order-uuid-1",
    )

    asyncio.run(service.init_payment(_cse_request()))

    assert len(cse_validation.calls) == 1
    assert cdek_validation.calls == []


@dataclass
class StoredOrder:
    order_uuid: str = "order-uuid-1"
    provider: str = "cse"
    payload: dict[str, Any] = field(
        default_factory=lambda: _cse_request().model_dump(mode="json", by_alias=True)
    )
    payment_status: str | None = None
    tbank_payment_id: int | None = None
    cdek_order_uuid: str | None = None
    cse_order_number: str | None = None
    payment_email_sent_at: object | None = None
    account_email: str | None = None


class StubSession:
    async def __aenter__(self) -> object:
        return object()

    async def __aexit__(self, *args: object) -> None:
        return None


class StubOrderRepository:
    def __init__(self, order: StoredOrder) -> None:
        self._order = order

    def session(self) -> StubSession:
        return StubSession()

    async def get_order_by_order_uuid(
        self, session: object, order_uuid: str, *, for_update: bool = False
    ) -> StoredOrder:
        return self._order

    async def mark_payment_status(
        self, session: object, order_uuid: str, status: str, payment_id: int
    ) -> StoredOrder:
        self._order.payment_status = status
        self._order.tbank_payment_id = payment_id
        return self._order

    async def mark_cse_order_registered(
        self, session: object, order_uuid: str, cse_order_number: str
    ) -> StoredOrder:
        self._order.cse_order_number = cse_order_number
        return self._order

    async def mark_cdek_order_registered(
        self, session: object, order_uuid: str, cdek_order_uuid: str
    ) -> StoredOrder:
        raise AssertionError("CDEK persistence must not be used for a CSE order.")


def _notification() -> TBankPaymentNotification:
    return TBankPaymentNotification(
        TerminalKey="TestTerminal",
        OrderId="order-uuid-1",
        Success=True,
        Status="CONFIRMED",
        PaymentId=8347568144,
        ErrorCode="0",
        Amount=125000,
        Token="signed-token",
    )


def test_notification_routes_registration_to_order_provider() -> None:
    order = StoredOrder()
    cse_registration = StubCSERegistrationAdapter()
    service = AggregatorService(
        providers=[],
        payment_adapter=StubPaymentAdapter(),
        order_repository=StubOrderRepository(order),
        order_registration_adapters={
            "cdek": StubCDEKRegistrationAdapter(),
            "cse": cse_registration,
        },
    )

    result = asyncio.run(service.handle_tbank_payment_notification(_notification()))

    assert result == "OK"
    assert len(cse_registration.calls) == 1
    assert order.cse_order_number == "CSE-000123"