import asyncio

import httpx

from app.controllers.v1.delivery import get_aggregator_service
from app.main import create_app
from app.schemas.payment import InitPaymentRequest, InitPaymentResponse
from app.services.aggregator import (
    InitPaymentUnavailableError,
    InvalidInitPaymentRequestError,
)


class StubAggregatorService:
    def __init__(self, *, response: object, error: Exception | None = None) -> None:
        self._response = response
        self._error = error
        self.calls: list[InitPaymentRequest] = []

    async def init_payment(self, request: InitPaymentRequest) -> object:
        self.calls.append(request)
        if self._error is not None:
            raise self._error
        return self._response


def _install_service_override(app, service: StubAggregatorService) -> None:
    async def override_service() -> StubAggregatorService:
        return service

    app.dependency_overrides[get_aggregator_service] = override_service


def _valid_payload() -> dict[str, object]:
    return {
        "order_uuid": "order-uuid-1",
        "price": 125000,
        "type": 2,
        "tariff_code": 535,
        "comment": "Test payment",
        "sender": {
            "name": "Petr Petrov",
            "email": "sender@example.com",
            "phone": {"number": "+79009876543"},
        },
        "recipient": {
            "name": "Ivan Ivanov",
            "email": "ivan@example.com",
            "phone": {"number": "+79001234567"},
        },
        "from_location": {
            "address": "Lenina 1",
            "city": "Moscow",
            "country_code": "RU",
        },
        "to_location": {
            "address": "Pushkina 10",
            "city": "Novosibirsk",
            "country_code": "RU",
        },
        "services": [{"code": "INSURANCE", "parameter": "1000"}],
        "packages": [
            {
                "number": "1",
                "weight": 1,
                "length": 20,
                "width": 15,
                "height": 10,
                "comment": "Package 1",
            }
        ],
    }


def test_post_init_payment_returns_response_and_delegates_to_service() -> None:
    expected_response = InitPaymentResponse(payment_url="https://pay.test/payment/1")
    service = StubAggregatorService(response=expected_response)
    app = create_app()
    _install_service_override(app, service)

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=_valid_payload(),
            )

    response = asyncio.run(run_request())

    assert response.status_code == 200
    assert response.json() == expected_response.model_dump(mode="json")
    assert service.calls == [InitPaymentRequest(**_valid_payload())]


def test_post_init_payment_rejects_invalid_payload() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["tariff_code"] = 136

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_missing_price() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    del invalid_payload["price"]

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_non_positive_price() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["price"] = 0

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_non_integer_price() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["price"] = 125000.5

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_sender_company_field() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["sender"] = {
        **invalid_payload["sender"],  # type: ignore[arg-type]
        "company": "Romashka LLC",
    }

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_sender_phones_field() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["sender"] = {
        **invalid_payload["sender"],  # type: ignore[arg-type]
        "phones": [{"number": "+79009876543"}],
    }

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_recipient_company_field() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["recipient"] = {
        **invalid_payload["recipient"],  # type: ignore[arg-type]
        "company": "Romashka LLC",
    }

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_rejects_recipient_phones_field() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)
    invalid_payload = _valid_payload()
    invalid_payload["recipient"] = {
        **invalid_payload["recipient"],  # type: ignore[arg-type]
        "phones": [{"number": "+79001234567"}],
    }

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=invalid_payload,
            )

    response = asyncio.run(run_request())

    assert response.status_code == 422
    assert service.calls == []


def test_post_init_payment_accepts_request_without_services() -> None:
    expected_response = InitPaymentResponse(payment_url="https://pay.test/payment/1")
    service = StubAggregatorService(response=expected_response)
    app = create_app()
    _install_service_override(app, service)
    payload = _valid_payload()
    del payload["services"]

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post("/api/v1/delivery/init-payment", json=payload)

    response = asyncio.run(run_request())

    assert response.status_code == 200
    assert response.json() == expected_response.model_dump(mode="json")
    assert service.calls == [InitPaymentRequest(**payload)]


def test_post_init_payment_maps_invalid_request_to_400() -> None:
    service = StubAggregatorService(
        response=None,
        error=InvalidInitPaymentRequestError("invalid payload"),
    )
    app = create_app()
    _install_service_override(app, service)

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app, raise_app_exceptions=False)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=_valid_payload(),
            )

    response = asyncio.run(run_request())

    assert response.status_code == 400
    assert response.json() == {
        "detail": {
            "code": "invalid_init_payment_request",
            "message": "Payment request contains invalid or unsupported TBank data.",
        }
    }


def test_post_init_payment_maps_service_exception_to_503() -> None:
    service = StubAggregatorService(
        response=None,
        error=InitPaymentUnavailableError("service unavailable"),
    )
    app = create_app()
    _install_service_override(app, service)

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app, raise_app_exceptions=False)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post(
                "/api/v1/delivery/init-payment",
                json=_valid_payload(),
            )

    response = asyncio.run(run_request())

    assert response.status_code == 503
    assert response.json() == {
        "detail": {
            "code": "init_payment_unavailable",
            "message": "Payment initialization is temporarily unavailable.",
        }
    }


def test_delivery_order_endpoint_is_removed() -> None:
    service = StubAggregatorService(response=None)
    app = create_app()
    _install_service_override(app, service)

    async def run_request() -> httpx.Response:
        transport = httpx.ASGITransport(app=app)
        async with httpx.AsyncClient(
            transport=transport,
            base_url="http://testserver",
        ) as client:
            return await client.post("/api/v1/delivery/order", json=_valid_payload())

    response = asyncio.run(run_request())

    assert response.status_code == 404
    assert service.calls == []