"""Тесты `app.services.payments.notification` — строгий разбор нотификации.

`parse_notification()` вызывается ПОСЛЕ `verify_notification_token(...) is True`
(эта функция подпись не проверяет) — тесты здесь работают с payload напрямую,
без пересчёта подписи.
"""

from __future__ import annotations

import pytest

from app.services.payments.notification import (
    NotificationParseError,
    TBankNotification,
    parse_notification,
)

_VALID_PAYLOAD = {
    "TerminalKey": "1234567890DEMO",
    "OrderId": "order-1",
    "Success": True,
    "Status": "CONFIRMED",
    "PaymentId": "0000000",
    "Amount": 111100,
    "Token": "irrelevant-here",
}


# ── happy path ────────────────────────────────────────────────────────────────


def test_parse_notification_happy_path_returns_typed_object() -> None:
    result = parse_notification(_VALID_PAYLOAD)

    assert isinstance(result, TBankNotification)
    assert result.success is True
    assert result.status == "CONFIRMED"
    assert result.order_id == "order-1"
    assert result.payment_id == "0000000"
    assert result.terminal_key == "1234567890DEMO"
    assert result.amount_kopecks == 111100


def test_parse_notification_ignores_extra_fields() -> None:
    """Лишние поля (ErrorCode, CardId, Pan, ...) в payload не мешают разбору."""
    payload = {**_VALID_PAYLOAD, "ErrorCode": "0", "CardId": "000000", "Pan": "200000******0000"}
    result = parse_notification(payload)
    assert result.order_id == "order-1"


# ── payload не dict ─────────────────────────────────────────────────────────


def test_parse_notification_rejects_non_dict_payload() -> None:
    with pytest.raises(NotificationParseError):
        parse_notification([_VALID_PAYLOAD])  # type: ignore[arg-type]


# ── Success: только настоящий bool ──────────────────────────────────────────


def test_parse_notification_rejects_success_as_string_true() -> None:
    payload = {**_VALID_PAYLOAD, "Success": "true"}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


def test_parse_notification_rejects_success_as_int_one() -> None:
    payload = {**_VALID_PAYLOAD, "Success": 1}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


def test_parse_notification_rejects_missing_success() -> None:
    payload = {k: v for k, v in _VALID_PAYLOAD.items() if k != "Success"}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


# ── Amount: только int, bool отдельно отсекается ────────────────────────────


def test_parse_notification_rejects_amount_as_bool_true() -> None:
    """`bool` — подкласс `int` в Python, поэтому отсекается ДО общей int-проверки."""
    payload = {**_VALID_PAYLOAD, "Amount": True}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


def test_parse_notification_rejects_amount_as_bool_false() -> None:
    payload = {**_VALID_PAYLOAD, "Amount": False}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


def test_parse_notification_rejects_amount_as_float() -> None:
    payload = {**_VALID_PAYLOAD, "Amount": 111100.0}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


def test_parse_notification_rejects_amount_as_string() -> None:
    payload = {**_VALID_PAYLOAD, "Amount": "111100"}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


# ── строковые поля: только непустой str ─────────────────────────────────────


@pytest.mark.parametrize("field", ["Status", "OrderId", "PaymentId", "TerminalKey"])
def test_parse_notification_rejects_empty_string_field(field: str) -> None:
    payload = {**_VALID_PAYLOAD, field: ""}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


@pytest.mark.parametrize("field", ["Status", "OrderId", "PaymentId", "TerminalKey"])
def test_parse_notification_rejects_non_string_field(field: str) -> None:
    payload = {**_VALID_PAYLOAD, field: 12345}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


@pytest.mark.parametrize("field", ["Status", "OrderId", "PaymentId", "TerminalKey"])
def test_parse_notification_rejects_missing_field(field: str) -> None:
    payload = {k: v for k, v in _VALID_PAYLOAD.items() if k != field}
    with pytest.raises(NotificationParseError):
        parse_notification(payload)


def test_parse_notification_result_is_frozen() -> None:
    """`TBankNotification` — frozen dataclass, случайная мутация после разбора невозможна."""
    result = parse_notification(_VALID_PAYLOAD)
    with pytest.raises(AttributeError):
        result.amount_kopecks = 1  # type: ignore[misc]