"""Offline-тесты POST /api/v1/trade-in/lead (#2376, sub-issue родителя #1971).

Покрытие (db мокается, NO live network/DB):
  - happy path: consent=True + валидный телефон -> 200, INSERT + commit
  - consent=False -> 422 (Literal[True] guard)
  - невалидный формат телефона -> 422
  - телефон без цифр / слишком мало цифр -> 422 (digit-guard, #2376 hardening)
  - source="landing" (мёртвая воронка) -> 422 (литерал убран из схемы)
  - estimate_id, которого нет в trade_in_estimates -> 404
  - IDOR guard (security-audit, зеркалит #690/test_estimate_idor.py): estimate_id
    чужого пользователя -> 404; admin может привязать любой; нет
    X-Authenticated-User -> 401; неизвестная роль -> 403
"""

from __future__ import annotations

import os

os.environ.setdefault("DATABASE_URL", "postgresql+psycopg://test:test@localhost:5432/test")

from datetime import UTC, datetime
from types import SimpleNamespace
from typing import Any
from unittest.mock import MagicMock
from uuid import uuid4

import pytest
from fastapi import FastAPI
from fastapi.testclient import TestClient


@pytest.fixture
def db() -> MagicMock:
    return MagicMock()


@pytest.fixture
def client(db: MagicMock) -> TestClient:
    from app.api.v1 import lead as lead_module
    from app.core.db import get_db

    app = FastAPI()
    app.include_router(lead_module.router, prefix="/api/v1/trade-in")

    def fake_db() -> Any:
        yield db

    app.dependency_overrides[get_db] = fake_db
    return TestClient(app)


@pytest.fixture(autouse=True)
def _restore_get_role():
    """Restore app.core.auth.get_role after each test (mirror test_estimate_idor.py)."""
    from app.core import auth as auth_mod

    original = auth_mod.get_role
    yield
    auth_mod.get_role = original


def _insert_result(lead_id: str) -> MagicMock:
    result = MagicMock()
    result.mappings.return_value.one.return_value = {
        "id": lead_id,
        "created_at": datetime(2026, 7, 4, 12, 0, tzinfo=UTC),
    }
    return result


def test_lead_happy_path(client: TestClient, db: MagicMock) -> None:
    from app.api.v1 import lead as lead_module

    lead_id = str(uuid4())
    db.execute.return_value = _insert_result(lead_id)

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+7 (912) 345-67-89", "consent": True},
        headers={"x-forwarded-for": "203.0.113.7, 10.0.0.1"},
    )
    assert r.status_code == 200, r.text
    body = r.json()
    assert body["id"] == lead_id
    assert body["status"] == "received"
    assert db.commit.called

    params = db.execute.call_args.args[1]
    assert params["phone"] == "+7 (912) 345-67-89"
    assert params["consent"] is True
    assert params["source"] == "result"
    assert params["estimate_id"] is None
    # 152-ФЗ proof-of-consent (migration 182): client_ip / policy version / text
    # snapshot must reach the INSERT params, not just the audit log (#2497 TODO).
    assert params["client_ip"] == "203.0.113.7"  # first hop of X-Forwarded-For
    assert params["consent_policy_version"] == lead_module._CONSENT_POLICY_VERSION
    assert params["consent_text_snapshot"] == lead_module._CONSENT_TEXT_SNAPSHOT


def test_lead_client_ip_falls_back_to_peer_when_no_xff(client: TestClient, db: MagicMock) -> None:
    # No X-Forwarded-For header -> falls back to request.client.host (TestClient
    # reports "testclient"), still persisted rather than silently None.
    lead_id = str(uuid4())
    db.execute.return_value = _insert_result(lead_id)

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True},
    )
    assert r.status_code == 200, r.text

    params = db.execute.call_args.args[1]
    assert params["client_ip"] == "testclient"


def test_lead_consent_false_422(client: TestClient, db: MagicMock) -> None:
    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": False},
    )
    assert r.status_code == 422
    assert not db.execute.called


def test_lead_consent_missing_422(client: TestClient) -> None:
    r = client.post("/api/v1/trade-in/lead", json={"phone": "+79123456789"})
    assert r.status_code == 422


def test_lead_invalid_phone_422(client: TestClient) -> None:
    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "not-a-phone!!", "consent": True},
    )
    assert r.status_code == 422


def test_lead_with_unknown_estimate_id_404(client: TestClient, db: MagicMock) -> None:
    result = MagicMock()
    result.fetchone.return_value = None
    db.execute.return_value = result

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True, "estimate_id": str(uuid4())},
    )
    assert r.status_code == 404
    assert not db.commit.called


def test_lead_with_known_estimate_id_200(client: TestClient, db: MagicMock) -> None:
    """Owner привязывает лид к своей же оценке -> 200."""
    from app.core import auth as auth_mod

    auth_mod.get_role = lambda _u: "pilot"  # type: ignore[assignment]

    lead_id = str(uuid4())
    exists_result = MagicMock()
    exists_result.fetchone.return_value = SimpleNamespace(created_by="kopylov")
    db.execute.side_effect = [exists_result, _insert_result(lead_id)]

    estimate_id = str(uuid4())
    r = client.post(
        "/api/v1/trade-in/lead",
        json={
            "phone": "+79123456789",
            "consent": True,
            "estimate_id": estimate_id,
        },
        headers={"X-Authenticated-User": "kopylov"},
    )
    assert r.status_code == 200, r.text
    params = db.execute.call_args.args[1]
    assert params["estimate_id"] == estimate_id
    assert params["source"] == "result"


# ── IDOR guard (security-audit): estimate_id ownership ─────────────────────────


def test_lead_estimate_id_owned_by_other_user_gets_404(client: TestClient, db: MagicMock) -> None:
    """Чужой estimate_id -> 404 (существование не подтверждаем), лид НЕ создаётся."""
    from app.core import auth as auth_mod

    auth_mod.get_role = lambda _u: "pilot"  # type: ignore[assignment]

    exists_result = MagicMock()
    exists_result.fetchone.return_value = SimpleNamespace(created_by="victim")
    db.execute.return_value = exists_result

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True, "estimate_id": str(uuid4())},
        headers={"X-Authenticated-User": "attacker"},
    )
    assert r.status_code == 404, r.text
    assert not db.commit.called


def test_lead_estimate_id_admin_can_attach_any_200(client: TestClient, db: MagicMock) -> None:
    """Admin может привязать лид к чужой оценке (owner-or-admin, зеркалит #690)."""
    from app.core import auth as auth_mod

    auth_mod.get_role = lambda _u: "admin"  # type: ignore[assignment]

    lead_id = str(uuid4())
    exists_result = MagicMock()
    exists_result.fetchone.return_value = SimpleNamespace(created_by="someone_else")
    db.execute.side_effect = [exists_result, _insert_result(lead_id)]

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True, "estimate_id": str(uuid4())},
        headers={"X-Authenticated-User": "admin"},
    )
    assert r.status_code == 200, r.text


def test_lead_estimate_id_requires_authenticated_user_401(
    client: TestClient, db: MagicMock
) -> None:
    """estimate_id задан, но нет X-Authenticated-User -> 401 (defense-in-depth: в
    проде rbac_guard уже требует заголовок раньше, см. app/main.py)."""
    exists_result = MagicMock()
    exists_result.fetchone.return_value = SimpleNamespace(created_by="kopylov")
    db.execute.return_value = exists_result

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True, "estimate_id": str(uuid4())},
    )
    assert r.status_code == 401, r.text
    assert not db.commit.called


def test_lead_estimate_id_unknown_role_403(client: TestClient, db: MagicMock) -> None:
    """Аутентифицирован через Caddy, но роль отсутствует в roles.yaml -> 403."""
    from app.core import auth as auth_mod

    def _raise_keyerror(_u: str):
        raise KeyError(_u)

    auth_mod.get_role = _raise_keyerror  # type: ignore[assignment]

    exists_result = MagicMock()
    exists_result.fetchone.return_value = SimpleNamespace(created_by="kopylov")
    db.execute.return_value = exists_result

    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True, "estimate_id": str(uuid4())},
        headers={"X-Authenticated-User": "ghost"},
    )
    assert r.status_code == 403, r.text
    assert not db.commit.called


def test_lead_digit_free_phone_422(client: TestClient, db: MagicMock) -> None:
    # "(()) -- .." проходит regex-маску (только +/скобки/дефисы/точки/пробелы),
    # но содержит 0 цифр -> должно отклоняться digit-валидатором.
    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "(()) -- ..", "consent": True},
    )
    assert r.status_code == 422, r.text
    assert not db.execute.called


def test_lead_too_few_digits_phone_422(client: TestClient, db: MagicMock) -> None:
    # 6 цифр < минимума 10 -> 422 (маску проходит по длине, digit-guard режет).
    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "123-456", "consent": True},
    )
    assert r.status_code == 422, r.text
    assert not db.execute.called


def test_lead_source_landing_rejected_422(client: TestClient, db: MagicMock) -> None:
    # "landing"-воронка недостижима (rbac_guard закрывает /lead) — литерал убран
    # из схемы, поэтому явный source="landing" теперь 422.
    r = client.post(
        "/api/v1/trade-in/lead",
        json={"phone": "+79123456789", "consent": True, "source": "landing"},
    )
    assert r.status_code == 422, r.text
    assert not db.execute.called