"""R4: email case-normalisation at the auth API boundary.

Storage/lookup (`SQLiteUserRepository.get_by_email`) is case-sensitive, so
without normalisation `Foo@x.se` and `foo@x.se` would register as two
distinct accounts. `RegisterRequest`/`LoginRequest` (`app/models/auth.py`)
now lowercase `email` via a field validator — these tests drive the real
app over HTTP (same technique as `tests/integration/test_user_journey.py`)
to prove that boundary actually normalises, rather than only unit-testing
the validator in isolation.
"""

from __future__ import annotations

import aiosqlite
import pytest
import pytest_asyncio
from httpx import ASGITransport, AsyncClient

from app.dependencies import get_connection
from app.main import app
from app.rate_limit import limiter

_PASSWORD = "correct horse battery staple"


@pytest.fixture(autouse=True)
def _reset_rate_limiter() -> None:
    """`/api/auth/register` and `/api/auth/login` are limited to 10/minute,
    keyed on client IP (`app/rate_limit.py`). In the full suite, every test
    file that POSTs to either endpoint shares that one in-memory bucket for
    127.0.0.1 (see `tests/integration/test_user_journey.py`'s comment on the
    same issue) — by the time this file runs, other files may have already
    spent it. Reset the limiter's storage before each test here rather than
    disabling enforcement, so these tests still exercise the real
    middleware stack; this is exactly `Limiter.reset()`'s documented purpose.
    """
    limiter.reset()


@pytest_asyncio.fixture
async def client(connection: aiosqlite.Connection) -> AsyncClient:
    """Real app over HTTP, with `get_connection` swapped for the in-memory
    test connection — see `tests/integration/test_user_journey.py`'s fixture
    of the same name."""
    app.dependency_overrides[get_connection] = lambda: connection
    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as ac:
        yield ac
    app.dependency_overrides.pop(get_connection, None)


async def test_register_lowercases_email(client: AsyncClient) -> None:
    resp = await client.post(
        "/api/auth/register",
        json={"email": "Mixed.Case@Example.COM", "password": _PASSWORD, "display_name": "A"},
    )
    assert resp.status_code == 201, resp.text


async def test_login_with_different_case_resolves_to_same_account(client: AsyncClient) -> None:
    register_resp = await client.post(
        "/api/auth/register",
        json={"email": "Case.Test@Example.com", "password": _PASSWORD, "display_name": "A"},
    )
    assert register_resp.status_code == 201, register_resp.text

    login_resp = await client.post(
        "/api/auth/login",
        json={"email": "CASE.TEST@EXAMPLE.COM", "password": _PASSWORD},
    )
    assert login_resp.status_code == 200, login_resp.text
    assert "access_token" in login_resp.json()


async def test_registering_same_address_in_different_case_is_rejected_as_duplicate(
    client: AsyncClient,
) -> None:
    first = await client.post(
        "/api/auth/register",
        json={"email": "dupe@example.com", "password": _PASSWORD, "display_name": "First"},
    )
    assert first.status_code == 201, first.text

    second = await client.post(
        "/api/auth/register",
        json={"email": "DUPE@EXAMPLE.COM", "password": _PASSWORD, "display_name": "Second"},
    )
    assert second.status_code == 409, second.text


async def test_context_includes_take_pl_on_red_days_default_false(client: AsyncClient) -> None:
    """H12 step 1: `/auth/context` must carry the same red-days flag
    `GET /workspace/:id` does, so the frontend can drop that second cold-load
    call. A freshly registered workspace defaults to `False`."""
    register_resp = await client.post(
        "/api/auth/register",
        json={"email": "red-days@example.com", "password": _PASSWORD, "display_name": "A"},
    )
    assert register_resp.status_code == 201, register_resp.text
    headers = {"Authorization": f"Bearer {register_resp.json()['access_token']}"}

    ctx_resp = await client.get("/api/auth/context", headers=headers)
    assert ctx_resp.status_code == 200, ctx_resp.text
    assert ctx_resp.json()["take_pl_on_red_days"] is False


async def test_context_reflects_take_pl_on_red_days_after_workspace_update(
    client: AsyncClient,
) -> None:
    """Once the workspace's flag is flipped via `PUT /workspace/:id`, the
    context endpoint must reflect that new value, not a stale default —
    this is what `Settings.tsx`'s red-days toggle relies on after it saves."""
    register_resp = await client.post(
        "/api/auth/register",
        json={"email": "red-days-2@example.com", "password": _PASSWORD, "display_name": "A"},
    )
    assert register_resp.status_code == 201, register_resp.text
    headers = {"Authorization": f"Bearer {register_resp.json()['access_token']}"}

    ctx_resp = await client.get("/api/auth/context", headers=headers)
    assert ctx_resp.status_code == 200, ctx_resp.text
    workspace_id = ctx_resp.json()["workspace_id"]

    update_resp = await client.put(
        f"/api/workspace/{workspace_id}",
        headers=headers,
        json={"take_pl_on_red_days": True},
    )
    assert update_resp.status_code == 200, update_resp.text

    ctx_resp_2 = await client.get("/api/auth/context", headers=headers)
    assert ctx_resp_2.status_code == 200, ctx_resp_2.text
    assert ctx_resp_2.json()["take_pl_on_red_days"] is True