"""POST /auth/login and require_user_auth: success, wrong token, unknown user, whitespace."""
from __future__ import annotations

import shutil
import sys
from pathlib import Path

import pytest
from fastapi.testclient import TestClient

_SEED = Path(__file__).resolve().parent.parent / "deploy/hf/seed/hf_bundled_store.db"


@pytest.fixture()
def api_client(tmp_path: Path, monkeypatch: pytest.MonkeyPatch):
    assert _SEED.is_file(), f"Missing seed DB: {_SEED}"
    dest = tmp_path / "auth_login_store.db"
    shutil.copyfile(_SEED, dest)
    monkeypatch.setenv("KINK_STORE_PATH", str(dest))
    monkeypatch.setenv("KINK_SKIP_HEAVY_WARM", "1")
    monkeypatch.setenv("KINK_HF_REQUIRE_FULL_CATALOG", "0")
    sys.modules.pop("api", None)
    import api as api_mod

    api_mod._backend_impl = None
    api_mod._get_backend()
    return api_mod


def test_login_success(api_client) -> None:
    client = TestClient(api_client.app)
    u = client.post("/users", json={}).json()
    r = client.post(
        "/auth/login",
        json={"user_id": u["id"], "private_token": u["private_token"]},
    )
    assert r.status_code == 200
    body = r.json()
    assert body["user"]["id"] == u["id"]
    assert body["private_token"] == u["private_token"]


def test_login_wrong_token_still_401(api_client) -> None:
    client = TestClient(api_client.app)
    u = client.post("/users", json={}).json()
    r = client.post(
        "/auth/login",
        json={"user_id": u["id"], "private_token": "not-the-real-token"},
    )
    assert r.status_code == 401
    assert r.json().get("detail") == "Invalid credentials"


def test_login_unknown_user_404_not_wrong_password(api_client) -> None:
    """Unknown id must not read as 'wrong password' (HF ephemeral DB wipe UX)."""
    client = TestClient(api_client.app)
    r = client.post(
        "/auth/login",
        json={"user_id": "no-such-profile-00", "private_token": "any-token"},
    )
    assert r.status_code == 404
    detail = r.json().get("detail", "")
    assert "Unknown profile" in detail
    assert "ephemeral" in detail.lower()


def test_new_user_has_recommendations_on_hf_seed(api_client) -> None:
    """Playwright e2e depends on a non-empty starter deck from ``/recommendations``."""
    client = TestClient(api_client.app)
    u = client.post("/users", json={}).json()
    r = client.get(
        f"/users/{u['id']}/recommendations?limit=8",
        headers={"x-private-token": u["private_token"]},
    )
    assert r.status_code == 200
    assert len(r.json().get("items", [])) >= 1


def test_create_profile_then_get_user_immediately(api_client) -> None:
    """UI: POST /users then GET /users/:id with token — must not 404/401 (HF create-profile flow)."""
    client = TestClient(api_client.app)
    u = client.post("/users", json={}).json()
    uid = u["id"]
    tok = u["private_token"]
    r = client.get(f"/users/{uid}", headers={"x-private-token": tok})
    assert r.status_code == 200
    body = r.json()
    assert body["id"] == uid


def test_login_strips_whitespace_on_body_fields(api_client) -> None:
    client = TestClient(api_client.app)
    u = client.post("/users", json={}).json()
    r = client.post(
        "/auth/login",
        json={
            "user_id": f"  {u['id']} \n",
            "private_token": f" {u['private_token']} ",
        },
    )
    assert r.status_code == 200