from sqlalchemy import select

from app.models import AuditEvent

STRONG_PASSWORD = "Kz8#Fj2!Lm9@Qw4$xR"
CREDENTIALS = {"email": "alice@example.com", "password": STRONG_PASSWORD}


# слабый пароль не регистрируется;
def test_register_weak_password_returns_400(client):
    resp = client.post(
        "/auth/register", json={"email": "weak@example.com", "password": "password"}
    )
    assert resp.status_code == 400


def test_register_strong_password_returns_token(client):
    resp = client.post("/auth/register", json=CREDENTIALS)
    assert resp.status_code == 201
    body = resp.json()
    assert body["access_token"]
    assert body["token_type"] == "bearer"


def test_register_then_login(client):
    client.post("/auth/register", json=CREDENTIALS)
    resp = client.post("/auth/login", json=CREDENTIALS)
    assert resp.status_code == 200
    assert resp.json()["access_token"]


# логин с неверным паролем возвращает 401 и не раскрывает, какое именно поле неверно;
def test_login_wrong_password_returns_401(client):
    client.post("/auth/register", json=CREDENTIALS)
    resp = client.post(
        "/auth/login",
        json={"email": CREDENTIALS["email"], "password": "completely-wrong"},
    )
    assert resp.status_code == 401
    assert resp.json()["detail"] == "Invalid credentials"


def test_register_duplicate_email_returns_409(client):
    client.post("/auth/register", json=CREDENTIALS)
    resp = client.post("/auth/register", json=CREDENTIALS)
    assert resp.status_code == 409


# `/auth/me` без токена → 401;
def test_me_requires_token(client):
    resp = client.get("/auth/me")
    assert resp.status_code == 401


def test_me_with_token(client):
    token = client.post("/auth/register", json=CREDENTIALS).json()["access_token"]
    resp = client.get("/auth/me", headers={"Authorization": f"Bearer {token}"})
    assert resp.status_code == 200
    body = resp.json()
    assert body["email"] == CREDENTIALS["email"]
    assert body["is_admin"] is False
    assert isinstance(body["id"], int)


# после успешного логина в таблице `audit_events` появляется `user.login.success`.
def test_successful_login_records_audit_event(client, db_session):
    client.post("/auth/register", json=CREDENTIALS)
    client.post("/auth/login", json=CREDENTIALS)
    event = db_session.scalar(
        select(AuditEvent).where(AuditEvent.event_type == "user.login.success")
    )
    assert event is not None