"""Integration tests for auth endpoints using in-memory DuckDB."""
from app.main import app
from app import db as db_module
from httpx import AsyncClient, ASGITransport
import os
import pytest
import pytest_asyncio

os.environ.setdefault("JWT_SECRET", "test-secret-key-for-testing-only")


@pytest.fixture(autouse=True)
def fresh_db():
    """Reset the DB singleton to a fresh in-memory DB for each test."""
    db_module._conn = None
    db_module.init_db(":memory:")
    yield
    db_module.close_db()
    db_module._conn = None


@pytest_asyncio.fixture
async def client(fresh_db):
    """HTTP client wired to the app; explicitly depends on fresh_db to guarantee ordering."""
    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://test") as ac:
        yield ac


async def test_register_success(client):
    resp = await client.post("/auth/register", json={"email": "user@example.com", "password": "secret123"})
    assert resp.status_code == 201
    data = resp.json()
    assert data["email"] == "user@example.com"
    assert data["role"] == "user"
    assert "id" in data


async def test_register_duplicate_email(client):
    payload = {"email": "dup@example.com", "password": "secret123"}
    await client.post("/auth/register", json=payload)
    resp = await client.post("/auth/register", json=payload)
    assert resp.status_code == 409


async def test_login_success(client):
    await client.post("/auth/register", json={"email": "user@example.com", "password": "secret123"})
    resp = await client.post("/auth/login", json={"email": "user@example.com", "password": "secret123"})
    assert resp.status_code == 200
    data = resp.json()
    assert "access_token" in data
    assert "refresh_token" in data
    assert data["token_type"] == "bearer"


async def test_login_wrong_password(client):
    await client.post("/auth/register", json={"email": "user@example.com", "password": "secret123"})
    resp = await client.post("/auth/login", json={"email": "user@example.com", "password": "wrong"})
    assert resp.status_code == 401


async def test_login_unknown_user(client):
    resp = await client.post("/auth/login", json={"email": "nobody@example.com", "password": "x"})
    assert resp.status_code == 401


async def test_refresh_success(client):
    await client.post("/auth/register", json={"email": "user@example.com", "password": "secret123"})
    login = await client.post("/auth/login", json={"email": "user@example.com", "password": "secret123"})
    refresh_token = login.json()["refresh_token"]

    resp = await client.post("/auth/refresh", json={"refresh_token": refresh_token})
    assert resp.status_code == 200
    data = resp.json()
    assert "access_token" in data
    assert "refresh_token" in data
    # New refresh token must differ (rotation)
    assert data["refresh_token"] != refresh_token


async def test_refresh_revoked_token(client):
    await client.post("/auth/register", json={"email": "user@example.com", "password": "secret123"})
    login = await client.post("/auth/login", json={"email": "user@example.com", "password": "secret123"})
    refresh_token = login.json()["refresh_token"]

    # Use once (rotates)
    await client.post("/auth/refresh", json={"refresh_token": refresh_token})
    # Try to reuse old token — must fail
    resp = await client.post("/auth/refresh", json={"refresh_token": refresh_token})
    assert resp.status_code == 401


async def test_logout_success(client):
    await client.post("/auth/register", json={"email": "user@example.com", "password": "secret123"})
    login = await client.post("/auth/login", json={"email": "user@example.com", "password": "secret123"})
    refresh_token = login.json()["refresh_token"]

    resp = await client.post("/auth/logout", json={"refresh_token": refresh_token})
    assert resp.status_code == 204

    # Refresh after logout must fail
    resp2 = await client.post("/auth/refresh", json={"refresh_token": refresh_token})
    assert resp2.status_code == 401