import pytest
from fastapi.testclient import TestClient
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

from app.main import app
from app.core.database import Base, get_db
from app.core.config import settings

# Use SQLite for testing
SQLALCHEMY_DATABASE_URL = "sqlite:///./test.db"
engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})
TestingSessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


def override_get_db():
    db = TestingSessionLocal()
    try:
        yield db
    finally:
        db.close()


app.dependency_overrides[get_db] = override_get_db
client = TestClient(app)


@pytest.fixture(scope="module", autouse=True)
def setup_db():
    Base.metadata.create_all(bind=engine)
    yield
    Base.metadata.drop_all(bind=engine)


def test_health_check():
    response = client.get("/health")
    assert response.status_code == 200
    assert response.json()["status"] == "ok"


def test_login():
    response = client.post("/api/v1/auth/login", json={"username": "admin", "password": "admin123"})
    assert response.status_code == 200
    data = response.json()
    assert data["code"] == 200
    assert "access_token" in data["data"]
    return data["data"]["access_token"]


def test_get_me():
    token = test_login()
    response = client.get("/api/v1/users/me", headers={"Authorization": f"Bearer {token}"})
    assert response.status_code == 200
    data = response.json()
    assert data["data"]["username"] == "admin"


def test_list_levels():
    token = test_login()
    response = client.get("/api/v1/classifications/levels", headers={"Authorization": f"Bearer {token}"})
    assert response.status_code == 200
    data = response.json()
    assert len(data["data"]) == 5