import pytest
import asyncio
from httpx import AsyncClient, ASGITransport
from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
from app.main import app
from app.core.database import Base, get_db
from app.core.security import get_password_hash
from app.models.user import User, UserRole

TEST_DB_URL = "postgresql+asyncpg://postgres:postgres@localhost:5432/conai_test"

test_engine = create_async_engine(TEST_DB_URL, echo=False)
TestSessionLocal = async_sessionmaker(test_engine, class_=AsyncSession, expire_on_commit=False)


@pytest.fixture(scope="session")
def event_loop():
    loop = asyncio.get_event_loop_policy().new_event_loop()
    yield loop
    loop.close()


@pytest.fixture(scope="session")
async def db_setup():
    async with test_engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)
    yield
    async with test_engine.begin() as conn:
        await conn.run_sync(Base.metadata.drop_all)


@pytest.fixture
async def db(db_setup):
    async with TestSessionLocal() as session:
        yield session
        await session.rollback()


@pytest.fixture
async def client(db):
    async def override_get_db():
        yield db

    app.dependency_overrides[get_db] = override_get_db
    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as ac:
        yield ac
    app.dependency_overrides.clear()


@pytest.fixture
async def test_user(db):
    user = User(
        email="test@conai.app",
        hashed_password=get_password_hash("testpass123"),
        name="테스트 현장소장",
        role=UserRole.SITE_MANAGER,
    )
    db.add(user)
    await db.commit()
    await db.refresh(user)
    return user


@pytest.fixture
async def auth_headers(client, test_user):
    resp = await client.post("/api/v1/auth/login", data={"username": "test@conai.app", "password": "testpass123"})
    token = resp.json()["access_token"]
    return {"Authorization": f"Bearer {token}"}