import asyncio
import uuid

import pytest
import pytest_asyncio
from httpx import ASGITransport, AsyncClient
from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine

from app.config import settings
from app.database import get_db
from app.main import app
from app.models import Base
from app.services.auth import create_access_token

TEST_DB_URL = settings.database_url.replace("/meetproto", "/meetproto_test")

engine_test = create_async_engine(TEST_DB_URL, echo=False)
async_session_test = async_sessionmaker(engine_test, expire_on_commit=False)


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


@pytest_asyncio.fixture(autouse=True)
async def setup_db():
    async with engine_test.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)
    yield
    async with engine_test.begin() as conn:
        await conn.run_sync(Base.metadata.drop_all)


async def override_get_db():
    async with async_session_test() as session:
        yield session


app.dependency_overrides[get_db] = override_get_db


@pytest_asyncio.fixture
async def client():
    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://test") as c:
        yield c


@pytest_asyncio.fixture
async def auth_client(client: AsyncClient):
    resp = await client.post("/api/auth/register", json={
        "username": f"testuser_{uuid.uuid4().hex[:8]}",
        "email": f"test_{uuid.uuid4().hex[:8]}@example.com",
        "password": "testpass123",
    })
    token = (await client.post("/api/auth/login", json={
        "username": resp.json()["username"],
        "password": "testpass123",
    })).json()["access_token"]
    client.headers["Authorization"] = f"Bearer {token}"
    yield client