"""Pytest fixtures for Hub tests."""

import asyncio
from collections.abc import AsyncGenerator
from typing import Generator

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

from app.config import settings
from app.db import get_db
from app.main import app
from app.models import Base

# Use SQLite for testing
TEST_DATABASE_URL = "sqlite+aiosqlite:///:memory:"


@pytest.fixture(scope="session")
def event_loop() -> Generator[asyncio.AbstractEventLoop, None, None]:
    """Create event loop for async tests."""
    loop = asyncio.get_event_loop_policy().new_event_loop()
    yield loop
    loop.close()


@pytest_asyncio.fixture
async def db_engine():
    """Create test database engine."""
    engine = create_async_engine(
        TEST_DATABASE_URL,
        echo=False,
    )

    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)

    yield engine

    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.drop_all)

    await engine.dispose()


@pytest_asyncio.fixture
async def db_session(db_engine) -> AsyncGenerator[AsyncSession, None]:
    """Create test database session."""
    async_session = async_sessionmaker(
        db_engine,
        class_=AsyncSession,
        expire_on_commit=False,
    )

    async with async_session() as session:
        yield session


@pytest_asyncio.fixture
async def client(db_session: AsyncSession) -> AsyncGenerator[AsyncClient, None]:
    """Create test HTTP client."""

    async def override_get_db():
        yield db_session

    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
def admin_headers() -> dict[str, str]:
    """Return admin authentication headers."""
    return {"X-Admin-Api-Key": settings.ADMIN_API_KEY}