"""Shared test fixtures."""
import asyncio
from uuid import uuid4

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

from app.db.base import Base, get_db
from app.main import app

TEST_DATABASE_URL = "postgresql+asyncpg://test:test@localhost:5432/test"


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


@pytest_asyncio.fixture(scope="session")
async def test_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(test_engine):
    SessionLocal = async_sessionmaker(test_engine, class_=AsyncSession, expire_on_commit=False)
    async with SessionLocal() as session:
        yield session
        # Clean up after each test
        await session.rollback()


@pytest_asyncio.fixture
async def client(db_session):
    """Test client with overridden DB dependency."""
    async def override_get_db():
        yield db_session

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


@pytest.fixture
def mock_user_id():
    return uuid4()


@pytest.fixture
def mock_jwt(mock_user_id):
    from app.core.security import create_access_token
    return create_access_token({"sub": str(mock_user_id), "email": "test@example.com", "roles": ["learner"]})