"""Test configuration and fixtures.

Tests run against a real PostgreSQL instance (docker-compose test stack).
The DATABASE_URL and MALS_API_KEY are read from environment / .env.test.
If not set, pytest will skip DB-dependent tests gracefully.
"""

from __future__ import annotations

import asyncio
import os
from unittest.mock import AsyncMock, MagicMock, patch

import pytest
from httpx import ASGITransport, AsyncClient

# Set required env vars before importing the app
os.environ.setdefault("DATABASE_URL", "postgresql+asyncpg://mals:mals@localhost:5434/mals")
os.environ.setdefault("MALS_API_KEY", "test-secret-key")

from mals.main import app  # noqa: E402

TEST_API_KEY = os.environ["MALS_API_KEY"]
AUTH_HEADERS = {"Authorization": f"Bearer {TEST_API_KEY}"}


# ---------------------------------------------------------------------------
# Async HTTP client fixtures
# ---------------------------------------------------------------------------

@pytest.fixture
async def async_client() -> AsyncClient:
    """Async HTTPX client backed by the ASGI app — no real DB needed for unit tests."""
    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        yield client


# ---------------------------------------------------------------------------
# Mocked DB pool fixture
# ---------------------------------------------------------------------------

@pytest.fixture
def mock_pool():
    """Return a mock asyncpg pool for unit tests that don't need a real DB."""
    pool = MagicMock()
    conn = AsyncMock()
    pool.acquire.return_value.__aenter__ = AsyncMock(return_value=conn)
    pool.acquire.return_value.__aexit__ = AsyncMock(return_value=False)
    return pool, conn