"""Shared test fixtures for all backend tests.

App factory pattern (FUND-8): each test gets a fresh app instance.
FUND-9: TestClient manages lifespan.
FUND-10: dependency_overrides cleared after every test.
"""

import pytest

from app.config import Settings
from app.db import engine
from app.main import create_app


@pytest.fixture(autouse=True)
def _test_db() -> None:
    """Set up a fresh in-memory SQLite database for each test."""
    engine.set_test_url("sqlite+aiosqlite:///:memory:")
    yield
    engine._test_url = None
    engine._engine = None
    engine._session_factory = None


@pytest.fixture
def settings() -> Settings:
    """Create test settings with in-memory SQLite."""
    return Settings(
        aes_key="dGVzdC1rZXktZm9yLW1hbGxlb3AtdGVzdGluZy1vbmx5LXNob3VsZC1iZS11c2Vk",  # 32 bytes base64
        woo_base_url="https://test.example.com",
        app_hostname="test.local",
    )


@pytest.fixture
def app(settings: Settings) -> None:
    """Yield a fresh FastAPI app with test settings, then clean up.

    Each test gets its own app instance (FUND-8).
    TestClient manages the lifespan (FUND-9).
    dependency_overrides are cleared after each test (FUND-10).
    """
    app_instance = create_app(settings)
    yield app_instance
    app_instance.dependency_overrides.clear()