from collections.abc import AsyncIterator

import pytest
from fastapi.testclient import TestClient

from app.config import Settings
from app.main import create_app
from app.models import CurrentStatus, MonitorState, utc_now


class FakeChecker:
    async def check(self, monitor_id: str, target_url: str) -> CurrentStatus:
        return CurrentStatus(
            state=MonitorState.UP,
            checked_at=utc_now(),
            latency_ms=3.5,
            http_status=204,
        )


@pytest.fixture
def anyio_backend() -> str:
    return "asyncio"


@pytest.fixture
def client() -> AsyncIterator[TestClient]:
    with TestClient(create_app(Settings(), checker=FakeChecker())) as test_client:  # type: ignore[arg-type]
        yield test_client