from collections.abc import AsyncIterator

import pytest
import pytest_asyncio
from asgi_lifespan import LifespanManager
from fastapi import FastAPI
from httpx import ASGITransport, AsyncClient

from src.config import Settings
from src.main import create_app


@pytest.fixture
def settings() -> Settings:
    # Every external dependency points at a closed port so unit tests never
    # reach real infrastructure. For the embedders this matters twice over:
    # the real defaults are a colleague's Ollama box and OpenAI's paid API,
    # and ADR-0016 forbids routine runs calling either. Connection-refused is
    # immediate, so the lifespan's fail-soft warm-up costs nothing here --
    # and these tests passing at all is what proves it is fail-soft.
    return Settings(
        postgres={"host": "127.0.0.1", "port": 1},
        minio={"endpoint": "127.0.0.1:1"},
        ingestion={"timeout_seconds": 1.0},
        qdrant={"url": "http://127.0.0.1:1"},
        app={"readiness_check_timeout_seconds": 0.5},
        embedding={
            "nomic": {"base_url": "http://127.0.0.1:1/v1", "timeout_seconds": 0.5},
            "openai": {"base_url": "http://127.0.0.1:1/v1", "timeout_seconds": 0.5},
        },
    )


@pytest.fixture
def app(settings: Settings) -> FastAPI:
    return create_app(settings)


@pytest_asyncio.fixture
async def client(app: FastAPI) -> AsyncIterator[AsyncClient]:
    async with (
        LifespanManager(app) as manager,
        AsyncClient(
            transport=ASGITransport(app=manager.app), base_url="http://test"
        ) as async_client,
    ):
        yield async_client