"""task-watcher FastAPI entry — health + lifespan (watcher loop spawn)."""
from __future__ import annotations

import asyncio
import logging
from contextlib import asynccontextmanager

from fastapi import FastAPI

import watcher

logging.basicConfig(level=logging.INFO, format="%(asctime)s %(name)s %(levelname)s %(message)s")
logger = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    watcher_task = asyncio.create_task(watcher.watcher_loop())
    logger.info("task-watcher lifespan 시작")
    try:
        yield
    finally:
        watcher_task.cancel()
        try:
            await watcher_task
        except asyncio.CancelledError:
            pass
        logger.info("task-watcher lifespan 종료")


app = FastAPI(lifespan=lifespan)


@app.get("/health")
def health():
    return {"ok": True, "service": "task-watcher"}