"""Cron entrypoint.

Runs as a FastAPI app (for /health/cron) with APScheduler spawning the
time-triggered jobs. P1 jobs are added in week 2 task #8 (polling) and week 3
tasks #12 (SLO measurement) and #13 (contract checker).
"""

from collections.abc import AsyncIterator
from contextlib import asynccontextmanager

import structlog
from apscheduler.schedulers.asyncio import AsyncIOScheduler
from fastapi import FastAPI

from app.config import get_settings
from app.db import close_pool, get_pool
from app.health import router as health_router
from app.logging_setup import configure_logging

log = structlog.get_logger("cron")


@asynccontextmanager
async def lifespan(_: FastAPI) -> AsyncIterator[None]:
    configure_logging()
    settings = get_settings()
    await get_pool()
    log.info("cron.starting", git_sha=settings.app_git_sha, mode=settings.app_mode)

    scheduler = AsyncIOScheduler(timezone="UTC")
    scheduler.start()
    log.info("cron.scheduler_started")

    try:
        yield
    finally:
        scheduler.shutdown(wait=False)
        await close_pool()


app = FastAPI(
    title="fleet-platform [cron]",
    version=get_settings().app_git_sha,
    lifespan=lifespan,
)
app.include_router(health_router)