import asyncio

from apscheduler.schedulers.asyncio import AsyncIOScheduler


async def scan_due_reminders() -> None:
    # Reminder delivery is implemented in phase 2. Keeping the scheduler isolated
    # ensures API restarts never own reminder timing.
    return None


async def main() -> None:
    scheduler = AsyncIOScheduler(timezone="UTC")
    scheduler.add_job(scan_due_reminders, "interval", seconds=30, max_instances=1)
    scheduler.start()
    await asyncio.Event().wait()


if __name__ == "__main__":
    asyncio.run(main())