"""
APScheduler background jobs. Starts with the FastAPI lifespan.
"""
from apscheduler.schedulers.asyncio import AsyncIOScheduler
from apscheduler.triggers.cron import CronTrigger

import structlog

logger = structlog.get_logger()
_scheduler: AsyncIOScheduler | None = None


async def start_scheduler() -> None:
    global _scheduler
    from app.workers.snapshot import snapshot_job
    from app.workers.price_sync import price_sync_job
    from app.workers.fx_sync import fx_sync_job
    _scheduler = AsyncIOScheduler()

    _scheduler.add_job(snapshot_job,   CronTrigger(hour=2, minute=0),   id="nw_snapshot")
    _scheduler.add_job(price_sync_job, CronTrigger(minute="*/15"),       id="price_sync")
    _scheduler.add_job(fx_sync_job,    CronTrigger(minute=0),            id="fx_sync")
    # _scheduler.add_job(backup_job,     CronTrigger(hour=3),             id="backup")
    # _scheduler.add_job(ml_retrain_job, CronTrigger(day_of_week="sun", hour=1), id="ml_retrain")

    _scheduler.start()
    logger.info("scheduler_started")


async def stop_scheduler() -> None:
    if _scheduler and _scheduler.running:
        _scheduler.shutdown(wait=False)
        logger.info("scheduler_stopped")