import time
from datetime import datetime, timezone, timedelta

from app.shared.config import get_settings
from app.shared.database import get_db, init_schema
from app.cron.daily_summary import generate_daily_summary
from app.cron.cluster_unknowns import cluster_unknown_speakers
from app.cron.purge_clips import purge_old_clips


def run_nightly(settings, db):
    yesterday = (datetime.now(timezone.utc) - timedelta(days=1)).strftime("%Y-%m-%d")
    today = datetime.now(timezone.utc).strftime("%Y-%m-%d")
    generate_daily_summary(yesterday, settings, db)
    cluster_unknown_speakers(settings, db)
    purge_old_clips(today, settings, db)


def main():
    settings = get_settings()
    init_schema(settings)
    db = get_db(settings)

    while True:
        now = datetime.now(timezone.utc)
        next_midnight = now.replace(hour=0, minute=0, second=0, microsecond=0)
        if next_midnight <= now:
            next_midnight += timedelta(days=1)
        sleep_secs = (next_midnight - now).total_seconds()
        time.sleep(sleep_secs)
        run_nightly(settings, db)


if __name__ == "__main__":
    main()