"""alert_logs retention purge helpers."""

from datetime import datetime, timedelta, timezone

from server.infrastructure.database.alert_log_repo import (
    ALERT_LOG_PURGE_BATCH_SIZE,
    ALERT_LOG_RETENTION_DAYS,
)


def test_alert_log_retention_constants():
    assert ALERT_LOG_RETENTION_DAYS == 7
    assert ALERT_LOG_PURGE_BATCH_SIZE >= 100


def test_purge_cutoff_is_7_days_ago():
    cutoff = datetime.now(timezone.utc).replace(tzinfo=None) - timedelta(
        days=ALERT_LOG_RETENTION_DAYS
    )
    age = datetime.now(timezone.utc).replace(tzinfo=None) - cutoff
    assert age.days == ALERT_LOG_RETENTION_DAYS