# retoor <retoor@molodetz.nl>
from datetime import datetime, timedelta, timezone

from molodetz.database import count_audit, get_int_setting, prune_audit, prune_expired_sessions
from molodetz.services.base import BaseService


class HousekeepingService(BaseService):
    name = "housekeeping"
    title = "Housekeeping"
    description = "Clears expired sessions and prunes the audit log to the retention period."
    default_interval = 3600
    min_interval = 60
    metrics_interval = 300

    def __init__(self):
        super().__init__()
        self.last_sessions = 0
        self.last_audit = 0

    async def run_once(self):
        self.last_sessions = prune_expired_sessions()
        days = max(1, get_int_setting("audit_retention_days", 365))
        cutoff = (datetime.now(timezone.utc) - timedelta(days=days)).isoformat()
        self.last_audit = prune_audit(cutoff)
        self.log(f"sessions removed: {self.last_sessions}, audit rows pruned: {self.last_audit}")

    def collect_metrics(self):
        return {
            "cards": [
                {"label": "Audit rows", "value": count_audit()},
                {"label": "Last session cleanup", "value": self.last_sessions},
                {"label": "Last audit prune", "value": self.last_audit},
            ],
            "table": None,
        }