const { fetchAppSettings } = require('#src/data/app-settings');

const TASK = {
  key: 'audit-log-sweep',
  title: 'Audit log cleanup',
  category: 'cleanup',
  intervalMs: 24 * 60 * 60 * 1000
};

function registerAuditLogSweepTask(options) {
  const backgroundTaskQueue = options && options.backgroundTaskQueue;
  const pool = options && options.pool;
  if (!backgroundTaskQueue || !pool) {
    throw new Error('registerAuditLogSweepTask requires audit cleanup dependencies.');
  }
  backgroundTaskQueue.registerRecurringTask({
    key: TASK.key,
    title: TASK.title,
    category: TASK.category,
    intervalMs: TASK.intervalMs,
    metadata: {},
    run: async function () {
      const settings = await fetchAppSettings(pool);
      const retentionDays = Number(settings['audit.retention_days']);
      if (!Number.isInteger(retentionDays) || retentionDays <= 0) {
        return;
      }
      const cutoff = new Date(Date.now() - retentionDays * 24 * 60 * 60 * 1000);
      await pool.query('DELETE FROM o_audit_events WHERE occurred_at < ?', [cutoff]);
    }
  });
}

module.exports = { registerAuditLogSweepTask };