const TASK = {
  key: 'expired-session-sweep',
  title: 'Expired session cleanup',
  category: 'cleanup',
  trigger: 'scheduled recurring task, hourly',
  purpose: 'remove expired authentication sessions and their metadata.',
  taskType: 'recurring-run',
  intervalMs: 60 * 60 * 1000
};

function registerExpiredSessionSweepTask(options) {
  const backgroundTaskQueue = options && options.backgroundTaskQueue;
  const pool = options && options.pool;

  if (!backgroundTaskQueue || !pool) {
    throw new Error('registerExpiredSessionSweepTask requires the session cleanup dependencies.');
  }

  backgroundTaskQueue.registerRecurringTask({
    key: TASK.key,
    title: TASK.title,
    category: TASK.category,
    intervalMs: TASK.intervalMs,
    metadata: {},
    run: async function () {
      await pool.query('DELETE FROM a_sessions WHERE expires_at <= NOW()');
    }
  });
}

module.exports = { registerExpiredSessionSweepTask };