/// <reference path="../pb_data/types.d.ts" />

// Retention for the client_logs diagnostics (feedback 2 §4). These are for
// live debugging, not an archive — delete everything older than 14 days daily
// so the collection can't grow unbounded. Runs in PocketBase's cron scheduler.
//
// Every stale row goes in one run. The first version deleted a single page of
// 500 records a night while ~1275 rows arrived a day, so on 2026-09-13 about
// 14400 rows past the cutoff were still there, the oldest from 2026-08-19.
//
// Plain SQL rather than $app.delete() per record: client_logs has no file
// fields, no collection has a relation pointing at it and no hook watches its
// deletes, so the record path would only add a transaction and a cascade lookup
// per row. Batches keep each write lock short so app requests are not held up.
// The run leaves one line in PocketBase's logs (dashboard, /api/logs).
cronAdd("trimClientLogs", "0 4 * * *", () => {
  const BATCH = 2000
  const cutoff = new Date(Date.now() - 14 * 24 * 60 * 60 * 1000)
    .toISOString().replace("T", " ").slice(0, 19) + ".000Z"
  let deleted = 0
  try {
    for (;;) {
      const n = $app.db().newQuery(
        "DELETE FROM client_logs WHERE id IN " +
        "(SELECT id FROM client_logs WHERE created < {:c} LIMIT {:n})"
      ).bind({ c: cutoff, n: BATCH }).execute().rowsAffected()
      deleted += n
      if (n < BATCH) break
    }
    $app.logger().info("trimClientLogs", "deleted", deleted, "cutoff", cutoff)
  } catch (e) {
    $app.logger().error("trimClientLogs failed",
      "error", String(e), "deleted", deleted, "cutoff", cutoff)
  }
})