import { pool } from '../pool.js';

export async function record(r = {}) {
  const { rows } = await pool.query(
    `INSERT INTO speedtest_results
       (down_mbps, up_mbps, ping_ms, jitter_ms, packet_loss, server_name, server_id,
        isp, result_url, down_bytes, up_bytes, ok, error)
     VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13) RETURNING *`,
    [r.down_mbps ?? null, r.up_mbps ?? null, r.ping_ms ?? null, r.jitter_ms ?? null,
     r.packet_loss ?? null, r.server_name ?? null, r.server_id ?? null, r.isp ?? null,
     r.result_url ?? null, r.down_bytes ?? null, r.up_bytes ?? null, r.ok ?? true, r.error ?? null]);
  return rows[0];
}

export async function history(limit = 30) {
  const { rows } = await pool.query(
    `SELECT * FROM speedtest_results ORDER BY ran_at DESC LIMIT $1`, [limit]);
  return rows;
}

// Rows within the last N hours (ascending for charting), capped.
export async function range(hours = 168, limit = 1000) {
  const { rows } = await pool.query(
    `SELECT * FROM (
       SELECT * FROM speedtest_results
        WHERE ran_at >= now() - ($1 || ' hours')::interval
        ORDER BY ran_at DESC LIMIT $2
     ) t ORDER BY ran_at ASC`, [hours, limit]);
  return rows;
}

export async function latest() {
  const { rows } = await pool.query(
    `SELECT * FROM speedtest_results WHERE ok ORDER BY ran_at DESC LIMIT 1`);
  return rows[0] || null;
}

export async function stats(hours = 24) {
  const { rows } = await pool.query(
    `SELECT count(*) FILTER (WHERE ok)      AS n,
            count(*) FILTER (WHERE NOT ok)  AS failures,
            avg(down_mbps) FILTER (WHERE ok) AS avg_down,
            min(down_mbps) FILTER (WHERE ok) AS min_down,
            max(down_mbps) FILTER (WHERE ok) AS max_down,
            avg(up_mbps)   FILTER (WHERE ok) AS avg_up,
            avg(ping_ms)   FILTER (WHERE ok) AS avg_ping,
            max(ping_ms)   FILTER (WHERE ok) AS max_ping
       FROM speedtest_results
      WHERE ran_at >= now() - ($1 || ' hours')::interval`, [hours]);
  return rows[0];
}