/**
 * BODY timing by article age: candidates' first articles, oldest and newest
 * posted, fetched one at a time on one connection (status line, then the
 * rest), with the release's posting date.
 *
 *   node --env-file=.env --import=@poppinss/ts-exec tools/body_timing.ts [n]
 */
// @ts-ignore pg has no types here
import pg from 'pg'
import { XoverClient } from '#lib/nntp/index'

const n = Number(process.argv[2] ?? 8)
const env = process.env
const db = new pg.Client({ host: env.DB_HOST, port: Number(env.DB_PORT ?? 5432), user: env.DB_USER, password: env.DB_PASSWORD, database: env.DB_DATABASE })
await db.connect()
const pick = async (order: string) =>
  (await db.query(`SELECT pc.message_id, r.posted_at FROM probe_candidates pc JOIN releases r ON r.id = pc.release_id WHERE pc.kind = 'lone' AND r.posted_at IS NOT NULL ORDER BY r.posted_at ${order} LIMIT $1`, [n])).rows
const client = await XoverClient.connect({ host: env.NNTP_HOST!, port: Number(env.NNTP_PORT ?? 563), user: env.NNTP_USER, password: env.NNTP_PASSWORD, secure: (env.NNTP_SECURE ?? 'true') !== 'false', compress: false, timeoutMs: 120_000 })
for (const [label, rows] of [['oldest', await pick('ASC')], ['newest', await pick('DESC')]] as const) {
  let total = 0
  for (const r of rows) {
    const at = performance.now()
    let size = 0
    try {
      size = (await client.body(r.message_id)).length
    } catch (e: any) {
      size = -1
      console.log(`  ${e.message}`)
    }
    const ms = performance.now() - at
    total += ms
    console.log(`${label} ${new Date(r.posted_at).toISOString().slice(0, 10)} ${(ms / 1000).toFixed(2)} s ${(size / 1000).toFixed(0)} kB`)
  }
  console.log(`${label}: ${(total / rows.length / 1000).toFixed(2)} s an article`)
}
client.close()
await db.end()