// apps/hq/scripts/apply-ltd-numbers.ts — one-off (D35): append the directory-sourced LTD
// number to the client name where the co-op directory found one. Keeps the number IN the
// name (owner's choice), in a consistent " LTD NO. <n>" suffix. Idempotent + guarded:
// skips a client whose name already contains that number, and only touches found=true rows.
// Does NOT overwrite the name's spelling/casing — only appends the number.
//   LTD_JSON=<results.json> DATABASE_URL=postgres://… npx tsx apps/hq/scripts/apply-ltd-numbers.ts
// SQLite is never the default: to target a local SQLite database, opt in explicitly with
// HQ_DB_TARGET=sqlite (or the --sqlite flag). Without either, the script refuses to run.
import { readFileSync } from 'node:fs'
import { openDb, sqliteFilePath } from '../src/db'
import { openPgDb, pgTargetDescription, requireDbUrlForEnv } from '../src/db-pg'
import { updateClient } from '../src/repos-clients'
import type { DB } from '../src/db'

interface Res { clientId: string; ltdNo: string; found: boolean }

async function main() {
  const path = process.env['LTD_JSON']
  if (path === undefined) throw new Error('Set LTD_JSON to the workflow result json path')
  const parsed = JSON.parse(readFileSync(path, 'utf8')) as { results?: Res[] } | Res[]
  const results = Array.isArray(parsed) ? parsed : (parsed.results ?? [])

  // Pre-ship audit FIX A: the SAME resolver server.ts uses (never re-derived locally) — and,
  // unlike the server, this one-off script hard-fails rather than silently falling back to a
  // throwaway SQLite file when NODE_ENV=production resolves no Postgres target.
  const pgUrl = requireDbUrlForEnv()
  if (pgUrl !== '') {
    console.log(`[db] engine: postgres ${pgTargetDescription(pgUrl)}`)
  } else {
    console.log(`[db] engine: sqlite at ${sqliteFilePath(process.env['HQ_DATA_DIR'])}`)
  }
  const db: DB = pgUrl !== '' ? await openPgDb(pgUrl) : openDb(process.env['HQ_DATA_DIR'])
  try {
    let applied = 0, already = 0, skipped = 0
    const seen = new Set<string>()
    for (const r of results) {
      const ltd = (r.ltdNo ?? '').trim()
      if (!r.found || ltd === '' || seen.has(r.clientId)) { skipped++; continue }
      seen.add(r.clientId)
      const cur = await db.get<{ name: string }>(`SELECT name FROM client WHERE id=?`, r.clientId)
      if (cur === undefined) { skipped++; continue }
      // Already carries this number (bare, or "LTD. K 1028" with spaces/punct)? Don't duplicate.
      // Compare with all non-alphanumerics stripped so "K 1028" matches "K1028".
      const squish = (s: string) => s.toUpperCase().replace(/[^A-Z0-9]/g, '')
      if (squish(cur.name).includes(squish(ltd))) { already++; continue }
      const newName = `${cur.name} LTD NO. ${ltd}`
      await updateClient(db, 'system', r.clientId, { name: newName })
      applied++
    }
    // eslint-disable-next-line no-console
    console.log(`LTD numbers: ${applied} appended, ${already} already present, ${skipped} skipped (not found / no number).`)
  } finally {
    await db.close()
  }
}

main().catch((e) => { console.error(e); process.exit(1) })