/**
 * Full-APEX importer CLI (D20): `npm run import:full -- --dir <folder> [--commit]`
 * Reads the nine workbook CSVs from <folder> (all optional except clients.csv),
 * prints the per-section stage report (problems block commit; notes are the
 * deliberate skips/merges), and — only with --commit and a problem-free report —
 * applies everything in one transaction. Without --commit it is a dry run that
 * writes nothing and needs no HQ_SECRET_KEY. DB path comes from HQ_DATA_DIR (run
 * from the repo root otherwise — the default resolves ./data from CWD). NEVER
 * prints credential values — the report carries counts and row numbers only.
 */
import fs from 'node:fs'
import path from 'node:path'
import { formatINR } from '@sims/domain'
import { openDb } from '../src/db'
import { seedIfEmpty } from '../src/seed'
import { APEX_FILES, commitApexFull, stageApexFull } from '../src/import-apex-full'

void (async () => {
  const args = process.argv.slice(2)
  const dirIdx = args.indexOf('--dir')
  const dir = dirIdx >= 0 ? args[dirIdx + 1] : undefined
  if (dir === undefined) {
    console.error('Usage: npm run import:full -- --dir <folder> [--commit]')
    process.exit(1)
  }

  const files: Record<string, string> = {}
  for (const name of APEX_FILES) {
    const p = path.join(dir, `${name}.csv`)
    if (fs.existsSync(p)) files[name] = fs.readFileSync(p, 'utf8')
  }
  if (files['clients'] === undefined) {
    console.error(`clients.csv not found in ${dir} — it is the one required file (SID_NO is the join key)`)
    process.exit(1)
  }
  const absent = APEX_FILES.filter((n) => files[n] === undefined)
  if (absent.length > 0) console.log(`Not present (skipped): ${absent.join(', ')}`)

  const db = openDb(process.env['HQ_DATA_DIR'])
  await seedIfEmpty(db)
  const keyHex = process.env['HQ_SECRET_KEY'] ?? ''

  const { sections, summary } = await stageApexFull(db, files, keyHex)
  let problemTotal = 0
  for (const section of APEX_FILES) {
    const r = sections[section]
    if (r.staged === 0 && r.problems.length === 0 && r.notes.length === 0) continue
    console.log(`${section}: ${r.staged} staged, ${r.problems.length} problem(s), ${r.notes.length} note(s)`)
    for (const p of r.problems) console.log(`  ! ${p}`)
    for (const n of r.notes) console.log(`  - ${n}`)
    problemTotal += r.problems.length
  }
  console.log('---')
  console.log(`Plan: ${summary.clients} clients, ${summary.client_modules} module assignments, ${summary.branches} branches,`)
  console.log(`      ${summary.documents} documents totalling ${formatINR(summary.totalPayablePaise)} payable, ${summary.payments} payments,`)
  console.log(`      ${summary.tickets} tickets, ${summary.interactions} interactions;`)
  console.log(`      INVOICE series seed for ${summary.currentFy}: ${summary.seedTail ?? 'none (no current-FY docs)'}`)

  if (!args.includes('--commit')) {
    console.log('Dry run — nothing written. Re-run with --commit to apply.')
  } else if (problemTotal > 0) {
    console.error(`Refusing to commit: ${problemTotal} problem(s) above — fix the CSVs and re-run.`)
    process.exitCode = 1
  } else {
    const counts = await commitApexFull(db, 'system', files, keyHex)
    console.log('Committed:', JSON.stringify(counts, null, 2))
  }
  await db.close()
})()