import fs from 'node:fs'
import path from 'node:path'

const root = process.cwd()
const errors = []

function walk(dir) {
  if (!fs.existsSync(dir)) return []
  return fs.readdirSync(dir, { withFileTypes: true }).flatMap(entry => {
    const full = path.join(dir, entry.name)
    return entry.isDirectory() ? walk(full) : [full]
  })
}

const moduleFiles = walk(path.join(root, 'apps/web/src/modules')).filter(f => /\.(ts|vue)$/.test(f))
for (const file of moduleFiles) {
  const text = fs.readFileSync(file, 'utf8')
  if (/from\s+['\"]primevue\//.test(text) || /from\s+['\"]ag-grid-(vue3|community)/.test(text)) {
    errors.push(`${path.relative(root,file)}: business module imports PrimeVue/AG Grid directly`)
  }
}

const manifestFile = path.join(root, 'generated/screen-manifest.json')
if (!fs.existsSync(manifestFile)) errors.push('generated/screen-manifest.json is missing')
else {
  const manifest = JSON.parse(fs.readFileSync(manifestFile, 'utf8'))
  const ids = new Map()
  for (const screen of manifest) {
    if (ids.has(screen.id)) errors.push(`duplicate screen id ${screen.id}: ${ids.get(screen.id)} / ${screen.source}`)
    ids.set(screen.id, screen.source)
    if (!/^((OMS|ERP|WMS|COMMON)-[A-Z0-9-]+)$/.test(screen.id)) errors.push(`invalid screen id: ${screen.id}`)
    if (screen.version === 'unknown' || screen.type === 'unknown') errors.push(`incomplete screen definition: ${screen.id}`)
  }
}

const migrations = walk(path.join(root, 'backend/Database/Migrations')).filter(f => f.endsWith('.sql')).map(f => path.basename(f))
const sorted = [...migrations].sort()
if (migrations.join('|') !== sorted.join('|')) errors.push('migration files are not lexicographically ordered')

if (errors.length) {
  console.error('KBX architecture validation failed:')
  for (const error of errors) console.error(`- ${error}`)
  process.exit(1)
}
console.log(`KBX architecture validation passed (${moduleFiles.length} module source files, ${migrations.length} migrations).`)