#!/usr/bin/env node
/**
 * Pretest: BARE_OS_POSIX_PROFILE_VERSION and BARE_OS_POSIX_PROFILE_ID must match
 * between protocol source, declared profile markdown table, and posix-compliance-matrix.json.
 */
import fs from 'node:fs'
import path from 'node:path'
import process from 'node:process'
import { fileURLToPath } from 'node:url'
import {
  BARE_OS_POSIX_PROFILE_VERSION,
  BARE_OS_POSIX_PROFILE_ID
} from '../packages/bare-os-protocol/lib/bare-os-posix-profile.js'

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..')
const declaredPath = path.join(root, 'docs/architecture/POSIX_DECLARED_PROFILE.md')
const matrixPath = path.join(root, 'docs/reference/posix-compliance-matrix.json')
const syscallsProcPath = path.join(
  root,
  'packages/bare-os-booter/lib/bare-os-syscalls-proc-json.js'
)
const ctxApiPath = path.join(
  root,
  'packages/bare-os-booter/lib/bare-os-ctx-api.js'
)
const readmePath = path.join(root, 'README.md')

function readDeclaredTable() {
  const text = fs.readFileSync(declaredPath, 'utf8')
  const verM = text.match(/`BARE_OS_POSIX_PROFILE_VERSION`\s*\|\s*`([^`]+)`/)
  const idM = text.match(/`BARE_OS_POSIX_PROFILE_ID`\s*\|\s*`([^`]+)`/)
  return {
    version: verM ? verM[1].trim() : '',
    id: idM ? idM[1].trim() : ''
  }
}

function readMatrix() {
  const j = JSON.parse(fs.readFileSync(matrixPath, 'utf8'))
  return {
    profileId: String(j.profileId || '').trim(),
    note: String(j.note || ''),
    syscallsSchema:
      j.synthetic_proc && typeof j.synthetic_proc.syscalls_json_schema === 'number'
        ? j.synthetic_proc.syscalls_json_schema
        : null
  }
}

function readSyscallsSchemaFromSource() {
  const txt = fs.readFileSync(syscallsProcPath, 'utf8')
  const m = txt.match(/schemaVersion:\s*(\d+)/)
  return m ? Number.parseInt(m[1], 10) : null
}

function readCtxApiVersion() {
  const txt = fs.readFileSync(ctxApiPath, 'utf8')
  const m = txt.match(/export const BARE_OS_CTX_API_VERSION = '([^']+)'/)
  return m ? m[1].trim() : ''
}

function main() {
  const dec = readDeclaredTable()
  const mat = readMatrix()

  const errors = []
  if (dec.version !== BARE_OS_POSIX_PROFILE_VERSION) {
    errors.push(
      `POSIX_DECLARED_PROFILE.md table BARE_OS_POSIX_PROFILE_VERSION "${dec.version}" !== bare-os-posix-profile.js "${BARE_OS_POSIX_PROFILE_VERSION}"`
    )
  }
  if (dec.id !== BARE_OS_POSIX_PROFILE_ID) {
    errors.push(
      `POSIX_DECLARED_PROFILE.md table BARE_OS_POSIX_PROFILE_ID "${dec.id}" !== bare-os-posix-profile.js "${BARE_OS_POSIX_PROFILE_ID}"`
    )
  }
  if (mat.profileId !== BARE_OS_POSIX_PROFILE_ID) {
    errors.push(
      `posix-compliance-matrix.json profileId "${mat.profileId}" !== "${BARE_OS_POSIX_PROFILE_ID}"`
    )
  }
  if (!mat.note.includes(BARE_OS_POSIX_PROFILE_VERSION)) {
    errors.push(
      `posix-compliance-matrix.json note must contain profile version "${BARE_OS_POSIX_PROFILE_VERSION}" (for dashboard / operator drift checks)`
    )
  }

  const wantSys = readSyscallsSchemaFromSource()
  if (wantSys == null || !Number.isFinite(wantSys)) {
    errors.push('Could not parse schemaVersion from bare-os-syscalls-proc-json.js')
  } else if (mat.syscallsSchema !== wantSys) {
    errors.push(
      `posix-compliance-matrix.json synthetic_proc.syscalls_json_schema ${mat.syscallsSchema} !== bare-os-syscalls-proc-json schemaVersion ${wantSys}`
    )
  }

  const ctxVer = readCtxApiVersion()
  if (ctxVer) {
    const readme = fs.readFileSync(readmePath, 'utf8')
    if (!readme.includes('**`' + ctxVer + '`**')) {
      errors.push(
        `README.md must mention current ctx API **\`${ctxVer}\`** alongside POSIX profile (single-source triplet)`
      )
    }
  }

  if (errors.length) {
    console.error('verify-posix-profile-triplet: FAIL')
    for (const e of errors) console.error('  -', e)
    process.exit(1)
  }
  console.log('verify-posix-profile-triplet: OK')
}

main()