import { spawnSync } from 'node:child_process'
import { dirname, resolve } from 'node:path'
import { fileURLToPath } from 'node:url'

const root = resolve(dirname(fileURLToPath(import.meta.url)), '..')
const localOracle = resolve(root, '.cache/freecad/install-native/bin/FreeCADCmd')
const candidates = process.env.FREECAD_CMD ? [process.env.FREECAD_CMD] : [localOracle, 'FreeCADCmd', 'freecadcmd']
let command = null
for (const candidate of candidates) {
  const probe = spawnSync(candidate, ['--version'], { encoding: 'utf8', timeout: 15000 })
  if (!probe.error || probe.error.code !== 'ENOENT') { command = candidate; break }
}
if (!command) throw new Error('FreeCADCmd 1.1.1 is unavailable. Set FREECAD_CMD to the locked oracle executable.')

const execution = spawnSync(command, [resolve(root, 'scripts/freecad-reference-probe.py')], {
  cwd: root,
  encoding: 'utf8',
  timeout: 120000,
  maxBuffer: 20 * 1024 * 1024,
  env: { ...process.env },
})
const output = `${execution.stdout || ''}\n${execution.stderr || ''}`
const resultLine = output.split(/\r?\n/).find((line) => line.startsWith('FREECAD_REFERENCE_RESULT='))
if (execution.error || execution.status !== 0 || !resultLine) {
  throw new Error(`FreeCAD reference probe failed with status ${execution.status}: ${execution.error?.message || output.trim()}`)
}
const result = JSON.parse(resultLine.slice('FREECAD_REFERENCE_RESULT='.length))
if (result.freecadVersion !== '1.1.1') throw new Error(`Expected FreeCAD 1.1.1, received ${result.freecadVersion}`)
console.log(JSON.stringify({ command, result }, null, 2))