import { existsSync } from 'node:fs'
import { readFile } from 'node:fs/promises'
import { spawnSync } from 'node:child_process'
import { resolve } from 'node:path'

const root = resolve(new URL('..', import.meta.url).pathname)
const executable = process.env.FREECAD_CMD || resolve(root, '.cache/freecad/install-desktop/bin/FreeCADCmd')
const sysroot = resolve(root, '.cache/freecad/sysroot')
const scriptPath = resolve(root, 'scripts/freecad-property-direction-mutation.py')
const outputPath = resolve(root, 'config/freecad-property-direction-mutation.json')
if (!existsSync(executable)) throw new Error(`FreeCAD PropertyDirection executable is missing: ${executable}`)
const execution = spawnSync(executable, ['--python-path', resolve(sysroot, 'usr/lib/python3/dist-packages'), scriptPath], {
  cwd: root,
  encoding: 'utf8',
  timeout: 120_000,
  maxBuffer: 32 * 1024 * 1024,
  env: {
    ...process.env,
    FREECAD_PROPERTY_DIRECTION_MUTATION_OUTPUT: outputPath,
    PYTHONPATH: `${resolve(sysroot, 'usr/lib/python3/dist-packages')}${process.env.PYTHONPATH ? `:${process.env.PYTHONPATH}` : ''}`,
    LD_LIBRARY_PATH: `${resolve(sysroot, 'usr/lib/x86_64-linux-gnu')}${process.env.LD_LIBRARY_PATH ? `:${process.env.LD_LIBRARY_PATH}` : ''}`,
  },
})
const output = `${execution.stdout || ''}\n${execution.stderr || ''}`
if (execution.error || execution.status !== 0 || !output.includes('FREECAD_PROPERTY_DIRECTION_MUTATION_RESULT=')) throw new Error(`FreeCAD PropertyDirection mutation probe failed with status ${execution.status}: ${execution.error?.message || output.trim()}`)
const report = JSON.parse(await readFile(outputPath, 'utf8'))
console.log(JSON.stringify({
  status: report.status,
  output: 'config/freecad-property-direction-mutation.json',
  cases: report.cases.map(({ objectTypeId, propertyName, phases, valueChanged, valueRestored, geometryChanged, geometryRestored, objectsPreserved }) => ({
    objectTypeId,
    propertyName,
    values: {
      before: phases.before.value,
      edited: phases.afterRecompute.value,
      restored: phases.afterRestoreRecompute.value,
    },
    brepSha256: {
      before: phases.before.shape.brepSha256,
      edited: phases.afterRecompute.shape.brepSha256,
      restored: phases.afterRestoreRecompute.shape.brepSha256,
    },
    valueChanged,
    valueRestored,
    geometryChanged,
    geometryRestored,
    objectsPreserved,
  })),
}, null, 2))
