import { createHash } from 'node:crypto'
import { readFile, writeFile } from 'node:fs/promises'
import { resolve } from 'node:path'

const root = resolve(new URL('..', import.meta.url).pathname)
const runtimePath = resolve(root, '.cache/freecad/reference-desktop.json')
const sourcePaths = [
  '.cache/freecad/FreeCAD/src/Mod/Measure/App/MeasureArea.cpp',
  '.cache/freecad/FreeCAD/src/Mod/Measure/App/MeasureArea.h',
]
const outputPath = resolve(root, 'config/freecad-property-area-inventory.json')
const runtimeContent = await readFile(runtimePath)
const runtime = JSON.parse(runtimeContent)
const sourceContents = await Promise.all(sourcePaths.map((path) => readFile(resolve(root, path))))
const fail = (message) => { throw new Error(`FreeCAD PropertyArea inventory generation failed: ${message}`) }

if (runtime.schemaVersion !== 1 || runtime.freecadVersion !== '1.1.1' || runtime.gitCommit !== '0108fd4b4850cc46e625b60e53cea7a7bbe69f8d') fail('desktop oracle is not the locked FreeCAD baseline')
const records = []
for (const objectType of runtime.runtimeObjects?.types ?? []) {
  for (const property of objectType.properties ?? []) {
    if (property.typeId !== 'App::PropertyArea') continue
    const input = objectType.properties.find((candidate) => candidate.name === 'Elements')
    records.push({
      objectTypeId: objectType.typeId,
      objectAvailable: objectType.available === true,
      probeStatus: objectType.probeStatus,
      propertyName: property.name,
      group: property.group,
      status: property.status,
      normalizedStatus: property.status.map((entry) => entry === 24 ? 'PropReadOnly' : entry === 27 ? 'PropOutput' : String(entry)),
      defaultRaw: property.default,
      valueModel: { kind: 'quantity', dimension: 'length^2', defaultValue: 0, defaultUnit: 'mm^2', derived: true, writable: false },
      inputs: [{ propertyName: input?.name, typeId: input?.typeId, group: input?.group, defaultValue: input?.default, scope: 'Global', allowExternal: true, cardinality: 'one-or-more' }],
      dependencies: [{ sourceProperty: 'Elements', targetProperty: 'Area', relation: 'link-sub-list', effect: 'immediate-recompute-on-change' }],
      applicability: {
        selectionMustBeNonEmpty: true,
        everyElementMustBeValid: true,
        supportedMeasureElementTypes: ['PLANE', 'CYLINDER', 'SURFACE', 'VOLUME'],
        unsupportedMeasureElementTypes: ['INVALID', 'POINT', 'LINE', 'CURVE'],
        externalDocumentElementsAllowed: true,
      },
      execution: { aggregation: 'sum-area', resultProperty: 'Area', invalidGeometryDiagnostic: 'Cannot calculate area', shape: 'not-applicable-derived-measurement' },
    })
  }
}
if (records.length !== 1) fail(`expected one native App::PropertyArea record, found ${records.length}`)
const report = {
  schemaVersion: 1,
  status: 'pass',
  baseline: { freecadVersion: runtime.freecadVersion, commit: runtime.gitCommit },
  propertyType: 'App::PropertyArea',
  recordCount: records.length,
  records,
  provenance: {
    runtime: { path: '.cache/freecad/reference-desktop.json', bytes: runtimeContent.length, sha256: createHash('sha256').update(runtimeContent).digest('hex') },
    sources: sourcePaths.map((path, index) => ({ path, bytes: sourceContents[index].length, sha256: createHash('sha256').update(sourceContents[index]).digest('hex') })),
  },
  classification: 'opaque-fcstd-proxy',
  nextPhases: ['B', 'C', 'D', 'E', 'F', 'G', 'H', 'I'],
}
await writeFile(outputPath, `${JSON.stringify(report, null, 2)}\n`)
console.log(JSON.stringify({ status: 'freecad-property-area-inventory-generated', output: 'config/freecad-property-area-inventory.json', propertyType: report.propertyType, recordCount: report.recordCount, objectTypeId: records[0].objectTypeId }, null, 2))