import assert from 'node:assert/strict'
import test from 'node:test'
import { readFileSync } from 'node:fs'

const source = readFileSync(new URL('../../unreal_tran_web/src/features/guide-legacy/demo-src/ofd-render-interactive.js', import.meta.url), 'utf8')
const handlerSource = source.slice(source.indexOf('  const reportedLoadErrors = new WeakSet();'), source.indexOf('  const syncAnimationControls ='))

function fixture(destroyed = false) {
  const statuses = []
  const messages = []
  const report = new Function('destroyed', 'setStatus', 'onError', `${handlerSource}\nreturn reportLoadError`)(
    destroyed,
    (text, error) => statuses.push({ text, error }),
    error => messages.push(error),
  )
  return { report, statuses, messages }
}

test('GLB load and ready rejection handlers report the same failure only once', () => {
  const f = fixture()
  const error = new Error('HTTP 503: asset service unavailable')
  f.report(error)
  f.report(error)
  assert.deepEqual(f.messages, [error])
  assert.ok(f.statuses.length > 0)
  assert.ok(f.statuses.every(status => status.error && !status.text.includes(error.message)))
  assert.match(f.statuses.at(-1).text, /重新加载/)
})

test('retrying an unavailable GLB still reports the new failed request', () => {
  const f = fixture()
  f.report(new Error('HTTP 503'))
  f.report(new Error('HTTP 503'))
  assert.equal(f.messages.length, 2)
})

test('cancelled and destroyed model viewers do not surface stale load errors', () => {
  const f = fixture()
  f.report(Object.assign(new Error('cancelled'), { name: 'AbortError' }))
  assert.equal(f.messages.length, 0)
  assert.equal(f.statuses.length, 0)
  const destroyed = fixture(true)
  destroyed.report(new Error('late HTTP 503'))
  assert.equal(destroyed.messages.length, 0)
  assert.equal(destroyed.statuses.length, 0)
})