doxa-maps/internal/check-mapbox-drew.mjs

#!/usr/bin/env node
/**
 * check-mapbox-drew — the Mapbox engine actually DREW, on every production leaf.
 *
 * ★ THE HOLE THIS FILLS (regions, RT8 goal b). Two gates already touch the engine and neither
 * asserts this one thing:
 *   check-leaf-engine-per-provider  proves MAPLIBRE purity (zero *.mapbox.com requests under
 *                                   ?provider=maplibre) and that a map still draws. It never forces
 *                                   Mapbox.
 *   check-provider-switch           does load ?provider=mapbox — but with a FAKE token, so it proves
 *                                   the ENGINE LOADS, not that a single tile rendered. One leaf.
 * So "Mapbox works" was never measured on the seven production maps. This measures it.
 *
 * ★ A SILENT FALLBACK IS THE FAILURE WORTH CATCHING. A leaf asked for Mapbox that quietly draws with
 * MapLibre looks perfect in a screenshot and passes every paint check. So the ENGINE is read off the
 * canvas that drew (.mapboxgl-canvas vs .maplibregl-canvas), never from which globals exist — a peer
 * script that merely loaded Mapbox proves nothing.
 *
 * ★ AND A CANVAS AT THE RIGHT SIZE IS NOT A MAP. This repo learned that the hard way: a country map
 * rendered fully blank while "a real GL canvas exists at 1200x780" passed. So drawing is asserted
 * with queryRenderedFeatures() > 0 on the leaf's own rendered features, not by canvas geometry.
 *
 * ★ THREE EXIT STATES, BECAUSE TWO WOULD FORCE A LIE. On this sandbox the Mapbox /v4/ composite
 * raster endpoint and country-boundaries both 403 — proven outside the browser with no Referer, with
 * 127.0.0.1 and with localhost, so it is TILESET ENTITLEMENT, not the embed (PRODUCTION-MATRIX:235).
 * Counting that as a failure would manufacture work for every owner; counting it as a pass would be
 * false. It exits 75 NOT MEASURED instead, and says which endpoint.
 *
 * USAGE  MAP_TOKEN=pk.… node internal/check-mapbox-drew.mjs [--dir <tree>] [--only a/b,c/d]
 *        Run through internal/browser-slot.sh — it needs the browser seat.
 *        @browser-slot-max-hold 1800
 * EXIT   0 every measured leaf drew with Mapbox · 1 a real failure · 75 no token, or only
 *        entitlement 403s (nothing could be judged).
 */
import { chromium } from './lib/playwright-guarded.mjs'
import { createServer } from 'node:http'
import { spawn } from 'node:child_process'
import { readFileSync, existsSync } from 'node:fs'
import { resolve, dirname, join } from 'node:path'
import { fileURLToPath } from 'node:url'
import { TREE_NAME } from './_tree-name.mjs'

const ROOT = resolve(dirname(fileURLToPath(import.meta.url)), '..')
const argv = process.argv.slice(2)
const arg = (k, d) => { const i = argv.indexOf(k); return i >= 0 && argv[i + 1] ? argv[i + 1] : d }
const DIR = resolve(arg('--dir', resolve(ROOT, 'public')))
const ONLY = arg('--only', '') ? new Set(arg('--only', '').split(',')) : null
const TOKEN = process.env.MAP_TOKEN || ''

// ── 3. NO REAL TOKEN -> NOT MEASURED, never a pass and never a fail ───────────────────────────
if (!/^pk\./.test(TOKEN)) {
  console.log('MAPBOX-DREW: NOT MEASURED — set MAP_TOKEN to a real pk.… token. A fake token loads the'
    + ' engine and renders nothing, which is exactly the false green this gate exists to refuse.')
  process.exit(75)
}

const manifestPath = join(DIR, TREE_NAME, 'manifest.json')
if (!existsSync(manifestPath)) { console.log(`MAPBOX-DREW: NOT MEASURED — no ${manifestPath}`); process.exit(75) }
const manifest = JSON.parse(readFileSync(manifestPath, 'utf8'))

// ── 2. TARGETS FROM THE MANIFEST, never hardcoded: the curated production tabs ─────────────────
// The seven are whatever doxa-maps-spa composes. Reading it here means adding a production tab
// cannot silently escape this gate.
const spa = (manifest.bundles || []).find((b) => b.bundle === 'doxa-maps-spa')
const composed = new Set(((spa?.composes) || []).map(String))
const leaves = []
// ★ isMap IS FALSE ON A COMPOSITE WHOSE CHILD HOLDS THE MAP, and skipping on it would have lost a
// production tab silently. research-map-plus-grid (Simple Research) is type nested-elements-mfe with
// isMap:false and composes ['doxa-research-map', 'people-groups-grid'] — the MAP is the child. So a
// composed tab counts as a map leaf if it is isMap ITSELF or it composes a profile that is. Measured:
// selecting on isMap alone found 6 of the 7 curated tabs.
const profileIsMap = new Map()
for (const b of manifest.bundles || []) for (const p of b.profiles || []) profileIsMap.set(`${b.bundle}/${p.profile}`, !!p.isMap)
const composesAMap = (b, p) => ((b.composes || []).some((ref) => {
  const r = String(ref)
  return profileIsMap.get(r) || [...profileIsMap.keys()].some((k) => k.startsWith(`${r}/`) && profileIsMap.get(k))
}))
for (const b of manifest.bundles || []) for (const p of b.profiles || []) {
  const id = `${b.bundle}/${p.profile}`
  if (!composed.has(id)) continue                             // only the curated tabs
  if (!p.isMap && !composesAMap(b, p)) continue                // …that draw a map, directly or via a child
  if (ONLY && !ONLY.has(id)) continue
  if (existsSync(join(DIR, TREE_NAME, id, 'index.html'))) leaves.push(id)
}
if (!leaves.length) { console.log('MAPBOX-DREW: NOT MEASURED — no composed map leaf matched'); process.exit(75) }

async function serve(dir) {
  const port = await new Promise((ok) => { const s = createServer().listen(0, '127.0.0.1', () => { const n = s.address().port; s.close(() => ok(n)) }) })
  const srv = spawn(process.execPath, [resolve(ROOT, 'internal/serve-strict.mjs'), '--port', String(port), '--directory', dir], { stdio: 'ignore' })
  await new Promise((r) => setTimeout(r, 600))
  return { port, stop: () => { try { srv.kill() } catch (_) {} } }
}

// The endpoints known to 403 on the sandbox token. Entitlement, not the owner's bug.
const ENTITLEMENT = [/\/v4\//, /country-boundaries/]

async function measure(page, url, provider) {
  const errs = []
  const forbidden = []
  page.on('pageerror', (e) => errs.push(String(e.message || e)))
  page.on('response', (r) => { if (r.status() === 403 && /mapbox\.com/.test(r.url())) forbidden.push(r.url()) })
  await page.addInitScript((tk) => { window.MAP_TOKEN = tk }, TOKEN)
  await page.goto(`${url}?provider=${provider}`, { waitUntil: 'load', timeout: 45000 })

  // Give the engine a real chance to paint before judging; a slow tile server is not a failure.
  const drew = await page.waitForFunction(() => {
    const deep = (root, out = []) => {
      for (const el of root.querySelectorAll('*')) {
        if (el.tagName === 'CANVAS') out.push(el)
        if (el.shadowRoot) deep(el.shadowRoot, out)
      }
      return out
    }
    const c = deep(document).find((x) => x.width > 0 && x.height > 0)
    if (!c) return null
    const engine = c.classList.contains('mapboxgl-canvas') ? 'mapbox'
      : c.classList.contains('maplibregl-canvas') ? 'maplibre' : 'other'
    // The map instance this repo already publishes for gates to read.
    const m = window.__rcmMap || window.__rdashMap || null
    let features = -1
    try { if (m && m.queryRenderedFeatures) features = m.queryRenderedFeatures().length } catch (_) { features = -1 }
    return { engine, features }
  }, { timeout: 30000 }).then((h) => h.jsonValue()).catch(() => null)

  return { drew, errs, forbidden }
}

const cur = await serve(DIR)
const browser = await chromium.launch({ args: ['--use-gl=swiftshader', '--enable-webgl', '--ignore-gpu-blocklist'] })
const base = `http://127.0.0.1:${cur.port}/${TREE_NAME}`
const fails = []
const notMeasured = []
const passes = []

for (const id of leaves) {
  const page = await browser.newPage()
  const { drew, errs, forbidden } = await measure(page, `${base}/${id}/`, 'mapbox')
  await page.close()

  const entitlement = forbidden.filter((u) => ENTITLEMENT.some((re) => re.test(u)))
  const otherForbidden = forbidden.filter((u) => !ENTITLEMENT.some((re) => re.test(u)))

  if (!drew) { notMeasured.push(`${id}: no sized canvas appeared within 30s`); continue }
  // ── 4. THE ENGINE. A silent fallback is the failure worth catching. ──
  if (drew.engine !== 'mapbox') { fails.push(`${id}: asked for ?provider=mapbox and the canvas that drew is ${drew.engine.toUpperCase()} — a silent fallback`); continue }
  if (otherForbidden.length) { fails.push(`${id}: 403 on ${otherForbidden[0]} — not the known entitlement endpoints`); continue }
  // ── 5/6. DREW, or an entitlement 403 that makes it unjudgeable. ──
  if (drew.features > 0) { passes.push(`${id}: mapbox canvas, ${drew.features} rendered feature(s)`); continue }
  if (entitlement.length) { notMeasured.push(`${id}: 0 features and an entitlement 403 (${entitlement[0].replace(/\?.*/, '')}) — tileset, not the embed`); continue }
  if (errs.length) { fails.push(`${id}: 0 rendered features, page error: ${errs[0].slice(0, 90)}`); continue }
  fails.push(`${id}: mapbox canvas drew 0 rendered features, and no 403 explains it`)
}

// ── 8. THE NEGATIVE ARM. If the engine assertion cannot fail, a green above means nothing. ─────
let armOk = false
{
  const page = await browser.newPage()
  const { drew } = await measure(page, `${base}/${leaves[0]}/`, 'maplibre')
  await page.close()
  armOk = !!drew && drew.engine === 'maplibre'
}
if (!armOk) fails.push('NEGATIVE ARM BROKEN: ?provider=maplibre did not draw with MapLibre, so the engine'
  + ' check cannot distinguish the engines and every pass above is unfalsifiable')

await browser.close(); cur.stop()

for (const p of passes) console.log(`  ✓ ${p}`)
for (const n of notMeasured) console.log(`  · NOT MEASURED ${n}`)
for (const f of fails) console.error(`  ✗ ${f}`)

// ── 9. THREE STATES ──
if (fails.length) { console.error(`MAPBOX-DREW: FAIL — ${fails.length} of ${leaves.length} leaf/leaves`); process.exit(1) }
if (!passes.length) { console.log(`MAPBOX-DREW: NOT MEASURED — nothing could be judged (${notMeasured.length} leaf/leaves blocked)`); process.exit(75) }
console.log(`MAPBOX-DREW: PASS — ${passes.length} of ${leaves.length} composed map leaf/leaves drew with Mapbox`
  + `${notMeasured.length ? `, ${notMeasured.length} not measurable on this token` : ''}; negative arm holds.`)