import assert from 'node:assert/strict';
import { readFileSync, readdirSync, statSync } from 'node:fs';
import { join } from 'node:path';

const maxAssetBytes = 25 * 1024 * 1024;
function files(root, relative = '') {
  return readdirSync(join(root, relative), { withFileTypes: true }).flatMap(entry => {
    const path = join(relative, entry.name);
    return entry.isDirectory() ? files(root, path) : [path];
  });
}

const built = files('dist');
for (const file of built) {
  const bytes = statSync(join('dist', file)).size;
  assert(bytes <= maxAssetBytes, `${file}: ${bytes} bytes exceeds Sites' ${maxAssetBytes}-byte asset limit`);
}
for (const file of files('public')) {
  assert(readFileSync(join('public', file)).equals(readFileSync(join('dist', file))), `${file}: public asset changed or missing in build`);
}
const html = readFileSync('dist/index.html', 'utf8');
assert(html.includes('id="sample"'), 'Sample button is missing');
assert(html.includes('value="dog1"'), 'Recommended sample option is missing');
for (const match of html.matchAll(/(?:src|href)="(\/assets\/[^"?#]+)"/g)) {
  assert(built.includes(match[1].slice(1)), `Missing HTML asset ${match[1]}`);
}
const js = built.filter(file => file.endsWith('.js')).map(file => readFileSync(join('dist', file), 'utf8')).join('\n');
for (const id of ['dog1', 'dog2', 'dog3', 'dog4']) {
  const path = `assets/samples/${id}.jpg`;
  assert(built.includes(path), `Missing sample ${path}`);
  assert(statSync(join('dist', path)).size < 1_000_000, `${path} must be under 1 MB`);
  assert(html.includes('/' + path), `Missing sample thumbnail ${path}`);
}
assert(js.includes('/assets/samples/'), 'Sample loader path missing');
assert(!/(?:sample-pet|assets\/qa\/dog)/.test(html + js), 'Retired sample reference in shipped bundle');
assert(!built.some(file => /(?:sample-pet|assets\/qa\/dog)/.test(file)), 'Retired sample asset shipped');
assert(js.includes('https://cdn.jsdelivr.net/npm/onnxruntime-web@'), 'Transformers runtime CDN configuration is missing');
assert(!built.some(file => /(?:assets\/countryside\/|CountrysideExperience)/i.test(file)), 'Retired photo-composite scene must not ship');
assert(built.includes('models/u2netp/model.onnx'),'Explicit opt-in small model is missing');
assert(built.filter(file=>file.endsWith('.onnx')).length===1,'Unexpected additional model');
assert(!/(?:cutout-review|countryside-start|scene-mode)/.test(html), 'Retired scene entry is still present');
assert(!/(?:CountrysideExperience|\/assets\/countryside\/)/.test(js), 'Retired scene runtime can still be requested');
assert(js.includes('이 누끼로 배치'),'Experiment must retain explicit review acceptance');

console.log(`Sites build checks passed: ${built.length} assets within 25 MiB, public assets byte-matched, sample UI/paths and runtime CDN configuration preserved, opt-in small cutout model present, retired photo-composite scene absent. Browser rendering and AI inference are separate checks.`);