import assert from 'node:assert/strict';
import { existsSync, readFileSync, readdirSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const frontendRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const outputDirectory = path.join(frontendRoot, 'dist');
const htmlFiles = readdirSync(frontendRoot).filter((fileName) => fileName.endsWith('.html'));

assert.ok(existsSync(path.join(outputDirectory, 'index.html')), 'dist/index.html is missing');
assert.ok(existsSync(path.join(outputDirectory, 'favicon.ico')), 'dist/favicon.ico is missing');
assert.strictEqual(existsSync(path.join(outputDirectory, 'downloads')), false, 'runtime installers must stay outside dist');

for (const fileName of htmlFiles) {
  const sourceHtml = readFileSync(path.join(frontendRoot, fileName), 'utf8');
  const builtHtmlPath = path.join(outputDirectory, fileName);
  assert.strictEqual(/\?v=\d+/.test(sourceHtml), false, `${fileName} still uses a manual cache version`);
  assert.ok(existsSync(builtHtmlPath), `${fileName} was not emitted`);

  const builtHtml = readFileSync(builtHtmlPath, 'utf8');
  const assetUrls = [...builtHtml.matchAll(/(?:src|href)="(\/(?:assets|libs)\/[^"?#]+)"/g)]
    .map((match) => match[1]);
  for (const assetUrl of assetUrls) {
    const assetPath = path.join(outputDirectory, ...assetUrl.split('/').filter(Boolean));
    assert.ok(existsSync(assetPath), `${fileName} references missing asset ${assetUrl}`);
  }
}

for (const fileName of ['app.html', 'share.html']) {
  const html = readFileSync(path.join(outputDirectory, fileName), 'utf8');
  assert.ok(/\/assets\/[^"']+\.js/.test(html), `${fileName} is not using a bundled module`);
  assert.strictEqual(/vue\.global(?:\.prod)?\.js|axios\.min\.js/.test(html), false, `${fileName} still loads global Vue/Axios`);
}

console.log(`Verified ${htmlFiles.length} HTML entries and their emitted assets.`);