#!/usr/bin/env node
// Verifies that every asset path in AssetsConstants.ts and index.html exists.
// A wrong path builds fine and only 404s at runtime.

import { existsSync, readFileSync, readdirSync } from 'node:fs';
import { join, dirname, extname } from 'node:path';
import { fileURLToPath } from 'node:url';

const srcDir = join(dirname(fileURLToPath(import.meta.url)), '..', 'src');
const EXTENSIONS = new Set(['.ts', '.html', '.scss', '.json']);

function* walk(dir) {
  for (const entry of readdirSync(dir, { withFileTypes: true })) {
    const path = join(dir, entry.name);
    if (entry.isDirectory()) {
      yield* walk(path);
    } else if (EXTENSIONS.has(extname(path)) && !path.endsWith('.spec.ts')) {
      yield path;
    }
  }
}

const missing = [];
for (const file of walk(srcDir)) {
  const content = readFileSync(file, 'utf8');
  for (const [, path] of content.matchAll(/\b(assets\/[\w./-]+)/g)) {
    if (!existsSync(join(srcDir, path))) {
      missing.push(`${file}: ${path}`);
    }
  }
}

if (missing.length > 0) {
  console.error(`Missing assets:\n${missing.join('\n')}`);
  process.exit(1);
}
console.log('All referenced assets exist.');