// Validate npm's resolution from only the committed manifests, with no node_modules.
import { spawnSync } from 'node:child_process';
import { copyFileSync, mkdtempSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import { fileURLToPath } from 'node:url';

if (!process.env.npm_execpath) throw new Error('Run npm run test:install.');
const fixture = mkdtempSync(join(tmpdir(), 'webka-install-'));
try {
  for (const file of ['package.json', 'package-lock.json']) {
    copyFileSync(fileURLToPath(new URL(`../frontend/${file}`, import.meta.url)), join(fixture, file));
  }
  const result = spawnSync(process.execPath, [process.env.npm_execpath, 'ci', '--dry-run', '--ignore-scripts', '--no-audit', '--no-fund'], { cwd: fixture, encoding: 'utf8', timeout: 180000 });
  if (result.error || result.status !== 0) {
    console.error(result.stderr || result.error?.message || 'Clean lockfile validation failed.');
    process.exitCode = 1;
  } else console.log('PASS: npm ci accepts the frontend lockfile without an existing node_modules directory.');
} finally {
  rmSync(fixture, { recursive: true, force: true });
}