import test from 'node:test';
import assert from 'node:assert/strict';
import { spawnSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';
import { dirname, resolve } from 'node:path';
import net from 'node:net';

const __dirname = dirname(fileURLToPath(import.meta.url));
const repoRoot = resolve(__dirname, '..');
const scriptPath = resolve(repoRoot, 'scripts/dev/operator-dashboard-dev.sh');

test('operator dashboard dev script fails fast on a stale occupied upstream port', async (t) => {
  const server = net.createServer();
  await new Promise((resolvePromise, reject) => {
    server.once('error', reject);
    server.listen(0, '127.0.0.1', resolvePromise);
  });
  t.after(() => server.close());

  const port = server.address().port;
  const startedAt = Date.now();
  const result = spawnSync('bash', [scriptPath], {
    cwd: repoRoot,
    encoding: 'utf8',
    timeout: 2_000,
    env: {
      ...process.env,
      OPERATOR_DASHBOARD_DEV_BASIC_AUTH_PASSWORD: 'test-password',
      OPERATOR_DASHBOARD_DEV_UPSTREAM_PORT: String(port),
      OPERATOR_DASHBOARD_DEV_EXISTING_PORT_TIMEOUT_SECONDS: '0.2',
      OPERATOR_DASHBOARD_DEV_READY_ATTEMPTS: '50',
    },
  });

  assert.notEqual(result.error?.code, 'ETIMEDOUT');
  assert.notEqual(result.status, 0);
  assert.ok(Date.now() - startedAt < 1_500);
  assert.match(result.stderr, /already in use but \/healthz did not respond/);
});