import assert from 'node:assert/strict';
import net from 'node:net';
import test from 'node:test';

import { checkLocalRedis } from './run-test-api.mjs';

function listenOnLoopback() {
  const server = net.createServer();
  return new Promise((resolve, reject) => {
    server.once('error', reject);
    server.listen(0, '127.0.0.1', () => resolve(server));
  });
}

function closeServer(server) {
  return new Promise((resolve, reject) => {
    server.close((error) => (error ? reject(error) : resolve()));
  });
}

test('Redis 不可达时给出外部服务提示并拒绝启动', async () => {
  const server = await listenOnLoopback();
  const address = server.address();
  assert.ok(address && typeof address !== 'string');
  await closeServer(server);

  await assert.rejects(
    checkLocalRedis({ host: '127.0.0.1', port: address.port, timeoutMs: 100 }),
    /本机 Redis.*127\.0\.0\.1:6379.*启动后重试/,
  );
});

test('Redis TCP 可达时预检通过', async (context) => {
  const server = await listenOnLoopback();
  context.after(() => closeServer(server));
  const address = server.address();
  assert.ok(address && typeof address !== 'string');

  await assert.doesNotReject(() =>
    checkLocalRedis({ host: '127.0.0.1', port: address.port, timeoutMs: 100 }),
  );
});