const automator = require('miniprogram-automator');
const path = require('path');

const PROJECT_PATH = path.resolve(__dirname, '../../unpackage/dist/dev/mp-weixin');
const CLI_PATH = 'D:\\wechat-dev-tools\\cli.bat';
const CLI_PORT = 45869;
const BASE_URL = 'http://192.168.110.64:8084/api';

let miniProgram = null;

/**
 * 启动微信小程序
 */
async function launchMiniProgram() {
  miniProgram = await automator.launch({
    projectPath: PROJECT_PATH,
    cliPath: CLI_PATH,
    port: CLI_PORT
  });
  return miniProgram;
}

/**
 * 关闭小程序连接
 */
async function closeMiniProgram() {
  if (miniProgram) {
    try {
      await miniProgram.close();
    } catch (e) {
      console.warn('[automator] 关闭小程序失败:', e.message);
    }
    miniProgram = null;
  }
}

/**
 * 获取当前 miniProgram 实例
 */
function getMiniProgram() {
  return miniProgram;
}

/**
 * 等待指定毫秒
 */
function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

/**
 * 教练端通过 username/password 登录
 * @param {object} mp - miniProgram 实例
 * @param {string} username
 * @param {string} password
 */
async function loginAsCoach(mp, username = 'coach_test1', password = 'Test@123') {
  await sleep(1500);
  const page = await mp.currentPage();

  // 等待登录表单渲染
  await page.waitFor('input', { timeout: 10000 });

  // 填写用户名
  const inputs = await page.$$('input');
  if (inputs.length >= 2) {
    await inputs[0].input(username);
    await sleep(300);
    await inputs[1].input(password);
    await sleep(300);

    // 点击登录按钮
    const loginBtn = await page.$('.login-btn');
    if (loginBtn) {
      await loginBtn.tap();
    }
  }
}

/**
 * 等待页面跳转（用于登录成功后等待首页加载）
 * @param {object} mp - miniProgram 实例
 * @param {string} targetPath - 目标页面路径，如 'pages/index/index'
 * @param {number} timeoutMs
 */
async function waitForPage(mp, targetPath, timeoutMs = 15000) {
  const startTime = Date.now();
  while (Date.now() - startTime < timeoutMs) {
    try {
      const page = await mp.currentPage();
      if (page.path.includes(targetPath)) {
        return page;
      }
    } catch (e) {
      // 页面切换中，忽略错误
    }
    await sleep(500);
  }
  throw new Error(`等待页面 "${targetPath}" 超时 (${timeoutMs}ms)`);
}

/**
 * 导航到指定页面
 * @param {object} mp - miniProgram 实例
 * @param {string} url - 小程序页面路径，如 '/pages/course-list/course-list'
 */
async function navigateTo(mp, url) {
  await mp.navigateTo(url);
  await sleep(1500);
  return mp.currentPage();
}

/**
 * 检查后端服务可用性
 */
async function checkBackendHealth() {
  const http = require('http');
  return new Promise((resolve) => {
    const req = http.get(BASE_URL + '/auth/login', { timeout: 10000 }, (res) => {
      resolve(true);
    });
    req.on('error', () => {
      console.warn('[automator] 后端服务不可达:', BASE_URL);
      resolve(false);
    });
    req.on('timeout', () => {
      req.destroy();
      console.warn('[automator] 后端服务连接超时:', BASE_URL);
      resolve(false);
    });
  });
}

module.exports = {
  launchMiniProgram,
  closeMiniProgram,
  getMiniProgram,
  loginAsCoach,
  waitForPage,
  navigateTo,
  sleep,
  checkBackendHealth,
  BASE_URL,
  CLI_PORT
};