import { chromium } from 'playwright';
import config from '../config.js';
import { loadCookies, saveScreenshot, getHumanReadableTimestamp } from './common-utils.js';

/**
 * 创建浏览器实例和上下文
 * @param {string} cookieFile - Cookie 文件路径
 * @returns {Object} { browser, context, page }
 */
export async function createBrowserSession(cookieFile) {
  console.log('启动浏览器...');
  const browser = await chromium.launch(config.browserOptions);
  const context = await browser.newContext();

  // 读取并设置cookies
  const cookies = loadCookies(cookieFile);
  await context.addCookies(cookies);

  const page = await context.newPage();

  return { browser, context, page };
}

/**
 * 导航到 WebIDE 页面并验证登录状态
 * @param {Object} page - Playwright 页面对象
 */
export async function navigateToWebIDE(page) {
  console.log('导航到WebIDE页面...');
  await page.goto(config.webideUrl);

  // 等待页面加载
  await page.waitForTimeout(config.waitTimes.pageLoad);

  console.log('当前页面URL:', page.url());
  console.log('页面标题:', await page.title());

  // 检查是否成功登录
  try {
    await page.waitForSelector(config.selectors.editor, {
      timeout: 60000
    });
    console.log('成功进入WebIDE界面');
    return true;
  } catch (error) {
    console.log('警告: 未检测到编辑器界面，可能需要重新登录');
    return false;
  }
}

/**
 * 处理模态对话框
 * @param {Object} page - Playwright 页面对象
 */
export async function handleModalDialog(page) {
  try {
    const dialogButton = await page.waitForSelector(config.selectors.dialogButton, { timeout: 30000 });
    if (dialogButton && await dialogButton.isVisible()) {
      console.log('发现模态对话框按钮，点击处理...');
      await dialogButton.click();
      await page.waitForTimeout(500);
      return true;
    }
  } catch (error) {
    // 没有找到对话框按钮，继续执行
    console.log('未发现模态对话框，继续执行...');
  }
  return false;
}

/**
 * 打开终端
 * @param {Object} page - Playwright 页面对象
 * @returns {Object|null} 终端元素或 null
 */
export async function openTerminal(page) {
  console.log('尝试打开终端 (Ctrl+~)...');

  // 确保页面获得焦点
  await page.click('body');
  await page.waitForTimeout(500);

  // 按下 Ctrl+~ 打开终端
  await page.keyboard.press('Control+`');

  // 等待终端打开
  await page.waitForTimeout(config.waitTimes.terminalOpen);

  // 尝试多种方式查找终端
  const terminalSelectors = config.selectors.terminals;

  let terminalFound = false;
  let terminalElement = null;

  for (const selector of terminalSelectors) {
    try {
      terminalElement = await page.waitForSelector(selector, { timeout: 2000 });
      if (terminalElement) {
        console.log(`找到终端元素: ${selector}`);
        terminalFound = true;
        break;
      }
    } catch (error) {
      // 继续尝试下一个选择器
    }
  }

  if (!terminalFound) {
    console.log('未找到终端元素，尝试直接输入命令...');
    return null;
  } else {
    // 点击终端区域确保焦点
    await terminalElement.click();
    await page.waitForTimeout(500);
    return terminalElement;
  }
}

/**
 * 在终端中执行命令
 * @param {Object} page - Playwright 页面对象
 * @param {string} command - 要执行的命令
 */
export async function executeTerminalCommand(page, command) {
  console.log(`执行命令: ${command}`);

  // 输入命令
  await page.keyboard.type(command);
  await page.waitForTimeout(500);

  // 按回车执行命令
  await page.keyboard.press('Enter');

  // 等待命令执行
  await page.waitForTimeout(config.waitTimes.commandExecution);

  console.log('命令已执行');
}

/**
 * 完整的命令执行流程
 * @param {Object} page - Playwright 页面对象
 * @param {string} screenshotPrefix - 截图文件名前缀
 * @returns {boolean} 执行是否成功
 */
export async function executeCommandFlow(page, screenshotPrefix = 'screenshot') {
  try {
    // 处理模态对话框
    await handleModalDialog(page);

    // 打开终端
    await openTerminal(page);

    // 执行命令
    await executeTerminalCommand(page, config.command);

    // 截图保存执行结果
    // const screenshotDir = config.screenshotDir || './screenshots';
    // const screenshotPath = await saveScreenshot(page, screenshotDir, screenshotPrefix);

    return true;
  } catch (error) {
    console.error(`[${getHumanReadableTimestamp()}] 执行命令时发生错误:`, error);
    return false;
  }
}