'use strict';

const path = require('path');
const { chromium } = require('playwright');
const db = require('../src/core/database');
const { openBrowserWithRetry, closeBrowser } = require('../src/core/bit_api');
const { createGmailAppPassword } = require('../src/services/gmail_app_password_service');

async function inspectPage(page, email) {
  return page.evaluate(targetEmail => {
    const visible = element => {
      const style = window.getComputedStyle(element);
      return style.display !== 'none' && style.visibility !== 'hidden';
    };
    const clean = value => String(value || '')
      .replace(new RegExp(targetEmail.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'ig'), '[email]')
      .replace(/\s+/g, ' ')
      .trim();
    return {
      title: document.title,
      bodyText: clean(document.body && document.body.innerText).slice(0, 1200),
      inputs: [...document.querySelectorAll('input')].filter(visible).map(input => ({
        type: input.type,
        name: input.name,
        id: input.id,
        ariaLabel: input.getAttribute('aria-label'),
        placeholder: input.getAttribute('placeholder'),
        hasValue: !!input.value,
      })),
      buttons: [...document.querySelectorAll('button, [role="button"]')].filter(visible)
        .map(button => clean(button.innerText || button.getAttribute('aria-label')))
        .filter(Boolean)
        .slice(0, 30),
    };
  }, email).catch(() => ({ title: '', bodyText: '', inputs: [], buttons: [] }));
}

async function main() {
  const email = String(process.argv[2] || '').trim();
  if (!email) throw new Error('用法: node scripts/obtain_gmail_app_password.js <email>');

  db.initDB();
  const account = db.getAllAccounts().find(item => String(item.email || '').toLowerCase() === email.toLowerCase());
  if (!account) throw new Error('数据库中不存在该邮箱');
  if (!account.browser_id) throw new Error('该邮箱没有浏览器编号');
  if (db.hasGmailAppPassword(email)) {
    console.log(JSON.stringify({ ok: true, alreadySaved: true, email }));
    return;
  }

  const opened = await openBrowserWithRetry(account.browser_id, {
    email,
    logCallback: message => console.log(message),
  });
  if (!opened || !opened.success || !opened.data || !opened.data.ws) {
    throw new Error(`打开比特浏览器失败：${opened && opened.msg ? opened.msg : '无 ws 端点'}`);
  }

  let browser;
  let page;
  let succeeded = false;
  try {
    browser = await chromium.connectOverCDP(opened.data.ws);
    const context = browser.contexts()[0];
    page = await context.newPage();
    await page.bringToFront().catch(() => {});
    const result = await createGmailAppPassword(page, account, message => console.log(message), {
      appName: 'zhaoqiaoqing2001',
      timeoutMs: 60000,
      captchaWaitMs: 5 * 60 * 1000,
    });

    if (result.ok && result.appPassword) {
      db.upsertGmailAppPassword(email, result.appPassword);
      succeeded = true;
      console.log(JSON.stringify({ ok: true, saved: true, email, passwordLength: result.appPassword.length }));
      return;
    }

    const inspection = await inspectPage(page, email);
    const screenshotPath = path.join(
      db.getDb().name ? path.dirname(db.getDb().name) : path.join(__dirname, '..', 'data'),
      'screenshots',
      `gmail_app_password_${email.replace(/[^a-z0-9]+/gi, '_')}.png`,
    );
    await page.screenshot({ path: screenshotPath, fullPage: true }).catch(() => {});
    console.log(JSON.stringify({
      ok: false,
      email,
      message: result.msg,
      url: page.url(),
      inspection,
      screenshotPath,
    }));
    process.exitCode = 2;
  } finally {
    if (browser) await browser.close().catch(() => {});
    if (succeeded) await closeBrowser(account.browser_id).catch(() => {});
  }
}

main().catch(error => {
  console.error(JSON.stringify({ ok: false, message: error.message }));
  process.exitCode = 1;
});