/**
 * 店小秘全自动登录 v5
 * 用 jQuery 设值 + 点击按钮 + 监听 API
 */
import { chromium } from 'playwright';
import { writeFileSync, readFileSync, existsSync, mkdirSync } from 'fs';
import { execSync } from 'child_process';
import sharp from 'sharp';

const COOKIE_FILE = './cookies.json';
const SCREENSHOTS_DIR = './screenshots';
const DOWNLOAD_DIR = './downloads';
const MAX_RETRIES = 15;

mkdirSync(SCREENSHOTS_DIR, { recursive: true });
mkdirSync(DOWNLOAD_DIR, { recursive: true });

async function ocrCaptcha(page) {
  const captchaImg = await page.$('#verifyImgCode');
  if (!captchaImg) return null;

  const rawPath = `${SCREENSHOTS_DIR}/captcha_raw.png`;
  await captchaImg.screenshot({ path: rawPath });

  const presets = [
    async (s, d) => sharp(s).grayscale().resize({ width: 468 }).normalize().sharpen({ sigma: 1.5 }).threshold(130).toFile(d),
    async (s, d) => sharp(s).grayscale().resize({ width: 468 }).normalize().threshold(100).toFile(d),
    async (s, d) => sharp(s).grayscale().resize({ width: 468 }).normalize().threshold(160).toFile(d),
    async (s, d) => sharp(s).resize({ width: 468 }).toFile(d),
    async (s, d) => sharp(s).grayscale().resize({ width: 468 }).negate().normalize().threshold(128).toFile(d),
  ];

  for (let i = 0; i < presets.length; i++) {
    const p = `${SCREENSHOTS_DIR}/cap_p${i}.png`;
    try { await presets[i](rawPath, p); } catch { continue; }
    for (const psm of ['7', '8']) {
      try {
        const r = execSync(
          `tesseract "${p}" stdout --psm ${psm} -c tessedit_char_whitelist=0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ`,
          { encoding: 'utf-8', timeout: 10000 }
        ).trim().replace(/[\s\n\r]/g, '');
        if (r && r.length === 4) return r;
      } catch {}
    }
  }
  // fallback: 任何 >=3 字符
  for (let i = 0; i < presets.length; i++) {
    const p = `${SCREENSHOTS_DIR}/cap_p${i}.png`;
    if (!existsSync(p)) continue;
    try {
      const r = execSync(
        `tesseract "${p}" stdout --psm 7 -c tessedit_char_whitelist=0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ`,
        { encoding: 'utf-8', timeout: 10000 }
      ).trim().replace(/[\s\n\r]/g, '');
      if (r && r.length >= 3) return r.substring(0, 4);
    } catch {}
  }
  return null;
}

async function main() {
  console.log('====== 店小秘全自动登录 v5 ======\n');

  const browser = await chromium.launch({ headless: true, args: ['--no-sandbox'] });
  const context = await browser.newContext({
    viewport: { width: 1920, height: 1080 },
    locale: 'zh-CN',
    userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
  });
  const page = await context.newPage();

  // 先试 Cookie
  if (existsSync(COOKIE_FILE)) {
    console.log('>> 尝试复用 Cookie...');
    const cookies = JSON.parse(readFileSync(COOKIE_FILE, 'utf-8'));
    await context.addCookies(cookies);
    await page.goto('https://www.dianxiaomi.com/saleManage/index.htm', {
      waitUntil: 'domcontentloaded', timeout: 20000
    }).catch(() => {});
    const title = await page.title();
    if (!title.includes('Error') && !page.url().includes('/home.htm') && !page.url().includes('/index.htm')) {
      console.log('>> Cookie 有效！');
      return { success: true, page, context, browser };
    }
    console.log('>> Cookie 无效\n');
    await context.clearCookies();
  }

  // 打开登录页
  await page.goto('https://www.dianxiaomi.com/home.htm', { waitUntil: 'networkidle', timeout: 30000 });

  for (let attempt = 1; attempt <= MAX_RETRIES; attempt++) {
    console.log(`\n>> 第 ${attempt}/${MAX_RETRIES} 次尝试...`);

    // 确保在登录页
    if (!page.url().includes('home.htm') && !page.url().includes('index.htm')) {
      await page.goto('https://www.dianxiaomi.com/home.htm', { waitUntil: 'networkidle', timeout: 30000 });
    }

    // 刷新验证码
    if (attempt > 1) {
      await page.evaluate(() => {
        const img = document.getElementById('verifyImgCode');
        if (img) img.src = '/verify/code.htm?t=' + Date.now();
      });
      await page.waitForTimeout(1500);
    }

    // 用 jQuery 设置表单值（确保 .val() 能读到）
    await page.evaluate(() => {
      if (typeof $ !== 'undefined') {
        $('#exampleInputName').val('MiLe-kf01').trigger('change').trigger('input');
        $('#exampleInputPassword').val('Vxdas@302').trigger('change').trigger('input');
      }
    });

    // OCR 验证码
    const code = await ocrCaptcha(page);
    if (!code) { console.log('  OCR 失败'); continue; }
    console.log(`  验证码: "${code}"`);

    // 用 jQuery 设验证码
    await page.evaluate((c) => {
      if (typeof $ !== 'undefined') {
        $('#verifyCode').val(c).trigger('change').trigger('input');
      }
    }, code);

    // 截图确认
    await page.screenshot({ path: `${SCREENSHOTS_DIR}/attempt-${attempt}.png` });

    // 验证 jQuery 读到的值
    const formValues = await page.evaluate(() => {
      if (typeof $ === 'undefined') return { error: 'no jQuery' };
      return {
        account: $.trim($('#exampleInputName').val()),
        password: $.trim($('#exampleInputPassword').val()),
        verifyCode: $.trim($('#verifyCode').val()),
      };
    });
    console.log(`  表单值: ${JSON.stringify(formValues)}`);

    // 监听 API 响应
    const apiResponsePromise = page.waitForResponse(
      resp => resp.url().includes('userLoginNew2.json'),
      { timeout: 15000 }
    ).catch(() => null);

    // 点击登录按钮（按钮 onclick="login()"）
    console.log('  点击登录按钮...');
    await page.click('#loginBtn');

    // 等待 API 响应
    const apiResp = await apiResponsePromise;

    if (apiResp) {
      let data;
      try {
        data = await apiResp.json();
      } catch {
        const text = await apiResp.text().catch(() => '');
        console.log(`  API 原始响应: ${text.substring(0, 200)}`);
        data = {};
      }
      console.log(`  API 响应: ${JSON.stringify(data)}`);

      if (data.code === 0 || (data.url && data.url !== '')) {
        console.log('\n>> ★★★ 登录成功！★★★');

        // 等待页面跳转
        await page.waitForTimeout(3000);
        const afterUrl = page.url();
        console.log('>> 自动跳转到:', afterUrl);

        // 如果没跳转，手动去
        if (afterUrl.includes('/home.htm') || afterUrl.includes('/index.htm')) {
          const target = data.url ? ('https://www.dianxiaomi.com' + data.url) : 'https://www.dianxiaomi.com/saleManage/index.htm';
          await page.goto(target, { waitUntil: 'networkidle', timeout: 30000 }).catch(() => {});
        }

        // 保存 Cookie
        const cookies = await context.cookies();
        writeFileSync(COOKIE_FILE, JSON.stringify(cookies, null, 2));
        console.log(`>> Cookie 已保存（${cookies.length} 条）`);
        console.log('>> 当前 URL:', page.url());

        return { success: true, page, context, browser };
      }

      const errMsg = data.error || JSON.stringify(data);
      console.log(`  失败: ${errMsg}`);

      if (errMsg.includes('账号') || errMsg.includes('密码错误') || errMsg.includes('不存在') || errMsg.includes('锁定')) {
        console.log('>> 账号/密码问题，停止');
        break;
      }
    } else {
      console.log('  未收到 API 响应');
      await page.waitForTimeout(2000);

      // 也许已经登录跳转了
      const url = page.url();
      if (!url.includes('/home.htm') && !url.includes('/index.htm')) {
        console.log('>> 已跳转到:', url);
        const cookies = await context.cookies();
        writeFileSync(COOKIE_FILE, JSON.stringify(cookies, null, 2));
        return { success: true, page, context, browser };
      }
    }
  }

  await page.screenshot({ path: `${SCREENSHOTS_DIR}/final-fail.png`, fullPage: true });
  await browser.close();
  return { success: false };
}

// ====== 探索后台 ======
async function explore(page) {
  console.log('\n>> ===== 探索后台 =====');
  console.log(`>> URL: ${page.url()}`);
  console.log(`>> 标题: ${await page.title()}`);

  await page.screenshot({ path: `${SCREENSHOTS_DIR}/backend-main.png`, fullPage: true });

  const text = await page.evaluate(() => document.body?.innerText?.substring(0, 5000));
  console.log('>> 页面文本:\n', text);

  const links = await page.$$eval('a', els =>
    els.map(el => ({
      text: el.textContent.trim().replace(/\s+/g, ' ').substring(0, 60),
      href: el.href,
    })).filter(e => e.text && e.href?.includes('dianxiaomi'))
    .filter((e, i, arr) => arr.findIndex(a => a.href === e.href) === i)
  );

  console.log(`\n>> 链接（${links.length} 个）：`);
  for (const l of links) {
    const star = ['采购', '仓库', '导出', '库存', '备货', '建议'].some(k => l.text.includes(k)) ? '★' : ' ';
    console.log(`  ${star} [${l.text}] ${l.href}`);
  }

  // 访问几个关键页面截图
  const paths = [
    '/saleManage/index.htm',
    '/purchaseManage/purchaseSuggestion.htm',
    '/purchaseManage/purchaseOrder.htm',
    '/stockManage/stockList.htm',
  ];

  for (const p of paths) {
    try {
      await page.goto(`https://www.dianxiaomi.com${p}`, { waitUntil: 'domcontentloaded', timeout: 10000 });
      const t = await page.title();
      const ok = !t.includes('Error');
      console.log(`\n  ${ok ? '✓' : '✗'} ${p} [${t}]`);
      if (ok) {
        await page.screenshot({ path: `${SCREENSHOTS_DIR}/page${p.replace(/\//g, '_')}.png`, fullPage: true });
        // 打印页面所有按钮
        const btns = await page.$$eval('button, a.btn, .btn, [class*="export"], [class*="download"]', els =>
          els.map(el => ({ tag: el.tagName, text: el.textContent.trim().substring(0, 50), id: el.id, cls: (el.className || '').substring(0, 60) }))
          .filter(e => e.text)
          .slice(0, 30)
        );
        if (btns.length) {
          console.log('  按钮：');
          btns.forEach(b => console.log(`    ${b.tag}#${b.id} .${b.cls}: "${b.text}"`));
        }
        // 特别查找导出
        const exportBtns = btns.filter(b => b.text.includes('导出'));
        if (exportBtns.length) {
          console.log('  ★ 导出按钮：');
          exportBtns.forEach(b => console.log(`    ${b.tag}#${b.id}: "${b.text}"`));
        }
      }
    } catch { console.log(`  ✗ ${p} 超时`); }
  }
}

const result = await main();
if (result.success) {
  await explore(result.page);
  await result.browser.close();
} else {
  process.exit(1);
}