WechatOnCloud/.github/scripts/tg-notify.mjs

// 发布 / 新 issue → Telegram 群通知。把 GitHub Markdown 转成 Telegram 支持的 HTML 再发，
// 失败则回退纯文本，保证必达。无服务器，跑在 GitHub Actions（telegram-notify.yml）。
//
// 事件来源（env EVENT）：
//   release           —— 发布事件，用 release 的 payload
//   issues            —— 新 issue 事件，用 issue 的 payload
//   workflow_dispatch —— 手动触发，拉「最新 release」渲染发送（用于测试渲染效果）

const TG = process.env.TG_TOKEN;
const CHAT = process.env.TG_CHAT;
const EVENT = process.env.EVENT || '';
if (!TG || !CHAT) {
  console.log('TELEGRAM_BOT_TOKEN / TELEGRAM_CHAT_ID 未配置，跳过');
  process.exit(0);
}

const esc = (s) => (s || '').replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');

// 行内 Markdown → Telegram HTML（在已 HTML-escape 的文本上运行）
function inlineMd(s) {
  s = s.replace(/\[([^\]]+)\]\(([^)\s]+)\)/g, (_, t, u) => `<a href="${u.replace(/"/g, '&quot;')}">${t}</a>`);
  s = s.replace(/\*\*([^*]+?)\*\*/g, '<b>$1</b>');
  s = s.replace(/__([^_]+?)__/g, '<b>$1</b>');
  s = s.replace(/(^|[^*])\*([^*\n]+?)\*(?!\*)/g, '$1<i>$2</i>');
  return s;
}

// GitHub Markdown → Telegram HTML。Telegram 不支持标题/表格/列表标记，转成粗体/·/• 等。
function mdToHtml(md) {
  const blocks = [];
  md = md.replace(/```[^\n]*\n([\s\S]*?)```/g, (_, code) => {
    blocks.push('<pre>' + esc(code.replace(/\n$/, '')) + '</pre>');
    return `B${blocks.length - 1}`;
  });
  const codes = [];
  md = md.replace(/`([^`\n]+)`/g, (_, c) => {
    codes.push('<code>' + esc(c) + '</code>');
    return `C${codes.length - 1}`;
  });

  const out = [];
  for (const line of md.split('\n')) {
    // 表格分隔行（|---|---|）跳过
    if (/^\s*\|[\s:|-]+\|\s*$/.test(line) && line.includes('-')) continue;
    // 分割线
    if (/^\s*([-*_])\1{2,}\s*$/.test(line)) continue;
    let m;
    if ((m = line.match(/^\s{0,3}#{1,6}\s+(.*)$/))) {
      out.push('<b>' + inlineMd(esc(m[1])) + '</b>');
    } else if ((m = line.match(/^\s*>\s?(.*)$/))) {
      out.push('▎ ' + inlineMd(esc(m[1])));
    } else if ((m = line.match(/^(\s*)[-*]\s+(.*)$/))) {
      out.push(m[1] + '• ' + inlineMd(esc(m[2])));
    } else if ((m = line.match(/^(\s*)(\d+)\.\s+(.*)$/))) {
      out.push(m[1] + m[2] + '. ' + inlineMd(esc(m[3])));
    } else if (/^\s*\|.*\|\s*$/.test(line)) {
      const cells = line.trim().replace(/^\|/, '').replace(/\|$/, '').split('|').map((c) => inlineMd(esc(c.trim())));
      out.push(cells.filter(Boolean).join(' · '));
    } else {
      out.push(inlineMd(esc(line)));
    }
  }
  let res = out.join('\n').replace(/C(\d+)/g, (_, i) => codes[+i]).replace(/B(\d+)/g, (_, i) => blocks[+i]);
  return res.replace(/\n{3,}/g, '\n\n').trim();
}

const stripTags = (s) => s.replace(/<[^>]+>/g, '').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&amp;/g, '&').replace(/&quot;/g, '"');

async function ghLatestRelease() {
  const repo = process.env.REPO;
  const headers = { accept: 'application/vnd.github+json', 'user-agent': 'woc-tg' };
  if (process.env.GH_TOKEN) headers.authorization = `Bearer ${process.env.GH_TOKEN}`;
  const r = await fetch(`https://api.github.com/repos/${repo}/releases/latest`, { headers });
  if (!r.ok) throw new Error('latest release ' + r.status);
  return r.json();
}

async function send(text, mode) {
  const r = await fetch(`https://api.telegram.org/bot${TG}/sendMessage`, {
    method: 'POST',
    headers: { 'content-type': 'application/json' },
    body: JSON.stringify({ chat_id: CHAT, text, parse_mode: mode || undefined, disable_web_page_preview: false }),
  });
  return r.json();
}

(async () => {
  let htmlText;
  let plainText;

  if (EVENT === 'issues') {
    const num = process.env.I_NUM || '';
    const title = process.env.I_TITLE || '';
    const url = process.env.I_URL || '';
    const user = process.env.I_USER || '';
    const body = (process.env.I_BODY || '').slice(0, 800);
    htmlText = `🐛 <b>新反馈 Issue #${esc(num)}：${esc(title)}</b>\n👤 by ${esc(user)}\n\n${mdToHtml(body)}\n\n🔗 ${esc(url)}`;
    plainText = `🐛 新反馈 Issue #${num}：${title}\n👤 by ${user}\n\n${body}\n\n🔗 ${url}`;
  } else {
    // release 或 手动触发（拉最新 release）
    let tag = process.env.R_TAG || '';
    let name = process.env.R_NAME || '';
    let url = process.env.R_URL || '';
    let body = process.env.R_BODY || '';
    if (!tag) {
      const rel = await ghLatestRelease();
      tag = rel.tag_name || '';
      name = rel.name || '';
      url = rel.html_url || '';
      body = rel.body || '';
    }
    body = body.slice(0, 3500);
    const titleTxt = `🚀 云微 WechatOnCloud ${tag}${name && name !== tag ? ' — ' + name : ''} 已发布`;
    htmlText = `<b>${esc(titleTxt)}</b>\n\n${mdToHtml(body)}\n\n🔗 ${esc(url)}\n⬆️ 升级： <code>docker compose pull &amp;&amp; docker compose up -d</code>`;
    plainText = `${titleTxt}\n\n${body}\n\n🔗 ${url}\n⬆️ 升级： docker compose pull && docker compose up -d`;
  }

  const res = await send(htmlText, 'HTML');
  if (res.ok) {
    console.log('sent (HTML)');
    return;
  }
  console.error('HTML 发送失败，回退纯文本：', JSON.stringify(res));
  const p = await send(plainText.length > 4000 ? plainText.slice(0, 4000) : plainText);
  if (!p.ok) {
    console.error('纯文本也失败：', JSON.stringify(p));
    process.exit(1);
  }
  console.log('sent (plain fallback)');
})().catch((e) => {
  console.error(e);
  process.exit(1);
});