#!/usr/bin/env node
/**
 * Standalone one-shot WeChat resend for a completed scheduled task page.
 * Designed to run on 103 with only mysql2 from runtime node_modules.
 */
import process from 'node:process';

const TANG = process.argv.includes('--user-id')
  ? process.argv[process.argv.indexOf('--user-id') + 1]
  : 'a70ff537-8908-486e-9b6c-042e07cc25db';
const RELATIVE = process.argv.includes('--relative-path')
  ? process.argv[process.argv.indexOf('--relative-path') + 1]
  : 'public/daily-news-0817.html';
const TASK_ID = '21799936-0532-420c-b144-65ea3846cde1';

async function getStableAccessToken(config) {
  const response = await fetch('https://api.weixin.qq.com/cgi-bin/stable_token', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      grant_type: 'client_credential',
      appid: config.appId,
      secret: config.appSecret,
    }),
  });
  const payload = await response.json();
  if (!payload?.access_token) {
    throw new Error(`stable_token failed: ${JSON.stringify(payload)}`);
  }
  return payload.access_token;
}

async function main() {
  const { default: mysql } = await import('mysql2/promise');
  const pool = mysql.createPool({ uri: process.env.DATABASE_URL, connectionLimit: 2 });
  const appId = process.env.H5_WECHAT_MP_APP_ID ?? process.env.WECHAT_MP_APP_ID ?? process.env.WX_APP_ID;
  const appSecret = process.env.H5_WECHAT_MP_APP_SECRET ?? process.env.WECHAT_MP_APP_SECRET ?? process.env.WX_APP_SECRET;
  if (!appId || !appSecret) throw new Error('缺少 WECHAT_MP_APP_ID / WECHAT_MP_APP_SECRET');

  const [ident] = await pool.query(
    'SELECT openid FROM h5_user_wechat_identities WHERE user_id = ? AND app_id = ? LIMIT 1',
    [TANG, appId],
  );
  const openid = ident?.[0]?.openid;
  if (!openid) throw new Error('用户未绑定微信');

  const [tasks] = await pool.query(
    'SELECT title, last_result_json FROM h5_scheduled_tasks WHERE id = ? LIMIT 1',
    [TASK_ID],
  );
  const task = tasks?.[0];
  const deliveryText = String(task?.last_result_json?.deliveryText ?? '').trim();
  if (!deliveryText) throw new Error('缺少 deliveryText');

  const url = `https://m.tkmind.cn/MindSpace/${TANG}/${RELATIVE.replace(/^\/+/, '')}`;
  const text = `定时任务完成：${task.title}\n\n${deliveryText.includes(url) ? deliveryText : `${deliveryText}\n\n页面链接：\n${url}`}`.trim();

  const accessToken = await getStableAccessToken({ appId, appSecret });
  const response = await fetch(`https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=${encodeURIComponent(accessToken)}`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      touser: openid,
      msgtype: 'text',
      text: { content: text.slice(0, 2048) },
    }),
  });
  const payload = await response.json();
  if (Number(payload?.errcode ?? 0) !== 0) {
    throw new Error(`微信发送失败 errcode=${payload?.errcode} errmsg=${payload?.errmsg}`);
  }

  const now = Date.now();
  const nextResult = {
    ...(task.last_result_json ?? {}),
    wechatDelivery: {
      sentAt: now,
      relativePaths: [RELATIVE],
      source: 'manual_resend',
    },
  };
  await pool.query(
    'UPDATE h5_scheduled_tasks SET last_result_json = ?, updated_at = ? WHERE id = ?',
    [JSON.stringify(nextResult), now, TASK_ID],
  );

  console.log(JSON.stringify({ ok: true, openid: `${openid.slice(0, 8)}...`, url }, null, 2));
  await pool.end();
}

main().catch((error) => {
  console.error(error);
  process.exit(1);
});