腾讯云+wechaty实现微信群文本消息自动转发(跨群聊天)

服务器配置：轻量应用服务器，地域：硅谷，镜像：Node.js (CentOS 7.6 64位操作系统)，最低的24元/月套餐

1. 在控制台上重置root密码，用root密码登录，创建普通用户，安装git，rz/sz，chrome。
https://intoli.com/blog/installing-google-chrome-on-centos/ 提供了一行命令安装chrome的方法

curl https://intoli.com/install-google-chrome.sh | bash

2. 按照https://github.com/wechaty/wechaty-getting-started介绍的步骤安装依赖

git clone https://github.com/wechaty/wechaty-getting-started.git
cd wechaty-getting-started
npm install

3. 将examples/ding-dong-bot.ts改为以下代码

/**
 * Wechaty - WeChat Bot SDK for Personal Account, Powered by TypeScript, Docker, and 💖
 *  - https://github.com/chatie/wechaty
 */
import {
  Contact,
  ScanStatus,
  Wechaty,
  log,
}               from 'wechaty'

import { generate } from 'qrcode-terminal'

require('dotenv').config()

// You can safely ignore / comment out the next two lines because it is using for CodeSandbox
require('./.code-sandbox.js')

const welcome = `[Powered by Wechaty]
发送2020，提示机器人指令：
++2020 本群消息推给对方
==2020 本群消息不推给对方
2020++ 对方消息推到本群
2020== 对方消息不推到本群
FFFF开头 消息强制推给对方
`
const help_cmd = '2020'
const push_msg_cmd = '++2020'
const push_nil_cmd = '==2020'
const pull_msg_cmd = '2020++'
const pull_nil_cmd = '2020=='
// [0] is not used
const topic_ls = ['', 'XXXX一群', 'XXXX二群']
const abbr_ls = ['', '一群.', '二群.']
const push_to = [false, false, false]

function onScan (qrcode: string, status: ScanStatus) {
  if (status === ScanStatus.Waiting || status === ScanStatus.Timeout) {
    generate(qrcode, { small: true })  // show qrcode on console

    const qrcodeImageUrl = [
      'https://wechaty.js.org/qrcode/',
      encodeURIComponent(qrcode),
    ].join('')

    log.info('StarterBot', 'onScan: %s(%s) - %s', ScanStatus[status], status, qrcodeImageUrl)
  } else {
    log.info('StarterBot', 'onScan: %s(%s)', ScanStatus[status], status)
  }
}

function onLogin (user: Contact) {
  log.info('StarterBot', '%s login', user)
}

function onLogout (user: Contact) {
  log.info('StarterBot', '%s logout', user)
}

const bot = new Wechaty({
  name: 'ding-dong-bot',
})

bot.on('scan',    onScan)
bot.on('login',   onLogin)
bot.on('logout',  onLogout)
bot.on('message', async msg => {
  log.info('StarterBot', msg.toString())
  if (msg.self() ||
    (msg.type() !== bot.Message.Type.Text &&
     msg.type() !== bot.Message.Type.Url)) {
    return
  }

  const room = msg.room()
  if (!room) {
    return;
  }

  const topic = await room.topic()
  const from_idx = topic_ls.indexOf(topic)
  if (from_idx > -1) {
    const to_idx = from_idx == 1 ? 2 : 1
    const orig_push_to = push_to[to_idx]

    const txt = msg.text()
    if (txt == push_msg_cmd || txt == push_nil_cmd) {
      push_to[to_idx] = (txt == push_msg_cmd)
    } else if (txt == pull_msg_cmd || txt == pull_nil_cmd) {
      push_to[from_idx] = (txt == pull_msg_cmd)
    } else if (txt == help_cmd) {
      await room.say(welcome)
      return
    }

    if (push_to[to_idx] || orig_push_to || txt.substr(0,4) == 'FFFF') {
      const contact = msg.talker()
      const alias = await room.alias(contact) // TODO: cache
      const s = '[' + abbr_ls[from_idx] + (alias ? alias : contact.name()) + ']\n' + txt;
      const fwd_room = await bot.Room.find({topic: topic_ls[to_idx]}) // TODO: cache
      if (!fwd_room) {
        return
      }
      await fwd_room.say(s)
    }
  }
})

bot.start()
  .then(() => log.info('StarterBot', 'Starter Bot Started.'))
  .catch(e => log.error('StarterBot', e))

 

4. 执行以下命令，扫码登录，退出shell，done。

注意：2017年之前注册的微信账号才能登录网页版；有的ssh客户端不能正常显示二维码，putty可以。

nohup npm start >stdout.log 2>stderr.log &
tailf stdout.log

 

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