Wechaty Plugin

Middleware is computer software that connects software components or applications. The software consists of a set of services that allows multiple processes running on one or more machines to interact.
— Wikipedia

See also: What is middleware exactly?

A Purpose from @Gcaufy

Yesterday, in our contributor group, @Gcaufy suggested that it would be great to add supporting of middleware to the Wechaty ecosystem, like the following usage:

有没有人把 踢人那个做成通用组件。。。那个很实用呀

wechaty.use(KickoutPlugin({
  room: 'RoomName',
}));

然后这个房间就有踢人功能了。

I feel that it is a Brilliant idea!

So how about we design a middleware system like this:

Wechaty.use(middleware: WechatyMiddleware)

type WechatyMiddleware = (this: Wechaty) => void

class Wechaty {
  public use (middleware: WechatyMiddleWare) {
    middleware.apply(this)
  }
}

const kickoutPlugin = (options = {}) => {
  const roomTopic = options.roomTopic
  return function (this: Wechaty) {
    this.on('message'), message => {
      if (message.room()) && message.room().topic() === roomTopic) {
        if (message.mentionSelf()) {
          // check vote
          message.room().del(...)
        }
      }
    })
  }
}

const wechaty = new Wechaty()
wechaty.use(kickOffPlugin({ roomTopic: 'Test Room' }))

Any comments about this design will be welcome.

P.S. The Kickout Feature was originally introduced from the PR add vote manager to manage vote message in room #4 authored by @windmemory.

Links

• A short guide to Connect Middleware
• Express Documentation for Using middleware

History

• Wechaty Plugin Support with Kickout Example #1939
• Wechaty插件系统发布，让你的机器人快速接入复杂管理和智能对话能力, @rickyyin98, Jul 22, 2020