koa2-wechat2

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Summary

Koa2Wechat2 use koa2 middleware async function for wechat

Overview

koa2Wechat2 provide two method getWechat() for wechatApi , and weReply() for wechat auto Reply logic

Installation

$ npm install koa2-wechat2 --save

Basic use

if we only want to get wechat auto reply, then

import Koa from 'koa'
import {weReply} from 'koa2-wechat2'

const app = new Koa()
//opts see below
app.use(weReply(opts))

API

the following methods both have a opts parameter

let opts {
  appID:'xx',
  appSecret:'xx',
  token:'eid'
}

• weReply(opts, handler) : if handler undefined then use default reply handler, you can provide your own reply logic, example below, more details reply.js:

let handler = async (ctx, next) => {
  //ctx.wexin is wechat server post content to your node server
  let message = ctx.weixin
  let reply
   if (message.MsgType === 'event') {
    if (message.Event === 'subscribe') {
      if (message.EventKey) {
        console.log(`qrcode: ${message.EventKey} ${message.ticket}` )
      }
      reply ='haha , you subscribed\n' 
    } else if (message.Event === 'unsubscribe') {
      console.log('unsubscribe')
      reply = 'unsubscribe'
    }
  } else if (message.MsgType === 'voice') {
      let voiceText = message.Recognition
      reply = `you says: ${voiceText}`
  } else if (message.MsgType === 'text') {
      // this handle your input text logic
    } else {
      reply = 'empty msg'
    }

    ctx.body = reply
    await next()
}

• getWechat(opts) : returned wechatApi with promisify method, ex:

import {getWechat} from 'koa2-wechat2'

//opts above: appId, Secret, token
let wechatApi = getWechat(opts)

Tests

npm test

License

MIT