wechat hook for think.js 2.0

hook.js

/**
 * this file will be loaded before server started
 * you can register app hook
 */
const WEIXIN_APPID = appid;
const WEIXIN_APPSECRET = appsecret;
const WEIXIN_TOKEN = token;
const WEIXIN_AESKEY = aeskey;

think.middleware('parse_wechat', http => {
  var connect = require('http-connect');
  var app = new connect(http);
  var wechat = require('wechat');

  http.req.rawBody = http.payload;

  return new Promise(function(resolve, reject){
    function forward(path, message){
        http._post = message;
        http.pathname += '/' + path;
        resolve();
    }

    app.use(wechat({ token: WEIXIN_TOKEN, appid: WEIXIN_APPID, encodingAESKey: WEIXIN_AESKEY })
      .text(function (message, req, res, next) {
        // message为文本内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125035',
        // MsgType: 'text',
        // Content: 'http',
        // MsgId: '5837397576500011341' }
        forward('text', message);
      }).image(function (message, req, res, next) {
        // message为图片内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359124971',
        // MsgType: 'image',
        // PicUrl: 'http://mmsns.qpic.cn/mmsns/bfc815ygvIWcaaZlEXJV7NzhmA3Y2fc4eBOxLjpPI60Q1Q6ibYicwg/0',
        // MediaId: 'media_id',
        // MsgId: '5837397301622104395' }
        forward('image', message);
      }).voice(function (message, req, res, next) {
        // message为音频内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'voice',
        // MediaId: 'OMYnpghh8fRfzHL8obuboDN9rmLig4s0xdpoNT6a5BoFZWufbE6srbCKc_bxduzS',
        // Format: 'amr',
        // MsgId: '5837397520665436492' }
        forward('voice', message);
      }).video(function (message, req, res, next) {
        // message为视频内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'video',
        // MediaId: 'OMYnpghh8fRfzHL8obuboDN9rmLig4s0xdpoNT6a5BoFZWufbE6srbCKc_bxduzS',
        // ThumbMediaId: 'media_id',
        // MsgId: '5837397520665436492' }
        forward('video', message);
      }).shortvideo(function (message, req, res, next) {
        // message为短视频内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'shortvideo',
        // MediaId: 'OMYnpghh8fRfzHL8obuboDN9rmLig4s0xdpoNT6a5BoFZWufbE6srbCKc_bxduzS',
        // ThumbMediaId: 'media_id',
        // MsgId: '5837397520665436492' }
        forward('shortvideo', message);
      }).location(function (message, req, res, next) {
        // message为位置内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125311',
        // MsgType: 'location',
        // Location_X: '30.283950',
        // Location_Y: '120.063139',
        // Scale: '15',
        // Label: {},
        // MsgId: '5837398761910985062' }
        forward('location', message);
      }).link(function (message, req, res, next) {
        // message为链接内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'link',
        // Title: '公众平台官网链接',
        // Description: '公众平台官网链接',
        // Url: 'http://1024.com/',
        // MsgId: '5837397520665436492' }
        forward('link', message);
      }).event(function (message, req, res, next) {
        // message为事件内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'event',
        // Event: 'LOCATION',
        // Latitude: '23.137466',
        // Longitude: '113.352425',
        // Precision: '119.385040',
        // MsgId: '5837397520665436492' }
        forward('event', message);
      }).device_text(function (message, req, res, next) {
        // message为设备文本消息内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'device_text',
        // DeviceType: 'gh_d3e07d51b513'
        // DeviceID: 'dev1234abcd',
        // Content: 'd2hvc3lvdXJkYWRkeQ==',
        // SessionID: '9394',
        // MsgId: '5837397520665436492',
        // OpenID: 'oPKu7jgOibOA-De4u8J2RuNKpZRw' }
        forward('deviceText', message);
      }).device_event(function (message, req, res, next) {
        // message为设备事件内容
        // { ToUserName: 'gh_d3e07d51b513',
        // FromUserName: 'oPKu7jgOibOA-De4u8J2RuNKpZRw',
        // CreateTime: '1359125022',
        // MsgType: 'device_event',
        // Event: 'bind'
        // DeviceType: 'gh_d3e07d51b513'
        // DeviceID: 'dev1234abcd',
        // OpType : 0, //Event为subscribe_status/unsubscribe_status时存在
        // Content: 'd2hvc3lvdXJkYWRkeQ==', //Event不为subscribe_status/unsubscribe_status时存在
        // SessionID: '9394',
        // MsgId: '5837397520665436492',
        // OpenID: 'oPKu7jgOibOA-De4u8J2RuNKpZRw' }
        forward('deviceEvent', message);
      })
      .middlewarify());     
  });
});