Example of handling delivery events

logging_example.js

const express = require('express');
const bodyParser = require('body-parser');
const Smooch = require('smooch-core');

const APP_ID = '';
const KEY_ID = '';
const SECRET = '';

const outboundMessageLogs = [];

const smooch = new Smooch({
  scope: 'account',
  keyId: KEY_ID,
  secret: SECRET
});

const app = express();

app.listen(8000);

app.use(bodyParser.json());
app.get('/', getIndexHandler);
app.post('/events', eventHandler);


function getIndexHandler(req, res) {
  res.send(`
    <pre>${JSON.stringify(outboundMessageLogs, null, 4)}</pre>

    <script>
      !function(e,n,t,r){
          function o(){try{var e;if((e="string"==typeof this.response?JSON.parse(this.response):this.response).url){
          var t=n.getElementsByTagName("script")[0],r=n.createElement("script");r.async=!0,r.src=e.url,t.parentNode.insertBefore(r,t)}}catch(e){}}
          var s,p,a,i=[],c=[];e[t]={init:function(){s=arguments;var e={then:function(n){return c.push({type:"t",next:n}),e},catch:function(n){
          return c.push({type:"c",next:n}),e}};return e},on:function(){i.push(arguments)},render:function(){p=arguments},destroy:function(){a=arguments}},
          e.__onWebMessengerHostReady__=function(n){if(delete e.__onWebMessengerHostReady__,e[t]=n,s)for(var r=n.init.apply(n,s),o=0;o<c.length;o++){
          var u=c[o];r="t"===u.type?r.then(u.next):r.catch(u.next)}p&&n.render.apply(n,p),a&&n.destroy.apply(n,a);for(o=0;o<i.length;o++)n.on.apply(n,i[o])};
          var u=new XMLHttpRequest;u.addEventListener("load",o),u.open("GET","https://"+r+".webloader.smooch.io/",!0),u.responseType="json",u.send()
      }(window,document,"Smooch", "${APP_ID}")
    </script>

    <script>
      Smooch.init({ appId: "${APP_ID}" });
    </script>
  `);
}

async function eventHandler(req, res) {
  try {
    if (req.body.trigger === 'message:delivery:channel') {
      const index = outboundMessageLogs.findIndex(entry => entry.messageId === req.body.message._id);

      outboundMessageLogs[index] = {
        messageId: req.body.message._id,
        status: 'channel success'
      }
    }

    if (req.body.trigger === 'message:appUser') {
      for (const message of req.body.messages) {
        if (message.text === 'ping') {
          const data = await smooch.appUsers.sendMessage({
              appId: req.body.app._id,
              userId: req.body.appUser._id,
              message: {
                  text: 'pong',
                  role: 'appMaker',
                  type: 'text'
              }
          });          

          outboundMessageLogs.push({
            messageId: data.message._id,
            status: 'na'
          });
        }
      }
    }

    res.end();
  } catch (err) {
    console.log(error);
  }
}

"OK"