Reference Segment Optimizely Integration in Node JS Express

seg_opt.js

const express = require('express')
const app = express()
const port = 80

var request = require('request');

var username = <Segment Workspace API username>
var password = ''

var url = 'https://profiles.segment.com/v1/spaces/<workspace_id>/collections/users/profiles/user_id:'
var traits = '/traits'

//Function that will call the personas rest api
function callPersonas(completeURL) {
    return new Promise(function(resolve, reject) {

        var options = {
            url: completeURL,
            auth: {
                user: username,
                password: password
            }
        }

        request.get(options, function(err, resp, body) {
            if (err) {
                reject(err);
            } else {
                resolve(JSON.parse(body));
            }
        })
    })
}

function main() {
    app.get('/', (req, res) => {
        //For demo purposes allowing for a query string provided user_id
        var personaId = req.query['personaId'];
        console.log(req.query);

        if(personaId != null) {
            var completeURL = url + personaId + traits;

            var personasPromise = callPersonas(completeURL);
            var cookieString = '';

            //extract industry trait from the completed rest api call.
            personasPromise.then(function (result) {
                userDetails = result;
                cookieString = result['traits']['industry'];
            })

            //set the retrieved industry trait as a cookie.
            personasPromise.then(function () {
                res.cookie('industry', cookieString);
                //For demo purposes we're just using a screen 
                //scraped copy of the Segment home page
                res.sendfile('index.html');
            })
        } else{
            //For demo purposes we're just using a screen scraped copy of the Segment home page
            res.sendfile('index.html');
        }

    }, function (err) {
        console.log(err);
    })
}

app.listen(port, () => console.log(`Personas Personalized Segment app listening on port ${port}!`))
app.use(express.static('public'))
main()