node-test.js

// runs on setup
let request = require('request');const config = require('./test-grant-config.js');
let PubNub = require('pubnub');

let channel = 'chan' + new Date().getTime();
let myUUID = 'uuid' + new Date().getTime();;
let myAuthKey = "auth" + new Date().getTime();;

request.post({
    url: 'https://pubsub.pubnub.com/v1/blocks/sub-key/sub-c-67db0e7a-50be-11e7-bf50-02ee2ddab7fe/auther',
    json: {
        authKey: myAuthKey,
        channel: channel,
        uuid: myUUID
    }
}, (err, httpResponse, body) => {

    console.log('pfunct response', body)

    let pn = new PubNub({
        authKey: myAuthKey,
        publishKey: 'pub-c-c6303bb2-8bf8-4417-aac7-e83b52237ea6',
        subscribeKey: 'sub-c-67db0e7a-50be-11e7-bf50-02ee2ddab7fe'
    });

    pn.addListener({
        message: (message) => {
            console.log('incoming', message)
        }
    });

    pn.subscribe({
        channels: [channel]
    });

    console.log('publishing')
    pn.publish({
        channel: channel,
        message: 'test'
    }, function(a,b,c){
        console.log(a,b,c)
    })

});

pfunct-pam.js

export default (request, response) => {
    const pubnub = require('pubnub');

    let bodyString = request.body;

    response.status = 200;

    return request.json().then((body) => {
        
        body.valid = false;
        if(body.uuid == "ian" && body.authKey == 12345) {
            body.valid = true;
        }

        let chan = body.channel;
        let myAuthKey = body.authKey;
        let myUUID = body.uuid;
        
        console.log(chan, myAuthKey, myUUID)
        
        return pubnub.grant({
            channels: [chan],
            read: true, // false to disallow
            write: true, // false to disallow,
            authKeys: [myAuthKey],
            ttl: 0
        }).then((res) => { 
            
            return response.send(body);
            
        }).catch((error) => { 
            // handle error 
            console.log('couldnt grant')
            console.log(error)
            return response.send(body);
        });
        
    }).catch((err) => {
        // console.log(err)
        return response.send("Malformed JSON body.");
    });
};