falsey.js

const request = require('request-promise');
const moment = require('moment');
moment().format();

var API_KEY = process.env.API_KEY;

var urls = { deals: 'https://api.pipedrive.com/v1/deals?start=0&api_token=' + API_KEY,
             activities: 'https://api.pipedrive.com/v1/activities?start=0&api_token=' + API_KEY };

function getIt (url) {
    return request(url).then(function (body) {
        return JSON.parse(body).data;
    }); 
} 

Promise.all([getIt(urls.deals), getIt(urls.activities)]).then(function(results) {

    var deals = results[0];
    var activities = results[1];

    console.log("Activities is an array... so we'll loop through it."); 

    var apps = {};                                                                                                                                  
    var haves = {}; 

    deals.forEach(function(deal){
        if (deal.stage_id === 2) {
            apps[deal.id] = deal;
        }   
    }); 

    activities.forEach(function(activity){
        if (activity.subject === '4506-T') {
            haves[activity.deal_id] = activity; 
        }   
    }); 
        
    console.log(Object.keys(apps));
    console.log(Object.keys(haves));

    var diffs = Object.keys(apps).filter(function(app) {
        return (Object.keys(haves).indexOf(app) === -1); 
    }); 

    var haveNots = diffs.map(function(item){
        return Number(item); 
    }); 

    console.log(haveNots);

    haveNots.forEach(function(deal){
        request.post('https://api.pipedrive.com/v1/activities?api_token=' + API_KEY, {
            form: {'subject': '4506-T',
                   'deal_id': deal,
                     'note' : apps[deal].person_id.name + ' is a pretty cool dude.',
                 'due_date' : moment(apps[deal].add_time).add(3, 'days').format('YYYY-MM-DD')}});

        console.log(apps[deal].person_id.name + ' was created on ' + moment(apps[deal].add_time).format('YYYY-MM-DD') + '. So, this task is due on '
    }); 

}).then(function(){
// do more stuff here.
});