Crude Express microservice for a Facebook connector

express-facebook-connector.js

var Express = require('express');
var BodyParser = require('body-parser');
var CredentialsService = require('infusionsoft-credentials');

var app = Express();

app.use(BodyParser.json());

app.get('/activities', function(req, res) {
    var accessToken = CredentialsService.resolveCredentials(req.params.credentialsId).accessToken;
    var since = req.params.since;
    var until = req.params.until;
    var feedsToFetch = ['feed', 'links', 'photos', 'posts', 'events', 'milestones'];
    var feedsFetched = 0;
    var channelEvents = [];
        
    // Iterate through all the Facebook feeds we want to fetch
    for (var i = 0; i < feedsToFetch.length; i++) {
        var url = 'https://graph.facebook.com/' + pageId + '/' + feedsToFetch[i] + '?since=' + since + '&until=' + until + '&accessToken=' + accessToken;
        
        // Fetch and process data for this feed
        getFacebookData(url, function(rawData) {
            rawChannelEvents.push(transformRawFacebookDataToChannelEvents(rawData));
            
            feedsFetched++;
            
            // If we're done with all the feeds, send the HTTP response
            if (feedsFetched == feedsToFetch.length) {
                res.send(channelEvents); // done!
            }
        });
    }
});

app.listen(8080);

function getFacebookData(url, cb) {
    // TODO - get data from Facebook and pass it to cb()
}

function transformRawFacebookDataToChannelEvents(rawData) {
    // TODO
}