feed.js

module.exports = function() {

 var harp = require("./harp.json")["globals"]
 , RSS = require("rss")
 , moment = require("moment")
 , fs = require("fs")
 , rootUrl = harp.root_url[process.env.NODE_ENV]
 , imageRootUrl = rootUrl + "assets/images/"
 , outputFeed = "public/rss.xml"
 , devgroups = []
 ;

 var feed = new RSS({
 title: harp.title,
 description: harp.description,
 feed_url: rootUrl + "rss.xml",
 site_url: rootUrl,
 image_url: imageRootUrl + "devgroups-128.png",
 managingEditor: harp.author,
 pubDate: moment().format("LLLL"),
 ttl: 60
 });
 
 harp.platforms.forEach(function(platformName) {
 var platform = require("./public/"+ platformName +"/_data.json")["index"];

 platform.devgroups.forEach(function(devgroup) {
 var devgroupId = devgroup.title.replace(/[^\w\s]/g, "").replace(/\s/g, "-").toLowerCase();
 var devgroupLink = rootUrl + platformName + "/#" + devgroupId;
 var devgroupPublishedAt = moment(devgroup.published_at || moment().format("YYYYMMDD"), "YYYYMMDD");
 var devgroupImage = imageRootUrl + (devgroup.image || platform.image);

 devgroups.push({
 title: "DevGroup: " + devgroup.title,
 description: devgroup.description,
 url: devgroupLink,
 author: harp.author,
 date: devgroupPublishedAt.format("ll"),
 enclosure: {
 url: devgroupImage
 }
 });
 });
 });

 var sortedDevGroups = devgroups.sort(function(a, b) {
 var a = moment(a.date, "ll").toDate().getTime();
 var b = moment(b.date, "ll").toDate().getTime();
 if (a < b) return 1;
 if (a > b) return -1;
 return 0;
 });

 sortedDevGroups.forEach(function(devgroup) { feed.item(devgroup); });

 fs.writeFileSync(outputFeed, feed.xml());
 console.log("Generated RSS:", outputFeed);
};