all files / src/controllers/ popular.js

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'use strict';
 
var nconf = require('nconf');
var topics = require('../topics');
var meta = require('../meta');
var helpers = require('./helpers');
 
var popularController = {};
 
var anonCache = {};
var lastUpdateTime = 0;
 
var terms = {
	daily: 'day',
	weekly: 'week',
	monthly: 'month'
};
 
popularController.get = function(req, res, next) {
 
	var term = terms[req.params.term];
 
	if (!term && req.params.term) {
		return next();
	}
	term = term || 'alltime';
 
	var termToBreadcrumb = {
		day: '[[recent:day]]',
		week: '[[recent:week]]',
		month: '[[recent:month]]',
		alltime: '[[global:header.popular]]'
	};
 
	if (!req.uid) {
		if (anonCache[term] && (Date.now() - lastUpdateTime) < 60 * 60 * 1000) {
			return res.render('popular', anonCache[term]);
		}
	}
 
	topics.getPopular(term, req.uid, meta.config.topicsPerList, function(err, topics) {
		if (err) {
			return next(err);
		}
 
		var data = {
			topics: topics,
			'feeds:disableRSS': parseInt(meta.config['feeds:disableRSS'], 10) === 1,
			rssFeedUrl: nconf.get('relative_path') + '/popular/' + (req.params.term || 'daily') + '.rss',
			title: '[[pages:popular-' + term + ']]',
			term: term
		};
 
		if (req.path.startsWith('/api/popular') || req.path.startsWith('/popular')) {
			var breadcrumbs = [{text: termToBreadcrumb[term]}];
 
			if (req.params.term) {
				breadcrumbs.unshift({text: '[[global:header.popular]]', url: '/popular'});
			}
 
			data.breadcrumbs = helpers.buildBreadcrumbs(breadcrumbs);
		}
 
		if (!req.uid) {
			anonCache[term] = data;
			lastUpdateTime = Date.now();
		}
 
		res.render('popular', data);
	});
};
 
module.exports = popularController;