to set lithium's negative viewcount to 0

nbb-fix-topic-viewcount.js

var path  = require('path');
var nconf = require('nconf');
var async = require('async');

nconf.file({ file: path.join(__dirname, './config.json') });

var dbType = nconf.get('database');
var productionDbConfig = nconf.get(dbType);

nconf.set(dbType, productionDbConfig);
var db = require('./src/database');

db.init(function() {
	console.log('db.ready');
	var batch = require('./src/batch');

	batch.processSortedSet('topics:tid', function (ids, next) {
		async.each(ids, function (id, next) {
			console.log('processing tid ' + id);
			async.waterfall([
				function (next) {
					db.getObjectField('topic:' + id, 'viewcount', next);
				},
				function (viewcount, next) {
					viewcount = parseInt(viewcount, 10);
					if (viewcount < 0) {
						db.setObjectField('topic:' + id, 'viewcount', 0, next);
					} else {
						next();
					}
				}
			], next);
		}, next);
	}, {}, function () {
		console.log('ALL DONE!');
	});

});