server.js

var http = require('http');
var url = require('url');
var util = require('util');
var loginController = require('./loginController');
var configurationController = require('./configurationController');

var resourceName = "configuration";
var server = new http.Server();
server.listen(3000);
console.log('localhost: Server running on port 3000');

server.on('request', function (request, response) {
    var cookie = request.headers.cookie;
    var params = url.parse(request.url).pathname.split('/');

    var queries = getQueryParams(request);
    var requestBody = '';
    request.on('data', function (chunk) {
        requestBody += chunk.toString();
    });

    request.on('end', function () {
        var result;
        var resource = params[1];
        if ('login' === resource) {
            var actionParam = params[2];
            result = loginController.login(request.method, actionParam, cookie, requestBody);
        } else if (resource === resourceName) {
            if (cookie && loginController.cookies[cookie]) {
                result = configurationController.process(request.method, resource, params[2], params[3], requestBody, queries);
            } else {
                result = {
                    success: false,
                    statusCode: 403,
                    header: {"Content-Type": "application/json"},
                    message: 'Unauthorized user.'
                };
            }
        } else {
            result = {
                success: false,
                statusCode: 404,
                header: {"Content-Type": "application/json"},
                message: 'Unindentified resource.'
            };
        }
        response.writeHead(result.statusCode, result.header);
        response.end(result.message);
    })
});

function getQueryParams(request) {
    var search = url.parse(request.url).search;
    var queries = {};

    if(!util.isNullOrUndefined(search)) {
        var sortingAndPagingParams = search.split('&');
        if(sortingAndPagingParams) {
            for (var i in sortingAndPagingParams) {
                var keyValue = sortingAndPagingParams[i].split('=');
                var action = keyValue[0].replace('?', '').trim();
                queries[action] = keyValue[1].trim();
            }
        }
    }

    return queries;
}