server.js

/*
	Drishti Proxy server to proxy the test url and inject drihti file and other dependencies.
*/
const
	express = require('express'),
	request = require('request'),
	serveStatic = require('serve-static'),
	app = express(),
	is = require('html-inject-script'),
	config = require('./config.json'),
	opn = require('opn'),
	bodyParser = require('body-parser'),
	colors = require('colors'),
	clitable = require('cli-table'),
	url = require("url");

/*
	Parse the url
*/
var urlParser = url.parse(config.url);
var slashes = urlParser.slashes ? '//' : '';
var origin = urlParser.protocol + slashes + urlParser.host;

var port = process.env.PORT || config.port || 3005;

// Array to hold list of javascript to inject into proxy
var jsArray = ['/js/lib/drishti.min.js','/helpers/specLoader.js'];

// if cli report is enabled push cliReporter.js to array of js injector
if (config.report.indexOf('cli') > -1) {
	jsArray.push('/helpers/cliReporter.js');
}

// serve express static folder. enable express to parse body as url encoded and json.
app.use(serveStatic(__dirname))
	.use(bodyParser.urlencoded({ extended: true }))
	.use(bodyParser.json());

/*
	Express proxy get requests
*/
app.get('*', function(req, res) {
	var url = origin + req.originalUrl;
	res.setHeader('Access-Control-Allow-Origin', '*');

	if(req.headers['accept'] && req.headers['accept'].indexOf('text/html') > -1) {
		request(url).pipe(is(jsArray)).pipe(res);
	} else {
		req.pipe(request(url)).pipe(res);
	}

});

/*
	If cli reporter is enabled, create router to listen to results from cliReporter.js
*/
if (config.report.indexOf('cli') > -1) {
	var drishtiCliResultHeader = false;

	app.post('/drishtiResult/', function(req, res) {
		var result = req.body;
		cliReport(result);
	});
}

/*
	express proxy post requests
*/
app.post('*', function(req, res) {
	var url = origin + req.originalUrl;

	res.setHeader('Access-Control-Allow-Origin', '*');

	if ("content-type" in req.headers && req.headers['content-type'].indexOf('multipart/form-data') > -1) {
		request.post(url).formData(req.body).pipe(is(jsArray)).pipe(res);
	} else {
		request.post(url).form(req.body).pipe(is(jsArray)).pipe(res);
	}

});

// start express server by listening to the port
var server = app.listen(port);
console.log('[Drishti]'.blue + ' Local URL: http://localhost:' + port);

// default to chrome browser on mac, on windows change to google.
var browser = config.browser || 'google chrome';

// open the browser to start testing using drishti
if( typeof browser === 'string' ) {
		browser = [browser];
}
browser.forEach(function (browser) {
	opn('http://localhost:'+ port, {app:browser});
});

// cli reporter function
function cliReport(result) {
	if (!drishtiCliResultHeader) {
		console.log('Drishti Test Results'.cyan.bold.underline);
		drishtiCliResultHeader = true;
	}

	var table = new clitable({
		head: ['CssSelector', 'ElementName In SpecFile', 'Test Condition', 'Actual', 'Expected'],
		colWidths: [20, 20, 20, 20, 20]
	});
	//table.push(result.errorTable); // to do
	//console.log(table.toString()); // to do
	//console.log('Url: "%s", '.white + 'Spec: "%s", '.magenta +'Pass: %s, '.green + 'Fail: %s, '.red +'Not Executed: %s '.yellow +'Browser: %s, Browser-Width: %s', origin + result.url, result.spec, result.pass, result.fail, result.notExecuted, result.browser, result.viewPort);
	console.log('Url: "%s", '.white + 'Spec: "%s", '.magenta +'Browser: %s, Browser-Width: %s', origin + result.url, result.spec, result.browser, result.viewPort);
	console.log('Pass: %s, '.green + ' Fail: %s, '.red +' Skipped: %s\n'.yellow, result.pass, result.fail, result.notExecuted);
}