Chrome scrapper

index.js

var express = require('express');
var cp = require('child_process');
var Chrome = require('./lib/chrome');
var Remote = require('./lib/remote');

var app = express.createServer();
app.use(express.bodyParser());
app.use(app.router);
app.use(express.static(__dirname + '/public'));

var port = 3000;
app.listen(port);
console.log('Server is listening on port ' + port);


app.post('/api/v1',function(req,res){
	var url = req.param('url');	//	'http://www.patrickhyundai.com/browse-new-hyundais.aspx'
	var selector = req.param('selector');
	var turn = req.param('turn');
	var pages =req.param('pages');
	var port = 9222;

	var chrome = new Chrome(port,url);
	chrome.init(function(err){
		if(err==null){
			var remote = new Remote(port,url,selector,turn,pages);
			remote.init(function(err,data){
				chrome.release();
				remote.release();
				if(err!=null){	//everything is fine
					res.contentType('application/json');
					res.write( JSON.stringify({
						error: err,
						timedate:new Date()
					}) );
					res.end('\n');
				}else{	//got some error
					res.contentType('application/json');
					res.write( JSON.stringify({
						data: data,
						timedate:new Date()
					}) );
					res.end('\n');
				}
			});
		}else{
			res.contentType('application/json');
			res.write( JSON.stringify({
				error: err,
				timedate:new Date()
			}) );
			res.end('\n');
		}
	});
});