server.js

var http = require('http'), 
    fs = require('fs'), 
    url = require('url'),
    port = 8080;

/* Global variables */
var listingData, server;

var requestHandler = function(request, response) {
	var parsedUrl = url.parse(request.url);
	var path = parsedUrl.pathname;
	if(path =='/listings'){
		response.writeHead(200,{'Content-Type': 'application/json'});	
		response.end(JSON.stringify(listingData));	
	}else if(path == '/'){
		response.writeHead(200);
		response.end();
	}else{
		response.writeHead(404);
		response.write('Bad gateway error');
		response.end();
	}
  /*
    Your request handler should send listingData in the JSON format as a response if a GET request 
    is sent to the '/listings' path. Otherwise, it should send a 404 error. 

    HINT: Explore the request object and its properties 
    HINT: Explore the response object and its properties
    https://code.tutsplus.com/tutorials/http-the-protocol-every-web-developer-must-know-part-1--net-31177
    http://stackoverflow.com/questions/17251553/nodejs-request-object-documentation
    
    HINT: Explore how callback's work 
    http://www.theprojectspot.com/tutorial-post/nodejs-for-beginners-callbacks/4
    
    HINT: Explore the list of MIME Types
    https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Complete_list_of_MIME_types
   */
};

fs.readFile('listings.json', 'utf8', function(err, data) {
  /*
    This callback function should save the data in the listingData variable, 
    then start the server. 

    HINT: Check out this resource on fs.readFile
    //https://nodejs.org/api/fs.html#fs_fs_readfile_path_options_callback

    HINT: Read up on JSON parsing Node.js
   */
	listingData = JSON.parse(data);
    //Check for errors      listings = JSON.parse(data);
  


   //Save the sate in the listingData variable already defined
   //Create the server 
   //Start the server
 	server = http.createServer(requestHandler);
	server.listen(port,function(){
	console.log('Listening on http://127.0.0.1:8080');
});
});