var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs"),
    port = process.argv[2] || 8888;
  
      
http.createServer(function(request, response) {
 
    var Response = {
        "200":function(file, filename){
            var extname = path.extname(filename);
            var header = {
                "Access-Control-Allow-Origin":"*",
                "Pragma": "no-cache",
                "Cache-Control" : "no-cache"      
            }
 
            response.writeHead(200, header);
            response.write(file, "binary");
            response.end();
        },
        "404":function(){
            response.writeHead(404, {"Content-Type": "text/plain"});
            response.write("404 Not Found\n");
            response.end();
         
        },
        "500":function(err){
            response.writeHead(500, {"Content-Type": "text/plain"});
            response.write(err + "\n");
            response.end();
         
        }
    }
 
   
    var uri = url.parse(request.url).pathname
    , filename = path.join(process.cwd(), uri);
 
    fs.exists(filename, function(exists){
        console.log(filename+" "+exists);
        if (!exists) { Response["404"](); return ; }
        if (fs.statSync(filename).isDirectory()) { filename += '/index.html'; }
 
        fs.readFile(filename, "binary", function(err, file){
        if (err) { Response["500"](err); return ; }
            Response["200"](file, filename);   
        }); 
 
    });
  
    
}).listen(parseInt(port, 10));
   
console.log("Server running at http://localhost:" + port );