Javascript Problem

example.json

{"message":[{"user":"Chat","text":"Loading emotes and badges.."},{"user":"Chat","text":"Connecting to Night's chat socket server.."},{"user":"Chat","text":"Connected."}]}

server.js

http = require('http');
fs = require('fs');
beautify = require('js-beautify').js_beautify;

fs.writeFile("chat.txt","",function(err) {
	if(err){
		return console.log(err.toString('utf8'));
	}
});



server = http.createServer( function(req, res) {

    //console.dir(req.param);
    if (req.method == 'POST') {
        //console.log("POST");
        var body = "";
        req.on('data', function (data) {
        	if ( typeof old !== 'undefined' && old ){
        		if (data == old){
        			print = 0;
        		}else{
        			print = 1;
        			//console.log(data.toString('utf8'));
        			body += data;
        			old = body;
        		}
			}else{
				//console.log(data.toString('utf8'));
				body += data;
				old = body;
        		print = 1;
			}
        });
        req.on('end', function () {
        	if (print == 1){
        		//console.log("file");
        		var fs = require('fs');
        		var jsonParsed = JSON.parse(body);
        		var jsonParsed2 = JSON.parse(jsonParsed);
                fs.writeFile("chat.txt","",function(err) {
                    if(err){
                        return console.log(err.toString('utf8'));
                    }
                });
        		for (var i=0; i<jsonParsed2['message'].length; i++){
    				//console.log(jsonParsed2['message'][i]);
                    //var writeToFile = beautify(jsonParsed2['message'][i]['user'] + ": " + jsonParsed2['message'][i]['text'], { "wrap_line_length": 20, "indent_size": 0, "end_with_newline": false, "indent_char": "" })
					var writeToFile = jsonParsed2['message'][i]['user'] + ": " + jsonParsed2['message'][i]['text'].replace(/.{33}/g, "$&" + "\n");
                    fs.appendFile("chat.txt", writeToFile + "\n", function(err) {
    					if(err) {
        					return console.log(err.toString('utf8'));
    					}
					});
				}
        		
            	//console.log("Body: " + jsonParsed2);
        	}else{
                //console.log("nichts");
            }
        });
        res.writeHead(200, {'Content-Type': 'text/html', 'Access-Control-Allow-Origin': '*'});
        res.end('post received');
    }


});

port = 3000;
host = '127.0.0.1';
server.listen(port, host);
console.log('Listening at http://' + host + ':' + port);