srv2

var http = require('http');
var fs = require('fs');
var path = require('path');
var async = require('async');
var archiver = require('archiver');

const FileDirectory = "./";

var port = process.argv[2] || 8888;
var dirs = {};
dirs = [".//png//", ".//jpg//", ".//html//", ".//js//", ".//gif//"];
exts = [".png", ".jpg", ".html", ".js", ".gif"];

var getFilesFromDir = function(myDir, zipArchiver, myCallback) {
    var results = [];
    fs.readdir(myDir, function processContent(error, files) { //czytacz asynchroniczny
        if (error) {
            console.log(error);
            return myCallback(error);
        }
        else {
            var filesLeft = files.length;
            console.log('Found files: ' + filesLeft + ' ' + myDir);
            if(!filesLeft) { //directory is empty
                console.log('Dir is empty ' + myDir);
                return myCallback(null, results);
            }
            for(file in files)
            {
                file = path.join(myDir,files[file]);
                if(fs.statSync(file).isDirectory())
                {
                    console.log('Entering directory ' + file);
                    getFilesFromDir(file, zipArchiver, function subdirectoryDone(error, internalResult) {
                        console.log("callback hell" + file + ' files left: ' + (filesLeft-1));
                        if (!--filesLeft) {
                            console.log('Last dir in ' + file);
                            return myCallback(null,"last file callback");

                        }
                    });
                }
                else { //normal file
                    var fileName = path.basename(file);
                    console.log(fileName);
                    zipArchiver.append(fs.createReadStream(file), {name: fileName});
                    console.log("File: " + file + ' items left: ' + (filesLeft-1));
                    if (!--filesLeft) {
                        console.log('Last file:' + file);
                        return myCallback(null,"last file callback");
                    }
                }
            }
        }
    });

};

var myServer = http.createServer(function (req, res) {
    console.log('request starting:' + req.method + " " + req.url);
    var dirName = path.dirname(req.url).toLowerCase();
    var baseName = path.basename(req.url).toLowerCase();
    var extName = path.extname(req.url).toLowerCase();
    console.log(dirName + " " + baseName + " " + extName);


    if (req.method.toLowerCase() === 'get' && (extName === '.html' || extName === '.js')) {
        fs.readFile(FileDirectory + req.url, function (error, content) {
            if (error) {
                res.writeHead(500);
                res.end();
            }
            else {
                res.writeHead(200, { 'Content-Type': 'text/html' });
                res.end(content, 'utf-8');
            }
        });
        return;
    }
    else if (req.method.toLowerCase() === 'get' && (extName === '')) {
        var myDir = FileDirectory + req.url;

        var zipArchiver = archiver('zip');
        res.setHeader("Content-Disposition", "attachment; filename=superZip.zip");
        zipArchiver.pipe(res);

        getFilesFromDir(myDir, zipArchiver, function ImCalledWhenDone(error, result) {
            if (error) {
                console.log("error getfilesfromdir");
            }
            else {
                console.log("everything went fine");
                zipArchiver.finalize(function (error) {
                    console.log(error);
                });
            }
        });
    };
    return;
});
myServer.listen(parseInt(port, 10));
console.log("Static file server running at\n  => http://localhost:" + port + "/\nCTRL + C to shutdown");