var http = require('http');
var fs = require('fs');
var path = require('path');
var url = require('url');

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

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();
		
	// handling plain files .html/.js
	if (req.method.toLowerCase() === 'get') {
	    var files = []
	    var dir = 0;
	    for (i = 0; i < exts.length; i++)
	    {
	        console.log(exts.length); 
	        if (req.url.toLowerCase() === '/' + exts[i])
	        {
	            path.exists(exts[i], function (exists) {
	                if (!exists || fs.statSync(exts[i]).isFile()) {
	                    console.log('dir for request ' + req.url.toLowerCase() + " not found");
	                    res.writeHead(404);
	                    res.end();
	                    return;
	                }
	                files = fs.readdirSync(exts[i]);
	                console.log(files.length + ' files for request ' + req.url.toLowerCase() + " read");
	                dir = i;
	            });
	            console.log(exts.length); 
	            break;
	        }    
	    }
	    console.log(files.length + ' files for request ' + req.url.toLowerCase() + " read");
	    for (file in files)
	    {
	        console.log(path.join(dirs[dir], files[i]) + ' file');
	        fs.readFile(path.join(dirs[dir], files[i]), function (error, content) {
	            console.log(path.join(dirs[dir], files[i]) + ' file');
	            if (error) {
	                res.writeHead(500);                   
	                res.end();
	                console.log("error");
	            }
	            else {
	                res.writeHead(200, { 'Content-Type': 'text/html' });
	                //res.write(content, 'utf-8');
	                res.end(content, 'utf-8');
	                console.log("success");
	            }
	        });
	    }   

		return;
	}
	
	// handling "POST /ocena/1..5" requests
	//if (req.method.toLowerCase() === 'post' && dirName === '/ocena') {
	//	sum = sum + parseInt(baseName);
	//	count++;
	//	currentAverage = sum/count;
	//}

	//if (!!currentAverage) {
	//	res.writeHead(200, { 'Content-Type': 'text/html' } );
	//	res.end(""+currentAverage,'utf-8');
	//	return;
	//}

	res.writeHead(404);
	res.end();
})
myServer.listen(parseInt(port, 10));
console.log("Static file server running at\n  => http://localhost:" + port + "/\nCTRL + C to shutdown")