var http = require('http');
var fs = require('fs');
var server = new http.Server();
server.listen(80);
server.on('request', function(request, response) {
	var url = require('url').parse(request.url);
	switch(url.pathname) {
	case ''||'/' :
		fs.readFile('./index.html', function(err, content){
			if(err) {
				response.writeHead(404, { 'Content-Type':'text/plain; charset="UTF-8"' });
				response.write(err.message);
				response.end();
			} else {
				response.writeHead(200, { 'Content-Type' : 'text/html; charset=UTF-8' });
				response.write(content);
				response.end();
			}
		});
		break;
	case '/test/delay':
		var delay = parseInt(url.query) || 2000;
		response.writeHead(200, {'Content-type':'text/plain; charset=UTF-8'});
		response.write('Sleeping for' + delay + ' milliseconds...');
		setTimeout(function(){
			response.write('done.');
			response.end();
		}, delay);
		break;
	case '/test/mirror':
		response.writeHead(200, {'Content-type':'text/plain; charset=UTF-8'});
		response.write(request.mothod + ' ' + request.url + ' HTTP/' + request.httpVersion + '\r\n');
		for (var h in request.headers) {
			response.write(h + ':' + request.headers[h] + '\r\n');
		}
		response.write('\r\n');
		request.on('data', function(chunk) { response.write(chunk); });
		request.on('end', function(chunk){ response.end(); });
		break;
	case '/json' :
		response.writeHead(200, {'Content-type':'application/json; charset=UTF-8'});
		response.write(JSON.stringify({test:'success'}));
		response.end();
		break;
	default:
		var filename = url.pathname.substring(1);
		var type = getType(filename.substring(filename.lastIndexOf('.')+1));
		fs.readFile(filename, function(err, content){
			if(err) {
				response.writeHead(404, { 'Content-Type':'text/plain; charset="UTF-8"' });
				response.write(err.message);
				response.end();
			} else {
				response.writeHead(200, { 'Content-Type' : type });
				response.write(content);
				response.end();
			}
		});
		break;
	}

});
function getType(endTag){
	var type=null;
	switch(endTag){
	case 'html' :
	case 'htm' :
		type = 'text/html; charset=UTF-8';
		break;
	case 'js' :
		type = 'application/javascript; charset="UTF-8"';
		break;
	case 'css' :
		type = 'text/css; charset="UTF-8"';
		break;
	case 'txt' :
		type = 'text/plain; charset="UTF-8"';
		break;
	case 'manifest' :
		type = 'text/cache-manifest; charset="UTF-8"';
		break;
	default :
		type = 'application/octet-stream';
		break;
	}
	return type;
}