// Copyright (c) 2017 Titanium I.T. LLC. All rights reserved. For license, see "README" or "LICENSE" file.

(function() {

"use strict";

const http = require("http");

const fs = require("fs");

const send = require("send");

const util = require("util");

module.exports = class HttpServer {

constructor(contentDir, notFoundPageToServe) {

this._httpServer = http.createServer();

handleHttpRequests(this._httpServer, contentDir, notFoundPageToServe);

}

start(portNumber) {

const listen = util.promisify(this._httpServer.listen.bind(this._httpServer));

return listen(portNumber);

}

stop() {

const close = util.promisify(this._httpServer.close.bind(this._httpServer));

return close();

}

getNodeServer() {

return this._httpServer;

}

};

function handleHttpRequests(httpServer, contentDir, notFoundPageToServe) {

httpServer.on("request", function(request, response) {

send(request, request.url, { root: contentDir }).on("error", handleError).pipe(response);

function handleError(err) {

if (err.status === 404) serveErrorFile(response, 404, contentDir + "/" + notFoundPageToServe);

else throw err;

}

});

}

function serveErrorFile(response, statusCode, file) {

response.statusCode = statusCode;

response.setHeader("Content-Type", "text/html; charset=UTF-8");

fs.readFile(file, function(err, data) {

if (err) throw err;

response.end(data);

});

}

}());