"use strict";

var server = require("./bin/server");               // make server module available
var router = require("./routes/router");            // router module

server.start(router);                               // start server
                                                    // callback to route

"use strict";
/*
 *  new server.js adds request body data
 */
const http = require("http");                   // http module
const lib = require("../private/libWebUtil");   // home grown utilities
const hostname = "localhost";
const port = Number(process.argv[2]) || 3000;

module.exports = {
    start(router) {
        const server = http.createServer();

        server.on("request", function (req, res) {      // eventhandler for "request"
            console.log(lib.makeLogEntry(req));         // home made utility for logging
            let body = [];
            req.on("data", function (bodyData) {        // eventhandling for data reception
                body.push(bodyData);                    // bodyData is an object
            });
            req.on("end", function () {                 // eventhandling for end-of-data
                body = Buffer.concat(body).toString();  // body2string
                router.route(req, res, body);           // pass to router
            });
        });

        server.listen(port, hostname, function () {
            console.log(`Log: Server started on http://${hostname}:${port}/`);
        });
    }
}

/* libWebUtil.js Service Module */
"use strict";
const querystring = require("querystring"); // file system access

const getJSONString = function (obj) {      // prettyprint obj
    return JSON.stringify(obj, null, 4);
}

const makeWebArrays = function (req, data) {
    let get = req.url.split("?");
    let qs = "";
    if (get.length === 2) {
        qs = get[1];
    }

    let GET = querystring.parse(qs);
    let POST = querystring.parse(data);
    console.log(getJSONString({ GET, POST }));
    return { GET, POST };
}

const makeLogEntry = function(req) {
    let now = new Date();
    let s = "";
    let month = now.getMonth() < 10 ? "0" + now.getMonth() : "" + now.getMonth();
    let date = now.getDate() < 10 ? "0" + now.getDate() : "" + now.getDate();
    let hours = now.getHours() < 10 ? "0" + now.getHours() : "" + now.getHours();
    let mins = now.getMinutes() < 10 ? "0" + now.getMinutes() : "" + now.getMinutes();
    let secs = now.getSeconds() < 10 ? "0" + now.getSeconds() : "" + now.getSeconds();

    s += `${now.getFullYear()}-${month}-${date}`;
    s += "T";
    s += `${hours}:${mins}:${secs}`;
    s += " ";
    s += `${req.method} ${req.url}`;
    return s;
}
exports.makeWebArrays = makeWebArrays;
exports.makeLogEntry = makeLogEntry;

"use strict";
/*
 * check if routed handler function exists
 * if yes call it, else complain
 */
const handlers = require("./handlers");               // handlers module

const requestHandlers = {                             // application urls here
    "/home": handlers.home,
    "/info": handlers.info,
    "/contact": handlers.contact,
    "/about": handlers.about,
    "/hello": handlers.hello,
    "/notfound": handlers.notfound,
}

module.exports = {
    route(req, res, body) {

        if (typeof requestHandlers[req.url] === 'function') { // look for route
            requestHandlers[req.url](req, res);               // if found use it
        } else {
            requestHandlers["/notfound"](req, res);           // use notfound
        }
    }
}

'use strict';
/*
 * handlers.js
 * Requesthandlers to be called by the router mechanism
 */
module.exports = {
    home(req, res) {
        res.end("<h1>Front Page</h1>");
    },
    info(req, res) {
        res.end("<h1>Info Page</h1>");
    },
    contact(req, res) {
        res.end("<h1>Contact Us at:</h1>");
    },
    about(req, res) {
        res.end("<h1>Learn About Us</h1>");
    },
    hello(req, res) {
        res.end("<h1>Send Us an Email</h1>");
    },
    notfound(req, res) {
        console.log(`Log: No handler found for route ${req.url}.`);
        res.end();
    }
}