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index.js
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index.js
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// Importation of NPM modules...
var express = require('express');
var favicon = require('serve-favicon');
var Negotiator = require('negotiator');
var bodyParser = require('body-parser');
// Importation of internal modules...
var i18n = require('./config/modules/i18n');
var openWeather = require('./config/modules/openWeather');
// Importation of seeds...
var selectionnableLanguages = require('./config/seeds/selectionnableLanguages');
var selectionnableTemperatureUnits = require('./config/seeds/temperatureUnits');
var selectionnablePressureUnits = require('./config/seeds/pressureUnits');
var selectionnableWindSpeedUnits = require('./config/seeds/windSpeedUnits');
var formats = require('./config/seeds/formats');
var timezones = require('./config/seeds/timezones');
var fontFamilies = require('./config/seeds/fontFamilies');
// Declaration of all required variables for the 'node_world_server' app with their default values...
var app = express();
var negotiator;
var currentLocale = null;
var currentDateAndTimeFormat = "X";
var currentCountryCode = timezones.getCountryCodeFromTimezone(Intl.DateTimeFormat().resolvedOptions().timeZone);
var currentTemperatureUnit = "Kelvin";
var currentTemperatureUnitSymbol = "";
var currentPressureUnit = "hectoPascal";
var currentPressureUnitSymbol = "hPa";
var currentWindSpeedUnit = "meter_per_second";
var currentWindSpeedUnitSymbol = "m/s";
var currentFontFamily = fontFamilies.getFontFamilyFromId(23);
// Retrieving the array of font families...
var fontFamiliesArray = fontFamilies.fontFamilies;
// Catching, treating and getting passed arguments to the 'passedArguments' constant...
const passedArguments = require('minimist')(process.argv.slice(2));
// Definition of all variables containing all values (openweathermap api key and Font Awesome Kit) to work the web app...
var openWeatherAPIKey = passedArguments['openWeatherAPIKey'];
var fontAwesomeKit = passedArguments['fontAwesomeKit'];
// Declaration of static files and favicon image...
app.use(favicon("assets/images/favicon.png"));
app.use(express.static("assets"));
// Function to update the current date and time of all timezones...
function updateDateAndTime(){
for(var i = 0; i < timezones.timezones.length; i++){
timezones.timezones[i].moment = timezones.moment.tz(timezones.timezones[i].timezone)
}
console.log("TYTY...");
}
// Function to update the "selected" field of the corresponding language's JSON depending on whether the current is selected or not...
function updateLanguageSelect(){
for(var i = 0; i < selectionnableLanguages.length; i++){
if(selectionnableLanguages[i].selected === "selected"){
selectionnableLanguages[i].selected = "";
}
}
for(var i = 0; i < selectionnableLanguages.length; i++){
if(selectionnableLanguages[i].value === currentLocale){
selectionnableLanguages[i].selected = "selected";
}
}
}
// Function to update the "selected" field of the corresponding date and time format's JSON depending on whether the current is selected or not...
function updateDaTSelect(formatDaTId) {
for(var i = 0; i < formats.length; i++){
if(formats[i].selected === "selected"){
formats[i].selected = "";
}
}
for(var i = 0; i < formats.length; i++){
if(formats[i].id === formatDaTId){
formats[i].selected = "selected";
}
}
}
// Function to update the "selected" field of the corresponding temperature unit's JSON depending on whether the current is selected or not...
function updateTemperatureUnit(wishedCurrentTemperatureUnit) {
for(var i = 0; i < selectionnableTemperatureUnits.length; i++){
if(selectionnableTemperatureUnits[i].selected === "selected"){
selectionnableTemperatureUnits[i].selected = "";
}
}
for(var i = 0; i < selectionnableTemperatureUnits.length; i++){
if(selectionnableTemperatureUnits[i].unit === wishedCurrentTemperatureUnit){
selectionnableTemperatureUnits[i].selected = "selected";
}
}
}
// Function to update the "selected" field of the corresponding pressure unit's JSON depending on whether the current is selected or not...
function updatePressureUnit(wishedCurrentPressureUnit) {
for(var i = 0; i < selectionnablePressureUnits.length; i++){
if(selectionnablePressureUnits[i].selected === "selected"){
selectionnablePressureUnits[i].selected = "";
}
}
for(var i = 0; i < selectionnablePressureUnits.length; i++){
if(selectionnablePressureUnits[i].unit === wishedCurrentPressureUnit){
selectionnablePressureUnits[i].selected = "selected";
}
}
}
// Function to update the "selected" field of the corresponding wind speed unit's JSON depending on whether the current is selected or not...
function updateWindSpeedUnit(wishedCurrentWindSpeedUnit) {
for(var i = 0; i < selectionnableWindSpeedUnits.length; i++){
if(selectionnableWindSpeedUnits[i].selected === "selected"){
selectionnableWindSpeedUnits[i].selected = "";
}
}
for(var i = 0; i < selectionnableWindSpeedUnits.length; i++){
if(selectionnableWindSpeedUnits[i].unit === wishedCurrentWindSpeedUnit){
selectionnableWindSpeedUnits[i].selected = "selected";
}
}
}
// Function to update the "selected" field of the corresponding font family's JSON depending on whether the current is selected or not...
function updateFontFamily(wishedCurrentFontFamily) {
for(var i = 0; i < fontFamiliesArray.length; i++){
if(fontFamiliesArray[i].selected === "selected"){
fontFamiliesArray[i].selected = "";
}
}
for(var i = 0; i < fontFamiliesArray.length; i++){
if(fontFamiliesArray[i].font === wishedCurrentFontFamily){
fontFamiliesArray[i].selected = "selected";
}
}
}
// Function to list all language locales ("value" field of each JSON) in a to-returned array...
function listAllLocalesAsArray() {
var returnedLocalsArray = [];
for(var i = 0; i < selectionnableLanguages.length; i++){
returnedLocalsArray.push(selectionnableLanguages[i].value);
}
return returnedLocalsArray;
}
// Function to identify the format id passed as a parameter in the JSON...
function identificationIDParDaTFormat(formatDaT) {
var DaTFormatId = 0;
for(var i = 0; i < formats.length; i++){
if(formats[i].format === formatDaT) {
DaTFormatId = formats[i].id;
break;
}
}
return DaTFormatId;
}
// Function to identify the temperature unit symbol of the 'wishedTemperatureUnit' temperature unit passed in parameter...
function getTemperatureUnitSymbol(wishedTemperatureUnit) {
var temperatureUnitSymbol = "";
for(var i = 0; i < selectionnableTemperatureUnits.length; i++){
if(selectionnableTemperatureUnits[i].unit === wishedTemperatureUnit) {
temperatureUnitSymbol = selectionnableTemperatureUnits[i].symbol;
break;
}
}
return temperatureUnitSymbol;
}
// Function to identify the pressure unit symbol of the 'wishedPressureUnit' pressure unit passed in parameter...
function getPressureUnitSymbol(wishedPressureUnit) {
var pressureUnitSymbol = "";
for(var i = 0; i < selectionnablePressureUnits.length; i++){
if(selectionnablePressureUnits[i].unit === wishedPressureUnit) {
pressureUnitSymbol = selectionnablePressureUnits[i].symbol;
break;
}
}
return pressureUnitSymbol;
}
// Function to identify the wind speed unit symbol of the 'wishedWindSpeedUnit' wind speed unit passed in parameter...
function getWindSpeedUnitSymbol(wishedWindSpeedUnit) {
}
//
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
// Declaration of views files...
app.set('views', __dirname + '/views');
// Declaration of using 'i18n' module...
app.use(i18n);
// Definition of the 'GET' method which is called when an HTTP request with a 'GET' method is received by the current application...
app.get('/', function(req, res) {
// Defining the current locale at the call the 'node_world_server' application in your browser ...
if(currentLocale === null) {
// Configuration of 'negociator' and 'browserLanguages' variables...
negotiator = new Negotiator(req);
var browserLanguages = negotiator.languages();
// Configuration of 'currentLocale' variable...
currentLocale = negotiator.language(browserLanguages);
currentLocale = currentLocale.toLowerCase();
// Affectation of 'currentLocale' at the locale for timezones...
timezones.moment.locale(currentLocale);
}
//
var utcOffsetArray = [];
setInterval(updateDateAndTime, 1000);
// Listing all locales and put all of them in the 'listOfAllLocales' array...
var listOfAllLocales = listAllLocalesAsArray();
// Particular case of french language...
if(currentLocale === "fr") {
currentLocale = "fr-fr";
}
// Particular case of 'currentLocale' value not in list of predefined locales...
if(!listOfAllLocales.includes(currentLocale)){
currentLocale = "en-us";
}
// Updating the languages 'select' for the corresponding form...
updateLanguageSelect();
//
res.setLocale(currentLocale);
//
updateDaTSelect(identificationIDParDaTFormat(currentDateAndTimeFormat));
// Defining the temperature unit symbol from the 'currentTemperatureUnit' variable...
currentTemperatureUnitSymbol = getTemperatureUnitSymbol(currentTemperatureUnit);
// Updating the temperature unit 'select' for the corresponding form...
updateTemperatureUnit(currentTemperatureUnit);
// Updating the pressure unit 'select' for the corresponding form...
updatePressureUnit(currentPressureUnit);
// Updating the familly font 'select' for the corresponding form...
updateFontFamily(currentFontFamily[0]);
// Defining the pressure unit symbol from the 'currentTemperatureUnit' variable...
currentPressureUnitSymbol = getPressureUnitSymbol(currentPressureUnit);
// Defining a series of array and hash table for treatments in templates...
var weatherReferencesHashTable = new Object();
var countryCodeHashTable = new Object();
var renderTimezonesArray = [];
// Definition of the array 'keysOfCountryCodeHashTable' which will contain all the keys used in the associative array 'countryCodeHashTable'...
var keysOfCountryCodeHashTable = [];
// Configuration of all tables and hash tables...
for(var i = 0; i < timezones.timezones.length; i++) {
// Configuration of 'weatherReferencesHashTable' hash table and 'renderTimezonesArray' array...
if(timezones.timezones[i].country_code === currentCountryCode) {
weatherReferencesHashTable[timezones.timezones[i].weather_reference] = timezones.timezones[i].country_code;
renderTimezonesArray.push(timezones.timezones[i]);
}
// Fill in all the country codes entered in the JSON file of the timezones in the intermediate table 'keysOfCountryCodeHashTable'...
if(!keysOfCountryCodeHashTable.includes(timezones.timezones[i].country_code)) {
keysOfCountryCodeHashTable.push(timezones.timezones[i].country_code);
}
}
// Sort all country codes alphabetically...
keysOfCountryCodeHashTable.sort();
// Browse of the array 'keysOfCountryCodeHashTable' containing the future keys of the future associative array 'countryCodeHashTable'...
for(var i = 0; i < keysOfCountryCodeHashTable.length; i++) {
// Configuration of the 'selected' element...
if(keysOfCountryCodeHashTable[i] === currentCountryCode) {
countryCodeHashTable[keysOfCountryCodeHashTable[i]] = 'selected';
} else {
countryCodeHashTable[keysOfCountryCodeHashTable[i]] = '';
}
}
// Calling the 'getWeather' method from the 'openWeather' module
openWeather.getWeather(weatherReferencesHashTable, openWeatherAPIKey).then(function(results) {
//
for(i = 0; i < results.length; i++)
{
// In the case that the current element is a valable weather structure...
if(results[i].cod === 200) {
// Treatment of 'weather_description' field for translation...
results[i].weather_description = results[i].weather_description.charAt(0).toUpperCase() + results[i].weather_description.slice(1);
results[i].weather_description = results[i].weather_description.split(' ').join('_');
// Treatment of 'utc_offset' field to define all UTC offset...
utcOffsetArray.push(openWeather.utcOffsetDefinitionFunction(results[i].utc_offset));
// In the case where the current format for dates and times is "timestamp"...
if(currentDateAndTimeFormat === "X") {
// Treatment for sunrise and sunset dates and times without any argument for the format for dates and times...
results[i].sys_sunrise = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunrise, results[i].timezone);
results[i].sys_sunset = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunset, results[i].timezone);
// In other cases...
} else {
// Treatment for sunrise and sunset dates and times in the newly whished format for dates and times...
results[i].sys_sunrise = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunrise, results[i].timezone, "HH:mm:ss");
results[i].sys_sunset = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunset, results[i].timezone, "HH:mm:ss");
}
// Treatment of 'uv_risk' field for translation...
results[i].uv_risk = results[i].uv_risk.charAt(0).toUpperCase() + results[i].uv_risk.slice(1);
results[i].uv_risk = results[i].uv_risk.split(' ').join('_');
// In the contrary case ("else")...
} else {
// Adding an empty element in the 'utcOffsetArray' array...
utcOffsetArray.push("");
}
}
// Definition of the 'isAvailableFlag' variable with the 'true' default value...
var isAvailableFlag = true;
// Definition of the 'currentCountryFlagURL' variable, an empty variable...
var currentCountryFlagURL = "";
// In the case where the country code is "NaNC" (no identified country), so...
if(currentCountryCode === "NaNC") {
// There is not available flag, the value of the 'isAvailableFlag' variable is set to 'false'...
isAvailableFlag = false;
// Configuration of the 'currentCountryFlagURL' without any flag to display...
currentCountryFlagURL = "";
// In the contrary case ("else")...
} else {
// There is an available flag, the value of the 'isAvailableFlag' variable is set to 'true'...
isAvailableFlag = true;
// Configuration of the 'currentCountryFlagURL' to get and display current country's flag...
currentCountryFlagURL = "https://flagcdn.com/h40/" + currentCountryCode.toLowerCase() + ".png";
}
// Configuration of the response to be rendered with the parameters for rendering on the web page ('index.ejs' file)...
res.render('index.ejs', {
"currentCountryFlagURL": currentCountryFlagURL,
"isAvailableFlag": isAvailableFlag,
"selectionnableLanguages": selectionnableLanguages,
"currentTemperatureUnitSymbol": currentTemperatureUnitSymbol,
"currentPressureUnitSymbol": currentPressureUnitSymbol,
"currentWindSpeedUnitSymbol": currentWindSpeedUnitSymbol,
"fontAwesomeKit": fontAwesomeKit,
"selectionnableTemperatureUnits": selectionnableTemperatureUnits,
"selectionnablePressureUnits": selectionnablePressureUnits,
"selectionnableWindSpeedUnits": selectionnableWindSpeedUnits,
"countryCodeHashTable": countryCodeHashTable,
"timezones": renderTimezonesArray,
"currentDateAndTimeFormat": currentDateAndTimeFormat,
"fontFamilies": fontFamiliesArray,
"formats": formats,
"weatherResults": results,
"utcOffsetArray": utcOffsetArray,
"currentFontFamily": currentFontFamily
});
});
});
// Definition of the 'POST' method which is called when an HTTP request with a 'POST' method is received by the current application...
app.post('/', function(req, res) {
// Defining a series of array and hash table for treatments in templates...
var weatherReferencesHashTable = new Object();
var countryCodeHashTable = new Object();
var renderTimezonesArray = [];
var listOfAllLocales = [];
var utcOffsetArray = [];
// Definition of the array 'keysOfCountryCodeHashTable' which will contain all the keys used in the associative array 'countryCodeHashTable'...
var keysOfCountryCodeHashTable = [];
// If (or in the case) the 'currentLocale' variable is null so...
if(currentLocale === null){
// Configuration of 'negociator' and 'browserLanguages' variables...
negotiator = new Negotiator(req);
var browserLanguages = negotiator.languages();
// Configuration of 'currentLocale' variable...
currentLocale = negotiator.language(browserLanguages);
currentLocale = currentLocale.toLowerCase();
}
// Affectation of 'currentLocale' at the locale for timezones...
timezones.moment.locale(currentLocale);
// Listing all locales and put all of them in the 'listOfAllLocales' array...
listOfAllLocales = listAllLocalesAsArray();
// Particular case of french language...
if(currentLocale === "fr") {
currentLocale = "fr-fr";
}
// Particular case of 'currentLocale' value not in list of predefined locales...
if(!listOfAllLocales.includes(currentLocale)){
currentLocale = "en-us";
}
// Updating the languages 'select' for the corresponding form...
updateLanguageSelect();
// If the submit form is the "choosen_country_code_form" one...
if(req.body.current_form === "choosen_country_code_form")
{
currentCountryCode = req.body.choosen_country_code;
res.setLocale(currentLocale);
// If the submit form is the "choosen_language_form" one...
} else if(req.body.current_form === "choosen_language_form") {
currentLocale = req.body.choosen_language;
currentLocale = currentLocale.toLowerCase();
timezones.moment.locale(currentLocale);
updateLanguageSelect();
res.setLocale(currentLocale);
// If the submit form is the "choosen_format_form" one...
} else if(req.body.current_form === "choosen_format_form") {
currentDateAndTimeFormat = formats[parseInt(req.body.choosen_date_and_time_format)].format;
updateDaTSelect(parseInt(req.body.choosen_date_and_time_format));
res.setLocale(currentLocale);
// If the submit form is the "choosen_temperature_unit_form" one...
} else if(req.body.current_form === "choosen_temperature_unit_form") {
currentTemperatureUnit = req.body.choosen_temperature_unit;
currentTemperatureUnitSymbol = getTemperatureUnitSymbol(currentTemperatureUnit);
updateTemperatureUnit(currentTemperatureUnit);
res.setLocale(currentLocale);
// If the submit form is the "choosen_pressure_unit_form" one...
} else if(req.body.current_form === "choosen_pressure_unit_form") {
currentPressureUnit = req.body.choosen_pressure_unit;
currentPressureUnitSymbol = getPressureUnitSymbol(currentPressureUnit);
updatePressureUnit(currentPressureUnit);
res.setLocale(currentLocale);
// If the submit form is the "choosen_font_family_form" one...
} else if(req.body.current_form === "choosen_font_family_form") {
// Determination of the selected family font...
var choosenFontFamilyId = parseInt(req.body.choosen_font_family_format);
var choosenFontFamilyName = fontFamilies.getFontFamilyFromId(choosenFontFamilyId);
// Definition of the selected family font as 'currentFontFamily' value (so...current font family of the app)...
currentFontFamily = choosenFontFamilyName;
res.setLocale(currentLocale);
}
// Configuration of all tables and hash tables...
for(var i = 0; i < timezones.timezones.length; i++) {
// Configuration of 'weatherReferencesHashTable' hash table and 'renderTimezonesArray' array...
if(timezones.timezones[i].country_code === currentCountryCode) {
weatherReferencesHashTable[timezones.timezones[i].weather_reference] = timezones.timezones[i].country_code;
renderTimezonesArray.push(timezones.timezones[i]);
}
// Fill in all the country codes entered in the JSON file of the timezones in the intermediate table 'keysOfCountryCodeHashTable'...
if(!keysOfCountryCodeHashTable.includes(timezones.timezones[i].country_code)) {
keysOfCountryCodeHashTable.push(timezones.timezones[i].country_code);
}
}
// Sort all country codes alphabetically...
keysOfCountryCodeHashTable.sort();
// Browse of the array 'keysOfCountryCodeHashTable' containing the future keys of the future associative array 'countryCodeHashTable'...
for(var i = 0; i < keysOfCountryCodeHashTable.length; i++) {
// Configuration of the 'selected' element...
if(keysOfCountryCodeHashTable[i] === currentCountryCode) {
countryCodeHashTable[keysOfCountryCodeHashTable[i]] = 'selected';
} else {
countryCodeHashTable[keysOfCountryCodeHashTable[i]] = '';
}
}
setInterval(updateDateAndTime, 1000);
// Calling the 'getWeather' method from the 'openWeather' module
openWeather.getWeather(weatherReferencesHashTable, openWeatherAPIKey).then(function(results) {
// Loop to cover all of multiple weathers...
for(i = 0; i < results.length; i++)
{
// In the case that the current element is a valable weather structure...
if(results[i].cod === 200) {
// Treatment of 'weather_description' field for translation...
results[i].weather_description = results[i].weather_description.charAt(0).toUpperCase() + results[i].weather_description.slice(1);
results[i].weather_description = results[i].weather_description.split(' ').join('_');
// Treatment for all temperatures...
results[i].main_temp = openWeather.temperatureConversionFunction(results[i].main_temp, currentTemperatureUnit);
results[i].main_feels_like = openWeather.temperatureConversionFunction(results[i].main_feels_like, currentTemperatureUnit);
results[i].main_temp_min = openWeather.temperatureConversionFunction(results[i].main_temp_min, currentTemperatureUnit);
results[i].main_temp_max = openWeather.temperatureConversionFunction(results[i].main_temp_max, currentTemperatureUnit);
// Treatment of 'utc_offset' field to define all UTC offset...
utcOffsetArray.push(openWeather.utcOffsetDefinitionFunction(results[i].utc_offset));
// In the case where the current format for dates and times is "timestamp"...
if(currentDateAndTimeFormat === "X") {
// Treatment for sunrise and sunset dates and times without any argument for the format for dates and times...
results[i].sys_sunrise = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunrise, results[i].timezone);
results[i].sys_sunset = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunset, results[i].timezone);
// In other cases...
} else {
// Treatment for sunrise and sunset dates and times in the newly whished format for dates and times...
results[i].sys_sunrise = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunrise, results[i].timezone, "HH:mm:ss");
results[i].sys_sunset = openWeather.dateAndTimeFormatConversionFunction(results[i].sys_sunset, results[i].timezone, "HH:mm:ss");
}
//Treatment for the pressure...
results[i].main_pressure = openWeather.pressureConversionFunction(results[i].main_pressure, currentPressureUnit);
// Treatment of 'uv_risk' field for translation...
results[i].uv_risk = results[i].uv_risk.charAt(0).toUpperCase() + results[i].uv_risk.slice(1);
results[i].uv_risk = results[i].uv_risk.split(' ').join('_');
// In the contrary case ("else")...
} else {
// Adding an empty element in the 'utcOffsetArray' array...
utcOffsetArray.push("");
}
}
// Definition of the 'isAvailableFlag' variable with the 'true' default value...
var isAvailableFlag = true;
// Definition of the 'currentCountryFlagURL' variable, an empty variable...
var currentCountryFlagURL = "";
// In the case where the country code is "NaNC" (no identified country), so...
if(currentCountryCode === "NaNC") {
// There is not available flag, the value of the 'isAvailableFlag' variable is set to 'false'...
isAvailableFlag = false;
// Configuration of the 'currentCountryFlagURL' without any flag to display...
currentCountryFlagURL = "";
// In the contrary case ("else")...
} else {
// There is an available flag, the value of the 'isAvailableFlag' variable is set to 'true'...
isAvailableFlag = true;
// Configuration of the 'currentCountryFlagURL' to get and display current country's flag...
currentCountryFlagURL = "https://flagcdn.com/h40/" + currentCountryCode.toLowerCase() + ".png";
}
// Updating the familly font 'select' for the corresponding form...
updateFontFamily(currentFontFamily[0]);
// Configuration of the response to be rendered with the parameters for rendering on the web page ('index.ejs' file)...
res.render('index.ejs', {
"currentCountryFlagURL": currentCountryFlagURL,
"isAvailableFlag": isAvailableFlag,
"selectionnableLanguages": selectionnableLanguages,
"currentTemperatureUnitSymbol": currentTemperatureUnitSymbol,
"currentPressureUnitSymbol": currentPressureUnitSymbol,
"currentWindSpeedUnitSymbol": currentWindSpeedUnitSymbol,
"fontAwesomeKit": fontAwesomeKit,
"selectionnableTemperatureUnits": selectionnableTemperatureUnits,
"selectionnablePressureUnits": selectionnablePressureUnits,
"selectionnableWindSpeedUnits": selectionnableWindSpeedUnits,
"countryCodeHashTable": countryCodeHashTable,
"timezones": renderTimezonesArray,
"currentDateAndTimeFormat": currentDateAndTimeFormat,
"fontFamilies": fontFamiliesArray,
"formats": formats,
"weatherResults": results,
"utcOffsetArray": utcOffsetArray,
"currentFontFamily": currentFontFamily
});
});
});
// Defining the listening port for the 'node_world_server' application...
app.listen('80');