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Express-Adv/.gitignore

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+/node_modules

Express-Adv/app.js

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+const express = require('express');
+const app = express();
+const startupDebugger=require('debug')('app:startup')
+
+const dbDebugger=require('debug')('app:db');
+const morgan = require('morgan');
+
+
+if (app.get('env') === 'development') {
+    ///Third party middle ware
+    app.use(morgan('tiny'));
+    startupDebugger("Morgan Enabled")
+}
+
+
+
+//database work
+
+
+dbDebugger('Connected to the Database')
+const port = process.env.PORT || 3000;
+app.listen(port, () => {
+    console.log(`Listening to port ${port}`);
+});

Express-Adv/config/custom-environment-variables.json

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+{
+    "name":"My Express App - Development",
+    "mail":{
+        "host":"Mail server",
+        "password":"app_password"
+    }
+}

Express-Adv/config/default.json

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+{
+    "name":"My Express App",
+    "mail": {
+        "password": "app_password"
+      }
+} 

Express-Adv/config/development.json

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+{
+    "name":"My Express App - Development",
+    "mail":{
+        "host":"Development mail server"
+    }
+}

Express-Adv/config/production.json

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+{
+    "name":"My Express App - Production",
+    "mail":{
+        "host":"Production mail server"
+    }
+}

Express-Adv/index.js

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+const express = require('express');
+const app = express();
+require('dotenv').config();
+
+
+
+const dbDebugger=require('debug')('app:db');
+const Joi = require('joi');
+const helmet = require('helmet');
+const morgan = require('morgan');
+const config = require('config');
+const logger = require('./logger');
+ const courses=require('./routes/courses')
+ const main=require('./routes/main')
+
+
+ app.use('/api/courses',courses)
+ app.use('/',main)
+// Cheking Enviornment
+console.log(`Node_env:${process.env.NODE_ENV}`);
+// console.log(`${app.get('env')}`);
+// JSON and URL-encoded middleware with options
+
+app.set('view engine','pug')
+app.set('views','./views')
+
+//Built-in Middleware
+app.use(express.json());
+//Built-in Middleware
+//url encoded Payroll   key=value $ key=value
+app.use(express.urlencoded({ extended: true }));
+//Built-in Middleware
+/// for sending css,html,js content
+app.use(express.static('public'))
+
+///Third party middle ware
+app.use(helmet());
+
+
+
+//configuration
+
+console.log("Application name:" + config.get('name'));
+console.log("Application mail:" + config.get('mail.host'));
+console.log("Application mail Password:" + config.get('mail.password'));
+
+// Enviornment Checking
+if (app.get('env') === 'development') {
+    ///Third party middle ware
+    app.use(morgan('tiny'));
+    console.log("Morgan Enabled")
+}
+
+
+
+// Custom Middleware
+app.use(logger);
+app.use(function (req, res, next) {
+    console.log('Authenticating...');
+    next();
+});
+
+
+
+const port = process.env.PORT || 3000;
+app.listen(port, () => {
+    console.log(`Listening to port ${port}`);
+});
+
+
+
+//  $env:app_password = "123" 
+///  nodemon index.js

Express-Adv/logger.js

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+function log(req,res,next) {
+    console.log('Logging....');
+    next();
+
+}
+
+module.exports=log;