Core Module Setup

This section covers all necessary setup of the core modules essential for CMS to be in running state.

Express Setup

All the necessary packages and the configuration required for application are configured in the (express.js) file located at (src/loaders/express.js)

let expressLoader = {};
expressLoader.init =  (app) => {
  app.use(compression());
  app.use(bodyParser.json({limit: '50mb'}));
  app.use(bodyParser.urlencoded({limit: '50mb', extended: true}));
  app.use(express.static(path.join(__dirname, '../../public')));
  app.set('views', path.join(__dirname, '../views/backend'));
  app.set('view engine', 'ejs');
  require('../config/passport')(passport);
}
module.exports = expressLoader;

IOC Container Setup

Similarly, the file responsible for container setup is (container.js) which is located at (src/loaders/container.js).

const awilix = require("awilix");

const { Lifetime } = awilix;

const container = awilix.createContainer({
 injectionMode: awilix.InjectionMode.PROXY
});

const containerSetup =  () => {
 container.loadModules(
   [
     "./src/controllers/**/*.js"
   ],
   {
     resolverOptions: {
       register: awilix.asClass,
       lifetime: Lifetime.transient
     },
     formatName: "camelCase"
   }
 );
}
module.exports = {
 container,
 containerSetup
};

All the controllers are resolved as class by awilix in above code snippet.

Local Function Setup

All the local functions are created in the (locals.js) file located at (src/loaders/locals.js).

let localFunctionLoader = {};

localFunctionLoader.init =  (app) => {

  app.locals._ = _;
  app.locals.cmsTitle = cmsTitle;
  app.locals.baseUrl = cmsUrl;

  app.locals.getDuration = (date) => {
    let newDate = date.split('/');
    let m1 = moment().format('YYYY-MM');
    let m2 = moment(newDate[1] + '-' + newDate[0]).format('YYYY-MM');
    return moment.preciseDiff(m1, m2);
  };
}
module.exports = localFunctionLoader;

Initialize Core Functions

const expressLoader =  require('./express');
const localFunctionLoader =  require('./locals');
const { containerSetup } = require("@container");

let init = async (app) => {
  containerSetup(app);
  expressLoader.init(app);
  localFunctionLoader.init(app);
};

module.exports = { init };

All the setup functions are called in the (index.js) file located at (src/loaders/index.js)

Bootup Application

The main file responsible for booting up the application is (app.js) file located at (src/app.js) where all the loader functions are initiated and express server is started.

"use strict";
const config = require('./config');
let startServer =  () => {
  const app = require("./server")();
  app.listen(config.port, err => {
    if (err) {
      console.log(err);
      return;
    }
    console.log(`Express running at port: ${config.port} -> ${config.cmsUrl}`);
  });
};
startServer();