app.js

"use strict";

const express = require('express');
const compression = require('compression');
const helmet = require('helmet');

const path = require('path');
const cookieParser = require('cookie-parser');

const initializeDatabases = require('./db');
const system = require('./system/controller');
const errorHandler = require('./system/errorHandler');

const index = require('./routes/index');

const config = require('./config/config.json');
const lang = require('./config/language/' + config.general.defaultLanguage + '.json');

const app = express();
const port = config.general.port;

// View engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// Use gzip compression and security patch
app.use(compression());
app.use(helmet());

// Initialize public directory
app.use(express.static(path.join(__dirname, 'public')));

// Support parsing of application/json type post data
app.use(express.json());
// Support parsing of application/x-www-form-urlencoded post data
app.use(express.urlencoded({ extended: true }));
// Support cookie parsing
app.use(cookieParser());

const startApp = async () => {
    // Initialize databases
    const dbs = await initializeDatabases().catch((err) => {
        console.error('Failed to make all database connections!');
        console.error(err);
        process.exit(1);
    });

    // Setup controller
    const controller = await system(config, lang, dbs);

    // Initialize routes
    app.use('/', index(controller));

    app.listen(port, () => {
        console.log('App running on port ' + port);
    });

    // Initialize error handler
    app.use(errorHandler.catch404(lang));
    app.use(errorHandler.initialize(controller));
}

startApp();