app.js

const express = require('express');
const compression = require('compression');
const dotenv = require('dotenv');
const lusca = require('lusca');
const sass = require('node-sass-middleware');
const path = require('path');
const bodyParser = require('body-parser');
const chalk = require('chalk');
const errorHandler = require('errorhandler');
const fs = require('fs')

/**
 * Load environment variables from .env file, where API keys and passwords are configured.
 */
dotenv.load({ path: '.env' });

/**
 * Controllers (route handlers).
 */
const cardController = require('./controllers/cards');

/**
 * Express configuration.
 */
const app = express();
app.set('view engine', 'ejs');
app.set('host', process.env.OPENSHIFT_NODEJS_IP || '0.0.0.0');
app.set('port', process.env.PORT || process.env.OPENSHIFT_NODEJS_PORT || 8080);
app.use(compression());
app.use(sass({
  src: path.join(__dirname, 'public'),
  dest: path.join(__dirname, 'public')
}));
app.use(bodyParser.json({limit: '50mb'}));
app.use(bodyParser.urlencoded({
  limit: '50mb',
  extended: true,
  parameterLimit:50000
}));
app.use((req, res, next) => {
  if (req.path.indexOf('/api/') !== false) {
    next();
  } else {
    lusca.csrf()(req, res, next);
  }
});
app.use((req, res, next) => {
  if (req.path.indexOf('/api/') !== false) {
    next();
  } else {
	lusca.xframe('SAMEORIGIN')(req, res, next);
  }
});
app.use((req, res, next) => {
  if (req.path.indexOf('/api/') !== false) {
    next();
  } else {
	lusca.xssProtection(true)(req, res, next);
  }
});
app.use((req, res, next) => {
  res.locals.user = req.user;
  next();
});
app.all('/api/*', function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,PATCH,OPTIONS');
  res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, Authorization');
  res.header('Access-Control-Allow-Credentials', true);
  /*res.header("Access-Control-Allow-Headers", "X-Requested-With");*/
  next();
});
app.use(function(req, res, next) { req.start = Date.now(); next(); });
app.use(express.static(path.join(__dirname, 'public'), { maxAge: 31557600000 }));


app.get('/api', cardController.getApi);
app.get('/api/cards', cardController.getAllCards);
app.get('/api/card/:cardid', cardController.getCardById);
app.get('/api/categories', cardController.getCardsCategories);

/**
 * Error Handler.
 */
app.use(errorHandler());

if (!fs.existsSync(path.join(__dirname, 'static', 'Cards.json'))) {
	console.log('%s Cards.json not found. Please define some Cards at /static/Cards.json', chalk.red('×'));	
	console.log('---');
} else {
	
	if(process.env.RUN_DEMO){
		// index demo page 
		console.log('%s Running Demo Pages', chalk.green('✓'));
		app.get('/', function(req, res) {
		    res.render('demo');
		});
	}
	
	if (fs.existsSync(path.join(__dirname, 'static', 'Categories.json'))) {
		fs.readFile(path.join(__dirname, 'static', 'Categories.json'), 'utf8', (err, data) => {
		    if (err) throw err;
			var AllCats = [];
		    AllCats = JSON.parse(data);
			AllCats.forEach( (cat) => {
				console.log('%s Added custom EndPoint: /api/cards/'+cat+'/:catvalue', chalk.green('✓'));
				app.get('/api/cards/'+cat+'/:catvalue', cardController.getCardsByCategory);
			});
		
			/**
			 * Start Express server.
			 */
			app.listen(app.get('port'), () => {
			  console.log('%s App is running at http://localhost:%d in %s mode', chalk.green('✓'), app.get('port'), app.get('env'));
			  console.log('  Press CTRL-C to stop\n');
			});	
				
		});
	} else {
		/**
		 * Start Express server.
		 */
	    console.log('%s No Categories defined. Which is fine.', chalk.yellow('O'));
		app.listen(app.get('port'), () => {
		  console.log('%s App is running at http://localhost:%d in %s mode', chalk.green('✓'), app.get('port'), app.get('env'));
		  console.log('  Press CTRL-C to stop\n');
		});	
				
	}
}

module.exports = app;