app.js

const express = require('express');
const morgan = require('morgan');
const rateLimit = require('express-rate-limit');
const helmet = require('helmet');
const mongoSanatize = require('express-mongo-sanitize');
const xss = require('xss-clean');
const hpp = require('hpp');

const AppError = require('./utils/appError');
const globalErrorHandler = require('./controllers/errorController');
const tourRouter = require('./routes/tourRoutes');
const userRouter = require('./routes/userRoutes');
const reviewRouter = require('./routes/reviewRoutes');
const app = express();

//#region  1) MIDDLEWARES

//Set security HTTP Headers
app.use(helmet());

// Development logging
if (process.env.NODE_ENV === 'development') {
  app.use(morgan('dev'));
}

// Limit requests from same API
const limiter = rateLimit({
  max: 100,
  windowMs: 60 * 60 * 1000,
  message:
    'Too many requests from this IP address. Please try again in an hour!'
});
app.use('/api', limiter);

// Body Parser - Reading data from body to req.body
app.use(express.json({ limit: '10kb' }));

// Data sanitization against NO SQL DB Injections
app.use(mongoSanatize());

// Data sanitization against XSS
app.use(xss());

// Prevent parameter pollution
app.use(
  hpp({
    whitelist: [
      'duration',
      'ratingsAverage',
      'ratingsQuantity',
      'maxGroupSize',
      'difficulty',
      'price'
    ]
  })
);
// Serving Static files
app.use(express.static(`${__dirname}/public`));

// Test middleware
app.use((req, res, next) => {
  // console.log('Hello from the middleware 👋');
  next();
});

app.use((req, res, next) => {
  req.requestTime = new Date().toISOString();
  next();
});
//#endregion

//#region  2) ROUTES
app.use('/api/v1/tours', tourRouter);
app.use('/api/v1/users', userRouter);
app.use('/api/v1/reviews', reviewRouter);
app.all('*', (req, res, next) => {
  next(new AppError(`Can't find ${req.originalUrl} on this server!`, 404));
});

app.use(globalErrorHandler);
//#endregion

module.exports = app;