app.js

const path = require('path');
const express = require('express');
const morgan = require('morgan');
const rateLimit = require('express-rate-limit');
const helmet = require('helmet');
const mongoSanitize = require('express-mongo-sanitize');
const xss = require('xss-clean');
const hpp = require('hpp');
const cookieParser = require('cookie-parser');
const compression = require('compression');

const CustomError = require('./utils/CustomError');
const globalErrorHandler = require('./controllers/errorController');

const tourRouter = require('./routes/tourRouter');
const userRouter = require('./routes/userRouter');
const reviewRouter = require('./routes/reviewRouter');
const bookingRouter = require('./routes/bookingRouter');
const viewRouter = require('./routes/viewRouter');

const app = express();

app.set('view engine', 'pug');
app.set('views', path.join(__dirname, 'views'));

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

app.use(helmet());

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

const limiter = rateLimit({
  limit: 100,
  windowMs: 15 * 60 * 1000,
  message: 'too many requests, please try again in 15 minutes',
});

app.use(limiter);

app.use(express.json({ limit: '250kb' }));
app.use(cookieParser());

app.use(mongoSanitize());

app.use(xss());

app.use(
  hpp({
    whitelist: [
      'duration',
      'ratingsQuantity',
      'ratingsAverage',
      'maxGroupSize',
      'difficulty',
      'price',
    ],
  }),
);

app.use(compression());

app.use('/', viewRouter);
app.use('/api/v1/tours', tourRouter);
app.use('/api/v1/users', userRouter);
app.use('/api/v1/reviews', reviewRouter);
app.use('/api/v1/bookings', bookingRouter);
app.all('*', (req, res, next) => {
  next(new CustomError(`${req.originalUrl} NOT FOUND`, 404));
});

app.use(globalErrorHandler);

module.exports = app;