server.js

// Importing dependencies
const path = require('path');
const express = require('express');
const dotenv = require('dotenv');
const colors = require('colors');
const cookieParser = require('cookie-parser');
const mongoSanitize = require('express-mongo-sanitize');
const helmet = require('helmet');
const xss = require('xss-clean');
const rateLimit = require('express-rate-limit');
const cors = require('cors');

const connectDB = require('./config/db');
const errorHandler = require('./middleware/error');

// Route files
const petRoutes = require('./routes/petRoutes');
const authRoutes = require('./routes/authRoutes');
const ownerRoutes = require('./routes/ownerRoutes');

dotenv.config({
  path: './config/config.env',
});

// Connect to the database
connectDB();

// Initializing the app
const app = express();

// Body parser
app.use(express.json());

// Cookie parser
app.use(cookieParser());

// Sanitize data
app.use(mongoSanitize());

// Set Security headers
app.use(helmet());

// Prevent XSS attacks
app.use(xss());

// Enable CORS
app.use(cors());

// Rate limiting
const limiter = rateLimit({
  windowMs: 10 * 60 * 1000, // 10 mins
  max: 100,
});

app.use(limiter);

// Mount routers
app.use('/api/v1/owners', ownerRoutes);
app.use('/api/v1/pets', petRoutes);
app.use('/api/v1/auth', authRoutes);

// Mount errorHandler
app.use(errorHandler);

const PORT = process.env.PORT || 5000;

app.listen(PORT, () => {
  console.log(
    `Server started on port ${PORT} running in ${process.env.NODE_ENV}`.yellow
      .bold
  );
});