app.js

const path = require('path');

require('colors')
const express = require('express')
const dotenv = require('dotenv');
const morgan = require('morgan');
// eslint-disable-next-line import/no-extraneous-dependencies
const xss = require('xss-clean')
// eslint-disable-next-line import/no-extraneous-dependencies
const mongoSanitize = require('express-mongo-sanitize');
// eslint-disable-next-line import/no-extraneous-dependencies
const cors = require('cors');
// eslint-disable-next-line import/no-extraneous-dependencies
const compression = require('compression')
// eslint-disable-next-line import/no-extraneous-dependencies
const rateLimit = require('express-rate-limit')
// eslint-disable-next-line import/no-extraneous-dependencies
const hpp = require('hpp');

const { webhookCheckout } = require('./services/order')

dotenv.config({ path: ".env" })
//- connect to DB
const dbConnection = require('./config/database')

dbConnection()

//- express app
const app = express();
if (process.env.NODE_ENV === 'development') app.use(morgan('dev'))
app.use(express.static(path.join(__dirname, 'uploads')))
// allowing other domains to serve routes
app.use(cors())
app.options('*', cors())

// compress all responses
app.use(compression())

// checkout webhook
app.post('/webhook-checkout', express.raw({ type: 'application/json' }), webhookCheckout)
// to apply data santization
app.use(express.json({ limit: "20kb" }))
app.use(mongoSanitize());
app.use(xss())
const limiter = rateLimit({
    windowMs: 15 * 60 * 1000, // 15 minutes
    max: 100, // Limit each IP to 100 requests per `window` (here, per 15 minutes)
    message:
        'Too many accounts created from this IP, please try again after an hour',
    standardHeaders: true, // Return rate limit info in the `RateLimit-*` headers
    legacyHeaders: false, // Disable the `X-RateLimit-*` headers
})
// Apply the rate limiting middleware to all requests
app.use('/api', limiter)
app.use(hpp({ whitelist: ['price', 'sold', 'quantity', 'ratings'] }));



// initaite routes
const initRoutes = require('./routes/index')

initRoutes(app)


//- Middlewares
const errorMiddleware = require('./middleware/errorMiddleware')

errorMiddleware(app)


// initalize server
const { PORT } = process.env

const server = app.listen(PORT, () => {
    console.log(`Server running ✅✅`.grey, `http://localhost:${PORT}`.underline.blue)
})


// handel rejection outside express
process.on('unhandledRejection', (error) => {
    server.close(() => {
        console.error(`unhandledRejection error: ${error.name} | ${error.message}`)
        process.exit(1)
    })
})