app.js

require('dotenv').config();
require('express-async-errors');

// extra security packages

const helmet = require('helmet')
const cors = require('cors')
const xss = require('xss-clean')
const rateLimiter = require('express-rate-limit')

// Swagger

const swaggerUI = require('swagger-ui-express')
const YAML = require('yamljs')
const swaggerDocument = YAML.load('./swagger.yaml')


const express = require('express');
const app = express();

// connect db

const connectDB = require('./db/connect')
const authenticateUser = require('./middleware/authentication')

// routers

const authRouter = require('./routes/auth')
const jobsRouter = require('./routes/jobs')

// error handler
const notFoundMiddleware = require('./middleware/not-found');
const errorHandlerMiddleware = require('./middleware/error-handler');

app.set('trust proxy',1)

app.use(rateLimiter({
  windowMs: 15*60*1000,
  max: 100,
}))

app.use(express.json());
app.use(helmet())
app.use(cors())
app.use(xss())

app.get('/',(req,res)=>{
  res.send('<h1>jobs API</h1> <a href="/api-docs">Documentation</a>')
})

app.use('/api-docs',swaggerUI.serve, swaggerUI.setup(swaggerDocument))

// routes
app.use('/api/v1/auth',authRouter)
app.use('/api/v1/jobs', authenticateUser ,jobsRouter)


app.use(notFoundMiddleware);
app.use(errorHandlerMiddleware);

const port = process.env.PORT || 3000;

const start = async () => {
  try {
    await connectDB(process.env.MONGO_URI)
    app.listen(port, () =>
      console.log(`Server is listening on port ${port}...`)
    );
  } catch (error) {
    console.log(error);
  }
};

start();