app.js

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

// extra security packages
const helmet = require('helmet')
const cors = require('cors')
const xss = require('xss-clean')
const rateLimiter = require('express-rate-limit')

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


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

// routers
const authRouter = require('./routes/auth');
const jobRouter = require('./routes/jobs');

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

// extra packages
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.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, jobRouter);


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();