server.js

import express from 'express';
import mongoose from 'mongoose';
import dotenv from 'dotenv';
import cors from 'cors';
import path from 'path';

import bookRoute from './route/book.route.js'
import userRoute from './route/user.route.js'

const app = express();
app.use(cors());

app.use(express.json())

dotenv.config();

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

//connect to mongoDB

try{
  mongoose.connect(URI,{
    // useNewUrlParser : true,
    // useUnifiedTopology : true,
  });
  console.log("connected to mongoDB");

}catch(err){
  console.log("Error: ",err);
}

//defining routes 
app.use("/book",bookRoute)
app.use("/user",userRoute)


// deplloyment
if(process.env.NODE_ENV ==="production"){
   const dirPath = path.resolve();
   app.use(express.static('frontend/dist'));
   app.get("*",(req,res) =>{
     res.sendFile(path.resolve(dirPath,"frontend","dist","index.html"));
   } )
}

app.listen(PORT,()=>{
  console.log(`Server is listening on the port ${PORT}`);

});