index.js

const express = require("express");
const app = express();
const mongoose = require("mongoose");
const dotenv = require("dotenv");
const userRoute = require("./models/User");
const authRoute = require("./routes/auth");
const productRoute = require("./routes/product");
const cartRoute = require("./routes/cart");
const orderRoute = require("./routes/order");
const cors = require("cors");

dotenv.config();

mongoose.connect('mongodb+srv://Ash1:Ash1@cluster0.pbef3.mongodb.net/myFirstDatabase?retryWrites=true&w=majority',
    {
      dbName: 'ecommerce',
      useNewUrlParser : true,
      useUnifiedTopology: true
    
    })
    .then(()=> {
    console.log('Mongodb connected……');
    });
app.use(cors());
app.use(express.json());
app.use("/api/auth", authRoute);
app.use("/api/users", userRoute);
app.use("/api/products", productRoute);
app.use("/api/carts", cartRoute);
app.use("/api/orders", orderRoute);


app.use("/", function(req,res){
  res.send("welcome to the server")
})

app.listen(process.env.PORT || 5000, () => {
  console.log("Backend server is running!");
});